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Herdius is a Berlin based Blockchain Company. We are working on building homomorphic distributed private key generation which then is turned into value bearing products in different sectors. Currently we are very close to open beta-testing for the Herdius-Crypto-Wallet. What we focus on on the blockchain field specifically is interoperability and trading. When connecting different chains on the key level, users can eliminate communication channels, bridges and complex systems. In other words, users can do cross-exchange and chain token swaps very conveniently and profitably for the user due to the cross-exchange arbitrage opportunities. The broader vision is one day to replace API auth keys with public-private key cryptography in order to provide layered access to user data.
All this makes for a crypto eco system and hedge fund that pays interest on all cryptocurrencies (that right now are unfortunately somewhat unusable and just laying around on wallets).
About the role:
Herdius is seeking for a Gopher Guru - an experienced Senior Golang Backend-Developer - to join our team of smart and visionary individuals. Experience in Blockchain is not necessary but a big plus.
We do not look at this role as another standard job but rather as great opportunity to build something really meaningful und amazing. Become a member of our great collective of top nodge engineers and people - altogether working to create cutting edge tech for the masses.
Besides the Herdius HQ in Berlin our Dev-Team is working mostly remote on different time-zones - so this vacancy surely also is location agnostic.
We would expect you to contribute at least 20hrs per week for part-time but joining full time is possible, too.
Cool things you will work on:
Implementation and design of Herdius’ consensus algorithm and p2p order routing protocol.
Lots of work around trading and high volume data handling and transfer.
Design and implementation of a low-latency, high-availability, and performant algorithmic hedge fund and exchange order book.
Integration of the Herdius distributed private key generation protocol.
Constant performance testing and improvement of our architecture.
Working on new financial products that have not been seen in the crypto world, setting up the base-layer infrastructure of a trading system and hedge fund
Skills & requirements
Strong proficiency & experience working with Golang
3+ years of experience as a backend engineer, language agnostic but Go, React, NodeJS, Vue.JS, Scala, Angular, Rust preferred
Experience and passion working with distributed systems and networking
Strong interest in blockchains and related technologies
Passion for delivering quality, secure code with loads of testing
User authentication and authorization between multiple systems, servers, and environments
Interest in privacy and cryptography, trading and financial service
Understanding fundamental design principles behind various consensus algorithms
Understanding differences between dPOS, DAGs, Plasma, BFT, aBFT, etc.
Implementing automated testing platforms and unit tests
Proficient understanding of code versioning tools, such as Git
Interview Process
Your education or professional experience at the end of the day does not matter to us. It all comes down to us being convinced by your skills and drive! We mainly look for people who are passionate about projects they work on and have the drive to see a project through. Our code is mostly done in Golang with some Solidity for connectivity with Ethereum.
How to apply:
Send anything that reflects on your knowledge and experience in the field. Besides a CV/LinkedIn-profile you can send links of your GitHub/Stack Overflow/Portfolio/ or something awesome you've built that you’re simply proud of.
Fraugster is a payment security company with the goal of eliminating fraud and increasing our customers’ profits. Over the last years we’ve invented an artificial intelligence technology that combines human-like accuracy with machine scalability. This ability lets us foresee fraudulent attacks before they actually happen and gives us a distinct competitive advantage over every other player in the payment security space.
We’re already working with some of the most well-known payment and e-commerce companies in the world. Notable clients include companies like Ingenico, SIX Payments and others. Fraugster is backed by top tier investors and is currently managing billions of Euros for our clients.
Development at Fraugster:
Our stack uses Go exclusively for back-end APIs. Functionality is spread across multiple services which communicate via gRPC. Relational data is stored in Postgres and other types of data are held in other non-relational data-stores such as etcd and Kafka. All services are containerized and deployed to kubernetes. Our frontend client is implemented in Angular 7 (Typescript).
Our development process is lightweight Scrum with 2 week iterations. Code is contributed to projects via merge/pull requests which are peer reviewed by colleagues. Code is continuously integrated, tested and checked with automated CI pipelines.
As a team we value shared ownership of our code, design simplicity, code cleanliness and continuous improvement of products and processes.
Job Description:
You would be joining our cross-functional team to help us develop our customer-facing web application.
