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senior backend engineer

We are looking for a senior back-end developer who will expand the competencies of our team and help us to build high-quality, stable, and reliable products, ready for hyper-growth (we're already past the C10k problem). We value teamwork, fast learning, a product mindset, and a programming-language-agnostic approach. Basically, we don't care what is your main technology now. Your willingness to work with our tech stack is what matters the most.

about project

Fixly (part of OLX Group) is one of the largest service marketplaces in Poland. The platform connects customers directly with high-quality service providers, from construction workers to language tutors. We operated as the only engineering team at Fixly and were the key force driving an MVP toward product-market fit and further growth. Our team has been part of Fixly from the very beginning, over 6 years now. We do the UX, product development, software, and infrastructure and generally make this product work.

See our TV ad and other TV ad to find out what Fixly is.

your setup

  • A competent team of engineers working directly with the product and business
  • Bi-weekly sprints, new features regularly
  • Well-established agile dev process
  • Your improvements and suggestions are very welcome


technologies you will work with

  • Node.js
  • TypeScript
  • Kubernetes
  • Docker
  • PostgreSQL
  • GraphQL
  • AWS general architecture
  • DynamoDB
  • SQS
  • Kinesis
  • Golang (optional)
  • Terraform (optional)

nice to have

  • Understanding of AWS technologies: SQS, RDS, DMS, Lambda, Kinesis, CloudWatch, X-ray, OpenSearch and others
  • Microservice architectures, autoscaling strategies
  • Domain Driven Design
  • Database performance, indexing, partitioning, query optimization
  • Docker, Terraform, Kubernetes
  • Real-time applications and protocols (ex. MQTT)


  • Write code
  • Develop new features in API for web and mobile clients
  • Integrate with 3rd party services (payments, accounting, notification services, etc)
  • Refactor and optimize existing architecture with a focus on stability and performance
  • Write tests
  • Take ownership of the system components
  • Work alongside a competent devteam, and participate in the product process
  • Test out new approaches and technologies, and implement them in production

what you'll get

  • Meaningful work
  • No time tracking
  • Like-minded people
  • Internal learning and development program
  • Office that feels like a second home
  • Work-life blend
  • 20 vacation days
  • Sick leaves until you get well
  • Medical care & wellbeing
  • Office gym with a personal trainer
  • Wine culture
  • Parties planned by founders

meet the team

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got more questions?

Reach out to Olga Drapak, our Recruitment Manager, on LinkedIn with any questions about our open positions or life at Rebbix.

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Reach out to Lilia Stetsiuk, our recruiter, on LinkedIn or at with any questions about our open positions or life at Rebbix.

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