Advanced Blockchain AG are looking for an experienced Back-End Developer to join our core development team. You’ll be taking on new and ongoing projects with industry leading clients looking to be the first to implement and benefit from blockchain technology.

What we offer:
An environment that embraces freedom and autonomy and values team
spirit and open communication. We encourage you to put forward your
thoughts and ideas.
An open plan office in the heart of Berlin.
The opportunity to contribute to cutting edge projects in a new and exciting
industry with the potential to positively reshape our world.
An international team of DLT pioneers from 12 different countries.
Flexible working hours.
Responsibilities:
Back-end development of our high-loaded web applications.
Working with our Blockchain API.
Rest API development.
Micro services development with Docker containerisation.
Working and maintaining different types of DB.
Collaboration and architecture planning with the team and CTO on a high-
performance back-end infrastructure.
Mentoring your team.
Main requirements:
5+ years in back-end development
Practical experience with MongoDB, MySQL, Redis, Postgres
Strong knowledge of Go and experience with C++, Python
Join our Core Services team as Senior DevOps Engineer!
What you will do:
Drive the company-wide adoption of the cloud platform products and work closely on its implementation with the delivery teams;
Provide guidance on performance optimisation, help with the analysis and engage as the subject matter expert;
Participate in the analysis of new requirements and develop solutions and services to support the development teams.
Help to shape and execute the technical roadmap and strategy for the next generation of application features and cloud infrastructure in Google Cloud.
Develop systems automation and provisioning frameworks for multiple applications and environments.
Mentor, support and coach regarding tools, concepts and best practices.
Why join us?
As part of our team, you will work in a highly motivated environment, with equal opportunities, flat hierarchies and short decision-making processes. You’ll have a lot of freedom to contribute your own ideas and implement them.
The opportunity to drive business growth and truly having an impact on the business;
A fast-paced industry where you handle new problems every day;
An environment where you are encouraged to research, explore and try new ways of doing things;
An open and dynamic culture that supports great work-life balance, while being part of Amadeus, the biggest travel tech company in the world.
Requirements
You are whom we are looking for if:
You are familiar with distributed systems, their complexity and benefits, and also the trade-offs involved;
You like to code and automate as much as possible in an environment with Terraform, Kubernetes, Helm Charts and Golang applications;
You understand different database technologies and messaging queue patterns and you know your way around BigQuery, Postgres, Redis, Aerospike, Kafka, Google pub/sub;
You like to monitor everything and Prometheus and Grafana are your best palls. If you have used them in Federated setups, please let us know;
You have worked in a production Kubernetes environment and you understand the concepts around overlay networks and Kubernetes Operators. Multi-region setup is our next big challenge!
You are in the frontline of technology innovation and you love to transfer your knowledge, experience and best practices to other Engineers;
You have experience or interest in working with Google data solutions like Dataflow, Airflow or Apache Beam.
We are awaiting your application and looking forward to starting our journey together!
Backend Engineer Onefootball Berlin, Germany €58,000 to €75,000 a year
June 2019
1 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
Onefootball is the ultimate media platform that enables football fans to get their daily dose of news and scores wherever they are, created by a team of professionals from more than 35 different countries. With +30 engineers based in the heart of Berlin, our mission is to tell the world’s football stories through a stable, scalable and reliable stack. On a monthly base, we reach +30 Million passionate football fans all over the world.
At Onefootball, you will be working in agile, cross functional and self-organized teams to deliver the ultimate product experience for football fans. You will help to create, promote and disseminate standards, gaining valuable experience simultaneously. Our main systems consists of micro service architecture with golang applications serving iOS, Android and Web clients. We have a strong foundation of shipping code through containers using cloud native technologies, such as Kubernetes. You can check our Stackshare page, too.
This role will either be within our Scores team, Users team or News team. We’ll be glad to tell you more about each team in the interview process.
