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WHO YOU ARE: - At least 5 years of programming experience. - Significant experience with Golang. - Extensive understanding of the Ethereum state machine, including the EVM, transaction structures, state mechanics, etc. - Experience with the go-ethereum or parity codebase. - Expertise in blockchain technologies. - Experience working in an agile environment. - The ability to take ownership and see initiatives through. - Worked with and mentored junior engineers. - Exceptional communication skills. - Experience working with distributed teams.
WHERE YOU ARE: - Berlin - San Francisco - Toronto
ROLES/RESPONSIBILITIES: - Develop, maintain, and extend Ethermint - the EVM implementation on Tendermint Core - Develop Plasma-style sidechains for Ethereum - Develop Cosmos-Ethereum peg zones - Contribute to go-ethereum to improve its modularity and usability as a library - Help formalize the specification of Ethermint and ensure the implementation adheres to the spec. - Mentor junior engineers and support the growth and health of the team. - Review pull requests and provide valuable feedback to members of the team and open source contributors.
WHAT WE OFFER: - The opportunity to build the future of the internet. - An exciting role building open source software. - Flexible work schedule. - Travel stipend for conferences and in person collaboration. - At least 4 weeks of paid vacation. - Very competitive salary, including equity.
ABOUT OUR APPLICATION PROCESS: Qualified candidates can expect to go through a 4 step interview process. The first interview will be a call to assess cultural fit and to make sure our goals are aligned.
If we think there is a good fit, you'll have a call with one of our project managers to learn more about your skills and attitudes toward teamwork. If it's clear that you'd be a good addition to the team, we’ll ask you to complete a technical task for which you will be compensated.
If your technical task displays a high level of quality and care we will set up a final interview with our CEO or CTO.
The process can take up to 3 weeks.
HOW TO APPLY: To apply, please fill out this form: https://goo.gl/forms/jpdRI1wD8pdfoqKl2
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Your Role -To architect, design, develop, deploy, evolve, and operate distributed systems in a DevOps way -To be an integral part of an empowered and self-organizing team -To actively collaborate with other engineers, product owners, domain experts and designers to deliver great outcomes -To pair with others and review work, sharing knowledge and increasing quality across the board -To scale our reach by integrating our platform with more banks, PSPs, insurances and other financial systems -To champion continuous improvement of technology and the ways we work
Your Profile -You have at least 5 years of professional experience as a Software Engineer -You can build and debug reliable, high availability, secure and performant distributed services in Golang -You care about quality and know when and how to ship code safely -You have a solid understanding of system design, data structures, and algorithms -You are experienced with deploying and operating services on Linux -You can reason and drive technical decisions -You love to experiment and use data to drive decision-making -You get inspired, think of new ideas and like to share them with others
Our Offer -A tightly knit team of experienced engineers with lots of interesting challenges to dive into -A modern technology stack: Golang, Kafka, PostgreSQL, Kubernetes, Docker, CoreOS, Terraform -Extensive individual responsibility and personal support to grow professionally -Become part of a talented multinational team of 50 working in Berlin -Semi-monthly OptioAcademy – our internal knowledge sharing project Internal meetups – technical knowledge sharing events -Prime office location – top floor of the city’s tallest building, the best view in Berlin! -Various fun events (weekly team lunch, Friday after work drinks and BBQ, OptioAcademy, Meetups, Hackathons) -EUR 2,000 annual training budget for conferences, books, trainings, etc. -Free educational library, breakfast, drinks and fruit to keep energy levels high -Your choice of hardware and software
About OptioPay
OptioPay is a payment processor with a difference. Our software increases the value of any payment received by consumers from companies, by combining bank transfers with higher value gift cards. By integrating payments to employees or customers with effective marketing, we aim to create a completely new, performance based, advertising channel. OptioPay was founded by Marcus Börner and Oliver Oster in 2014 and is located at the top floor of the Treptowers.
At OptioPay we work cross-functionally, agile and test our limits to outgrow ourselves. Our goal is to change the way how people receive and spend money. To do this, we need your talent, creativity and drive. Join our diverse, multi-cultural and inspiring team, a fun and friendly group with a multitude of talents. At OptioPay you will find an ambitious and empowering environment with a shared vision and passion. We are looking forward to meeting you!
