We believe the world needs a place where people can exchange their loved goods. That’s why we built Mercari—to connect people who want to buy and sell things of emotional value through their mobile phones. Mercari has grown to become a leading community-powered marketplace in Japan that brings together millions of people every day.
▼About this position
Mercari's Backend Team is currently entering a major transition phase as part of the company's efforts to fulfill our mission of "creating value in a global marketplace where anyone can buy & sell.” The Mercari app has been growing at an incredible pace ever since its release and is now the largest C2C platform in Japan. The Mercari API codebase has also expanded in line with the service's growth and the variety of challenges faced. As we anticipate our service to grow at an even greater speed in the future, we are aiming to use microservices to help achieve Mercari JP's mission. Although the Mercari API was designed and implemented as a monolithic API, we are working on migrating the API to microservices. This will allow us to divide responsibilities and make technological investments for a stronger system and organization capable of handling even greater expansion. Of course, we will continue to run our services as we implement these changes, and we aim to make daily improvements to provide an even better experience for our customers. Our backend engineers are expected to uphold the values “Go Bold” and “All for One” as they work to transform our systems and organization and contribute to our service's growth. We are seeking backend engineers who can work proactively and independently during the team's current stage, taking ownership over various discussions, developing features, providing spec feedback, and making technical decisions.
▼Job Description
・Design, development, and operation of Mercari's API and web app using Go and PHP ・Design, development, and operation of tools to support the customer support team and planning-related work ・Design, development, and operation of various microservices making up the Mercari API ・Lead the team's development
REQUIREMENTS ▼Minimum Qualifications
・Strong understanding of the company mission and values ・Experience with design, development, and operation of web applications using two programming languages including Go, PHP, JavaScript ・Knowledge of and experience with software test including unit testing, functional testing, e2e testing ・Knowledge of and experience with optimization of queries and table design for the efficient usage of RDBMS ・Experience with team development using Git/Github or similar version management systems ・Ability to design, develop and operate large-scale services in heavy traffic scenarios ・Experience with project management and/or team leadership
▼Preferred ・Experience developing and operating using the microservice architecture ・Experience with on-call support for a service ・Knowledge of web app security ・Experience with development using external APIs such as payment, delivery, etc. ・Experience sharing and contributing to an OSS project ・Experience with scrum
▼Technical Environment ・Languages: Go, PHP, JavaScript, etc. ・Middleware: MySQL, Memcached, Nginx, Solr, Docker, Kubernetes, etc. ・Infrastructure: Dedicated servers, Google Cloud Platform ・Other tools/services: Slack, JIRA, GitHub, Circle CI, etc. ・Process: Scrum
・Health insurance
・Incentive program
・Employee stock ownership plan
・Full transportation coverage
・Custom PC
・Dual screen if needed
・Company smartphone
・Visa & Relocation support
・New Employee Benefits at Mercari「mercibox」 (https://careers.mercari.com/jp/benefits)
Apply ⎘ Copy Link ↗ Visit LinkSoftware Engineer (Go)
Technology
London NW9 5AB, UK
Utility Warehouse is an award winning multi-utility provider, our core offering is simple: all your utilities, one monthly bill. Our network of 45,000 partners add the human touch to our delivery, help us get the word out to our existing members and bring in new ones. We consistently win the Which? awards for our service and don’t believe “good enough” exists when it comes to customer satisfaction.
We’ve got the culture and focus of the earliest stage startups with the resources and strength of an extremely profitable and loved brand. Our eyes are on meteoric growth over the next few years. All the pieces to make it happen are here, we need you to help us put them together.
Our philosophy revolves around getting things done and we only hire people we can trust to do that. Bring your A game and you’ll always get ours. If you’re the type that can deliver you’ll be rewarded with small, fully autonomous teams that have real ownership of their products using a cutting edge stack in a best-idea-wins meritocracy. If that doesn’t quite cut it, we can throw in flexible and remote working (no, really) with top of market compensation.
