Golang Senior Jobs in Berlin

Job Description

We are looking for Senior Software Engineer to join our office in Berlin. We’re a team of 5,000 ambitious, curious people building marketplace platforms that make it super easy for anyone to buy and sell almost anything, boosting local economies.

What you will be doing: • Working in a small, cross-functional team of about 5-7 people (product, data engineering, front-end, back-end, DevOps) • Have impact on the direction of the product, not just the technology side (a sense of ownership is not only allowed, but expected) • You’ll be writing maintainable, testable and performant code in a Continuous Integration Environment • Research, suggest and implement new solutions to our problem domain • Thinking about and acting on data management solutions • How to improve the architecture and split the different domains into microservices

Who we’re looking for: • Has senior-level experience with any state of the art back-end technology. Current tech stack includes Go, Python, Node and JVM — if you’re the candidate for us, you will pick up these technologies quickly, or convince us we should be using something else. • Worked in Agile environment (Kanban, Scrum or XP) • Knows PHP on at least average level • Was exposed to TDD or BDD • Takes ownership and can work independently • Who worked in high-traffic, high-volume, cloud applications • Sees the differences between SQL and noSQL databases

What we’ll give you: • Contributing to the global OLX Group • International career and travel opportunities • Work with an international team of top engineers learning from one another • A budget for conference and education • Competitive salary and great benefits • Home Office possibilities • Company Mobile phone • Any tool you might need MacBook Pro, Notebook, PC (selection of Dells and Thinkpad machine) • Free coffee, snacks, and drinks • Great office location around the corner from Berlin Hauptbahnhof What you need to know about us: • OLX is the world’s leading classifieds platform in high-growth markets. It’s available in more than 35 countries and in over 50 languages. The platform makes it so easy to connect people to buy, sell or exchange used goods and services. • OLX is part of the OLX Group, a global product and tech company with 17 brands, +40 countries, +5000 people and one mindset. • Our mission is to make it super easy for people to buy and sell almost anything, boosting local economy • We are proud to be different, and we work differently too. We combine the spirit and agility of a start-up with the maturity that comes from being part of a 100 year-old company. • We are curious, ambitious and allergic to corporate interference. We improvise, experiment and push each other further, embracing uncertainty and driving change.

If you’d like to learn more about the OLX Group take a look at the other parts of our website or reach out to Sebastian. And remember, we are an equal opportunities employer.

Job Description

**THE COMPANY ** Solsten is advancing the human experience by empowering companies to build deeply resonating and healthier human-centered digital experiences and products.

At the intersection of play, psychology, and AI, our suite of products (Traits, Navigator, and Wavelength) give brands the ability to understand and meet their audiences’ experiential expectations at every step of their journey—ushering in a new era of technology that is better for people, and brilliant for businesses.

**THE ROLE ** Our engineering team is responsible for creating the platform that empowers this next generation of digital resonance. As a part of this team, you will work within a world-class team of engineers as well as with data scientists and UX designers to build the Solsten platform and products. As a Senior Backend Engineer, you will bring your own technical expertise, help design new services as well as improve current ones, and carry projects from initial requirements, implementation, up to production.

**WHAT YOU WILL DO ** * Design software architecture based on business requirements, strategy, and priorities * Design and implementation of Microservices in Go * Write reusable, testable, and efficient code * Write highly scalable, high volume services * Create optimized database schemas * Advise and implement best practices in multiple technical domains * Proactively seek and realize new value-add opportunities for customers * WHAT WE’RE LOOKING FOR * BS/MS degree in Computer Science, Engineering or a related subject * 7+ years of practical backend development * Demonstrated experience with building Microservices in Go as well as high load production systems based on microservice architecture * Very knowledgeable about distributed systems and technologies (gRPC, Kafka, NoSQL, SQL, Redis, ...) * Hands-on experience with leading commercial Cloud platforms, preferably GCP * Sound understanding of Software Development Life Cycle * Experience working in Agile/Scrum environments * Pay attention to detail and strive for excellence in all aspects of your work * Manage complex situations with a structured and organized approach * Strong communicator that expresses ideas and information clearly and concisely * Detail-oriented, with excellent analytical, technical and problem-solving skills * A portfolio of activities / a side project that showcases your intellectual curiosity **WHAT MAKES YOU STAND OUT ** * Hands-on experience with Kubernetes * gRPC / Protobuf experience * DevOps and application deployment skills * Python is a plus * Experience with message brokers * Good ability to derive and design technical specifications from general product requirements * Familiarity with and interest in psychometric data