As a full-stack developer you would be responsible for implementing new features across multiple levels of our stack, assisting with the maintenance of our existing codebase/infrastructure and contributing to our overall development workflow.
The ideal candidate would be enthusiastic in helping us improve our engineering culture and quality, bringing new ideas to the table and helping us achieve clean, maintainable code and architecture.
The following skills represent the perfect skill-set of a candidate but we understand very few developers fit this profile exactly. As such, we would welcome candidates that can bring deeper knowledge of a subset of our requirements to our team, even if they have limited experience in other areas.
Desirable Skills:
Comfortable designing and developing GRPC/HTTP APIs with Go
Experience in at least one modern front-end framework, preferably Angular (2+) with Typescript
Knowledge of standard web development technologies including HTTP, CSS/SCSS, ECMAScript, HTML, bundling and testing tools
Experience containerizing and orchestrating infrastructure with tools such as Docker and Kubernetes
Interest in working with relational databases such as Postgres or MySQL
Previous exposure to non-relational data infrastructure including queues (Kafka), indexes (Elasticsearch) and key/value stores (etcd) would be desirable but not required
Business fluent in spoken and written English
What we offer:
Hands-on experience in building a product that’s revolutionizing the payment security industry
Technical challenges to solve with a real world application
An environment open to adopting new technology and ideas
Your own projects and opportunity to shape our Front End stack
Competitive salary
Office located in the heart of Berlin
We are looking forward to receiving your application!
Golang Blockchain Engineer Herdius Berlin, Germany $50,000 to $80,000 a year
October 2018
2 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
Job Description
We are looking for awesome backend developers to join our Berlin team at Herdius. We are a blockchain startup working on a decentralized financial platform tailored specifically for cryptocurrencies. Our goal is to create a new, highly scalable blockchain that can act as a transaction and identity layer on top of all blockchains. The vision for Herdius is to create the central cryptocurrency financial hub of the space. Since we are developing our own chain as well as are working on brand new technology there will be a lot of room for you to play around with new consensus mechanisms, blockchains, distributed systems design, governance mechanism design, order routing, etc.
Responsibilities:
Implementation and design of Herdius’ consensus algorithm and p2p routing protocol
Writing reusable, testable, and efficient code
Design and implementation of low-latency, high-availability, and performant applications
Integration of data storage solutions as well as distributed data storage solutions
Creation of an efficient crypto exchange orderbook capable of handling thousands of transactions per second
Creation of Governance / voting systems
Working on our distributed virtual wallet network that implements distributed key generation with homomorphic encryption
Requirements:
4+ years of experience as a backend developer, preferably in C/C+, Golang or Scala
Strong proficiency with Golang, preferably including p2p libraries and leveldb (or similar)
Understanding the nature of asynchronous programming and its quirks and workarounds
Understanding accessibility and security compliance
User authentication and authorization between multiple systems, servers, and environments
Efficient integration of cryptographically encryption schemes
Understanding fundamental design principles behind various consensus algorithms
Understanding differences between dPOS, DAGs, Plasma, BFT, aBFT, etc.
Past experience with ANY blockchain / crypto related projects is a huge plus
Implementing automated testing platforms and unit tests
Proficient understanding of code versioning tools, such as Git
Experience with other languages such as Javascript or Python
Strong passion for Bitcoin and other cryptocurrencies
What to send:
Links to your GitHub/Stack Overflow/Portfolio/something awesome you've built that you’re proud of
A resume or LinkedIn profile
Cover letter
Senior Software Engineer, SDK Tendermint Toronto, Canada / San Francisco, United States / Berlin, Germany $100,000 to $150,000 a year
October 2018
3 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
We're looking for someone who has:
- At least 5 years of software engineering experience.
- Significant experience writing Golang.
- Built an open source framework for software development.
- Significant open source software contributions.
- Experience working in an agile development environment.
- The ability to take ownership and see initiatives through.
- Worked with and mentored junior engineers.
- Exceptional communication skills.
- Experience working with distributed teams.
What your primary responsibilities will be:
- Improve the SDK codebase by committing DRY, well tested code.
- Work with the SDK team to triage tickets and move the project forward.