What are you waiting for, apply today through https://www.optiopay.com/job-details/78658-backend-engineer/?_pc=7558#apply
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Beaconinside is a startup based in the center of Berlin. Our goal is to build the next generation of indoor location services, connecting the Online and the Offline. We develop our own iBeacon hardware and software solutions to help companies enrich their iOS and Android mobile experiences with location-based content. This way offline customers will become mobile users, and mobile users will become customers.
Beaconinside was founded by experienced mobile and retail experts. We are now looking for technical talent - a Golang or Mobile wizard - for immediate hire to support our passionate engineering team in Berlin.
Your Responsibilities • Heading the software development of our campaign management platform, based on best-in-class Google cloud platform technologies. You will directly report to the CTO.
• Lead cross-platform initiatives to align mobile, web and backend development
• Responsible for the overall software architecture and connecting the dots between our iBeacon hardware and firmware, the backend services and our mobile APIs and SDKs
• Work with engineers, product management and QA to develop and meet functional and nonfunctional requirements on schedule
• Take ownership about setting up a learning development organization, i.e. coordinate workshops, hackathons and conference visits.
• Manage junior software developers and coordinate code reviews and pair programming
• Support rollouts and be available for on-call duties to resolve production issues
• Write clean, well-structured and maintainable code
• Investigate new technologies and development methodologies
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Who we are The future of transportation is Green. Here at FlixMobility Tech, the R&D group, we develop software with the brightest minds from around the world to engineer new experiences for our millions of customers across our apps and websites. Every day we solve challenging problems, like how to scale rapidly around the world and how to make an experience that delights our customers. We have a culture of sharing ideas, contributing to open source projects and being an active member in our technical communities.
To support our team we are currently looking for DevOps/Cloud/Platform Engineers (m/f/x) to join our Platform team in Berlin as soon as possible.
Your tasks - Paint the world green Paint the world green! Build our cloud! Design, deploy, monitor and maintain our infrastructure that hosts flixbus.com and the services it depends on, which is comprised of multiple Kubernetes clusters on AWS (provisioned with Terraform) and a private data center (running Debian on bare metal). Don't repeat yourself! Automate everything through our configuration management using Puppet and Ansible. Speak freely! Develop ops-related solutions, preferably in languages like Python, Golang, Lua or Ruby. Go team! Educate and support other teams to enable them to fully utilize our stack. Share the wealth! Contribute to open source projects (e.g. Kubernetes, Openresty and many more) or open-source our own projects Decisions, decisions...Evaluate interesting new technologies and come up with strategies to implement them. Don't panic! Spot and troubleshoot problems with our monitoring (Prometheus/Grafana) and use your insights to improve our disaster recovery plan.
Your Profile - Ready to hop on board Experience with cloud architectures (AWS, IaC) Good Linux skills (2+ years) Good containerization (Docker) skills Solid networking and database skills Experience working with multiple development teams Excellent communication skills Be result driven and value oriented Fluent in English
Perks - More than just a job Drive change. With innovation and smart technology, we are changing the way people travel, and you too can have an impact on this ride. Everyone is equally important and works together on uncharted challenges alongside inspiring colleagues from all over the world. Trust-based working. We don't punch the clock – organize your own schedule. We trust in what you do! Fun at work and beyond. Discover the world with your free FlixBus rides and join our regular team events – there's always something to celebrate! Feel at home. We provide you with a comfortable working space, free drinks, casual dress code, diverse employee discounts and more.
So if you are passionate about the new stack and want to keep up with the promising emerging technologies, FlixBus is the place to be. Apply now!
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PubNative is a mobile publisher platform that serves native ads via a scalable and flexible API for mobile apps and web. Our publisher-first approach focuses on the specific needs of each publisher across all verticals. Our ad serving technology is used by developers and publishers around the world.
Our system consists of a myriad of high load Golang-based APIs, iOS SDKs, Ruby/Rails 5 dashboard, Scala and Spark data- and ML pipelines, Druid OLAP system, running on a Mesos and Kubernetes cluster.
