749 backend developer English-speaking jobs in Masovian Voivodeship

At least 4-5 years of experience as Software Developer.

Senior/Expert React Developer will contribute to the development of an automated exam management platform. Responsibilities include front-end development, design, code review, and continuous improvement of the codebase. Requires 5+ years of experience with HTML, JavaScript, CSS, React.js, Redux, and Typescript.

platform Contribution to specifications for solutions based on or integrated with Exchange Liaising with developer

audiences.Prioritizing and communicating partner and stakeholder requirements to Product and Engineering – covering backend

inPython for data processing (must have expertise inPandas, Polars, and openpyxl).Experience building backend

Key responsibilities include: Designing and building robust, scalable backend services using Java, Spring

$3,000.00 2 days agoWarsaw, Mazowieckie, Poland PLN10,000.00-PLN16,000.00 1 year ago(Junior) Back-end Developer ... PolandWarsaw, Mazowieckie, Poland 10 months agoWarsaw, Mazowieckie, Poland 11 months agoSenior Full Stack Developer

Supporting the requirements → configuration → acceptance flow where feasible without developer involvement

adoption Proven experience building full-stack features across mobile or web applications (frontend + backend

configuration, usage standards, governance, and scaling Ideal candidate profile 5–8 years of experience as Developer

semantic layer design, project architecture, and governance Python scripting for automation, testing, and developer

collaboration, and continuous learning, Project Delivery: Plan, prioritise, and oversee execution of backend ... We can grow together faster if you have   Proven leadership experience in managing backend or cross-functional

observability tooling (metrics, logs, tracing, alerting) Help automate build and deployment processes for backend

(near-code or monorepo approach) Background in cross-functional teams with close collaboration with Backend

We are seeking a high-seniority Java Developer for our Warsaw-based hub who can be co-located, and brings ... As a Senior Java Developer, you will build and evolve the microservices that power these clinical workflows

Develop and enhance application components within a SCRUM team, focusing on Oracle DB performance. Analyze, optimize, and monitor solutions, supporting other teams and deployments.

Develop KPIs, build data flows, and support business users. Requires 3+ years experience with BI tools (Qlik Sense, Talend, Snowflake) and strong communication skills.

Senior Ruby on Rails Developer needed to build and scale high-performance backends and APIs. Expert-level Ruby on Rails skills, database proficiency (SQL, NoSQL), and cloud/infrastructure experience (AWS/GCP/Heroku, Terraform) required. Strong DevOps skills (Docker, GitHub Actions, CI/CD) and commitment to TDD (RSpec) are essential. Fluent English communication skills are necessary for team collaboration.

How You’ll Spend Your Day Build and maintain scalable backend systems using .NET, C#, ASP.NET, Web API

Backend development experience in Java or Go.