backend engineer nodejs

Wirtualna Polska poszukuje Backend Developera (Golang) do zespołu zajmującego się przetwarzaniem dużych wolumenów eventów i rozwijaniem systemów raportowania.Zakres pracy obejmuje implementację logiki biznesowej, projektowanie modeli danych, pracę z Go, Kafka, Dockerem i GitLab CI, a także udział w code review i decyzjach...

GFT Poland seeks a Senior Backend Consultant to drive AI/ML-focused backend development in Kraków. You will build production-grade Python/Java AI solutions, integrating LLM-based capabilities into the enterprise ecosystem.You will collaborate with architects and platform teams, delivering scalable microservices, secure APIs and CI/CD pipelines, while...

Upsaily.b2b is seeking an experienced AI Engineer to join a team building practical AI solutions. The role blends backend development, AI model integration, and system automation across on-prem and cloud environments.You will work with OpenAI, Azure OpenAI, or open-source models, design AI agent pipelines, and optimize costs and security while collaborating...

A global marketing technology firm in Warsaw is seeking a Senior Software Engineer to design and optimize high-performance backend systems for real-time bidding and machine learning. Candidates should have strong programming skills, experience in developing complex IT systems, and the ability to work within teams. The role offers a highly competitive salary...

Kramp is seeking a Senior Backend Engineer (Java) to take end-to-end ownership of critical domains in the Checkout & Validation team. You will shape the customer journey by building scalable APIs, collaborating with product and business to deliver real value, and shipping in a cloud-based GCP environment.You will work with Java, Spring Boot, and modern tech,...

SimCorp is seeking a Lead Software Engineer to join the Portfolio Analytics product area in Warsaw. You will work in an agile team of 5–7, focusing on backend services, C#, APIs, and cloud-ready architectures.The role emphasizes performance, maintainability, CI/CD, and collaboration with an international team. You will mentor others, explore new...

Salesforce Commerce Cloud - Sr. SFCC Backend Engineer Duration: 6+ Months | Location: Remote | Rate: Depends on Experience Key Responsibilities Backend Development: Design, implement, and maintain SFCC backend functionalities, including business logic and customizations. SFRA Implementation: Extend and optimize SFCC Storefront Reference Architecture (SFRA)...

Prime Insights is headquartered in the US and reaches millions of users through our Market Research Panel. We are seeking a Senior Backend Developer to design, develop, and maintain backend systems using PHP/Laravel, SQL, and RESTful APIs.You will work on high-scale APIs handling millions of requests daily, build custom composer packages, and integrate...

Luxoft in Kraków is seeking a senior backend engineer to design, develop, and maintain cloud-native microservices in Java 11+ with Spring Boot. You will build REST APIs and message-driven services, deploy on Azure AKS, and define infrastructure with Terraform.Responsibilities include containerized apps, CI/CD with GitLab or GitHub, and AI-assisted...

Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. We are looking for a highly motivated Senior Software Engineer to join our Test Enablers team within Test Platform Engineering (Developer Productivity). The Test Enablers team builds and...

About the role The Audience Platform team is part of Customers API, the platform that holds core data about Tesco customers and powers personalized customer communication and experiences across Tesco. The platform processes around 500 million customer attribute updates every week and continues to grow as Tesco increases the scale, relevance, and...

Role Overview: Are you a developer who loves to own the entire lifecycle of an application? We are looking for a Backend Engineer with a strong DevOps mindset to bridge the gap between code and infrastructure for our global Mobile Wallet Platform. Key Responsibilities: - Backend development (Java EE) with a focus on automation and deployment. -...

dmTECH to ponad 1 400 ekspertek i ekspertów z różnych obszarów technologicznych, którzy każdego dnia tworzą, utrzymują i rozwijają rozwiązania retailTECH dla koncernu dm - jednej z największych europejskich sieci drogerii. Działamy w Niemczech, Austrii i Polsce. Każdego dnia efekty naszej pracy budują doświadczenia klientów, osób...

At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe. We’re looking for a highly skilled backend engineer with both strong hands-on coding expertise and deep security knowledge to shape next-generation security solutions. You will design and build secure, scalable services using modern Java, Spring Boot, and...

Role Overview: Are you a developer who loves to own the entire lifecycle of an application? We are looking for a Backend Engineer with a strong DevOps mindset to bridge the gap between code and infrastructure for our global Mobile Wallet Platform. Key Responsibilities: Backend development (Java EE) with a focus on automation and deployment . Configuring...

Expert knowledge of Java 21 (including JVM internals, memory management, Project Loom) and modern Spring ecosystem Solid experience with secure coding practices and building authentication/authorization flows using OAuth2/OpenID Connect Proven experience with Google Cloud Platform components (particularly GKE, Cloud Spanner, Cloud SQL) Strong practical...

Wymagane doświadczenie i kwalifikacje Doświadczenie w programowaniu w językach Java i/lub Kotlin (minimum 7 lat) Znajomość języków obcych: polskiego (C1), niemieckiego (B2/C1), angielskiego (B2) Znajomość i praktyczne doświadczenie ze Spring Framework Doświadczenie w projektowaniu i implementacji architektury mikroserwisów Doświadczenie w...

The10minutecareersolution is seeking a Senior Software Program Engineer to enhance their ERP solution for the wholesale distribution sector. This contract role expects a blend of backend and frontend work, with a strong emphasis on .NET and Node.js.The successful candidate will own the entire SDLC, collaborating closely with the technical founder. Key...

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,...

GitLab is seeking a Senior Backend Engineer for the Plan: Spec-Driven Development team, shaping agent-driven workflows and backend systems with Rails/Python. You will own early-stage backend work across flows, APIs, and data models, collaborating with design partners to deliver high-visibility features in a remote, async-first setting.In your first year, you...