- Review pull requests and provide valuable feedback to members of the team and open source contributors.
- Mentor junior engineers and support the growth and health of the team.
- Help with developer adoption by supporting projects using the SDK.
- Participate in developer discussion forums and work to improve the usability based on user feedback.
- Promote the SDK by publishing blog posts and guides.
What we offer:
- The opportunity to build the future of the internet.
- An exciting role building open source software.
- Flexible work schedule.
- 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.
Site Reliability Engineer KIWI.KI Berlin, Germany €50,000 to €50,000 a year
October 2018
3 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
Our goal is to replace the physical key and to revolutionize key management. Our smart access-as-a-service solution KIWI allows users to unlock doors completely hands-free with our identity token KIWI Ki or by using our KIWI App. Our customers from the real estate industry use the KIWI Portal to simplify key management. And service providers like Deutsche Post and waste management companies open the doors of apartment buildings with KIWI. More than 47.000 households in 15 cities are already connected to the KIWI Infrastructure.
Our development team is an interdisciplinary mix, covering the full range from hardware and firmware development through systems, web, and mobile. Our highest priority is safeguarding the privacy and security of our users. We believe that it’s possible to have a connected system without gathering huge amounts of information on the private lives of our customers. As a result, we have developed our whole system almost entirely in-house, using cutting-edge cryptography, an innovative wireless sensor network, and an open-source approach.
YOUR ROLE
The role of the SRE at KIWI is to allow for the business to make changes quickly and safely within the company. Your role includes:
- Working with the business to translate business requirements into technical implementations.
- Designing and building tooling and process patterns to be used by the rest of the Engineering team.
- Maintain production and test environments.
YOUR SKILLS
Excellent, in-depth knowledge of GNU/Linux and associated technologies.
Strong knowledge of TCP/IP and UDP.
Highly skilled in at least one scripting language.
Working experience with Kubernetes, preferably running on CoreOS, continuous integration pipelines (Gitlab-CI, Travis, Circle).
An understanding of Ceph network block storage.
Python or Golang background a plus.
Excellent communication skills, both written and verbal.
A proven track record of working with Linux systems.
Able to work autonomously. Identifying and prioritising tasks; experience enough to know when you seek input from others.
WE OFFER
A high degree of autonomy, challenging tasks, and the ability to impact the company every day
An inspiring work environment based on team spirit, fun and passion for our product
Employee stock ownership plan und training budgets
German classes for non-native speakers
Weekly team breakfast and lunch as well as unlimited coffee and other drinks
A friendly and international team in an office in Berlin Mitte
Join our talented team and be a part of the KIWI story! We are looking forward to receive your application. Please apply here: https://kiwi-jobs.personio.de/job/13157#apply. Your contact person is Charlotte.
ARES Tech is a fast-growing company that provides an all-in-one end2end solution and community for blockchain developers and users.
We’re a small team that runs the kind of infrastructure you always wanted to help build up!
We are looking for a Senior Developer who is capable of performance-oriented and well-structured programming. You will work as part of an international team on the development of Blockchain applications / Decentralized applications (DApp or ĐApp).
What we expect
✦ Relevant work experience building distributed systems with open-source tech stack
✦ Several years of experience in C/C++, Go or NodeJS
✦ Knowledge in go-ethereum / Parity API / RPC / web3.js or other similar tools
✦ Knowledge in server side application framework (Express, Hapi, …)
✦ Understanding of basic distributed consensus methodologies (Mining, PoS, ...)
✦ Experience with agile software development, ideally with Scrum
✦ Fluent in English, German is not a must
✦ Bonus points: Knowledge in Smart Contract, distributed storage systems (IPFS) and Golem
✦ Bonus points : Knowledge in one or more task runner (Grunt, Gulp, Webpack, …)
✦ Bonus points: You have a cryptocurrency wallet : )
What we offer
✦ Signing Bonus in ETH, so... please prepare your wallet : D
✦ Interesting possibilities for your personal development with challenging projects and a personal conference budget
✦ Development of great products and the opportunity to inspire our customers by providing the benefits of blockchain technology with extraordinary game experience
✦ A great, performance-oriented, friendly and international TEAM is looking forward to meeting you
✦ MacBook Pro or Windows or any kind of digital devices that make your work easier
✦ One of the nicest offices in Berlin Mitte, near by Rosenthaler Platz and Nordbahnhof! Including free Club Mate, Coca Cola, fruit, pool table, table tennis, a terrace, and many more
✦ Office party, party and parties! Team events, BBQs, kicker & table tennis
✦ Flexible work hours
✦ Full-time or Part-time even Freelancer? no matter, let's start immediately ! Again... with ETH as Signing Bonus!
