1596 backend developer English-speaking jobs in Warsaw
Senior Full-Stack Developer – React & Python Expertise
- ITDS
- Warszawa
- May 6
Integrate real-time data capabilities with Supabase for seamless serverless backend interactions. ... As a Senior Full-Stack Developer – React & Python Expertise , you will be working for our client, a leading ... You're ideal for this role if you have: 5 years of experience as a Full-Stack Developer with a focus ... Solid Python backend experience, including CLI development, API creation, async programming, and structured
Senior Software Engineer Devops - Developer Experience
- Revolut
- Warszawa
- May 6
From building a new financial backend to creating an innovative app, there’s nothing they can’t do. ... We’re looking for a DevOps Engineer to join our Developer Experience (DevEx) team and streamline processes ... developer Experience with cloud providers, such as GCP and AWS Experience with Linux and Docker Experience ... processes and continuous checks What you'll need Hands-on software engineering skills and experience as a backend
Lead Software Engineer - AI Engineering Lab
- RTB House
- Warszawa
- April 24
Collaboration within an interdisciplinary, self-sufficient team including: DevOps (ensuring a great Developer ... You Will
Lead, mentor, and grow a team of talented Frontend/Full Stack and Backend engineers, fostering ... Experience), database experts, backend developers, product designers, and QA engineers;
Hardware and ... stakeholders from Ads layouts creation teams (designers, graphic specialists), and the core Bidding Platform backend
Senior React Fullstack Developer
- Jit Team
- Warszawa
- May 10
As a developer, you will work on both backend and frontend development, taking responsibility not only ... Responsibilities you'll have Developing backend and frontend features within a greenfield application ... experience Practical knowledge of Java and Spring Boot Motivation and readiness to further develop Java and backend
Java Developer - 2 days onsite in Warsaw - Poland
- Strategicsiq
- Warszawa
- May 6
If you enjoy building scalable backend systems and like collaborating face-to-face a couple of days a ... Responsibilities Design, develop, and maintain Java-based microservices Build scalable, high-performance backend
Senior Golang Developer - Freelance
- Netguru
- Warszawa
- May 6
We are currently seeking a talented Senior Golang Developer. ... Solid experience building backend systems and APIs in a production environment. ... B2B Contract Salary rate up to 34 EUR/h Fully remote position Start ASAP Develop and maintain backend ... We are also open to candidates with a Fullstack profile, particularly those who bring solid backend expertise
Senior Frontend Developer
- Jit Team
- Warszawa
- April 24
Core Web Vitals, and ensure smooth experiences across devices and browsers Collaborate closely with backend
Backend Engineer
- Point Wild
- Warszawa
- May 18
security tools, vulnerability detection platforms, or compliance automation Prior experience working on developer-facing ... Backend Engineer Poland, Remote or Ukraine, Remote or Romania, Remote Point Wild helps customers monitor ... About the Role: We’re looking for a Backend Engineer to contribute to a next-generation security initiative ... error handling What you bring to the table: 3 years of hands-on software engineering experience for backend
Java Tech Lead
- CSHARK
- Warszawa
- May 6
We are looking for a Backend Tech Lead to join a strategic rewrite of a core platform module. ... The role combines technical leadership with hands-on backend development , helping redesign a legacy ... The Essentials We're Seeking 7 years of experience in backend or fullstack software development. ... Strong expertise in Java and Spring Boot , including designing modular backend services and REST APIs ... 170 - 190 PLN/h VAT ☑️ B2B contract Your Daily Missions Lead the design and development of backend services
NET Developer – 2nd Line Support On-call Standby
- Miquido
- Warszawa
- May 6
Part-time Location: Remote Cooperation Model: Flexible (standby / on-call duties) We are looking for a .NET Developer ... applications Bug fixing in existing codebases Working with REST APIs Collaboration with other developers (backend ... weekend day (24h)➕ Hourly rate for actual work performed Requirements Min. 5 years of experience in .NET backend
Senior Load Tester
- Winged IT
- Warsaw
- May 6
know exactly where to focus; -> Clear communicator — you can explain a complex performance issue to a developer ... and pinpoint exactly where and why performance degrades — not just that it does; -> Work closely with backend ... k6, Gatling, JMeter, or Locust — you've built complex scripts from scratch; -> Good understanding of backend
Senior Full-Stack Engineer PHP React
- DevsData LLC
- Warszawa
- May 6
B2B or CoE Hybrid: 3 days office / 2 days home in Warsaw We’re looking for a Senior Full-Stack PHP Developer ... React (Redux) Strong understanding of the full application lifecycle Experience with PostgreSQL and backend ... Responsibilities Develop and maintain scalable full-stack applications using PHP and React Build and integrate backend
Internship - Fullstack Software Engineer (Java & JavaScript)
- Webellian Sp.z o o
- Warsaw
- May 6
Senior Python Developer Docker
- Montrose Software
- Warszawa
- May 6
Finance Location : Kraków / Hybrid/ Remote from Poland Your daily work will include: Develop and maintain backend
Backend Engineer
- Tradevest Technologies Warsaw SP. Z O. O.
- Warszawa
- May 6
What you'll do - Develop and maintain backend services powering regulated financial products - Work across
Senior Frontend Developer
- DCG
- Warszawa
- May 22
of recruitment projects we undertake for our partners, we are currently looking for: Senior Frontend Developer ... Analyze and optimize application performance, including load times and Core Web Vitals Collaborate with backend
Product Owner
- Avenga
- Warszawa
- May 6
customer experience • Expertise in API product management, including API design, documentation, and backend ... • Driving an API-first approach, focusing on standards-compliant design and documentation to ensure developer ... the product lifecycle • A strong focus on understanding and delivering value to build a best-in-class developer
Senior SharePoint Developer - Open for EU candidates
- All European Careers
- warszawa
- May 17
For an European institution in Warsaw, we are looking for a Senior SharePoint Developer. ... Tasks and responsibilities:
Application development, integration and deployment for both backend systems
Senior Backend Engineer (Growth)
- NTIATIVE sp. z o.o.
- Warsaw
- May 23
Blockchain Payments Integration - Backend Engineer TypeScript
- gmi.software
- Warszawa
- May 6
Backend Engineer (TypeScript) We're building a high-performance financial ledger connecting fiat payment ... We're looking for a backend engineer to work on integrations that bridge traditional banking (ACH, WIRE













































