Senior Full-Stack Engineer (Python + React)

We are looking for an experienced Senior Full-Stack Engineer to join an exciting project for our banking sector Client. If you have a strong background in JavaScript (React) and Python, and want to work on innovative financial solutions, this opportunity is for you!

Key responsibilities

• Developing and maintaining full-stack applications with JavaScript (React) and Python
• Designing, building, and managing databases and APIs
• Working with Microservices architecture (authentication, authorization, decoupling)
• Implementing RestAPI, WebSocket, and asynchronous methods
• Ensuring high-quality code through version control (GIT/Bitbucket) and best practices
• Optimizing SQL queries (T-SQL, PL/SQL, Spark SQL) for performance and scalability

Ideal candidate profile

• 5+ years of experience with JavaScript and React
• 5+ years of experience in backend development, databases, and APIs
• 4+ years of hands-on experience with Python
• 3+ years of advanced knowledge in SQL
• Strong understanding of front-end and back-end technologies
• Experience in Big Data processing is a plus (Hadoop, Spark, data pipelines)
• Familiarity with GenAI technologies (LangChain, LlamaIndex, multimodal setup) is a big advantage

Conditions

Work model: Hybrid (1 day in the office per week)

Location: Gdynia or Warsaw or Łódź

Rate: 160 - 190 PLN/h (B2B)

Benefits: Private medical care, Life insurance, Multisport card

Recruitment steps

1. Phone screen with recruiter
2. Interview with Hiring Manager 
3. Decision and feedback