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Senior FullStack Software Engineer
  • Kraków
Senior FullStack Software Engineer
Kraków, Kraków, Lesser Poland Voivodeship, Polska
N-iX
2. 2. 2026
Informacje o stanowisku

(#4649)

We are looking for a Senior FullStack Engineer to join our team.

Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Senior FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

Responsibilities:

  • Developing fast, high-traffic public-facing websites

  • Explore new technologies and help the team to use them

  • Work using AI tools and apply them to the SDLC

  • Following software development best practices while delivering the work

  • Following testing principles while testing your own code to ensure production readiness

  • Follow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes) 

Requirements: 

  • 4+ years developing reliable, highly available, and scalable software systems

  • Strong understanding of software architecture and design patterns

  • Firm grasp of clean code principles and coding standards

  • Strong proficiency using AI tooling, such as ChatGPT/Codex, for rapid development

  • Experience integrating AI tooling into your development environment for streamlined usage

  • Experience with AI Frameworks like Vercel AI SDK, LangChain, etc.

  • Strong proficiency with backend development (Typescript, Node.js, C#)

  • Strong proficiency with SQL & NoSQL datastores (GraphQL, Redis)

  • Strong proficiency with frontend development (HTML, CSS, JavaScript)

  • Strong proficiency with component-based frameworks and SSR (Next.js/React, Vue.js, Angular)

  • Hands-on experience developing and maintaining 3rd party content management systems

  • Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker

  • Experience with APIs and developing in a service-based application environment

  • Experience building optimized UIs for performance

  • Proficiency with version control systems such as Git

  • Experience working within a formal CI/CD pipeline

  • Experience with logging, monitoring, and alerting services like Datadog, Newrelic

  • Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend

  • At least Upper-intermediate English level

  • Working for the North America timezone (ET) is preferable (till 21:00 Kyiv time)

We offer:

  • Flexible working format - remote, office-based or flexible

  • A competitive salary and good compensation package

  • Personalized career growth

  • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

  • Active tech communities with regular knowledge sharing

  • Education reimbursement

  • Memorable anniversary presents

  • Corporate events and team buildings

  • Other location-specific benefits

  • Praca Kraków
  • Kraków - Oferty pracy w okolicznych lokalizacjach


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