15 of 15 Contract Open Source Jobs

Front End Developer (Angular)

Hiring Organisation
FDM Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£45,000 per annum, Negotiable, Pro-rata, Inc benefits
HTML5, CSS3, CSS Grid, and Flexbox. Work with AstroUXDS and UX designs to deliver high-quality user interfaces. Integrate and maintain third-party and open-source npm packages within Angular applications (for example data-visualisation or mapping libraries). Contribute to automated testing using Playwright and Cucumber. Collaborate … CSS3, CSS Grid, and Flexbox for responsive UI development. Experience using Node.js and npm for build processes and dependency management. Experience integrating and maintaining open-source npm libraries within web applications (for example charting, mapping, or visualisation libraries). Familiarity with automated testing tools such as Playwright ...

Product Security Engineer

Hiring Organisation
Real
Location
Limerick, Limerick County, Republic of Ireland
Employment Type
Contract
Contract Rate
£60.43 - £77.69/hour Expenses can be factored
assessment, impact assessment and risk review. Work with SAST, DAST, SCA, vulnerability scanning and dependency analysis tools. Support SBOM review, software composition analysis and open-source governance. Contribute to product security documentation within a regulated quality environment. Collaborate with software, systems, quality, regulatory and cybersecurity teams. Required experience … design and secure software development principles. Hands-on experience with SAST, DAST and SCA/software composition analysis. Experience with SBOMs, dependency analysis, open-source governance or software supply chain security. Experience assessing vulnerabilities, exploitability, risk, impact and remediation options in application or product environments. Strong cyber fundamentals ...

Cloud Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
United Kingdom
Employment Type
Contract
Contract Rate
Up to £85 per hour
/ML security challenges and AI-driven security tooling Experience with Kafka, Pulsar, Splunk, or real-time streaming systems Golang expertise Experience contributing to open-source projects or internal developer platforms Knowledge of Microsoft Copilot ecosystem or AI agent frameworks Experience building highly scalable cloud-native services ...

OSS/BSS Solution architect

Hiring Organisation
IBU CONSULTING LTD
Location
London, United Kingdom
Employment Type
Contract
distributed systems, transaction management and telemetry pipelines - Understands how state is managed across multiple systems, how rollbacks occur, compensation patterns, fallback handling TMF Open API - Customisation and extension of schemas (extension knowledge is critical) - Understands their role in inter-component integration, how to change schemas, sync and async patterns … Deep understanding of TMF SID (Product/Service domains) and TMF Open APIs used across BSS/OSS HIGHLY DESIRABLE Cloud Services & Observability - Experience designing for multi-cloud, hybrid and on-prem environments - Skilled in cloud-native patterns (PaaS, SaaS, serverless, containers, orchestration) - Cloud platforms (AWS or GCP): commonly ...

AI Native Software Engineer

Hiring Organisation
Skilliantech Ltd
Location
London, United Kingdom
Employment Type
Contract
accuracy, latency, and reliability Implement observability and monitoring for agent lifecycle AI Platform Integration Integrate with AI providers (e.g., OpenAI, Anthropic, Google Vertex, open-source models) Build abstraction layers to support multi-model and multi-provider architectures Optimize model usage for performance, cost, and latency Cloud-Native Development ...

Senior AWS Data Engineer - SC Cleared

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£425 - £450 per day
robust data pipelines for ingestion, processing, and transformation Implement and maintain ETL/ELT workflows feeding data warehouses, data lakes, or lakehouse platforms Leverage open-source and AWS-native tools to deliver scalable data solutions Apply DevOps practices , including CI/CD and automation Ensure solutions align with … solutions Experience working in Agile (Scrum) delivery environments Strong communication and stakeholder-management skills Proactive, collaborative, and delivery-focused mindset Desirable Skills Knowledge of open table formats (Iceberg, Delta) Experience with additional AWS services (CloudWatch, SNS, Athena, DynamoDB, EMR, Kinesis) Data modelling Job scheduling and orchestration tools Data virtualisation ...

