18 of 18 Contract Open Source Jobs in the UK

OS Software Developer

Hiring Organisation
Guidant Global
Location
Gloucester, Gloucestershire, South West, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £600 per day
Software Developer - Open Source Specialist Location: Gloucestershire Contract Type: Contract About the Role Guidant Global is partnering with our client to recruit an experienced Software Engineer with strong open-source expertise . You'll join a small, highly skilled technical team delivering bespoke, open-source … code quality, and delivery standards Required Qualifications Bachelor's degree in Computer Science, Software Engineering, or equivalent experience Proven experience contributing to or managing open-source projects Experience & Technical Skills Essential Strong proficiency in Go, Python, or JavaScript Experience with Linux-based operating systems (RHEL, Rocky, Debian, Ubuntu ...

Fullstack Engineer (Backend)

Hiring Organisation
Randstad Technologies Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £550/day
Opportunity You will join a high-impact development squad building commercial offerings on top of the thriving open-source Backstage framework. You will design and build backend systems, APIs, and developer portals that elevate the developer experience across external commercial clients and internal engineering teams alike. Your Impact … streamline engineering workflows. Engineering Excellence: Elevate code quality through technical RFCs, code reviews, architectural feedback, unit testing, and full operational ownership of your services. Open Source Collaboration: Partner with product managers, designers, and the open-source community to shape the evolution of internal developer platforms. Your ...

Security Architect

Hiring Organisation
TXP
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650 per day
candidate will have come from a strong technical background, and have an understanding of attack vectors for high threat environments, across both proprietary and open-source technology stacks. You will advise and enable technical teams to make security decisions and provide advice and guidance, ensuring the effective … programmes, projects or a product-centric organisation. You will have a good understanding of a broad range of industry-standard technologies, both proprietary and open source, across a diverse range of Microsoft and Linux-based deployments, across physical, virtual and containerised compute. You will have experience in securing ...

Tech Lead - Software Engineering

Hiring Organisation
Chroma Recruitment Ltd
Location
Alderley Edge, Cheshire, North West, United Kingdom
Employment Type
Contract
Contract Rate
Competitive Day Rate, DOE
production scale Expert-level TypeScript, JavaScript and Node.js; experience building scalable, production-grade applications Strong GraphQL, REST API and PostgreSQL skills; Git-based source control and branching strategies Strong AWS experience: designing, securing, deploying and operating production cloud environments Docker, CI/CD pipelines, Infrastructure as Code (Terraform exposure … topics to non-technical stakeholders Comfortable explaining and owning AI-assisted code output, not just using it Desirable Experience with Vendure or a comparable open-source commerce platform (e.g. Magento) Experience with a modern React-based frontend framework, ideally Next.js Experience with Python, Redis, Payload CMS, Kubernetes ...

CyberSecurity OpenSource Data Platform Solution Architect

Hiring Organisation
Hays Technology
Location
Sheffield, South Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £550/day Up to £550 per day (Inside IR35)
define and maintain key architecture artefacts (HLDs/LLDs, reference architectures, patterns, and ADRs). They also drive technology evaluation and standardisation across an open-source, petabyte-scale data platform. They own solution designs for custom cybersecurity applications, from requirements through to production support. Partnering with engineering, platform … reference architectures, patterns, ADRs (Architecture Decision Records), and reusable templates. Contributing to the design and evolution of a petabyte-scale data platform built on open-source technologies. Evaluate technologies and drive standardisation: assess OSS components and vendors, run PoCs, document trade-offs, and promote reusable patterns to reduce ...

Intelligence Support Officer

Hiring Organisation
Red Snapper Recruitment Limited
Location
Burnley, Lancashire, United Kingdom
Employment Type
Contract
Contract Rate
£12.84 - £13.84/hour
public safety & enterprise security recruitment specialist. We assist public safety employers find the right talent. We assist all employers when they want to source public safety and enterprise security skills and experience. Intelligence Support Officer Location: Parker Lane, Burnley Contract: Full Time, 3-month initial contract with possible extensions … information to support tasking and resource decisions. Liaise with internal teams, other organisations and external agencies to support effective information sharing and communication. Undertake open-source and digital media research where required. Maintain accurate computerised records and intelligence systems. Carry out administrative duties to support the effective running ...

Site Reliability Engineer (SRE) / Platform Engineer

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Docker and multi-container application architecture experience. Experience working within scientific, pharmaceutical, genomics, or bioinformatics environments. Start-up or high-growth technology company experience. Open-source software contributions. Technical leadership, mentoring, or coaching experience. Contract Details: 6-Month Initial Contract Inside IR35 London-based Hybrid Working (2 days ...