**YOUR SOLSTEN EXPERIENCE ** At the heart of Solsten is our people. We pride ourselves with the incredible team that makes up the company and are deeply humbled by each one of our employees. We have grown beyond measure and have amassed an incredible team of talented, passionate, and amazing individuals. It is our biggest priority to give all members of Solsten the space and motivation to WANT to journey on this career path with us and continue to be a part of our success. Here are some of the things our current employees appreciate:

• Competitive, location-based salary
• Flexible paid time off (unlimited with a minimum requirement of 25 days off)
• 3 weeks of remote work per year
• Annual Wellness & Experience bonus
• Work equipment: laptop and necessary peripherals
• A people-first culture with a major emphasis on experience
• A company that is invested in you, your ideas, and your growth
• An opportunity to join a quickly scaling startup
• WHERE YOU WILL WORK

Our team is spread out across the world, with hubs in Berlin, and Minneapolis. We believe that having our team close to one another fosters better communication and productivity. This role requires you to be based in Berlin, Germany where you will have an exciting working environment. 

**OUR COMMITMENT ** Solsten is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender identity or expression, sexual orientation, national or ethnic origin, genetics, disability, or age.

Job Description

As a part of Amadeus, travel audience unit is the world’s leading data-driven travel advertising platform. travel audience harnesses the power of home-grown tech, combined with cutting-edge machine learning practices to connect the leading performance-oriented travel brands with the biggest network of publishers, reaching Billions of travellers globally.

Our aim is to optimize advertising across the entire traveller journey, identify and create new audiences, and increase our partners reach, relevance and booking volumes.

We are searching for a (Senior) Backend Engineer to join our team. You will be combining your passion for technology and have a direct impact on the lives of millions of travellers, while also helping travel audience in becoming the global leader in data-driven advertising for the entire travel industry.
**
What you'll do:**

• You'll be part of the team responsible for design, development, maintenance and operation of the programmatic advertisement and ad delivery components of our system: a set of Go applications, some of them, soft real-time;
• You'll design & implement new features, write unit and integration tests, tune monitoring and alerting;
• You'll work closely with Data Scientists in experimentation and optimisation of the business logic, leveraging machine learning and mathematical models;
• You'll actively contribute to improving quality & managing technical debt;
• You'll have the opportunity to participate in managing the infrastructure, capacity planning & optimising costs;
• You'll participate in architecture and design discussions, actively influencing the evolution of the architecture to meet new business requirements;
• You'll always be on a quest to look for better tools and solutions that match the new requirements better.

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. We offer you:

• The opportunity to drive business growth and truly having an impact on the business;
• The opportunity of taking an impactful role in a fast-paced industry where you handle new problems every day;
• The opportunity to work on a system that already handles many thousands of requests per second (per instance) and processes terabytes of data per day - and you will have the opportunity to help to push it further;
• The chance to experience working on a soft real-time system - designed to reliably respond in tens of milliseconds.

Requirements

About you:

• You have gained significant experience with software development, writing idiomatic Go code, and are familiar with the tooling of the Go programming language;

• You worked with at least 5 of these technologies: Kubernetes, Helm, Terraform, Google Cloud Platform or other cloud computing environments,Prometheus, Grafana, protobuf, gRPC, Kafka, Aerospike or other key-value or document databases, PostgreSQL or other SQL databases, microservice architecture;

• Work experience in production environments with high-traffic and/or high uptimes (HA, 24/7), or strong proficiency with performance optimization it's a plus;

• It's a big advantage if you are experienced with programmatic advertisement (eg. Google RTB or OpenRTB) or real-time/soft real-time environments;

• You are a quick learner, you believe in continuous improvement and you are good at analytical problem solving;

• You can communicate well and are a first-class team player;

• You can speak, write and express yourself in English – our company’s working language – in a professional context.