We're always on call to keep our networks up and running, ensuring our users have the best and fastest experience possible. We follow “Infrastructure as Code” model and immutable deployment strategies.
We are looking for a Site Reliability Engineer (m/f) to help us build and operate infrastructure platforms, and provide technical consultancy to engineering teams on how to build reliable, scalable and efficient services.
Our Responsibilities: - You help us build a hybrid, poly-cloud-provider environment - You help to design, develop and operate monitoring, tracking platforms - You drive scalability and operability of supported systems/infrastructure - You participate in on-call rotation and be on-call for the services you build and support - You work with other teams to provide consultations in systems architecture support for new and existing production systems - You write code so that you can automate tasks, support SLA for Production Systems, you support other engineering teams on reliability, scalability and efficiency topics - You manage OS image/templates via Packer, provision infrastructure via Terraform - You support CI/CD and make new pipelines - You engage in and improve the whole lifecycle of services—from inception and design, through deployment, operation, and refinement - You support services before they go live through activities such as system design consulting - You maintain services once they are live by measuring and monitoring availability, latency, and overall system health
Our Requirements: - 3+ years of experience in a Site Reliability role/Full-stack developer - Experience with public cloud providers (AWS, Google Cloud, Digital Ocean, etc.) and Infrastructure as Code (Terraform) - Strong programming skills and familiarity with modern programming languages: Go, Ruby, Python, Shell etc. - Knowledge of managing docker containers and microservices via Kubernetes - Experience building and monitoring systems and metric collection pipelines - Track record of building automation and solving multi-datacenter/clouds infrastructure problems - Knowledge of algorithms, data structures, complexity analysis, software design and reverse engineering - Interest in designing, analyzing and troubleshooting large-scale distributed systems - Experience working with source control - Git - Experience with continuous integration platforms such as TeamCity, Jenkins, CircleCI etc. - Understanding of Agile, DevOps practices such as CI/CD, automated testing etc.
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collectAI provides receivables management, covering the end-to-end process from e-invoicing and dunning to debt collection. Focusing on digital communication channels, automation and machine learning gives our solution an edge over traditional approaches. We communicate with customers via their preferred channels, at their favored time and enable them to pay easily. Companies benefit due to higher customer retention rate, reduced costs and improved repayment rates.
collectAI was founded in 2016 and is part of Germany’s largest e-commerce retailer, the Otto Group. Our international team currently consists of 30 professionals mostly working in our Hamburg office.We are looking for a (Senior) Golang Software Engineer / Site Reliability Engineer to join our Berlin-based engineering team: You will be creating, improving and operating micro-services written in Go as well as contributing to tools and systems that enable other teams to deploy services quickly and operate them reliably.
Our architecture is currently based on micro-services written in JavaScript, Python and Go. We use NATS for event streaming and utilize AWS' RDS in our persistence layer. Services are deployed in Kubernetes and monitored with Prometheus. We build our frontends mostly with React.
Basic Qualifications
Strong problem-solving skills
Good understanding of computer science fundamentals
Passion for clean, simple and robust code
Solid knowledge of Go
Preferred Qualifications
Exposure to Docker, Kubernetes and Prometheus
Experience with JavaScript
Knowledge of micro-service principles and best practices
Benefits - Regularly visit our headquarter in Hamburg's beautiful Hafencity - Shape our Berlin-based team as one of its first members - Well-funded and part of Germany's largest online retailer, the Otto Group - Option to partially work remotely - Budget for conferences, books, trainings etc. - Free choice of hardware and software
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We’re Hackmind. Welcome.
We fund and support scientists & engineers to build decentralized AI startups from ideation to launch. Hackmind is an AI-focused incubator in Berlin, the capital of cryptocurrency. We invest in raw technical talents with ambitious visions and risky ideas to transform slow industry using AI and decentralized approaches.
This is Hackmind. Adventure awaits you…
We are looking for a software developer to help build trading systems and trading tools used in the management of hackmind portfolio.
