backend engineer nodejs

Cornerstone seeks a Software Engineer to join a hybrid Krakow team building cloud-based applications on the .NET stack. You will own features from design to production support, mainly in C#/.NET, with AWS and SQL Server, and contribute to frontend with React or Angular.The role emphasizes designing robust backend APIs, optimizing queries, and integrating...

Allegro in Poznań is seeking a Junior Software Engineer (Backend / Mobile) to help shape Listings and Filters in our mobile apps. You will work across Kotlin, Spring Boot 4, and Spring GraphQL on the backend while gaining hands-on mobile experience on Android and iOS.You’ll join a team migrating core services to Kotlin and JVM and directly impact millions...

DSV Air & Sea SAU seeks a senior backend engineer to develop and maintain enterprise services in the Digital Document Management domain. You will work with product owners, architects, and QA to deliver features, system integrations, and operational improvements while upholding high engineering standards.You will contribute to CI/CD, observability, and...

Allegro Ads in Warsaw seeks a Software Engineer 1 (Java/Kotlin) to help power a massive real-time marketplace. You will own backend services from design to deployment, building robust systems that scale with demand.You will work with Kotlin, Spring Boot, Kafka, and Kubernetes in a cloud-native environment and collaborate with ML teams to advance end-to-end...

5 years backend engineering with strong, recent TypeScript in production; Nest.js or a comparable DI-based Node framework Experience building integration services or API gateways : webhooks, signature-based auth, retries, idempotency, circuit breakers, third-party API adapters PostgreSQL and relational data modelling; comfortable designing schemas and...

Experience: Minimum 5 years of commercial experience in backend development (Java and/or Kotlin). Microservices: Deep practical knowledge of microservice architecture. Messaging: Experience working with messaging systems (e.g., Kafka ). Frameworks: Strong knowledge of the Spring ecosystem and JPA. Databases: Proficiency with relational databases...

About the role The Contact 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...

The Codest - International Tech Software Company, with tech hubs in Poland, is delivering global IT solutions and scaling teams. Developers on this project operate across full stack, shifting between backend and frontend tasks as needed.The role focuses on Java (Kotlin) backend, React frontend, REST APIs, and microservices. English at B2+ is required;...

Reply Group is looking for a Senior Backend Developer in Katowice, Poland. You will lead backend development for a cloud-native microservices platform and manage AWS infrastructure. Ideal candidates have 4+ years in software development and experience with AWS and microservices.Benefits include medical care, training opportunities, and a flexible benefits...

Intellias is partnering with a Fortune 100 Midwest-based industrial manufacturer to modernize cloud services and data products powering a global network of dealers, enterprise customers, and internal business units.You will design, develop, and maintain scalable Java 21, Spring Boot 3.x microservices, and build event-driven data pipelines on AWS, Snowflake,...

LeoVegas Group is seeking an experienced Senior Backend Engineer to join the Retention domain. You will build scalable backend solutions in a microservice architecture, work with Java/Kotlin, Kafka, and Spring/JPA, and collaborate with multiple teams to enhance player engagement across channels.The role offers a hybrid work model in a fast-paced iGaming...

Allegro is seeking a Software Engineer to design and develop backend systems with a focus on Kotlin and scalable architecture. You will join a cross-functional team that includes backend, frontend, and mobile, and collaborate with ML experts to build real-time discount personalization tools.You should be eager to expand into TypeScript and React while...

Scalosoft zaprasza do współpracy specjalistę backendowego z doświadczeniem w C# i .NET 8. Do obowiązków należa projektowanie i implementacja rozwiązań, utrzymanie komponentów, oraz integracje między systemami z użyciem SQL i Kafka.Praca hybrydowa, obecność w biurze w Warszawie lub Łodzi 2–3 razy w miesiącu, budżet projektu do 130 PLN/h +...

Tickmill is seeking a Backend Developer (.NET) in Poland to design, develop, and support backend services. The ideal candidate will have 3+ years of experience in C# and strong object-oriented programming skills. Join a rapidly growing team that values transparency, trust, and diversity while offering an attractive remuneration package and professional...

Talanto poszukuje doświadczonego developera do zadań od zera, tworzącego nowy produkt dla sektora ochrony infrastruktury krytycznej. Będziesz projektować backend w FastAPI, konteneryzować aplikacje Dockerem i współtworzyć warstwę frontendową w Vue 3 + TypeScript, z możliwością pracy w React/Angular.Wymagamy co najmniej 4–5 lat doświadczenia,...

Globaldev is seeking a Senior Backend Engineer (Go) to design, develop, and optimize high-performance services in a heavy-load DSP platform. You will be responsible for scalable, low-latency backend services and work closely with cross-functional teams to deliver robust software.You will collaborate with Data Eng and ML teams to drive data-driven...

vCluster Labs, a venture-backed startup, seeks a Staff Software Engineer (Backend) to shape the future of Kubernetes multi-tenancy. You will help architect the vCluster Platform and work with Kubernetes internals to build tools used by world-class engineering teams.The role emphasizes Go development, end-to-end ownership, and open-source collaboration,...

DCG Poland poszukuje senior backend Java Developera w Warszawie do projektowania, implementacji i utrzymania backendu dla platform bankowych. Wymagana jest silna znajomość Javy 21+, REST API, mikrousług, Spring Boot 3.4, Hibernate oraz dobre umiejętności w testowaniu i narzędziach CI/CD.Praca w zespole Agile, z fokusim na wysoką jakość,...

Tieto Deutschland GmbH is hiring a Software Engineer to join a patient engagement development team. You will work on analysis, design, development, testing, and release tasks in a hybrid setup, contributing primarily to backend services and REST/SOAP APIs.We value 3+ years of professional experience, strong .NET and SQL skills, and an ownership mindset. The...

Diagnostyka Digital Hub w Krakowie poszukuje doświadczonego programisty backendu, specjalizującego się w NodeJS (TypeScript, NestJS) i chmurze Google Cloud. Praca nad mobilną aplikacją Diagnostyka i usługami medycznymi.Wymagane minimum 3-letnie doświadczenie, znajomość REST API, relacyjnych baz danych (MySQL), Docker, CI/CD oraz Git. Praca hybrydowa...