We are awaiting your application and looking forward to starting our journey together!

Job Description

We are looking for a (Senior) Backend Engineer with experience in Golang (f/m/d) to join our Global Contact Center Tech team to address our customers', riders', and restaurants' support issues quickly and with as little friction as possible which is crutial to our ability to create an amazing experience for our users.

In order to achieve this goal, we are building our own Automation & Support Platform to manage in-app support, self-service flows, transactional communication, automation of business processes, and other technologies that make ticket resolution more seamless: from the moment a user enters the customer support in the App, to making sure we have sufficient customer service agents available to solve the problem in a fast matter, and anything in between.

Your mission:

• Design, develop, test, deploy, maintain and improve software.
• Coaching and mentoring team members.
• Take part in architectural decision making.
• Understanding development lifecycle and collaborate with cross-functional and international agile teams.

Your heroic skills:

• Bachelor’s degree in Computer Science or an equivalent education or practical experience.
• Extensive experience in general purpose programming language.
• Experience working with distributed and parallel systems and web applications.
• Practical experience with Design Patterns, Design Principles, Software Architecture and Algorithms and automated tests (unit, integration and functional).
• Very good communication skills in English, both written and spoken.

Extensive experience with:

• Golang
• Design Driven Development.
• Hexagonal Architecture.
• S.O.L.I.D principles.
• Event-driven architecture.
• Good knowledge of relational databases (You should be aware of normal forms, ACID, isolation levels, index anatomy).

Other requirements:

• Ability to work in a fast-paced software release environment.
• Flexible and open-minded personality.
• Comfortable working in a multi-cultural environment.

Our stack consists of:

• Microservice architecture.
• Redis, Elasticsearch, SQL and key-value storage, AMQP.
• Cloud-based infrastructure following 12 factors using Kubernetes/Docker.
• Go and Phython as main languages.

*Why Delivery Hero?*

• Develop your skills with your educational budget for conferences and external trainings.

• Exchange ideas and meet fellow developers at regular meetups, in our active guilds and during our Global Developer Exchange Program.

• Join company parties, hackathons, cultural and sports events.

• Work in diverse teams with colleagues from across the globe in English.

• Save responsibly with our corporate pension scheme.

• Daily fruits, cereals, beverages, tea and coffee in our lounges.

• Learn German with free classes, access our e-learning platform and participate in our inhouse trainings.

• Enjoy massages, get your haircut in the office, join our free yoga classes or take a timeout in our nap room.

*About us:*

Delivery Hero Tech is playing an exceptional role in the large growth of our company. Our Tech teams leverage a diverse stack to create cutting-edge solutions which cover the full customer experience - starting with a great online search experience and ending with a real-time delivery at your doorstep.

Read about the latest updates from our Tech & Product teams on our blog.

Delivery Hero is building the next generation global on-demand delivery platform. We have grown rapidly from inception in 2011 to become the world's largest food-ordering network and we’re now innovating and creating new verticals such as groceries, pharmacies, flowers and other convenience articles in multiple markets.

Our awesome international team already operates in 40+ countries worldwide and we are looking for the most talented people to join us on our mission to ‘always deliver an amazing experience.’ If you’re an enthusiastic problem solver and hungry for a new adventure, an exciting job and multicultural workplace is waiting for you in the heart of Berlin!

At Delivery Hero, we believe diversity and representation is key to creating not only an exciting product, but also an amazing customer and employee experience. Fostering this starts with hiring -- therefore we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, or any other aspect that makes you, you.

**Have we caught your attention?​ If you are looking for an environment where our company DNA is defined by our values, please send us your CV.**

Find out more information on how to prepare for you technical interview here.

We’re looking forward to your application!

Job Description

As our Senior Go Developer, you will make key contributions to the creation of a product on track to improve medical care for millions of people. You will be a valuable member of our Backend chapter with the chance to maintain an ever-expanding cloud-based product, the freedom to work on a wide range of topics, and the opportunity to make architectural (design) decisions.