As for the tech we use: the best tool is the right tool. Go and React are our bread and butter but nothing is stopping you from reaching for something else if it does it better. We deploy to Kubernetes across both AWS and GCP with some help from Terraform. We run a mature event sourced microservice architecture using Kafka, NATS and GRPC. As much as is possible we code in the open on GitHub. If it can be open- sourced, it shall. If we can submit a PR instead of building our own, we will. Getting your hands dirty from the top to the bottom of the stack isn’t a promise to be broken, it’s a requirement. If you’re only good at parts of it that’s okay, we’ll quickly make you good at all of it.
Squads currently hiring Software Engineers:
The Partner Experience squad is responsible for providing digital tools that help partners be more successful. The primary goal of the partner experience team is to increase the size of UW’s customer base by creating a well informed and highly motivated network. Using gamification techniques, the team delivers innovate tools covering and supporting the entire partner lifecycle from recruitment over on-boarding to enduring self-service business management to provoke continuous activity throughout the network.
The Energy squad is responsible for providing the systems that allow UW to integrate with the energy industry and function as a large Energy supplier; the frontend systems that allow our operational staff to manage the UW energy supply base and the systems to provide information and accurate energy billing to our customers. The team’s primary goals are to improve the operational efficiency of the operations and customer services teams by providing innovative and simple to use software solutions; ensure business continuity as a supplier by providing robust industry integration and regulatory compliant systems and build the platforms to allow UW to become an innovator for customer offerings in the Energy supply market.
The Insurance squad is responsible for the delivery of enhanced P&L through the successful growth of our new insurance business unit. It’s anticipated this 6th core service might also help improve customer retention. The team is responsible for the delivery of a platform for the insurance suite of services and products which will grow over time. The team owns the lifecycles of the insurance policies and manages any industry interactions, API integrations that are required to orchestrate this. This team is also responsible for enhancing customer data from customers answers during quotes process.
Careers page here: https://careers.utilitywarehouse.co.uk/
Github here: https://github.com/utilitywarehouse
Share options, energy discounts
⎘ Copy Link ↗ Visit LinkThis job posting is no longer available
Distributed Systems Engineer - to help us build a public, decentralised, blockchain-backed legal agreements network
London
£40,000 - £80,000 plus options (ESOP).
Relocation package available for the right candidate. This role could also be based in our Edinburgh office.
Candidates currently based outside of London or Edinburgh must indicate their preferred location and willingness to relocate in their cover letter.
We are looking for kind, talented software engineers to help us make smart iterations on our legal agreements network as we deploy successive test networks.
Monax were pioneers of permissioned blockchains and smart contracts and we are building our Agreements Network to allow new and more efficient forms of legal transacting.
Exploiting the benefits of various decentralised, distributed, and masterless technologies - chiefly Hyperledger Burrow, which Monax built from scratch and still maintains based on the Tendermint consensus engine.
You will have the chance to work on a system that has distributed consensus and validation in a low trust environment at its heart and offers very interesting challenges, these could be:
Working with our CTO on our Node Distribution Team you can expect to quickly own significant parts of our stack, and make decisions that will affect the company’s future viability in a fast-moving space (public permissioned consensus networks). You would also work closely with our Product Team who are responsible for building the foundational smart contracts, the business process modelling engine that drives the Agreements Network and also our particular front end (the network is open to extension by any of our co-founders however).
Your role will give you the chance to work across all teams in the business and it will also give you the opportunity to leave your mark in a growing industry, where you need to evaluate existing best practices and apply them to new technological paradigms and new programming languages. Navigating between the hype, the detractors and the zealots we believe there is real value in our approach and we intend to prove it.
You will join a business building a genuinely novel system, that in part intends to create an entirely new market by enabling legal products that challenge existing legal services.
This role would suit a talented software engineer, with solid technical skills in and a minimum of 3-4 years of software development experience. We are also open to engineers who can bring significantly more experience to the role. If you are a good match for Monax, we are willing to create a role that suits you.
Who do we need? Someone who has:
It is crucial that you are able to take part in forceful yet respectful technical discussions with colleagues and that you are able to change your mind about something if required, and also are able to change other’s minds.
Real things you might work on:
What can Monax offer you?
Extremely marketable blockchain and cryptocurrency skills.
The chance to make blockchain systems live up to their hype by making them highly operable, our network will be operated peer-to-peer by many parties and this needs to be as painless as possible.
Experience in blending distributed, decentralised, and centralised systems. To spend time working on something foundational at the level of a network architecture.