Responsibilities: You will build architect the hackmind execution trading platform You will work very closely with our traders to develop a number of different algorithmic execution solutions to help limit market impact Management and execution of connecting to new exchange API’s Management of hackmind data capture and storage of historical data Analysis of liquidity across numerous different exchanges and liquidity pools Help build tools to visualize hackmind portfolio and trading activities
Requirements:
Mastery of C++, Golang, Rust or a similar low-level language Experience with python Experience developing in low-latency systems Experience with computer security Experience in cryptocurrencies is a plus Experience with distributed systems Interest in trading and markets Excellent communication skills Enjoy working with a lean team in a fast paced environment
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trecker.com is an AgTech startup that digitizes the oldest industry in the world – agriculture! Our software-as-a-service delivers professional enterprise resource planning. It assists farms in keeping track of their business, improves operations and identifies optimization potential by crunching data.
Increasing agricultural innovation & technology is talked about being the most promising way to soon feed 10 billion people. Today, agriculture is a $3,1 tn market with an investment growth in AgTech equaling that of FinTech.
Within the last 6 years we were able to establish a solid position in the German market. While we're going to scale our multi-service platform by adding new functionalities we take on the challenge of synchronizing data, orchestrating microservices and keep them maintainable using docker containers on AWS (soon also with Kubernetes)!
Join us in our mission to become the most recommended software in agriculture worldwide and help farmers save time, money and nerves.
Reasons to join trecker.com
Your playground
You fit perfectly if you
Our current tech stack: Rails 4x, Go, React, iOS Swift 3, Android, Postgres, ElasticSearch, REST api, Microservices, Realtime web, AWS, Grape, Webpack, Swagger, Scrum, Jira
At trecker.com we welcome engineers who find smart solutions for complex problems to help farmers say “Hello simplicity, bye bye paperwork!” :-)!
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We’re FinLeap, a Fintech company builder based in Berlin and active in more than ten countries. Along with our passionate co-founders, we launch several startups per year. Our environment is diverse, exciting, fast-paced and changing every day. We’re now looking for a Senior Backend Engineer (m/f) for one of our new ventures.
If you're looking for an innovative, dynamic, agile and international environment to work in become part of our eco-system with 13 different products.
Your Role & Responsibilities: - Responsible for the design and development of backend services - Work with cutting-edge technologies in an agile environment - Part of a collaborative international team of highly skilled technical experts, who inspire each other in their daily work - Evaluate different approaches and methodologies in development, finding the best ways to develop and ship new ideas - Work on the API development with external providers and manage complex integrations - Understand patterns of microservices architecture and have already applied them successfully - Take ownership of important components and continuously work to improve them
Our Perfect Match - 3+ years of experience in backend development - Knowledge of front end frameworks is a plus - Familiar with technologies like Node, Scala, Golang, Java and project management - Constantly improve your working environment by researching and applying new technologies - Experience in building RESTful APIs, data processing technologies and continuous deployment and delivery - Experience with both SQL and NoSQL database technologies - Familiar with test frameworks and you are used to test while coding - Familiar with different cloud providers and their products and always ensure security in your implementations - Embody the culture of excellent troubleshooting, communication and documentation - Good communication skills, with a high proficiency in English.
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collectAI provides receivables management, covering the end-to-end process from e-invoicing and dunning to debt collection. Focusing on digital communication channels, automation and machine learning gives our solution an edge over traditional approaches. We communicate with customers via their preferred channels, at their favored time and they are able to pay easily. Companies benefit due to higher customer retention rate, reduced costs and improved repayment rates.
collectAI was founded in 2016 and is part of Germany’s largest e-commerce retailer, the Otto Group. Our international team currently consists of 30 professionals mostly working in our Hamburg office.
About the job
We are looking for a (Senior) Software Engineer to join our Berlin based engineering team: You will be creating, improving and operating micro-services written in Go and JavaScript as well as contributing to tools and systems that enable other teams to deploy services quickly and operate them reliably.
Our architecture is currently based on micro-services written in JavaScript, Python and Go. We use NATS for event streaming and utilize AWS' RDS in our persistence layer. Services are deployed in Kubernetes and monitored with Prometheus. We build our frontends mostly with React.
Basic Qualifications
Preferred Qualifications
Benefits