WHO WE ARE

AMBOSS is a medical education company that has fundamentally changed the way physicians acquire their know-how. Our comprehensive study and reference tool combines cutting-edge technology with the latest medical research.

Founded in 2012 by doctors for doctors, the company’s international team consists of more than 40 different nationalities, with the most diverse backgrounds. AMBOSS is headquartered in Berlin with offices in Cologne and New York, currently serving over 500,000 users in more than 180 countries.

WHAT YOU WILL DO

• Working in an agile team on one of our main products – the online pharma information base for physicians.
• Assist in the migration to microservices with Go
• Further expansion and maintenance of our API based on GraphQL
• Refining implementation in rounds of code review, quality assurance, and PO acceptance.
• Covering your code with unit/functional/end-to-end tests.
• Architecture and API design decisions working in a cross-functional team.
• Monitor during operation (using tools such as Kibana, Cloudwatch, DataDog) for analysis and optimization.
• Collaboration with our support team in escalation cases (troubleshooting or usability optimization).

WHAT YOU WILL BRING

• An expert understanding of Go with proficiency in Python or PHP to develop applications and microservices.
• Deep understanding of building maintainable & scalable code.
• Ability to hold your ground in architectural discussions that are focused on implementing best practices.
• Great knowledge in relational and non-relational databases or document stores
• Routine in working with development tools like Git, GitHub, Jenkins, Jira, Docker, Kubernetes, etc.
• Mastery over the English language, you can freely discuss your ideas in an agile work environment.
• Cross-functional project management experience where you guided engineers, developers, designers & scientists, is a real plus!

THE AMBOSS PRESCRIPTION

• Set your own biological clock: Make use of our flextime and home office options.
• Keep the hemoglobin flowing: Enjoy our fitness and wellness program with a sponsored gym membership.
• Need more serotonin? Get involved in our monthly team events, game nights, and weekly language lunches.
• Keep those synapses firing: Profit from ongoing learning opportunities with our educational seminars, “crosstalks”, and development programs.
• No risk of high cholesterol here! Dig into freshly cooked lunches, healthy snacks, and wash it all down with the help of an amazing Italian espresso machine.
• Your doctor recommends time off your feet? Our mobility perks have you covered with a yearly public transportation card.
• Want a little extra exercise? Then choose the sponsored bike instead of the public transportation card.
• Reduce that childcare-associated cortisol build-up: Bring your child along to our AMBOSS Daycare when your Kita is closed, or use it to bridge the gap until you find a Kita spot.

We believe that it is not possible to put every type of diversity into words. We always have and always will live with the intention that every person, from every background and demographic, is welcome. Whoever you are, and wherever you come from, we believe you have something to add to our mission.

Does this sound like the place you have been looking for? Get in touch! We are looking forward to receiving your application.

Job Description

About Herdius:

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.

Job Description

Based on our working product we would like to improve our cross-technology blockchain application for access rights and need a team member who drives the development right from the start. Therefore, we need support in the development of a blockchain based access management solution with following focus areas: • Set up and maintenance of a decentralized network • Programming of the function to create and share cryptographical access permissions • Communication to terminal devices via Bluetooth, NFC and WIFI • Integration of the web solution and of the mobile application • Coordination between different divisions as Backend Development, IT-Operations and Mobile App Development.

We are searching for a (Senior) Full Stack Developer who works on the overall solution including the development of the relevant SDKs for mobile applications. Therefore, interests and competencies in following areas are relevant: • Programming languages: Java, C, C++, JavaScript, C#, Golang, Swift • Understanding the architecture, design, and implementation of Blockchain systems, distributed ledgers and smart contracts • Cross-cutting operating systems: Mac, Windows, Linux • Cryptographical algorithms and security considerations • Experience with Bluetooth/BLE, p2p networks and/or file exchange is a big plus • Knowledge about continuous integration and unit tests • Familiar with Git as the version control system and first experiences with agile software development, e.g. Scrum • Additional competencies in Application Deployment, Scaling, Management and Continuous Delivery (Docker, Ansible, Kubernetes, etc...)