The chance to spend time thinking ‘around the software’; about law, economics, and game theory.
You will have a high level of autonomy. The business has just enough hierarchy, consensus and individual project responsibility (c.f. design-by-committee) favoured over diktats.
Flexible working - the successful candidate will be based in our London or Edinburgh work space primarily, but there is scope for flexible working and choosing your own hours and place of work when established.
Relocation assistance is available for the right candidate.
Who will you be working with?
Around fifteen people in our passionate cross functional team, including time with:
About Monax
Monax would like to build a better system for contracting for the good of humanity and other forms of life. To learn more please visit:
Monax Website
Agreements Network
Hyperledger Burrow
About the company
ConsenSys is a venture production studio and the leading technology firm in blockchain globally. We deliver products, solutions and platforms built using blockchain technology to transform how business is done in complex network of buyers, suppliers and consumers.
Our teams are busy at work building the future of identity, financial markets, commerce, the music industry, security, and infrastructure, and more. To accomplish this we've built out a flat organizational structure which we call the ConsenSys Mesh: a network of individuals & teams working autonomously and towards the same goal. If you are someone that thrives in a fast-paced environment where being self-directed, determined, and resilient are a requirement, we would love for you to join us.
Job position
Permanent - Remote work possible
Job description
About Balanc3 at ConsenSys:
The Balanc3 team is building and developing financial reporting products on the Ethereum blockchain. We're leading the accounting initiatives in the blockchain industry through our accounting software platform, full service partnerships, and accounting industry involvement. We have brought together leaders in both the accounting and blockchain industries to inform the design of our products.
About the Role:
We're seeking a Backend Engineer who is a self-starter and quick learner with a keen interest in Ethereum and blockchain technologies. Our ideal candidate is one who communicates effectively and consistently ships high quality, well-tested code.
Responsibilities:
Design and implement backend services - APIs, web services
Integrate with developed frontends
Collaborate with the team with well communicated and documented processes
Develop high-quality software design and architecture
Identify, prioritize and execute tasks in the software development lifecycle
Develop tools and applications by producing clean, efficient code
Automate tasks through appropriate tools and scripting
Review and debug code
Perform validation and verification testing
Collaborate with internal teams and vendors to fix and improve products
Document development phases and monitor systems
Ensure software is up-to-date with latest technologies
Here are some of the perks of being part of a unique organization like ConsenSys:
The forefront of a revolution. At ConsenSys we fundamentally believe that a next generation of technologies presents the opportunity to create a more just and equitable society.
A dynamic startup environment. ConsenSys is a thought leader in the blockchain space and we are absorbing a significant portion of the mindshare. This is both exciting and challenging, as we learn to scale our organization while adhering to the principles of decentralization.
Continuous learning. You’ll be constantly exposed to new languages, frameworks and ideas from your peers and as you work on different projects -- challenging you to stay at the top of your game.
Deep technical challenges. This entire ecosystem is about 10 years old. Ethereum itself is still a toddler. There is much work to be done before these platforms can scale to the order of millions or billions of users. ConsenSys is building the technology platforms that can get us to those next thresholds of scale.
Skills & requirements
At least three years of backend engineering experience, a large portion of which was in a team environment
Programming Languages: Node, GoLang, Rust
Fintech experience is a strong plus
Blockchain / Ethereum experience a strong plus
Database experience: MongoDB, Redis, Postgres
We are looking for an experienced Senior Backend Engineer to be a part of one of our cross-functional teams to help us shape the future of the time tracking industry and deliver real value to our customers with both new and improved features.
The salary for this position is €70,000 annually.
You can work from anywhere in the world.
As a Senior Backend Engineer, you will be taking ownership of one or more domains of our product and will work closely with other Backend and Frontend engineers using cutting-edge open source frameworks to highly-available RESTful services and back-end systems.
The main technologies you will be working with are Go, PostgreSQL and Google Cloud Infrastructure. Even though you can work whenever you want on your tasks, our team meetings can happen between 11:00 to 15:00 UTC. You need to be willing and available to attend these meetings when they happen
Your main responsibilities will be:
We are a global team of 130+ awesome people working from over 40 countries around the globe. We hire globally, you work locally—in the heart of London, a beach outside of São Paulo, or a quiet village near Florence, the choice is yours. Every few months we travel to meet up somewhere in the world and spend some quality time together. We place a huge amount of trust in our people, and we measure the outcomes rather than the work itself. Our values fuel our results.
