freelance linux jobs in London

Senior KDB+/q Engineer (DRWN)Job title - Senior KDB+/q EngineerClient Location - London, United Kingdom (City or Canary Wharf)Remote work offering - Partially remote (2 to 3 days onsite a week)Client Industry - Capital Markets / Investment Banking / Hedge FundsContract Length - 6 months (extension likely)Contract type - Freelance (Outside IR35)Project...

We have officially expanded into the UK, and we are looking to hire engineers to join the team. We’re really lucky to have an Engineering team spread across three jurisdictions working on the Hnry product. While that gives us the opportunity to hire great people globally, we’re looking for a Platform Engineer to join our founding London team. You will...

We have officially expanded into the UK, and we are looking to hire engineers to join the team. We’re really lucky to have an Engineering team spread across three jurisdictions working on the Hnry product. While that gives us the opportunity to hire great people globally, we’re looking for a Platform Engineer to join our founding London team. You will...

Job-ID: 8899Category: Information TechnologyLocation: Poland; United Kingdom; BelgiumSchedule: Level 6Posted: 2026-10-28Division: Group Technology Services (GTS)The Group Technology Services (GTS) plans, builds and runs the global infrastructure of Euroclear, and is additionally responsible for the IT service management to the operating entities of the...

CyberArk Secret Manager Engineer | Freelance | London /Paris / Brussels / Hybrid (8 days/month onsite) Duration: 12 months Rate: Flexible Inside of IR35We're looking for an experienced CyberArk Engineer to join Euroclear's Chief Information Security Office (CISO) within the Identity and Access Management (IDAM) team. This is a fantastic opportunity to play a...

AI Penetration Tester (AI Security) About The Role What if your penetration testing skills could directly shape how safe and secure AI systems are for millions of users worldwide? We're looking for experienced AI Penetration Testers to probe, attack, and stress-test AI-powered applications and infrastructure — finding and documenting vulnerabilities...

Job-ID: 8899Category: Information TechnologyLocation: Poland; United Kingdom; BelgiumSchedule: Level 6Posted: 2026-10-28Division: Group Technology Services (GTS)The Group Technology Services (GTS) plans, builds and runs the global infrastructure of Euroclear, and is additionally responsible for the IT service management to the operating entities of the...

Senior KDB+/q Engineer (DRWN)Job title - Senior KDB+/q EngineerClient Location - London, United Kingdom (City or Canary Wharf)Remote work offering - Partially remote (2 to 3 days onsite a week)Client Industry - Capital Markets / Investment Banking / Hedge FundsContract Length - 6 months (extension likely)Contract type - Freelance (Outside IR35)Project...

Grand Visual is seeking a talented freelance Technician to join our London team on an ad-hoc project basis, supporting the delivery of interactive Digital Out of Home (DOOH) projects. This role sits within our Creative Technology department, to ensure the successful delivery of interactive experiences. The role sits outside IR35. Responsibilities Develop...

Clariter group is looking for a UAT Testerfor an important client. Responsibilities: Review and analyze system requirements. Create test scripts for manual execution. Execute test scripts, review results, and communicate findings. o UAT manual testing for web and app - new functionality, bug fixes, and version updates. Skills: Jira Testing...

Clariter group is looking for a UAT Tester for an important client.ResponsibilitiesReview and analyze system requirements.Create test scripts for manual execution.Execute test scripts, review results, and communicate findings. o UAT manual testing for web and app - new functionality, bug fixes, and version updates.SkillsJiraTesting methodologiesDatabase...

We have officially expanded into the UK, and we are looking to hire engineers to join the team. We’re really lucky to have an Engineering team spread across three jurisdictions working on the Hnry product. While that gives us the opportunity to hire great people globally, we’re looking for a Platform Engineer to join our founding London team. You will...

We have officially expanded into the UK, and we are looking to hire engineers to join the team. We’re really lucky to have an Engineering team spread across three jurisdictions working on the Hnry product. While that gives us the opportunity to hire great people globally, we’re looking for a Platform Engineer to join our founding London team. You will...

CyberArk Secret Manager Engineer | Freelance | London /Paris / Brussels / Hybrid (8 days/month onsite) Duration: 12 months Rate: Flexible Inside of IR35We're looking for an experienced CyberArk Engineer to join Euroclear's Chief Information Security Office (CISO) within the Identity and Access Management (IDAM) team. This is a fantastic opportunity to play a...

We are looking for a highly skilled and detail-oriented C++ Developer to join our software engineering team. You will be responsible for developing high-performance applications and systems, ensuring efficiency, reliability, and scalability. Freelancer Prox is the first platform to provide a fully cost-free experience for both recruiters and job seekers....

Clariter group is looking for a UAT Tester for an important client. Responsibilities: Review and analyze system requirements.Create test scripts for manual execution.Execute test scripts, review results, and communicate findings. o UAT manual testing for web and app - new functionality, bug fixes, and version updates. Skills: JiraTesting...