Contact us
mail(at)arestech.io
please including salary expectations and earliest possible start date.
We believe that great, agile software engineering requires creativity in solving problems for our users, a scalable architecture, great coding as well as open minded communication.
At OneFootball we are delivering the product experience for football fans, the platform for our content partners and tools for our internal users. Our main systems consist of a micro service architecture with golang applications running on Kubernetes in AWS, serving iOS, Android and Web clients.
The Consumer Web Team is a cross-functional team of 8 passionate individuals is based in Berlin, Germany. We are looking for a Backend Engineer who understands how to organise multiple systems, is skilled in Golang and passionate about working products. Join us and be involved in the production process, from idea to user.
As Backend Engineer, you will focus on expanding the reach of OneFootball on the web.
Join the team and help us improve the user experience through direct impact on creating, shaping and delivering features of our main website.
Your role
Build the backend API powering onefootball.com
Work on the performance in terms of retention and acquisition, scale & roll out new features in close cooperation with other engineers & stakeholders
Have an impact on systems and features used by millions of users
Be in contact with technologies from different areas
Your profile
You have been developing backend services with Go in a professional setting for at least 4 years already
You care about software quality and are familiar with agile methodologies
You have worked with Docker and Kubernetes
You are familiar with SQL and Redis
You have experience in writing REST Services
You have a positive attitude and can communicate complex ideas in English with ease
If we have captured your interest and you want to help us build the ultimate media platform for football fans, apply now and join our engineering team!
OneFootball strives for a healthy and safe workplace and is committed to building diverse teams.
We are currently looking for a skilled Senior Golang Developer to join the backend team of our Shop Applications Unit.
The Shop Applications Unit constantly improves the App, Mobile Website and Desktop Website. These big-scale products are each visited by several million people every month. Our highly scalable API updates and delivers our product data for our shop frontends in real-time – in peak times with up to millions of requests per minute! In that case, it truly matters if an API call takes 200ms or 50ms to ensure the best shopping experience. The team constantly challenges itself to raise the bar of what is “state of the art” and to provide the fastest and most efficient solutions to upcoming projects.
Challenges the team will be working on in the next months:
Working on a new backend API with the goal to unify core business logic to significantly reduce complexity in our frontends
Hardening and optimization of the API for production use
Finding solutions for challenges we face as we grow
What you will do
Develop a gRPC API in Go that encapsulates core business logic in a simple to use API for our frontend developers
Improve scalability and technical performance of our API and its response times
Work on a high-scalable product in the AWS ecosystem
Draft architectural decisions together with our Tech Lead and explore new technologies
Have a direct impact on team processes by regular agile retrospectives
Exchange your knowledge with other developers and be part of our ABOUT YOU TECH community
Who you are
You have 5+ years of experience in building complex backend API’s
You are very proficient in Go development
You have good knowledge of Elasticsearch and indexing products
You have experience in working with relational databases (e.g. MySQL) and key-value stores (e.g. Redis)
You write well-structured, efficient and maintainable code and actively keep the quality of the codebase in check
You have excellent analytical and problem-solving skills and enjoy building scalable distributed systems
You are used to working in an English speaking & agile environment
Nice to have:
You have experience in the AWS Ecosystem (Cloud Formation, Terraform, ElastiCache, etc.), Bamboo
You have experience with gRPC or GraphQL
You are familiar with centralized logging, monitoring, and alerting solutions
You understand DevOps, Containerization and Cloud solutions
Benefits
Grow together with one of the fastest growing eCommerce companies in Europe
Flexible working times
40% discount on our online shop
Fresh fruits + drinks everywhere
Language courses (German & English)
Free sports courses & reduced price for gym membership
Subsidized public transportation ticket
Free choice of hardware and operating system (Mac, Windows, Linux) also for private usage
State-of-the-art tech stack running on AWS
Modern office in the city center of Hamburg
International working environment and English as company language
Company flats (subject to availability)
Agile work environment (MOVE) and cross-functional teams
Free access to Germany’s greatest developer conference code.talks
Company pension scheme
Free Laracasts and Egghead account
Help in relocation and VISA process
We are looking forward to receiving your application – preferably via our online application portal! Thus, we can ensure a faster process and for you it is very easy to upload your application documents.