Wonder if you'll fit in?
We would love to hear from you if you strive to solve technical problems of high scope and complexity and have long-standing experience programming in Go.
In particular, we are looking for:
Bonus points for:
At Horizon, we’re building a New Dimension where Internet economies are fun, accessible, and for the benefit of all participants.
We have two amazing products to make this real:
Sequence, which consists of i) the first user-friendly smart wallet for crypto, NFTs, Web3 + the metaverse, and ii) a developer platform to make building Web3 applications easy on Ethereum and other EVM chains.
And Skyweaver, a digital trading card game—powered by Sequence—where players can win, own, trade and sell their NFT game items.
Sequence is poised to drive Web3 adoption on a massive scale by making blockchain easy, fun and powerful for users and developers. And, Skyweaver is a groundbreaking video game with an unprecedented player-owned economy, novel gameplay, and an already fervent community.
While the challenge is hard, we find it incredibly fun. And, we have the ingredients to make it happen: a well-capitalized company with some of the best investors in the world (Reddit co-founder, Coinbase, Initialized, and more), an amazing team of leaders in the blockchain space, engineers who have built widely popular open source, a former top McKinsey strategy consultant, gaming industry veterans, and founders who have built and sold successful companies. You'll get to work with and learn from them all. Learn more at https://horizon.io/
About the Role
We're looking for someone with experience architecting, writing, testing and shipping production-quality code in Go, with a background in Ethereum development. You are rigourous and have a refined eye for simple arhitecture and clean code, and you are able to balance tradeoffs inherent in all design decisions.
You enjoy building scalable, fault-tolerant systems. You understand the meaning of value and delivering products that achieve business outcomes while laying the foundation of great tech that affects our entire org, and is impactful. This matters to you.
As a senior engineer, you have a deep understanding of designing robust, well-designed code with thoughtful architecture. You can drive and self-direct major areas of our stack. While not a strict requirement, you are comfortable working with and guiding more intermediate and junior engineers when needed.
Given our size, self-driven, and open-minded engineers will thrive best in this role. While small, you'll be working alongside some of the best engineers, and open-source contributors—and a company dedicated to your success. You will learn a lot.
Responsibilities:
-Architect, develop, and implement the infrastructure, and infrastructure stack of Skyweaver and Sequence -Design and implement services that are scalable, and fault-tolerant -Build services that interface with the Ethereum blockchain -Contribute to open source works in the Sequence stack -Extend and evolve our toolchain, to run our stack effectively -Design architectural foundations that are robust and sound, so that future engineers can build on your work with ease and speed
Requirements:
-5+ years shipping production-grade code in Go -Experience and knowledge of the Ethereum blockchain, its tooling and ecosystem -Knowledge of distributed systems design -Experience with data systems, both in their design and practical use -Experience with one of the major cloud providers, AWS, GCP, Azure, etc. -Growth mindset. You love to learn, and actively search out new material and technologies
Why Horizon?
· A chance to deliver massive impact at a small and quickly growing company · Competitive salary and equity package · Accelerate your career by joining at the early stages · Be part of defining Web3, the next generation of the Internet, and creating symbiotic economies where both users and creators share in the value generated by networks · Work with an outstanding team made of wonderful people who have built and sold successful companies, launched amazing products, and have rich experience in infrastructure, architecture, blockchain, games, finance, investing, strategy, consulting, design, marketing, community, and more. · Work life balance unlike the “crunch” culture you find at larger studios · New PC, and generous allowance for work-from-home setup · Health, vision and dental benefits for Canadian employees · We’re conscious about mental health and have modern vacation policies · We invest in everyone’s personal development and subsidize courses, books, and conferences, so you never stop learning · Work on hard, big, meaningful problems that can shift markets · Learn more about our values and the traits we embody at https://careers.horizon.io/
We are committed to diversity and encourage applicants from all backgrounds, genders and faiths. While we're building incredible products, we also want to add to our wonderful team and company. The best way to do that is to attract talented folks from all areas and to have their experiences inform their work.