Senior Java Developer

Hiring Organisation
Qualient Technology Solutions UK Limited
Location
Solihull, West Midlands (County), United Kingdom
Employment Type
Contract
Contract Rate
£400 - £425/day contract Outside IR35
Stash Repository • Experience of developing in a Linux development environment • Experience of working with a suite of Atlassian products • Experience of working with open-source database management systems like PostgreSQL • Experience of working with AWS services, EC2, SQS, RDS, DynamoDB, S3, Route53, KMS, Cloudwatch • Agile development methods – Scrum ...

Senior Linux Engineer

Hiring Organisation
Summer Browning Associates
Location
Glasgow, City of Glasgow, United Kingdom
Employment Type
Contract
Contract Rate
£0.00 - £1/day Competitive Inside IR35 Day Rate
VMware and Hyper-V. A solid understanding of common services, applications, and protocols, including HTTPS, SSH, DNS, NTP, and SSL. Experience with the open-source automation tool Ansible. Experience working in a cloud infrastructure environment, including AWS, Azure, or GCP. Proficiency in managing Ceph storage or Linux storage ...

Linux Engineer

Hiring Organisation
Henderson Scott
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Contract
Kubernetes. Advanced scripting skills in Bash and Python. Strong understanding of HTTPS, SSH, DNS, NTP, SSL and related services and protocols. Experience with open-source Ansible automation tooling and systems monitoring for infrastructure. Strong Linux troubleshooting capability up to 4th line level, with demonstrable Agile and DevOps experience ...

Senior Scala/JVM Software Developer

Hiring Organisation
scrumconnect ltd
Location
City, Newcastle Upon Tyne, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
digital services within UK central government or the wider public sector. Desirable experience Experience working with regulated public-sector, GDS, or financial-services environments. Open-source contributions to government engineering ecosystems. Active community-of-practice contribution (technical talks, blog posts, or internal Scala mentoring). Location and working ...

Senior Infrastructure Integration Engineer

Hiring Organisation
NP Group
Location
Glasgow, Lanarkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
Work across multiple infrastructure and automation codebases to remediate identified security vulnerabilities. Design, implement, and validate secure, stable, and maintainable code changes. Integrate vendor, open source, and internally developed solutions into enterprise infrastructure platforms. Develop and maintain automation using Python and related technologies. Build and improve Continuous Integration ...

Technical Infrastructure Architect

Hiring Organisation
Adecco
Location
South West, England, United Kingdom
Employment Type
Contractor
Contract Rate
£650 - £750 per day
controls Essential Knowledge: Expertise in technical architecture, infrastructure, networking, identity, and core services. In-depth understanding of modern technology practises, including hosting, platforms, and open-source technologies. Familiarity with agile and DevOps practises, encompassing continuous deployment, testing, and risk management. Essential Skills and Abilities: Translate business needs into ...

Threat Intelligence Analyst

Hiring Organisation
Cpl UK
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
evolving threat landscape to provide high-level situational awareness and proactive warnings about emerging threats. Monitor and analyse intelligence sources, including internal data, open-source reports, online databases and restricted intelligence sources, to identify actionable areas of interest. Conduct in-depth research and produce detailed reports on cybersecurity ...

Senior Infrastructure Integration Engineer

Hiring Organisation
Project Recruit
Location
Glasgow, Lanarkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
validation of complex infrastructure changes across distributed enterprise environments Key Responsibilities Design, develop, and implement secure, scalable, and maintainable infrastructure solutions. Integrate vendor, open-source, and internally developed technologies into enterprise infrastructure environments. Lead security vulnerability remediation across infrastructure and automation platforms. Develop and enhance automation frameworks using ...

RHEL Engineer

Hiring Organisation
Teksystems
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£300 - £500/day
automated testing. experience designing, implementing, and supporting large-scale Infrastructure-as-a-Service (IaaS) platforms. Knowledge of virtualisation, private cloud technologies, and container platforms. Open-source project contribution experience. Exposure to additional programming languages such as Perl, C, or C++. Why Work Here? This role offers the opportunity ...

Business Analyst

Hiring Organisation
Ncounter Limited
Location
SW11, Latchmere, Greater London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £650/day Outside IR35
evaluation • Strong stakeholder management across multidisciplinary teams Experience within the Home Office, National Security, policing or intelligence would be particularly relevant, while exposure to Open Source Intelligence, OSINT, would also be beneficial. We are looking for someone comfortable bringing structure to uncertain requirements, challenging assumptions and turning evidence ...

Platform Engineer - Opensource/ Kubernetes

Hiring Organisation
Square One Resources
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £580/day
Job Title: Platform Engineer - Redhat Openshift and Kubernetes Location: London or Manchester Rate: up to £580 a day Inside IR35 Start Date: Beginning of Aug Job Type: Contract 6 months - 2 days onsite (ideally on ...