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Senior Fullstack Developer with Node.js
  • Warsaw
Senior Fullstack Developer with Node.js
Warszawa, Warsaw, Masovian Voivodeship, Polska
Sii Sp. z o.o.
9. 10. 2025
Informacje o stanowisku

Senior Fullstack Developer with Node.js

Miejsce pracy: Warszawa

Technologies we use

Expected
  • Node.js
  • React.js
  • JavaScript
Optional
  • Python
  • Svelte

About the project

We are seeking a motivated Fullstack Developer to join our client’s remote Financial Crimes Risk Management team. You will play a key role in combating financial crime by developing server-side solutions using Node.js.

Your responsibilities

  • Building and maintaining efficient, scalable backend systems
  • Designing and managing high-performance databases
  • Developing APIs for frontend and third-party integrations
  • Ensuring security, data protection, and application performance
  • Diagnosing and resolving technical issues quickly and effectively
  • Collaborating with cross-functional teams to deliver technical solutions
  • Following best practices for code quality, documentation, and version control

Our requirements

  • 5–8 years of backend development experience
  • Proficiency in Node.js, including building server-side components and data processing
  • Skilled in building dynamic web interfaces using React, Svelte, or similar modern web technologies
  • Previous experience with Kubernetes, Docker, ArgoCD, and distributed systems
  • Awareness of monitoring, observability, and fault tolerance best practices
  • Understanding of RESTful APIs, cloud platforms (AWS/Azure/GCP), and Git
  • Familiarity with JIRA, Azure DevOps, and secure web development principles
  • Bachelor’s or Master’s in Computer Science or related field
  • Fluency in English
  • Residing in Poland required
Optional
  • Experience with Python

What we offer

  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People

Recruitment stages

  • Send your CV
  • Talk to us about your expectations
  • Learn more about our projects and choose the best
  • Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 500 professionals and implement projects in a variety of industries for clients from many countries around the world.

The Great Place to Work title, won 10 times in a row, proves that at Sii we create a friendly work environment.

  • Praca Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


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