This job posting is no longer available
We are looking for a Senior Go Backend Developer to help build out, maintain, and troubleshoot our rapidly expanding infrastructure. You will be part of a talented team of engineers that demonstrate superb technical competency, delivering mission-critical infrastructure and ensuring the highest levels of availability, performance, and security.
Responsibilities
Requirements
What’s in it for you?
Who are we?
Hubuc is a single API that enables any business to embed financial services into their products - think AWS for financial service.
With HUBUC, companies like Tesla and Salesforce can offer their millions of passionate customers financial products by plugging into our API.
Growing rapidly with more than 11 nationalities, we are obsessed with banking infrastructure, compliance, and Technology.
As founders, this is our 4th Fintech product, we know the pain of building Fintech first hand, and we are on a journey to democratize financial service globally.
We are backed by the prestigious Y Combinator and have funding from top-tier venture capital firms.
“Everyone is welcome here” — it’s a celebrated component of our culture. At Hubuc, we strive to create an inclusive environment that empowers our employees. We believe that our products and services benefit from our diverse backgrounds and experiences and are proud to be an equal opportunity employer. All qualified applications will receive consideration for employment without regard to race, color, national origin, religion, sexual orientation, gender, gender identity, age, physical [dis]ability, or length of time spent unemployed. We look forward to your application!
This job posting is no longer available
At Horizon, we’re building a New Dimension where Internet economies are fun, accessible, and for the benefit of all participants.
We have two amazing products to make this real:
Sequence, which consists of i) the first user-friendly smart wallet for crypto, NFTs, Web3 + the metaverse, and ii) a developer platform to make building Web3 applications easy on Ethereum and other EVM chains.
And Skyweaver, a digital trading card game—powered by Sequence—where players can win, own, trade and sell their NFT game items.
Sequence is poised to drive Web3 adoption on a massive scale by making blockchain easy, fun and powerful for users and developers. And, Skyweaver is a groundbreaking video game with an unprecedented player-owned economy, novel gameplay, and an already fervent community.
While the challenge is hard, we find it incredibly fun. And, we have the ingredients to make it happen: a well-capitalized company with some of the best investors in the world (Reddit co-founder, Coinbase, Initialized, and more), an amazing team of leaders in the blockchain space, engineers who have built widely popular open source, a former top McKinsey strategy consultant, gaming industry veterans, and founders who have built and sold successful companies. You'll get to work with and learn from them all. Learn more at https://horizon.io/
About the Role
We're looking for someone with experience architecting, writing, testing and shipping production-quality code in Go, with a background in Ethereum development. You are rigourous and have a refined eye for simple arhitecture and clean code, and you are able to balance tradeoffs inherent in all design decisions.
You enjoy building scalable, fault-tolerant systems. You understand the meaning of value and delivering products that achieve business outcomes while laying the foundation of great tech that affects our entire org, and is impactful. This matters to you.
As a senior engineer, you have a deep understanding of designing robust, well-designed code with thoughtful architecture. You can drive and self-direct major areas of our stack. While not a strict requirement, you are comfortable working with and guiding more intermediate and junior engineers when needed.
Given our size, self-driven, and open-minded engineers will thrive best in this role. While small, you'll be working alongside some of the best engineers, and open-source contributors—and a company dedicated to your success. You will learn a lot.
Responsibilities:
Requirements:
Why Horizon?
We are committed to diversity and encourage applicants from all backgrounds, genders and faiths. While we're building incredible products, we also want to add to our wonderful team and company. The best way to do that is to attract talented folks from all areas and to have their experiences inform their work.
Shape the future of Web3
Decentralized applications are a fast-growing market expected to reach $368B+ by 2027 and Source is pioneering the foundational technologies to help it get there and go beyond. Source is transforming industries and empowering developers to build amazing apps people use every day. We are building the future of data management and are the first database provider to receive backing from Dwight Merriman the founder of MongoDB, the predominant cloud database and a global roster of Web3 investors. Join our team and be at the forefront of innovation and creativity.
