20 backend developer English-speaking jobs in Kielce

Senior / Staff Backend Engineer (Java, Kafka Streams, AWS) Location: Kraków, hybrid Contract: B2B or ... PLN/h VAT Work model: around 3 days per week from the office We are looking for a Senior or Staff Backend ... What you will do Build and evolve backend services using Java and Spring Boot Design and maintain real-time ... and engineering stakeholders across an international environment What we are looking for 7 years of backend

Visualising model statistics and system load on top of a backend that actually does the deployment. ... You will work with tooling engineers, and you will be part of an organisation specialized in developer ... configurations Experience with IDE development, especially around JetBrains IDEs Hands-on experience with developer

Job Description Tech Stack: Backend: Python 3.13, FastAPI, Flask, SQLAlchemy, Pydantic, Celery Frontend

Contribute to replatforming and refactoring of existing systems, Work end‑to‑end on new applications (backend ... Your impact: As a Senior Full Stack .NET Developer, you will be responsible for designing, developing ... Your impact: As a Senior Full Stack .NET Developer, you will be responsible for designing, developing

What you will do: Design and evolve scalable backend services and APIs Write and review production-grade

Backend Proficiency: Solid hands-on experience in Kotlin with Spring Boot, REST APIs, and microservices ... Build high-performance backend microservices in Kotlin and Spring Boot to power real-time dashboards,

Your main goal will be to take ownership of essential developer tools and services including Jenkins, ... Project scope We are working with the core developer tooling team responsible for 30k developers in one ... Hands-on experience in managing and optimising on-premise developer tools (such as Jenkins, Bitbucket

Strong hands-on coding skills in modern backend languages suited for integration and AI work to write ... Engineering, or equivalent practical experience, backed by a strong track record (ideally 4 years) in backend

You will work with tooling engineers, and you will be part of an organisation specialized in developer ... configurations Experience with IDE development, especially around JetBrains IDEs Hands‑on experience with developer

About the role This engagement is focused on architecting and delivering the developer experience and ... This engagement is focused on Software Developer Kit libraries and API definitions around a wallet application

For our client, an international leader in the heating industry, we are looking for an experienced developer

includes end-to-end implementation (device → cloud → application), integration of IoT components with backend

Build GenAI systems using Python, focusing on agentic/RAG pipelines. Own the AI lifecycle, from ideation to evaluation. Requires 5 years of Python experience, 3 in GenAI/LLM engineering, and strong client-facing skills.

Kerberos (development, low level knowledge) MS-WCCE protocol experience Nice to have: Experience as a .NET Developer

Senior Golang Developer role requiring 10+ years of experience and 5+ years of daily Golang coding. Responsibilities include implementing solutions, testing code, and participating in code reviews for innovative projects.

other developers.Experience with working with external teams and processes.Experience with extending developer

Java Developer joining a global team to migrate an in-house electronic trading application to GCP. Responsibilities include developing new features, collaborating with product owners, automating testing, and ensuring production availability. Requires 4+ years of Java development experience, GCP and Terraform exposure, and expertise in TDD, CI/CD, and Apache Kafka. Fluent English required.

scope Provide first-class technical support for all IntelliJ Platform-based IDEs and their agentic developer

developing Kubernetes operators, operating complex distributed systems in production, and building a developer

Contribute to automated testing, smoke testing, integration testing, and performance validation, Support backend