3133 backend developer English-speaking jobs in Warsaw

Technologies is looking for aSolutions Architectto lead the technical vision and architectural design of our backend

us to apply for the Satellite Data Engineer role at CloudFerro S.A.This position involves building backend

10+ years of backend development experience, including 3+ years in a technical leadership role. ... services, data pipelines, and event-driven architectures., Contribute hands-on to backend development ... roadmap and architecture of a cloud-native, microservices-based platform., Lead system design across backend

/API testing, and CI/CD.ResponsibilitiesAutomated testing of backend and API-driven systemsWriting and ... years of experience who already has some exposure to automation and wants to develop further in BDD, backend ... JavaFamiliarity with BDD concepts (Cucumber / Gherkin)Experience or exposure to test automation (API, backend

Company is looking for a Senior Backend Engineer to help build the infrastructure that secures the world ... Responsibilities Design, build, and maintain scalable backend services and APIs Develop reliable, secure ... infrastructure Requirements Bachelor’s degree in Computer Science or a related field 5+ years of backend

We’re hiring a Senior Backend Engineer with strong hands‑on experience in both Java (Spring Boot) and ... Qualifications Experience 7+ years of professional backend development overall. 5+ years in Java ... Location: Poland remote Contract type: B2B (till end of 2026) Senior Backend Engineer – Java & TypeScript

OverviewJoin Us as Developer Specialist – Gresham Asset ControlWe are looking for an experienced Developer

Senior Flutter Developer (freelance) Miejsce pracy: Warszawa Technologies we use Expected Flutter Dart ... Operating system macOS About the project We're currently seeking a passionate freelance Senior Flutter Developer

Operational Excellence: Ensure the long-term stability and health of production systems while championing developer

Senior Software Engineer (Backend) will assist in all stages of the software development lifecycle, including design, implementation, testing, and production. Responsibilities include writing code, participating in design reviews, and managing project priorities. Requires 8 years of Python experience and 5 years of full-stack development experience.

On behalf of Torq, SD Solutions is looking for a talented Senior Backend Engineer.SD Solutions is a staffing

We are hiring a Senior Software Engineer (Backend) to join the Launchpad team and help shape the future

Senior Software Engineer will design, develop, test, and maintain software. Experience with Python, APIs (REST, protobuf), and Cloud computing (AWS) is required. Additional experience with frontend development, microservices, and serverless applications is desirable.

Commercial experience delivering backend systems in C#/.NET, including PostgreSQL and REST API Production ... and deliver RESTful APIs, Implement data ingestion pipelines and event-driven workflows, Integrate backend ... unified data from chemical manufacturing systems using AI/ML. ,[Design, build, and maintain PlantOps backend

Key Responsibilities Design, develop, and maintain complex backend financial systems, including trading ... Tech Stack Backend: Java, Kotlin, Spring Boot, JVM-based microservices Frontend: React, TypeScript ( ... occasionally) DevOps: Kubernetes, AWS, Terraform Data: PostgreSQL, Clickhouse Requirements Experience in backend

We are looking for a Senior Java Developer to manage the software development life cycle, from planning ... and prioritizing to testing and release.Senior Java Developer responsibilities include gathering system

Senior iOS Developer (freelance) Miejsce pracy: Warszawa Technologies we use Expected Jira Confluence ... Operating system macOS About the project We're currently seeking a passionate freelance Senior iOS Developer

integration strategies, including REST backend endpoints integration; Experience writing and maintaining ... Koin; Familiarity with translating high-fidelity designs into native code; Experience with mobile-backend ... ramp-up time; Experience working with AI tools (e.g., Claude Code); Nice To Haves Experience with Backend-for-Frontend

NICE TO HAVES Experience with Backend-for-Frontend (BFF) pattern; Previous experience migrating mobile ... integration strategies, including REST backend endpoints integration; Experience writing and maintaining ... or Koin; Familiarity with translating high-fidelity designs into native code; Experience with mobile-backend

Strong understanding of API design, backend architecture, and cloud environments. ... This role is backend‑oriented but requires strong full‑stack ownership, helping us design, develop, and ... features – from concept to deployment – combining React Native on the client side with a .NET‑based backend