senior java engineer

**About the job** At Allegro, we operate at a massive scale where performance and reliability are paramount. Within the Razor team, we maintain the critical backend infrastructure for the entire checkout and purchase path. Our service acts as the central hub, providing essential offer data to nearly 60 critical services - including Show Product, Listings,...

Euroclear is modernising its CREST system by migrating to Java-based services on OpenShift Kubernetes. This role sits in the Group Business Solutions division and offers a hands-on opportunity to shape a long-term transformation with cloud-ready infrastructure.As Senior/Lead Java Software Engineer, you will work in an Agile team, lead design and...

Nordea is seeking a Backend Developer to join Group Technology in Poland, focusing on Savings and Investment Product & Retail Order Management. You will design, develop, and maintain Java applications, build calculation engines for tax compliance across countries, and integrate with tax authorities while delivering customer reports.The role requires strong...

Grid Dynamics is seeking a skilled Mid/Senior Search Engineer to join our engineering team working with a major international retail brand. You will design, build, and deploy highly relevant search experiences using Solr, Lucidworks Fusion, and modern data-oriented Java services.In this role you will optimize queries and pipelines, connect search engines to...

Massive Scale: Design, build, and optimize systems that handle thousands of requests per minute. This is high-availability, high-performance engineering in practice.Modern Tech Stack: Work with a world-class, cloud-native environment. Our core technologies include Kotlin, Spring, Kafka, and Kubernetes. We’re not shy when it comes to ML too :)True Ownership...

Want to work on trading systems at a top N. American Bank This isn’t just another dev role. It’s your chance to engineer the core of global trading. We’re talking ultra-low-latency architectures, real-time market data, and automation at scale — all in an environment where milliseconds matter and billions move. You’ll work on greenfield and...

Kramp is seeking Senior Backend Engineers (Java) to own core domains end-to-end in a dynamic, international team. You will work on scalable APIs, bidding a product mindset across the full development lifecycle while collaborating with product owners and other engineers.The role offers a generous hybrid model and exposure to Kramp’s digital platforms across...

ARQARQ in Kraków is seeking a Backend Engineer to design, develop, and maintain scalable, secure backend systems powering our financial products. You will collaborate with a talented team to deliver reliable services using Java and Spring Boot.You’ll work on greenfield development, REST APIs, and microservices across payments, treasury, and transactions....

Jit Team in Poland is seeking a backend/full-stack developer with at least 5 years of experience to work on a fintech solution. The role focuses on Java-based backend services and APIs, end-to-end feature delivery, and occasional frontend work with Angular/React.Hybrid work from Gdańsk, one day in the office per week. You will collaborate across...

PMSolutions poszukuje doświadczonego Senior Java SE Developera do pracy nad projektami dla czołowych klientów w branży motoryzacyjnej. Rola wymaga silnych umiejętności w programowaniu w Java oraz zdolności do pracy w międzynarodowym zespole.Oferujemy elastyczny czas pracy oraz bogaty pakiet benefitów, w tym prywatną opiekę zdrowotną i inne...

Talanto is seeking a Java Backend Developer with strong Azure experience to design, develop, and continually improve intelligent HR-focused digital products. You will work on Java, Spring Boot, microservices, REST APIs, and GraphQL, while leveraging Azure services and AI concepts in a collaborative agile environment.The role emphasizes quality,...

Capgemini Polska is hiring an experienced Java developer to design, build and maintain Java-based applications supporting public sector processes. You will work with Spring, Hibernate and Kubernetes in a modern CI/CD environment, shaping solutions with architects and product teams in cross‑functional, international groups.Join a company that values...

Vyntra Global, Warsaw-based, is seeking a Backend Software Developer to join the Financial Crime Product Development team in a hybrid setup (2 days on site). You will design and maintain Java backend services within a small autonomous agile team, delivering high-scale, production-grade software for banks and financial institutions.The role emphasizes...

A leading travel technology company is seeking a talented Senior Software Systems Engineer to support its Customer Identity and Access Solutions team in Poland, Województwo małopolskie. This hybrid role involves designing and building services and applications for customer security, using technologies such as Java, Spring and cloud services. Candidates...

Enfint — ведущий финансовый институт, который расширяет инженерную能力 в Польше для создания межплатформенной платформы, соединяющей UI‑слой с несколькими бэкенд-системами. Платформа изначально...

Luxoft is looking for a Java Developer to join their team in Wrocław, Poland. The role involves designing, developing, and maintaining backend services using Java 11+ and Spring Boot in a microservices architecture.The ideal candidate will have strong experience in building RESTful APIs, using Azure cloud technologies including AKS, and implementing...

Grid Dynamics in Wrocław is seeking a Mid/Senior Search Engineer to help build federated, personalized search experiences for a major retail brand. You will work on high-relevance results, data-oriented Java services, and modern cloud architectures.You will implement with Solr and Lucidworks Fusion, connect data sources, and collaborate with product teams...

A dynamic software development firm in Poland seeks an experienced Java API Engineer to design, develop, and maintain scalable backend services and APIs. Ideal candidates will have strong expertise in Java 17, Spring Boot, PostgreSQL, and Google Cloud Platform (GCP), with experience in CI/CD and Agile environments. The role includes collaboration with DevOps...

Responsibilities We are looking for a strong backend engineer who wants to design and scale core systems powering product and assortment management across a large retail ecosystem. You will take ownership of backend architecture and system evolution within the assortment management domain, building scalable services and integrations across a complex,...

Wymagania (must have) minimum 5 lat doświadczenia z Javą, doświadczenie z systemami rozproszonymi, znajomość mikroserwisów opartych o Java 17 i Spring Boot, znajomość narzędzi DevOps, doświadczenie z CI/CD, doświadczenie z Jira i Confluence, doświadczenie z Ansible, doświadczenie w usuwaniu podatności bezpieczeństwa (Vulnerability...