June 18, 2026

Java Developer (media/streaming)

Senior • Remote

21,000 - 25,000 PLN

Warsaw, Poland

Our client is a leader in the media industry from the USA. We are looking for a specialist who will develop modern applications, adapting them to the requirements of various markets, such as European and American.

Our expectations

Min. 5 years of experience as Java developer

Experience with and good knowledge of:

  • Java 17 - 25, Gradle

  • Spring Boot 3.x - 4.x

  • Spring Data JPA + PostgreSQL

  • Liquibase (schema migrations)

  • Apache Kafka

  • REST API design (incl. Spring Data REST / HAL conventions)

  • Unit 5

  • Git + Jenkins (CI/CD)

  • AI-assisted development — Claude Code, Cursor, or GitHub Copilot

  • Cloud platform experience GCP/AWS

  • Microservices integration patterns

A growth mindset paired with a passion for programming

Critical thinking, along with an understanding of the business context and its impact on technical solutions

Very good command of English, min. B2 level

Flexibility to work shift hours matching US time zones (12:00 – 20:00 Polish time) or for hybrid work in client's office (Warsaw), would be considered a major advantage

Welcome Skills

Experience with and good knowledge of:

  • Observability: Micrometer, New Relic

  • Docker / docker-compose (local environment)

  • K8s

  • GraphQL

  • Cloud AI services - using managed LLMs (GCP Vertex AI / Gemini) for automated data and media processing

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Warsaw, Poland

120 - 130 PLN/hr

🏢 Summary: Long-term B2B opportunity for Mid and Senior Backend Developers (Java) in the telecom sector, focused on building and developing modern backend systems with AI elements. The role involves designing REST APIs, working with event-driven architecture, and maintaining production-grade distributed systems. Senior candidates additionally drive system design, migrations, and production ownership. 🗂️ Requirements: 4+ years (Mid) or 6+ years (Senior) commercial backend experience, Strong knowledge of Java 21+, Hands-on experience with Spring Boot 3.x, Experience designing and developing REST APIs, Knowledge of OpenAPI and system integrations, Experience with event-driven architecture, Experience with unit and integration testing, Experience with monitoring, logging, troubleshooting, Knowledge of Spring Security, OAuth2, JWT, Experience with NoSQL databases, Experience with Maven or similar build tools, For Senior: experience designing distributed systems, For Senior: production ownership and incident handling, For Senior: experience leading technology migrations 📃 Skills: Java, Spring, SpringBoot, REST, OpenAPI, OAuth2, JWT, MongoDB, NoSQL, Maven, EventDriven, DistributedSystems, Monitoring, Logging, Troubleshooting, Node.js, TypeScript, Express, Fastify, NestJS, Kafka, RabbitMQ, GraphQL, Docker, Kubernetes, Terraform, OpenTelemetry, Jest, Vitest, npm, pnpm 🏢 Description: Dla klienta z branży telekomunikacyjnej poszukujemy Senior i Mid Backend Developerów (Java) z AI do długofalowej współpracy! ZADANIA WYMAGANIA Wymagania – Mid Minimum 4+ lata doświadczenia komercyjnego w backend development Bardzo dobra znajomość Java 21+ Praktyczne doświadczenie w Spring Boot 3.x Doświadczenie w projektowaniu i rozwijaniu REST API Znajomość OpenAPI oraz integracji systemowych Doświadczenie w architekturze event-driven Znajomość testów jednostkowych i integracyjnych Doświadczenie z monitoringiem, logowaniem i troubleshootingiem Znajomość Spring Security / OAuth2 / JWT Praca z bazami NoSQL (np. MongoDB) Znajomość Maven lub podobnych narzędzi buildowych Angielski minimum B2 Wymagania – Senior Minimum 6+ lat doświadczenia komercyjnego w backend development Wszystko co w wymaganiach na Mid powyżej Doświadczenie w projektowaniu systemów rozproszonych Ownership produkcyjny i rozwiązywanie incydentów production Doświadczenie w prowadzeniu migracji technologicznych Mentoring juniorów i midów Bardzo dobra znajomość API design, integracji i architektury event-driven Angielski minimum B2 MILE WIDZIANE Komercyjne doświadczenie z Node.js oraz TypeScript (mocno preferowane) Express / Fastify / NestJS Kafka lub RabbitMQ GraphQL Docker / Kubernetes Terraform OpenTelemetry Jest / Vitest npm / pnpm CO OFERUJEMY NA TYM PROJEKCIE? Współpracę w oparciu o umowę B2B i stawkę: 150-175zł/h netto + VAT dla seniora, 120-130zł/h netto + VAT dla mida. Pracę hybrydową z Warszawy (1-2 razy w tygodniu w biura). Wsparcie dedykowanego opiekuna. Po dołączeniu do speedapp, otrzymasz kontakt do dedykowanego opiekuna, który zadba, aby współpraca z nami oraz z klientem sprawiała Ci satysfakcję. Wydarzenia oraz spotkania integracyjne, a także udział w różnych inicjatywach np. sportowych. Dostęp do oferty benefitów (opieka medyczna, ubezpieczenie na życie, karta Multisport). JAK WYGLĄDA REKRUTACJA? Zgłoszenie : Zaaplikuj i prześlij swoje CV. Po weryfikacji aplikacji rekruter skontaktuje się telefonicznie z wybranymi kandydatami. Screening : Porozmawiaj z rekruterem speedapp o Twoim doświadczeniu . Kolejne etapy: Rekruter speedapp przedstawi Ci jak wygląda proces rekrutacji na dane stanowisko. Rekruter speedapp pozostanie z Tobą w kontakcie podczas całego procesu. O SPEEDAPP W speedapp wierzymy, że organizacja jest tak dobra jak tworzący ją ludzie. Jesteśmy zespołem ekspertów IT i innych specjalistów pracujących dla naszych klientów na całym świecie (m.in Izrael, Austria, USA). Wykraczamy daleko poza kategorię HR. Budujemy zespoły IT, a także pomagamy w ich zarządzaniu. 👉 10 lat doświadczenia 👉 +100 klientów na całym świecie +300 zatrudnień rocznie 💎 Jesteśmy laureatem prestiżowej nagrody Diamenty Forbes cztery lata z rzędu (2022, 2023, 2024, 2025), członkiem sieci Fast Growth Icons oraz FinTech Poland. MASZ PYTANIA? Skontaktuj się bezpośrednio z rekruterem odpowiedzialnym za ten proces. Aleksandra Mazur Junior IT Delivery Consultant aleksandra.mazur@speedapp.pl +48 728 360 029