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React Frontend Developer – Java/Python Backend Exposure
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Offer summary

(Summary generated by AI based on the full job description)

The project involves building and optimizing trading infrastructure in the financial sector, covering derivatives, FX, commodities, rates, and stocks. Required skills include React JS (Hooks, Context API), JavaScript, modern CSS (CSS-in-JS, SCSS), and unit testing with Jest. Responsibilities include developing scalable UIs, collaborating with backend teams (Java, Python), CI/CD integration (GitLab), and participating in UI design aligned with UX principles. Benefits include private medical care, multisport access, and Pluralsight subscription.

newyou can start ASAP

React Frontend Developer – Java/Python Backend Exposure

Company: ITDS Polska Sp. z o.o.

from: 8 June 2026
to: 8 July 2026
22 050 - 25 200 złnet (+ VAT)/ mth.B2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:mid • senior
working mode:hybrid
location:Warszawa, Masovian
Warszawa, Masovian

Requirements

Expected technologies

React.js
JavaScript
CSS
Jest
GitLab

Optional technologies

Java
Python

Operating system

Windows

Our requirements

  • Minimum 4 years of commercial frontend development experience.
  • Strong proficiency in React JS, JavaScript, and modern CSS.
  • Sound understanding of design patterns and best programming practices.
  • Experience with Jest testing framework.
  • Working knowledge of CI/CD processes and tools (GitLab).

Optional

  • Basic backend knowledge in Java or Python.
  • Experience with Ag-Grid library.
  • Knowledge of good UX principles.
  • Certifications or additional training in frontend technologies.

Your responsibilities

  • Develop and optimize high-performance, scalable user interfaces using React JS (Hooks / Context API).
  • Implement modern CSS techniques (CSS-in-JS / SCSS) to enhance user experiences.
  • Collaborate with cross-functional teams to deliver seamless frontend solutions.
  • Write robust unit tests with Jest and contribute to code quality standards.
  • Contribute to modern frontend workflows, including npm, CI/CD pipelines (GitLab).
  • Support backend integration using Java or Python (exposure welcome).
  • Participate actively in UI design discussions to align with UX principles.
  • Maintain and improve existing systems, ensuring low latency and high-volume trading efficiency.

About the project

As a Senior Frontend Developer, you will be working for our client, a leader in systematic trading strategies within the financial industry.
You will contribute to building and optimizing critical trading infrastructure across derivatives, FX, commodities, rates, and single stocks, helping to drive performance and scalability in digital trading solutions. Join us and be at the forefront of innovation and growth in financial technology.
Hook – one bold sentence
Empower scalable UI innovation — shape the future of high-frequency trading platforms!
Warszawa-based opportunity with hybrid work model.
Only candidates with an existing legal right to work in the European Union will be considered for this role.

This is how we organize our work

This is how we work

at the client's siteagilescrum

This is how we work on a project

  • Continuous Deployment
  • Continuous Integration

#GETREADY to meet with us!

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people.
We would like to meet you. If you are interested please apply and attach your CV in English or Polish, including a statement that you agree to our processing and storing of your personal data.

ITDS’s Whistleblower Procedure

📌 You can report violations in accordance with ITDS’s Whistleblower Procedure available here: https://itds.pl/wp-content/uploads/2025/03/INFORMATION-ON-PROCEDURE-FOR-REPORTING-BREACHES-AND-PROTECTION-OF-WHISTLEBLOWERS-AT-ITDS-POLSKA.pdf
Company

What we offer

  • Stable and long-term cooperation with very good conditions
  • Enhance your skills and develop your expertise in the financial industry
  • Work on the most strategic projects available in the market
  • Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years
  • Participate in Social Events, training, and work in an international environment
  • Access to attractive Medical Package
  • Access to Multisport Program
  • Access to Pluralsight
  • Flexible hours

Benefits

  • sharing the costs of sports activities
  • private medical care
  • flexible working time
  • fruits
  • integration events
  • corporate gym
  • saving & investment scheme
  • no dress code
  • coffee / tea
  • drinks
  • christmas gifts
  • birthday celebration
  • sharing the costs of a streaming platform subscription
  • access to +100 projects
  • access to Pluralsight

Recruitment stages

  • 1.
    online interview
  • 2.
    online interview

ITDS Polska Sp. z o.o.

ITDS supports financial service providers to take the next steps.
We identify what’s possible, every day. Opportunities in the areas of technology, organization, and digitization.
We see where banks, insurers, payment companies, or fintech can go and how they can get there.
That’s why we want to stimulate you to ramp up your ambition. Forget what you perceive as restraints and step towards the new reality.
ITDS in Poland - Pure player in new Technologies & Financial Industry
+300 IT implementation professionals
+20 clients in the Banking, Insurance, Payment & Fintech Industry
ITDS excels in digital strategy delivery and implementation of best-of-breed lending solutions. ITDS has delivered successful strategic projects throughout Europe since 1998. We combine the experience we’ve accumulated with in-depth knowledge of technologies, business processes, and EU legislation to unlock new business opportunities.

This is how we work

React Frontend Developer – Java/Python Backend Exposure
22.1k–25.2k zł / mth. (B2B)
I apply to:
ITDS Polska Sp. z o.o.
Warszawa, Masovian
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