Senior Full Stack Developer (Java and React) w Warszawa, Polska

Senior Full Stack Developer (Java and React)

Miejsce pracy: Warszawa

Technologies we use

Expected

• Java
• Spring Boot
• Spring Framework
• TypeScript
• https://jobeax.com/link/6WcBICn0LM558SP0
• PostgreSQL
• HTML
• CSS

Optional

• AWS
• Kubernetes
• Vite
• webpack

Operating system

• Linux

About the project

The project focuses on building enterprise-grade solutions that provide advanced reporting, data visualization, and analytics capabilities integrated with widely used collaboration and work management platforms.

The product serves a large global user base and continues to evolve with new features aimed at improving productivity, decision making, and user experience.

This is how we organize our work

Team size

12-15

This is how we work

• you focus on product development
• agile

Team members

• backend developer
• frontend developer
• technical leader
• devOps
• automated test programmer
• manual tester
• support
• product owner
• project manager

Your responsibilities

• Design, develop, and maintain new features and modules across backend and frontend components
• Support, enhance, and continuously improve the existing codebase
• Build deep product knowledge, including its integrations, data flows, and ecosystem
• Investigate and troubleshoot technical issues, working closely with support teams to provide end-to-end solutions
• Collaborate with Product Managers, Software Engineers, QA Engineers, SRE teams, and other stakeholders throughout the development lifecycle
• Create unit and integration tests to ensure software quality and reliability
• Participate in peer code reviews and promote engineering best practices
• Develop and maintain integrations with third-party tools and external systems

Our requirements

• 5+ years of commercial experience in full-stack software development
• Strong backend expertise with Java and Spring (Boot, MVC, Data)
• Experience designing and implementing APIs
• Solid knowledge of relational databases, particularly PostgreSQL, including debugging performance and data-related issues
• Strong understanding of OOP principles, design patterns, and Test-Driven Development (TDD)
• Hands-on experience building production-grade applications with React, including hooks, component composition, and performance optimization
• Strong proficiency in TypeScript, including advanced typing and type-safe application design
• Experience working with state management libraries such as MobX, Redux, or similar solutions
• Good understanding of modern build tools and frontend tooling, including Vite or Webpack
• Strong analytical and problem-solving skills with the ability to investigate unfamiliar technical challenges
• High level of ownership and ability to work independently in a remote environment
• Ability to start tasks with incomplete specifications and refine requirements during implementation
• Upper-intermediate (B2+) or higher level of spoken and written English
• Strong communication skills and ability to collaborate effectively in an international environment

Optional

• Experience developing applications within the Atlassian ecosystem (e.g. Atlassian Forge)
• Familiarity with analytics, reporting solutions, or data integration protocols
• Experience working with AWS services (EC2, ElastiCache, RDS), Kubernetes, and CI/CD pipelines
• Knowledge of performance optimization techniques and secure coding practices
• Experience supporting customer-facing products and collaborating with support teams

What we offer

• Vacation days: Up to 26 business days per year
• 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types
• Health and life insurance (Luxmed)
• MyBenefit platform with Multisport option
• Internal psychological support service
• English language classes from the first working day
• Access to external learning platforms: O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training
• Flexible workplace: work from the office, from home, or choose a hybrid option
• Tech Skills Mentoring Program
• Opportunities to develop as a public speaker, mentor, or technical interviewer
• Certification reimbursement (AWS, GCP, Microsoft, etc.)

This is how we work on a project

• code review
• TDD
• integration tests
• test automation
• unit tests

Development opportunities we offer

• substantive support from technological leaders
• technical knowledge exchange within the company
• time for development of your ideas

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of foreign language classes
• sharing the costs of professional training & courses
• life insurance
• remote work opportunities
• flexible working time
• corporate products and services at discounted prices
• integration events
• employee referral program
• extra leave

DataArt Poland sp. z o.o.

Our client is a big enterprise in Travel & Hospitality domain.

By applying, I consent to the processing of my personal data for the purpose of conducting the recruitment process. Informujemy, że administratorem danych jest DataArt Poland Sp z o o z siedzibą w Lublinie, Ul. Zana 39 a, 20-601 Lublin (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 Just Join IT oraz inne podmioty, którym powierzyliśmy przetwarzanie danych w związku z rekrutacją