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.
Senior Backend Engineer FinLeap Berlin, Germany $40,000 to $60,000 a year
October 2018
3 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
We’re 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.
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!
Site Reliability Engineer PubNative Berlin, Germany €40,000 to €65,000 a year
October 2018
2 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
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.
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
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
Senior Software Engineer trecker.com Berlin, Germany €40,000 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
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
Challenging tasks that enable you to grow & excel: multi-service platform with green field projects
Cutting-edge tech stack, great test coverage, high code quality & multiple deploys per day
Meaningful product: The chance to revolutionize an entire sector & change the lives of millions
No-Worries package: Permanent contract + above average compensation package e.g. company pension, moving aid, kindergarten fund
Transparency: Know what's going on! We share business information openly
Work-Life Balance: Flexible working hours, napping room, working from home/remote option + vacation up to 38 days!
Freedom & Impact: We know a lot but by far not enough. That's why we want smart people to join our team and share their ideas
Personal development: Large development opportunities e.g. Tech talks, conference budget + speaker fund, team meetups, inhouse workshops etc.
Great team: Join a passionate team & fun company events such as our one week retreat in Greece :-)
Your playground
As Software Engineer you develop a sense of ownership for the code & architecture
You deliver value by getting the usefulness of software into the hands of users
You are part of a cross-functional team following agile methodologies
You write clean, testable, scalable and maintainable code that complies with web standards and best practices
You improve development knowledge/skills of the team by pair programming, teaching best practices in our trecker tech talks and by doing code reviews
You share your experience in building large-scale single-page applications and work on RESTful APIs and websockets
You support our team with your knowledge in designing scalable architecture and building processes with tools like webpack and package managers such as NPM
Plan, architect and integrate functionality in collaboration with backend, frontend, mobile developers and PM
You fit perfectly if you
Preferably have a BS/MS in Computer Science or a related technical field
Your actions are guided by the purpose to bring value to the user
Several years of professional experience and excellent knowledge of backend development, technologies - particularly Ruby on Rails; Node.js + Golang are a plus
Strong knowledge of OOP, REST and Microservices
Experience with messaging systems, such as RabbitMQ or SQS, and distributed cache systems, such as Redis
Good knowledge in backend infrastructure technologies like Linux, AWS, Continuous Integration/Delivery, Docker
Disciplined approach to automated testing and quality assurance
Prior experience with source control tools – Git, Github
Knowledge of Elasticsearch is big plus
Familiarity with native mobile development (iOS/Android) and Web front-end development (HTML5) would be a bonus
Senior Software Engineer OLX Group Berlin, Germany €65,000 to €90,000 a year
October 2018
2 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
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.
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.
Software Engineer collectAI Berlin, Germany €50,000 to €70,000 a year
October 2018
2 Applicants This Week
More Than 6 Months Old
This job posting is no longer available
Job Description
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
Strong problem solving skills
Good understanding of computer science fundamentals
Passion for clean, simple and robust code
Preferred Qualifications
Experience with Golang and JavaScript
Exposure to Docker, Kubernetes and Prometheus
Knowledge of micro-service principles and best practices
Benefits
An international team of experienced tech and business people
Self-responsibility and encouragement to realize your own ideas
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