905 backend developer English-speaking jobs in Warsaw

long‑term collaboration and business impact.Role OverviewWe are looking for an experienced Senior Web Developer ... Next.js with proven experience building integrated systems.Experience integrating web platforms with backend

the frontend using three.js or react‑three‑fiber in collaboration with product designers.Build the developer ... browser with three.js or react‑three‑fiber.Strong code review culture and ability to collaborate with backend

Full Stack Developer (React Native+Node.js)Andersen is hiring a Full Stack Developer (React Native+Node.js ... channels.ResponsibilitiesOwning product areas end‑to‑end across Inkitt, Galatea, and CandyJar — mobile, web, backend

Join the Incogni engineering team and help us build the next-generation backend system that powers our ... We’re looking for a senior backend engineer who thinks in systems, designs for growth, and is comfortable ... If you want to: Design, build, and evolve high-traffic, business-critical backend services with a focus ... And you can check off: Strong experience as a backend or software engineer building production systems ... Have experience building or scaling platforms that serve millions of requests; Worked with multiple backend

requirements-expected : Strong English communication (C1+) Experience building scalable, robust backend

Position Overview We are looking for a Full‑Stack TypeScript Developer to build the next generation of ... architecture design, and system scalability Designing and implementing high‑quality features across the backend ... expertise in TypeScript Proven experience building and maintaining production‑grade web applications Strong backend

Java Tech LeadWe are looking for a seasoned Java Developer with natural leadership qualities. ... OpenAPI/Swagger, and API‑First approach).Everyday proficiency with Git and Maven.Sound knowledge of backend

hybrid from Gdynia / Kraków / Warszawa / Rzeszów.ProjectWe are looking for an experienced Senior .Net Developer ... analytics, distributed event processing, and real‑time operational insights, you will work closely with backend

with strong engineering judgment.Platform Design and Development: Designing and developing a scalable backend ... significantly reduces the daily workload of clinical teams.We are looking for an independent Fullstack Developer ... actionsRequirements (Must-Have)Experience: Minimum 4 years of commercial experience in a similar Fullstack Developer

experience with Nest.JS Experience with Databases - MySQL is a Must Experience with building scalable backend ... Description We’re looking for a talented Full-Stack Node.js/TypeScript Developer to join our team and ... with other team members and stakeholders Requirements 4+ years of proven experience as a full-stack developer

BSc or MSc in software engineering or computer science 5+ years of proven track record as a strong backend ... Azure Azure DevOps Jira Snowflake Data Cloud about-project : Join FOSS Warsaw team as a C# Cloud Developer ... developer in C#/.NET environment Solid experience with client/server development or similar architectures

AI‑assisted developer tools (GitHub Copilot, Claude Code) to improve team productivity. ... Cloud certifications: AZ‑204 (Azure Developer), AZ‑305 (Azure Solutions Architect), or equivalent. ... Proactive learner: keeps up with backend and cloud‑native ecosystem developments; comfortable adopting ... of participating meaningfully in cross‑functional technical discussions spanning frontend, BFF, and backend ... Deep backend development experience: Java (Spring Boot) or equivalent, able to review, design and contribute

Drive architectural decisions and establish patterns that support scalability, reliability, and developer ... ABOUT THE ROLE We are looking for a Senior Backend Engineer to architect and build the core systems of ... MUST HAVES 5+ years of software development experience building scalable systems using backend programming

part of a software delivery workflow Experience in QSR, retail, or e‑commerce domains AWS Certified Developer ... ABOUT THE ROLE We are looking for a Senior Backend Engineer to design and build scalable middleware services ... lifecycle Implement secure authentication and identity flows using Amazon Cognito MUST HAVES 4+ years of backend

Are you tired of standard developer roles? ... StratsLab is an elite, developer-driven company where top-tier IT talent meets deep financial expertise ... it to customers' requirements and developing new functionalities & applications.Technical Focus: The backend ... complete freedom in using the software that makes you happy and productive ).Technologies we work withThe backend

with modern analytics and data‑pipeline tooling Experience building or maintaining publicly published developer ... write clean, concise, well‑tested code on critical paths — primarily in Python, with Go for selected backend ... experience 7+ years of production software engineering experience Hands‑on Go development experience for backend

What You’ll Actually Do Own the Backend: Design and ship high-performance services in Go and Java that ... The Toolkit: You are a pro in Go and/or Java and have experience shipping production-ready backend services

This is a high-ownership role for a strong mid-level backend engineer. ... We are looking for a Backend Engineer II to join our Technology Team and help build the future of education ... Strong experience with TypeScript/Node.js, Python or similar modern backend technologies. ... Improve reliability, observability, performance and maintainability across backend systems. ... What you will do Build and maintain backend services, APIs, webhooks and integration services.

About the role As a Senior Backend Engineer, you will play a crucial role in designing, developing, and ... Requirements 5+ years of experience in software engineering with a focus on backend, distributed systems

scaling moving from legacy patterns to modern architecture Strong background in platform engineering, developer ... The backend and frontend architecture becomes more modular, maintainable, and extensible. ... Deep expertise in Python backend development, with modern frameworks and best practices for scalable ... Lead system‑level design for backend services (Python), frontend architecture (Angular), APIs and integrations