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Offer summary
(Summary generated by AI based on the full job description)
The project focuses on developing intelligent advertising systems and automating campaigns on Allegro Ads platform. It involves Kotlin, Spring Boot, React, TypeScript, MongoDB, SQL, microservices architecture, and GCP cloud. Responsibilities include backend development using machine learning recommendation engines, building scalable APIs and microfrontends, and ensuring high code quality through testing and team collaboration.
Senior Fullstack Engineer – React and Kotlin Specialists
Company: ITDS Polska Sp. z o.o.
from: 22 May 2026
to: 21 June 2026
18 480 - 21 840 złnet (+ VAT)/ mth.B2B contract (full-time)
salary not specifiedcontract of employment
Salary details
basic salary
Offer parameters
level:senior
working mode:remote
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
React.js
Kotlin
TypeScript
HTML
CSS
Spring Boot
Google Cloud Platform
MongoDB
SQL
Operating system
Windows
Our requirements
- At least 3 years of experience in full-stack development, with a focus on React and Kotlin.
- Strong proficiency in TypeScript, React, HTML/CSS, and backend technologies like Kotlin, Spring Boot, and microservices.
- Experience working with cloud ecosystems, preferably GCP.
- Solid understanding of database management, including MongoDB and SQL.
- Familiarity with event-driven architectures and large-scale data processing.
- Ability to communicate effectively in Polish and English.
- Experience working in an Agile environment with a focus on delivering high-quality software.
Optional
- Certifications related to GCP or microservices architecture.
- Experience with agentic coding tools like Copilot/OpenCode.
- Knowledge of accessibility standards (a11y) and performance optimization techniques.
Your responsibilities
- Develop and maintain backend services using Kotlin, integrating machine learning-driven recommendation engines in collaboration with data science teams.
- Build scalable, event-driven architectures to process large data volumes within cloud environments, leveraging GCP.
- Design and implement high-performance APIs to support analytical dashboards and market benchmarks.
- Create and optimize scalable microfrontends using React, prioritizing accessibility and server-side rendering for analytical tools.
- Collaborate with cross-functional teams to deliver seamless, secure, and efficient software solutions.
- Ensure high code quality through testing frameworks such as Jest, Vitest, or Playwright, with a focus on performance and reliability.
- Contribute to evolving microservice architectures, utilizing Spring Boot, MongoDB, SQL, and cloud-native tools.
- Participate actively in code reviews, sprint planning, and technical discussions to foster continuous improvement.
About the project
As a Senior Fullstack Engineer – React and Kotlin Specialists, you will be working for our client, a leader in building advanced advertising tools, focusing on creating intelligent recommendation systems and automating campaign management for advertisers on Allegro Ads. Join a mission-driven project that revolutionizes how businesses grow through cutting-edge technology and data-driven insights, offering exciting avenues for professional growth and innovation.
Unleash innovation — design the future of intelligent advertising ecosystems!
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
#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
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 & remote work.
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
Senior Fullstack Engineer – React and Kotlin Specialists
18.5k–21.8k zł / mth. (B2B)
I apply to:
ITDS Polska Sp. z o.o.
Warszawa, Masovian
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Informujemy, że administratorem danych jest ITDS z siedzibą w Warszawie, ul. Złota 59 (dalej jako "administrator"). Masz prawo do żądania dostępu do swoich danych osobowych, ich sprostowania, usunięcia lub ograniczenia przetwarzania, prawo do wniesienia sprzeciwu wobec przetwarzania, a także prawo do przenoszenia danych oraz wniesienia skargi do organu nadzorczego. Dane osobowe przetwarzane będą w celu realizacji procesu rekrutacji. Podanie danych w zakresie wynikającym z ustawy z dnia 26 czerwca 1974 r. Kodeks pracy jest obowiązkowe. W pozostałym zakresie podanie danych jest dobrowolne. Odmowa podania danych obowiązkowych może skutkować brakiem możliwości przeprowadzenia procesu rekrutacji. Administrator przetwarza dane obowiązkowe na podstawie ciążącego na nim obowiązku prawnego, zaś w zakresie danych dodatkowych podstawą przetwarzania jest zgoda. Dane osobowe będą przetwarzane do czasu zakończenia postępowania rekrutacyjnego i przez okres możliwości dochodzenia ewentualnych roszczeń, a w przypadku wyrażenia zgody na udział w przyszłych postępowaniach rekrutacyjnych - do czasu wycofania tej zgody. Zgoda na przetwarzanie danych osobowych może zostać wycofana w dowolnym momencie. Odbiorcą danych jest serwis Hello HR oraz inne podmioty, którym powierzyliśmy przetwarzanie danych w związku z rekrutacją.
Naruszenia można zgłaszać zgodnie z Procedurą zgłaszania nieprawidłowości ITDS dostępną tutaj:
https://itds.pl/wp-content/uploads/2025/03/INFORMATION-ON-PROCEDURE-FOR-REPORTING-BREACHES-AND-PROTECTION-OF-WHISTLEBLOWERS-AT-ITDS-POLSKA.pdf
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