Your role
Write code that your co-workers appreciate for its readability and elegance,
Work on a growing set of backend services that bring the latest scores, match highlights and statistics for hundreds of competitions to our users in no time by closely cooperating with our Product team,
Be responsible for delivering features and APIs on the backend service side in close cooperation with our Frontend and Apps teams.
Your profile
Experience in developing and maintaining fast, scalable and well-documented APIs,
Knowledge in developing backend services using Go,
Experience with MySQL, PostgreSQL and Redis and ability to optimize and use them effectively,
Solid understanding of what scalability, caching and load testing mean,
You’re convinced that the best backend is made of simple, easy-to-understand building blocks that form a reliable system,
Knowledge of the current trends in architecture and microservices,
Experience in Docker, Kubernetes and agile methodologies are pluses.
What we offer
At Onefootball we offer a fantastic workplace in Berlin, Prenzlauer Berg, with amazing rooftop terrace, kicker tables and FIFA corner. We provide great IT equipment, free beverages, fruits and cereals in an empowering, international and agile working environment.
As we proudly value our long-term co-workers, we offer one additional vacation day for each working year. You also have the opportunity to attend industry events & conferences, as part of our learning and development system. Add monthly parties & events to a culture of knowledge sharing – with weekly lightning talks, learning sessions and meetups – and you’ll get a great impression of how life working at Onefootball is.
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.
Back End Developer (m/f) Quoori Hamburg, Germany €55,000 to €70,000 a year
April 2019
3 Applicants This Week
More Than 6 Months Old
Job Description
We‘re looking for a Back-End Developer (Golang) capable of taking mobile application design to the next level. Because you’re joining us at the beginning of our journey, you’ll have the unique opportunity not only to shape your role at Quoori, but also part of the DNA that Quoori will be known for.
As our Back-End Developer, you’ll
Deliver innovative, engaging cloud products on mobile devices and mobile web apps
Lead the way on project architecture and database structure while utilizing best practices in performance, stability, scalability, and security
Work closely with front-end developers across the organization to continuously improve our ability to deliver awesome mobile experiences quickly
Contribute to concept development with multi-disciplinary teams of developers, creatives, and producers
Analyze and evolve components to scale and address new requirements
Who You Are
You're a brilliant problem solver, quick grasp, self-starter, and excellent communicator with a passion for your work. We’re looking for someone who’s excited about being part of our journey.
Position Requirements (must haves)
2+ years of experience as a back-end-developer
Must have experience with server-side-programming-languages (Golang, Java). Most interesting to us is hands-on Golang experience.
Experience in multi-cloud architecture and knowledge of edge computing
Experience in designing, deploying and running 24/7 services at a production level
Creative problem solving; independent (and team!) thinking; great communication skills
Basic knowledge of emergent technologies like Machine Learning and Big Data
You should be business functional in English as we are located in Hamburg with our corporate headquarters in San Francisco. There is a potential opportunity for travel to the US.
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-Âon 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
3 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
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
We are expanding our development team and are looking for a highly skilled individual with proven experience as a backend developer. You can work fully remote and we will be operating in an agile software development team to further develop our product API and backend services.
You will further build your skills by creating industrial applications and gain hands-on experience in the automotive, aerospace and medical field.
Tasks
Implement, test and deliver modern apis (e.G. GraphQL or gRPC) for our microservice architecture
Write microservices with gRPC communication
Connect and query graph databases like dGraph or Neo4j
Define software architectures with our young and dynamic team
Requirements
3+ years experience with go
5+ years experience with backend development
Docker, docker-compose, git
Experience with go unit testing and test-driven development
Experience with NoSQL Databases
Benefits
Remote work
Optionally you can also work in our modern office based in Hamburg, Germany
Tech focused team (we're all tekkies incl. founders)
Walk underneath and touch real airplanes (while system testing)
Work on interesting projects
Get immediate feedback directly from our end-users due to short dev-ops circles
Cloud Platform Engineer fortrabbit Berlin, Germany / Remote €59,000 to €72,000 a year
December 2021
1 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
This is not strictly a GoLang position, but we do have Go with our current tech stack and we want to extend on that.
