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Sigma IT Poland

Frontend Developer (React/TypeScript)

Sigma IT Poland
Poland · Contract · Entry
Description

Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers.

If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊

We are looking for a Frontend Developer to join a team whose main mission is to deliver data to scientists. This data is used to identify new therapeutic targets within the research and development program and to provide human genetics insights for clinical research.

We offer a B2B contract: 130 – 150 PLN net/hour + VAT

✅Core Technical Skills

You might be the perfect match if you are/have:

  • 4+ years of experience as a Frontend Developer;
  • Strong proficiency in JavaScript/TypeScript with solid experience in React (hooks, state management, component architecture, performance optimisation);
  • Experience in API design and integration (REST) and effective collaboration with backend teams;
  • Practical experience with Node.js for tooling, build scripts or lightweight backend services;
  • Good understanding of modern frontend tooling and ecosystem: Webpack/Vite, ESLint/Prettier, package managers, testing frameworks;
  • Experience working with design systems, component libraries, accessibility standards and responsive UI;
  • Strong understanding of software engineering best practices — clean code, modular design, code reviews, documentation.

✅Complementary Full-stack Strengths

  • Good knowledge of Python (3.x) as a supporting skill in cross-functional environments;
  • Understanding of relational and NoSQL databases (Postgres, Snowflake, DynamoDB);
  • Experience with Docker and cloud platforms (AWS / GCP), supporting efficient FE–BE integration;
  • Comfortable working in Unix/Linux environments and with Bash scripting.

✅Ways Of Working

  • Proactive and self-driven, able to propose improvements and push initiatives forward;
  • Strong team player with great communication skills; comfortable participating in design discussions and code reviews;
  • Positive, solution-oriented mindset;
  • Quick learner, eager to grow and expand technical skills;
  • Fluent English (C1) for effective collaboration in international environments;
  • Location in Poland (at least 5 years);
  • Available within one month.

Moreover, We Appreciate Skills In These Areas

  • Experience with CI/CD pipelines for building and deploying FE applications;
  • Familiarity with Python frameworks like FastAPI/Flask (useful in integration work);
  • Experience with testing tools such as Playwright, Cypress, or Jest;
  • Interest in Life Sciences/Drug Discovery domain.

By Joining Us, You Gain The Following

  • Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT;
  • Possibility to develop in cloud technologies;
  • Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen;
  • Respect for your private life so you don't have to work overtime or on weekends;
  • Team Events budget to socialize outside of work;
  • Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona).

Perks And Benefits

  • Fully remote work or in our office in Wrocław;
  • Benefits such as Luxmed, Multisport, and life insurance in Nationale Nederlanden;
  • Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior);
  • Personal Training Budget with additional paid hours;
  • Passion Day - an extra day off for your hobby to spend as you please;
  • Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you;
  • We provide high-quality work equipment + 2 additional monitors and accessories.

If you apply for this position and match our expectations, then:

  • You will be invited to an HR Screening with our IT Recruiter.
  • You will have a technical interview.
  • You will meet with a client.

Submit your application online in one easy step! Apply now!

Key Skills

Ranked by relevance

python cloud design systems responsive docker react nosql bash cicd aws gcp
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Country Guide

Poland

Fast-growing Central European IT hub

Posted
Feb 07, 2026
Type
Contract
Level
Entry
Location
Wrocław
Company
Sigma IT Poland

Industries

IT Services IT Consulting

Categories

Engineering Information Technology

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