Senior Full Stack Engineer

1 tydzień temu

Warszawa, Mazovia, Polska act digital Pełny etat 60 000 USD - 70 000 USD rocznie

Company Description

Our mission as a company providing IT services is to provide our clients all over the world with the best solutions. We manage to do this by analyzing the needs of our clients and matching them to the skills and aspirations of our employees. Therefore, one of our main motivations is to provide each Employee and Consultant with a satisfying experience. Joining us means being part of a community with diverse personalities. Start your adventure with
act digital Polska

Job Description

As a Senior Frontend Full Stack Engineer, you will join us at an exciting inflection point: you'll help shape the way thousands of enterprise-users engage with our platform. You'll work with a team of software engineers, data scientists, product experts and business

analysts to craft next-generation web applications and user experiences that bring our powerful automation engine to life.

Your role will be foundational in translating data-rich insights into intuitive, performant, and scalable interfaces bridging the gap between advanced AI infrastructure and real-world business impact. If you are passionate about working at the intersection of rich front-end engineering, full-stack product delivery and enterprise AI innovation, and you thrive in a fast-moving, deeply technical team, then we'd love to hear from you.

Qualifications

  • 5+ years
    of experience in
    software development
    .
  • React + TypeScript
    (advanced).
  • Strong
    JavaScript
    fundamentals (async modules, performance).
  • Experience with
    Vite, ESLint, modern tooling
    .
  • Building scalable
    UI with components, hooks, and context
    .
  • Integrating with
    REST APIs, async flows, error handling
    .
  • Writing maintainable
    code + strong code review skills
    .
  • Familiar with
    LLM-based features (streaming, prompts, AI-driven UI)
    .
  • Testing with
    Vitest/Jest + React Testing Library
    .
  • Good UX instincts & ability to work independently.
  • Python backend
    familiarity (FastAPI/async I/O, API contracts).
  • English B2+/C1 level
    .

Nice to have

  • Experience with Electron apps (main/renderer, preload, IPC).
  • React Query / Zustand or other state libraries.
  • Advanced TypeScript patterns (generics, mapped types).
  • Performance debugging (React Profiler, bundle optimization).
  • Knowledge of Radix/shadcn/ui or similar component libraries.
  • fundamentals.
  • Event-driven systems familiarity.

Additional Information

  • Work model:
    Hybrid from Warsaw
  • Type of contract:
    B2B
  • Rate:
    up to 200 PLN net per hour
  • Project:
    Long-term (2+ years)
  • Start:
    ASAP-1 month

We offer

  • Access to local and international projects - Clients from France, Germany, Portugal, UK, and Benelux.
  • Professional development support - trainings, technical certificates, conference participation, foreign language classes, and soft skills trainings are subsidized for up to 2 000 PLN.
  • Bonus for recommending Candidates starting from 6 000 up to 10000 PLN.
  • Fully paid Medicover healthcare card.
  • Psychological support program WellBee.
  • Multisport card.
  • Regular integration events and gifts.
  • Long-term cooperation.
  • Relocation Program.

If You applied for this position the Controller of your personal will be ACT DIGITAL POLSKA Sp. z o.o., with its registered office at
Przyokopowa 31, Warsaw
. The personal data provided by you will be processed for the purpose of the recruitment process and for future recruitment processes.

You have the right to access the content of your data, request their rectification, erasure, restriction of processing, the right to data portability, the right to object to the processing of your data and the right to lodge a complaint to the President of the Personal Data Protection Office.

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