On top of that, we are searching for a team member, who is eager to learn, switch contexts and share his/her knowledge within the team. At the same time, he/she is able to take responsibility in a growing team and have some experience as mentor and decision maker.

Job Description

The role:

As (Senior) Software Engineer (m/f/d) you will be involved in every layer of the technology, including the robot control system, the video streaming system, our machine learning side as well as the cloud infrastructure. In addition, you will be essential in defining the foundations of our product and culture.

The profile:

• You have relevant work experience in fast moving environments like a start-up, technology companies, or from technical university programs
• You have got a strong knowledge in C or C++ programming, proficient Linux experience and you are always curious to learn new technologies
• Fluent verbal and written English language skills
• Affinity for autonomous mobility technology
• You think big and like to build something, you are solution oriented and like to get stuff done
• You enjoy working in a fast-moving environment
• At the same time you are a true team player and we will enjoy working with you

Nice to have’s:

• Video and audio encoding (e.g. H.264/AVC, H.265/HEVC) and multimedia systems with deep understanding of codecs for optimisations
• Background in mobile networks (e.g. 4G / LTE) over the top services, real time services
• General networking (e.g. VPNs, TCP/IP), packet routing, network performance tuning
• Robot Operating System (ROS)
• Experience with embedded systems and the Nvidia SDK
• HW/SW integration into vehicles (e.g. functional safety, CAN, etc.)
• Cloud infrastructure (AWS, Golang, Docker) experience
• Experience with React Native Development
• You are proficient in working with Unity
• Interest/experience in applied machine learning
• Driving license class B equivalent or higher

We obviously don't expect anyone to check all these nice to have's!

Our offering:

• Change how people move in big urban areas while making car ownership obsolete
• A competitive compensation package & unlimited vacation
• Involvement in one of the most exciting tech projects in Europe
• An open-minded and fun work environment
• Be surrounded by a highly committed and very experienced team
• Relocation services to Berlin - It doesn’t matter where you currently live!

Note: Ree provides an equal opportunity to all candidates. All candidates will be considered for employment regardless of age, ancestry, color, gender identity or expression, marital status, medical condition, national origin, political affiliation, race, religion, sex, sexual orientation.

Come join us! :)

Job Description

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!

Job Description

At Synergist, we design software to make negotiating legal contracts fun and rewarding. We're making human negotiations machine-readable, creating big data sets of negotiation & behavioural data and extending our reach by integrating with third-party platforms. If we do our job right, our users feel empowered to negotiate contracts and get sh*t done really quickly.

Our team has spent 2 years (and a lot of love) crafting a beautifully simple solution to a complex and boring problem: contracts. 
Therefore we are looking for a backend focused PHP Software Engineer (m/f) who loves to solve complex problems, shares knowledge, takes responsibility and makes pragmatic decisions. As a Senior Software Engineer, you will collaborate with our small and talented team of engineers (PHP, React.js, Go and Infrastructure Engineers) to develop our contract negotiations platform with an eye towards efficiency and scalability. You will focus on the server-side implementation of our business logic, which manages many parts of our system.

What we are looking for:

• 7+ years of PHP backend development using Symfony/Laravel or similar framework
• 2+ years of experience with Go or a solid Computer Science background and a desire to learn new stacks
• Strong MySQL and database design skills
• An understanding of how design decisions affect scalability, storage requirements, and the like
• Basic Linux skills
• Fluent in spoken and written English

Having one or more of the following is not required but nice to have:

• Experience working on a enterprise software at scale
• Experience with Go, Docker, AWS, Redis, Terraform

What we offer:

• Work with some cutting-edge technologies that are new in the market
• A small international team with different skill sets and backgrounds.
• Engineering culture: more then a half of the company works in technical positions. Engineers contribute to making product decisions
• Bright and spacious office easily accessible by public transportation
• Flexible working hours and independent work structure
• Choose your equipment

In summary:  
 If you'd like to be part of building an enterprise software company from scratch and responsible for shaping the world's first automated negotiation bot with a bunch of cool people, then get in touch.