Go Backend Engineer (m/f/d) Golane Munich, Germany €65,000 to €85,000 a year
December 2020
3 Applicants This Week
More Than 6 Months Old
Job Description
ABOUT US.
As a startup dedicated to public transport, our vision is to make buying tickets for passengers as easy as possible. Therefore, we are developing a ticketing system that automatically detects beginning and end of a ride. Based on the detection, it is possible to provide passengers with the cheapest tickets.
The problem we are trying to solve is challenging: developing a reliable ride detection algorithm based on data from smartphone sensors while creating a solution that attracts both passengers and public transport providers.
We value active collaboration and independent work. We believe that together we can build a great solution that will have a major impact on public transport.
RESPONSIBILITIES.
contribute your own ideas to an innovative ticketing solution and shape the future of mobility
design and implement Go microservices with great features (e.g. best price calculator, ticket generator, …)
work on the ride detection algorithm – the core of our ticketing solution
test and deploy microservices
use functions provided by smartphones (e.g. GPS, various sensors, …) to improve our ride detection algorithm
work with mathematical and geographical tools to calculate routes of rides
YOUR PROFILE.
Golang skills
experience with test deployment (CI / CD)
excellent skills in working with docker, Kafka and / or Kubernetes
interest to learn more programming languages as needed
passion about solving challenging problems
BONUS SKILLS.
experience with GraphQL-APIs
familiarity with neo4j databases
practical skills in working with Amazon Web Services
To make our hiring process easy going we decided to keep it fast. Our hiring process from application screening up to contract offer takes at max 2 weeks.
Perks & Benefits
flexible working hours (work whenever you are most productive)
freedom to contribute and implement your own ideas (take over responsiblity and lead your projects)
Full-Stack Engineer nanotek AG Düsseldorf, Germany €45,000 to €75,000 a year
June 2020
4 Applicants This Week
More Than 6 Months Old
Job Description
We are on a mission to build a portfolio of digital products & services that simplify the life of healthcare professionals. While we are backed by a major corporate player, we move at start-up speed and appreciate an entrepreneurial, data-driven mindset.
We are now looking for a Fullstack Developer to join our team in Düsseldorf (non-remote)!
Your opportunity:
Write new and further development of the complex frontend solutions using Vue.js and backend development using Go that your peers praise for its elegance and readability
Develop data-driven and value-oriented products, work closely with our clients and bring ideas to life
Regularly interact with end-users to understand how your systems can serve them better
Propose, design and test applications to ensure data quality and systems reliability
Your background:
You have fundamental knowledge in working in a cloud environment (e.g. AWS, Google Cloud)
Hands-on experience working with relational databases & time-series database is a plus
You have expertise in modern frontend technologies (Javascript / Vue.js) along with the backend development (in Golang, Python, Node.js etc.)
You have excellent English communication skills (both spoken and written), German is a plus
What can you expect from life at naontek:
Innovation: You will be working at the frontline of digital healthcare.
Team: You are working closely with your development team and other colleagues from different departments.
Personal Growth: We support your constant personal and professional development and provide the dedicated training you need.
Autonomy: We focus on our visions and goals and we give you the freedom to creatively reach those targets.
Compensation: We offer competitive salaries together with employer funded pension, flexible working hours, home office opportunity, additional holidays, lunch allowance, public transport ticket subsidy and reduced parking costs. We also offer free drinks and free fruit.
Location: Our office is located in the digital heart of Düsseldorf.
Have we sparked your interest? Would you like to shape the digital healthcare with us? Then apply now! We are pleased to meet you!