We are looking for a skilled SysOps/DevOps Engineer and Linux admin. Help building and extending our hosting platform. Ensure the highest levels of availability, performance and security. Make a big impact by joining a small developer-centric team.
Your responsibilities
Strategic thinking: Shape future features
Development: Extend the platform
Maintenance: Keep the infra running (security updates & review)
DevOps Engineer ChartMogul Remote (Europe) / Berlin, Germany €40,000 to €60,000 a year
September 2021
1 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
ChartMogul Engineering is well on its journey to fully embrace a DevOps-driven culture!
Our DevOps team builds the infrastructure, processes, and tools necessary to release, monitor, and manage our applications with high velocity and efficiency in a modern cloud-native environment. We value automation, self-service, and empowerment of product engineering to manage our codebase from development to production.
By joining our team, you will play a significant role in supporting our growing architecture, working with edge cloud technologies, and implementing innovative solutions for our products. As with many young companies, your responsibilities may evolve. Here are some of the things we expect you to take on as a DevOps Engineer:
End-to-end ownership of everything related to the infrastructure that keeps ChartMogul alive and running, including running daily operations of our infrastructure on AWS
Collaborate with the product engineering teams and the various service support teams in engineering (QA, AppSec, Data Engineering) in service of maintaining, building, and improving our underlying systems so that they are highly available, scalable and performant
Actively contribute to improving our systems and evolve our infrastructure: flawless CI/CD pipelines, Kubernetes deployments, containers monitoring, automation with infrastructure as code, GitOps, reliability on AWS cloud
Join our constant efforts to meet and overcome standards for information security and compliance; ensuring our customer data is as safe as possible is our top priority
Proactively identify and validate areas of improvement as necessary by using the best tool available for a given case and constantly researching and evaluating industry trends that fit ChartMogul's needs
Our Tech Stack
We run a combination of Kubernetes clusters and a fleet of Linux machines for our Rails stack, along with multiple microservices backed up by PostgreSQL databases and a Redis datastore. Our legacy infrastructure is running on AWS EKS (Kubernetes and containers).
2 years of professional experience as a DevOps / SRE / Systems Engineer
Hands-on experience with high traffic production infrastructure
Strong knowledge of Linux and computer networking
Experience with AWS cloud and services
Experience with configuration management systems
Experience with managing and monitoring databases
Next to speaking English fluently, you can understand and translate business requirements into clearly articulated technology solutions
Nice to have
Understanding the cloud ecosystem in modern software development: Infrastructure as Code, Immutable infrastructure, git, CI/CD pipelines, containers, serverless, monitoring
Experience with Docker and Kubernetes
Experience with PostgreSQL databases and RDS
Hands-on production experience with CloudFormation or Terraform on AWS cloud
Behaviourally
Clear and precise communications, especially when working under the pressure of a production failure and/or incident affecting our users
You're passionate about the DevOps culture and keep up with news and technologies in the cloud, networking, Linux, and open-source area
You're eager to learn, contribute to design and architecture decisions, and inspire change
You value automation; you are eager to spend a bit more time automating things that require more than one manual trigger
What is it like to work at ChartMogul?
You’ll join the adventures of an early-stage company and experience what it means to have an incredibly impactful job
You’ll become part of a team of nice, awesome, and highly dedicated people who all have the same mission: Helping companies build better businesses
Flexible hours with healthy work-life balance
All employees, including contractors, receive sick days, paid holiday days, and paternity leave
You’ll receive a great salary pack (market or upmarket)!
Application Process
Application is reviewed
Introductory + technical call with our DevOps Engineer
Final interview with our Head of Engineering
Reference checks
Offer
This is a full-time remote position. Please note that we are only able to consider applicants who are eligible to work in the EU at this time.