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Senior Software Engineer, Backend (Java)

Poland · Job Posted January 10, 2026
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Job Description

Our engineering team solves one of the most important problems of the modern economy - connecting great people with great jobs. We believe this problem can only be solved with technology, and we developed a software platform that has supported over 100M job seekers to date (with 5M joining every month). We are looking for a backend engineer to help us build the next chapter of that vision. We designed our R&D structure based on the empowered product teams model. It means our teams are responsible for business outcomes and have autonomy in solving problems in the way that “customers love yet work for the business”. Our technology platform is a SaaS product hosted on AWS. Our system is composed of hundreds of independent services orchestrated by Kubernetes. We build most of our services in Java, Javascript (Node.js), and Python. We have a strong CI/CD culture, and we currently run 40 production deployments per engineer per month.

Job Responsibility

  • Contribute to a full life-cycle of the product (including problem discovery, prototyping, design, implementation, and measuring adoption)
  • Build services with Java / Node.js (Express, Nest.js) on top of Kubernetes/AWS infrastructure
  • Build developer-friendly RESTful APIs
  • Design and connect to our persistence layer (PostgreSQL, ElasticSearch)
  • Collaborate with other teams

Requirements

  • Proven experience in designing, developing, and operating distributed systems
  • Experience in supporting end-to-end product lifecycle (from product discovery, solutioning, system design, implementation, production rollout, and optimization)
  • While not strictly required, we see that most of our Senior Engineers have 5+ years of professional experience
  • Deep command of the Java programming language
  • Hands-on experience with TDD, clean code, clean architecture principles, and effective code reviews
  • Strong domain modeling skills, including refactoring existing domains
  • Good understanding of persistence layer and RESTful API design
  • Solid understanding of distributed systems design (design for failure, eventual consistency, asynchronous communication, circuit breaking, timeouts, etc.)
  • Strong command of the English language, both written and verbal

Nice to have

  • Experience with CI/CD pipelines and frequent deployments
  • Familiarity with AWS/GCP and Kubernetes/Docker
  • Proven ability to accelerate development using AI coding assistants
  • Hands-on experience building with modern LLM architectures such as Retrieval-Augmented Generation (RAG)
  • Ability to coach and mentor other engineers
  • Excellent collaboration and communication skills

What we offer

  • Remote-friendly culture
  • Competitive salaries
  • Strong internal mobility
  • Meaningful growth opportunities
  • Inclusive work environment
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