Senior Backend Engineer (Remote)

nextbike GmbH; Warszawa; Hybrid; EUR 40,000 - 60,000; Full time

Job summary

Join a leading player in urban mobility as a web developer to build and enhance systems for a major bike-sharing network. In this full-time role, you'll collaborate in an international team, developing impactful technologies while enjoying flexible work options and robust benefits.

Benefits

On-site / hybrid / remote working options

Access to professional growth and training

Multisport card for fitness

Optional medical package enrollment (Luxmed)

Exclusive discounts on Nextbike services

Qualifications

• Solid experience in web development, particularly with Node.js and SQL.
• Proficiency in TypeScript and familiarity with relational databases.
• Professional-level English required for collaboration in an international context.

Responsibilities

• Develop and maintain analytical tools for bike-sharing operations.
• Collaborate with cross-functional teams to implement solutions.
• Ensure system reliability and scalability for thousands of city bikes.

Skills

Web development

Node.js

SQL

TypeScript

Problem-solving

Job description

Your mission

Step into a newly created full-time role where you’ll have a pivotal impact on developing and enhancing innovative systems that support our operational teams driving one of Europe’s largest bike-sharing networks. Work on an exciting international project, leveraging your expertise to shape the future of urban mobility and influence millions of daily users.

• Develop and maintain analytical tools and systems essential for daily bike-sharing operations.
• Collaborate with cross-functional teams, including Infrastructure and DevOps, to implement solutions.
• Gather and analyze requirements to plan and drive project development.
• Writing efficient, well-documented code.
• Debugging, profiling and maintaining backend services.
• Ensure system reliability and scalability to support thousands of city bikes across Poland.

Your profile

• Solid experience in web development, with strong expertise in Node.js and SQL.
• Proficiency in TypeScript and experience with relational databases (PostgreSQL, MySQL).
• Familiarity with cloud environments (AWS) and hands-on experience with testing and production deployments.
• Strong problem-solving skills and the ability to work with our tech stack (Node.js, TypeScript, PostgreSQL, Kafka).
• Professional-level English for effective collaboration in an international team.

It’s a plus if you have experience with Kafka, CDC, key-value stores like Redis, as well as familiarity with stream-processing, data warehousing (Snowflake), and tools like dbt.

Why nextbike?

Nextbike Polska - a leader in the sharing economy industry offering comprehensive solutions that complement traditional urban transport. It has been operating in Poland since 2011 and in Finland since 2017. Nextbike Polska cooperates with local governments and business partners, creating and developing the largest and most popular bike-sharing systems in Poland - including Veturilo, Metrorower, and Wrocławski Rower Miejski. Over 8 million people in dozens of cities in Poland already have access to Nextbike bicycles.

Benefits

• On-site / hybrid / remote (choose your preferred option)
• Have real impact by developing tools that shape modern urban mobility
• Access professional growth and training opportunities
• Enjoy a Multisport card for your fitness and well-being
• Optional enrollment in a comprehensive medical package (Luxmed)
• Benefit from exclusive discounts on company services, including Nextbike systems
• A mission-driven and collaborative international team

We are open to both employment contracts and contractor (B2B) arrangements, so you can choose the option that best suits your preferences and working style.