Software Engineer (Full Stack)

Hiring Organisation
Certes IT Service Solutions
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£650 - £675 per day + Negotiable
GOV.UK. Practical experience deploying and operating services on a major cloud platform (GCP preferred), and testing experience too. Desirable Skills include: Experience contributing to open-source projects or working to GDS service standards. Some Python, or experience with applications that integrate LLMs. You will be comfortable working alongside … system clearly - architecture, decisions, and day-to-day operations - so internal and external contributors can pick the work up quickly Working in the open: reviewing pull requests, triaging issues, and engaging thoughtfully with the project's wider team. The key essential areas for this role include: 1)Five years ...

Forward Deployed Engineers

Hiring Organisation
Randstad Digital
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £500 per day + Inside IR35
accuracy, latency, and reliability Implement observability and monitoring for agent lifecycle AI Platform Integration Integrate with AI providers (e.g., OpenAI, Anthropic, Google Vertex, open-source models) Build abstraction layers to support multi-model and multi-provider architectures Optimize model usage for performance, cost, and latency Cloud-Native Development ...

AWS Technical Architect

Hiring Organisation
Opus Recruitment Solutions
Location
South Bank, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 600 Daily
solid understanding of public sector governance and assurance processes. Strong technical architecture background - experience designing secure, scalable systems using modern technologies (cloud, open source, and languages like Java, Python, JavaScript or Ruby). Leadership & communication skills - able to guide teams, influence stakeholders, and clearly communicate with both technical ...

AWS Technical Architect

Hiring Organisation
Opus Recruitment Solutions
Location
Remote work, South Bank, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£0 - £600/day
solid understanding of public sector governance and assurance processes. Strong technical architecture background - experience designing secure, scalable systems using modern technologies (cloud, open source, and languages like Java, Python, JavaScript or Ruby). Leadership & communication skills - able to guide teams, influence stakeholders, and clearly communicate with both technical ...

Infrastructure Engineer

Hiring Organisation
Harvey Nash
Location
Edinburgh, Midlothian, Scotland, United Kingdom
Employment Type
Contract
services. - Design, Build, Configure, Implement, Administer and Support infrastructure solutions and services, for example, networking and physical infrastructure, commercial-off-the-shelf (COTS) software, open-source packages and solutions, or virtual and cloud computing. - Use information security practices and available security controls to contribute to protecting solutions ...

Test Engineer

Hiring Organisation
Stealth IT Consulting Limited
Location
United Kingdom
Employment Type
Contract
Contract Rate
£458 per day inside IR35
support confident release decisions. Tech stack o Expertise in test automation using JavaScript based test frameworks such as WebdriverIO, Playwright or Cypress o Open-source JS based libraries or frameworks for API testing, or Postman. o Jmeter or K6 for load and performance testing o Continuous integration pipelines … four developers, a lead tester and this QA post. The specific skills required are below: JavaScript and Webdriver IO test framework Gitlab & Github source control Postman and Newman Cli for API testing CI pipeline - Jenkins Using reporting tools for automation tests Accessibility testing to GDS standards Compatibility testing using ...

Android Engineer - Mobile Applications

Hiring Organisation
Korn Ferry
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 500 Annual
within agile engineering teams Nice to Have Jetpack Compose experience Dependency Injection frameworks (eg, Dagger/Hilt) Experience supporting Legacy Android codebases Exposure to open-source projects or contributions Experience working within globally distributed teams ...

Interim Group Finance Manager | SaaS Scale-Up

Hiring Organisation
Harmonic Group Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 - £450 per day
They have a team of bright, passionate people with experience in leading Tech and SaaS scale-ups who are motivated to build the next open-source success story. The Role The Finance Manager will support the CFO closely, with a focus on month end close and group consolidated ...

SOC Manager

Hiring Organisation
Circle Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £850 per day
intelligence and assessment in the context of the organisation to stakeholders by gathering and analysing information to identify and mitigate cyber threats from both open-source (OSINT) and commercial threat intelligence. Proven experience operating cyber security solutions and tools e.g. Security Information and Event Management ( SIEM ), maintaining security ...