165 freelance English-speaking jobs in Masovian Voivodeship

Freelance statisticians with Python expertise are sought to design, evaluate, and improve AI systems for leading tech companies. Projects are part-time and non-permanent.

Experienced Elixir developer needed for a US-based technology company. Analyze, refactor, and improve existing Elixir codebase using Phoenix framework and OTP principles. Collaborate with the client to implement changes and identify system improvements.

Position AI Engineer - Freelance at PwC Polska 1 week ago Be among the first 25 applicants Get AI-powered

About the role This is a freelance role, which means that you’ll have freedom of setting your schedule ... Practical info: Contract: B2B / freelance Rate: 90 - 150 PLN net / hour (depending on your experience

JUnitMockitoRobolectricGoogle PlayAndroid AutoFlutterabout-project :We’re currently seeking a passionate freelance

Experienced Automation QA Engineer needed for manual and automated testing of integrations, UI, and UX features. Design, maintain test cases, and execute end-to-end automated tests. Collaborate with developers and product teams to ensure product quality.

We’re currently seeking a passionate freelance Senior Flutter Developer to join our forthcoming projects

Freelance AI trainer for automotive engineering projects. Design, evaluate, and improve AI solutions using Python. Requires 3+ years of automotive engineering experience and strong Python proficiency.

We’re currently seeking a passionate freelance Senior Android Developer to join our forthcoming projects

For our client – agency at EC we are looking forSenior Software Developer – SharePoint Freelance Opportunity

This is a freelance position, starting no earlier than May 2026, available on-site in Warsaw or remotely

Exciting extra projects and freelance opportunities – expand your skills and experience!

Automotive engineers with Python experience are sought for freelance AI training projects. Tasks include designing automotive engineering problems, evaluating AI solutions, validating results using Python, and improving AI reasoning.

Overview Join to apply for the DevOps in Digital& team (freelance) role at PwC Polska.

technologies-expected :FlutterDartiOSAndroidJiraConfluenceabout-project :We’re currently seeking a passionate freelance

We're building a curated network of talented freelance UI Designers that we can call upon for existing

We’re currently seeking a passionate freelance Senior QA Engineer to join our forthcoming projects.

We're building a curated network of talented freelance UX Designers that we can call upon for existing

TestRailAtlassianQasetechnologies-optional :PostmanCharlesProxymanabout-project :We’re currently seeking a passionate freelance

Freelance AI trainer for electrical engineers with Python experience. Design electrical engineering problems, evaluate AI solutions, and validate calculations using Python. Must have 3+ years of experience and strong written English.