About the Role
Our database, DefraDB, empowers developers to build edge and decentralized projects to scale fast, survive anything, and thrive everywhere while ensuring their users’ data privacy. We are looking for backend software engineers who are excited about growing an open-source NoSQL database to join our database teams. Working closely with our CTO and co-founders, you will be part of a collaborative culture striving to make user-centric data interoperable across Web3.
You'll be working on
You're most likely to succeed in this role if you
Success in this role means
In the first month, you will join your engineering team and start to learn about our production systems, software development workflow, and the architecture of DefraDB and complementary technologies. We believe that it's essential for you to take this first month to become familiar with our technology, company, and our culture.
As our team grows you will have the opportunity to not only shape the direction of development for DefraDB but work alongside the founders to shape the future of the project and Source ecosystem as a whole. We want our users to have a phenomenal experience using our product and you play a crucial role in making DefraDB a joy to use. We also offer technical training and experienced mentorship to help you learn and grow into whatever you wish it to be.
What we offer
Acronis sets the standard for cyber protection and our mission is to empower people by providing them with cutting edge technology that will enable them to monitor, control, and protect the data that their business’ and lives depend on.
We have a need for a Software Developer to focus on building out new platform services. You will work on a team developing the next generation of core platform capabilities for Acronis, powering the transformation to a Cyber Protection Platform. Our team primarily develops new or generalizes existing applications relevant to core functionality to enable our wide range of applications and integrations.
For this position, we are looking for somebody who either has or is able to quickly demonstrate abilities with some or all of the following technologies:
Golang: all of our new service development is done in Golang.
PostgreSQL: we make heavy use of databases, and we use PostgreSQL primarily.- Kubernetes/Docker/CI Pipelines/MAKE/shell
Operating Systems and User-Machine Software: Acronis interacts heavily with client machines, experience with non-web-service software development, particularly user applications in Windows and Linux.
HTTP APIs: we need people who understand HTTP APIs from verbs to oauth to TLS, as well as familiarity with nginx, DNS and other key application-level technologies.
Python, C#, Java: this will get you bonus points or would be considered in place of Golang, in conjunction with existing basic fluency in Golang and strong skills in SQL and other key areas listed here.
Additional technologies which successful applicant should be able to quickly develop and display competency:
GraphQL: For schema aggregation and presentation usage.
WebSockets/gRPC: Event reactive frontend architectures.
In addition to technical skill, we have certain working characteristics that we value:
Teamwork: we prefer to work in small teams and leverage the effectiveness of multiple minds on a problem.
Independence: we prefer to give the engineer responsibility and empower their (responsible) decision-making.
Willingness to learn: we are constantly engaging new problems and technology, and success for us requires a willingness to seek out solutions to new challenges.
Collaboration: We work with other teams inside and alongside Acronis, and as a platform team, they are our critical customers. Their customer satisfaction is critical to our success.
Beyond the skills and requirements for the base role, we have needs and opportunities to grow in the areas below, assuming the candidate is interested:
Requirement refinement and technical design: Working with architect and product planning teams to clarify and refine requirements, participate or lead technical design and architecture of new products and features.
Technical leadership: ownership of a domain of expertise or service capability and the opportunity to drive its design and improvement.
People leadership: Taking on the unique challenge of leading people to project success for the delivery of software.
Every member of our “A-Team” has an instrumental role and impact on the success of Acronis’ business, so we are looking for a highly-motivated individual who thrives in a fast-paced and high-volume, work environment. The ideal candidate for this position will not only possess the skills and experience required but will also possess a positive attitude and ability to solve complex problems and work in a fast-paced and rapidly changing environment. And just like every position at Acronis, the ideal candidate will embody all of our company values: responsive, alert, detail-oriented, makes decisions, and never gives up.
RESPONSIBILITIES:
Working both independently and as part of small teams, develop new software and solve bugs with existing software.
REQUIREMENTS:
Experience developing complex software professionally for 3 or more years.
Skills: Golang, PostgreSQL, Kubernetes, Docker, HTTP
Education: Undergraduate degree preferred. Engineering degrees preferred, but any experienced software developer who can easily demonstrate competence will be considered.
Acronis is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, marital status, national origin, physical or mental disability, medical condition, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, gender identity or expression, or any other characteristic protected by applicable laws, regulations and ordinances.