1 to 25 of 26 Contract Open Source Jobs

Oracle DBA

Hiring Organisation
Sanderson Government and Defence
Location
Warwickshire, West Midlands, United Kingdom
Employment Type
Contract
/SQL. Manage backup and recovery strategies using RMAN. Support and maintain Oracle WebLogic environments. Develop and maintain reporting solutions using OBIEE. Work with open-source platforms such as Liferay and Oracle development frameworks including ADF and APEX. Required Skills & Experience In-depth knowledge of Oracle Database Architecture … Business Suite R12 setup and administration. Proficiency in SQL*Plus, PL/SQL, and scripting for automation. Experience with Oracle WebLogic, OBIEE, and open-source tools like Liferay. Familiarity with Oracle ADF and APEX development frameworks. Reasonable Adjustments: Respect and equality are core values to us. ...

Technical Lead

Hiring Organisation
Brightbox GRP Ltd
Location
United Kingdom
Employment Type
Contract
Contract Rate
£450 - £600 per day
projects, maintaining information and analysis used to justify decisions. - Experience in building and maintaining infrastructure-as-code and CI/CD pipelines. - Awareness of open-source AI/ML models and their utilisation in cloud-based solutions. - Knowledge of creating robotic process automation solutions, such as UiPath ...

software engineer

Hiring Organisation
Natural Resourcing Ltd
Location
Central London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £700 per day
skills in web front end technologies such as HTML, CSS, Bootstrap Golang Spring Boot Docker Kubernetes Atlassian Build tools: Maven, Gradle, Ant Familiar with source control systems, such as GIT, including branching, merging, etc. Testing: TDD, unit testing, JUnit, Mockito, Cypress Good knowledge of relational databases such as MySQL … scripts, store procedures Shift to the left: Functional test automation (API testing, UI testing [cucumber, nightwatch]) Nice to have skills: AWS Knowledge of Open Source BPMN workflow engines (Camunda, Activiti or Flowable) Experience on a front-end javascript framework such as react, angular or vue.js RedHat OpenShift ...

Machine Learning Engineer

Hiring Organisation
MicroTECH Global Ltd
Location
Egham, Surrey, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
This role is available on a permanent basis but we are also open to hiring a contractor for an initial 6 month period, working via agency. The role is inside IR35. Role and Responsibilities As a Senior Machine Learning Research Engineer in Speech/Audio/… signal processing conferences and journals (e.g., ICML, NeurIPS, ICLR, CVPR, SysML, INTERSPEECH, ICASSP, IEEE/ACM TASLP, IEEE TPAMI, JMLR). Experience with open-source speech processing toolkits (e.g., Hugging Face Transformers, SpeechBrain, ESPnet, Kaldi, NeMo). Experience developing and deploying AI models on Android mobile platforms. Proven ...

AI Prompt Engineer

Hiring Organisation
Staffworx Limited
Location
East London, London, United Kingdom
Employment Type
Contract
Contract Rate
market rates, outside IR35, remote first, UK but 1-2 days on site
model safety, bias mitigation, evaluation frameworks and governance. Background in Computer Science, AI/ML, Engineering, or related fields. Experience deploying or fine-tuning open-source LLMs. Tech Stack LLMs: GPT-4/5, Claude 3.x, Gemini 2.x, Mistral Large, LLaMA 3, Cohere Command R+, DeepSeek Frameworks: LangChain ...

Senior Software Developer Python (SC Cleared)

Hiring Organisation
Certes IT Service Solutions
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£625 - £650 per day + Negotiable
project too. Responsibilities include: Work within a multi-disciplinary product team and lead decisions on development and maintenance of a robust, scalable open data website (front end and back end); it's services and API's. Provide strategic technical leadership by setting software architecture, engineering practices, and technical direction … Collaborate with teams to select technologies, shape roadmaps, and deliver resilient, maintainable digital services that meet programme goals Represent the department at technical forums, open-source communities, and government working groups Ensure delivery aligns with the Service Standard, Technology Code of Practice, and departmental governance processes Essential Skills ...

Senior Go Developer

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Contract, Work From Home
focused approach, ideally within fast-paced tech organisations (start-ups or scale-ups) Knowledge of Kafka, Cassandra, gRPC, and microservices is a strong advantage Open-source contributions are beneficial If you're a Senior Go Developer looking for a challenging 6-month contract with a forward-thinking tech ...

Full Stack Developer

Hiring Organisation
Stackstudio Digital Ltd
Location
Manchester, North West, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
From £450 to £460 per day
Management. Experience in TDD and enterprise Angular applications (Angular 12+ or similar). Knowledge of Java 8+, Spring Boot, Spring MVC, RESTful APIs, and open-source frameworks. Proficiency in TypeScript, HTML5, CSS3, SCSS, and responsive web design. Exposure to AWS technology stacks (serverless applications, Step Functions/Workflows ...

Senior Go Developer

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Contract
take ownership across the full development lifecycle, from system design and implementation to optimisation and release. You'll be working in an open, fast-moving environment where ideas get tested quickly and good engineering practices are taken seriously. If you like seeing your work go live within days … technology-driven organisations or start-ups Experience with Kafka, Cassandra, gRPC, and microservices architecture will also be beneficial, as well as experience contributing to open-source projects If you're a Senior Go Developer looking for a fast-paced, collaborative contract role where your work will ship quickly ...

Backend Software Engineer

Hiring Organisation
Fruition Group
Location
United Kingdom
Employment Type
Contract
fast-moving, tech-focused organisations (e.g. start-ups or scale-ups) Additional skills with Kafka, Cassandra, gRPC, and microservices design are highly advantageous Open-source contributions are a plus This is an excellent opportunity for a Backend Software Engineer who thrives on tackling technical challenges and wants ...

AI Developer/Engineer

Hiring Organisation
Damia Group Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £650 per day
What you will bring to the team Fine-tune Large Language Models (LLMs) and other generative architectures. Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business use cases using prompt engineering and reinforcement learning. Experiment with model configurations to balance performance, cost, and scalability. Build ...

Backend Engineer

Hiring Organisation
Fruition Group
Location
United Kingdom
Employment Type
Contract
organisations or start-ups Hands-on skills in Kafka, Cassandra, gRPC, and microservices architecture will also be beneficial, as well as experience contributing to open-source projects If you're a passionate Backend Engineer who enjoys working autonomously, taking ownership, and building for impact in a high-trust ...

Lead AI Solutions Architect

Hiring Organisation
Experis
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£700 - £750/day Inside IR35
/ML lifecycle, model governance, and ethical AI. Hands-on experience with platforms such as AWS Bedrock, Azure AI Foundry, Google Vertex, and open-source AI/ML stacks. Familiarity with Agentic AI Frameworks and risk-based AI assurance. Strong grasp of DPIAs, data protection, and transparency requirements. … technical standards. Hands-on delivery of AI solutions - not just oversight. Preference for candidates with a "doer" mindset - technically capable and execution-focused. People Source Consulting Ltd is acting as an Employment Business in relation to this vacancy. People Source specialise in technology recruitment across niche markets including ...

Python Developer - Remote - 6 months

Hiring Organisation
Stealth IT Consulting Limited
Location
United Kingdom
Employment Type
Contract
Contract Rate
£400 per day 400 Inside IR35
Azure Key Vault Experience with Azure SQL or PostgreSQL Experience instrumenting applications with Application Insights Strong unit and integration testing experience Experience working with open-source software Desirable Skills & Experience Experience with Docker and container platforms Experience with Azure Functions, Container Apps, or AKS Experience with Azure Service ...

AI ML Engineer

Hiring Organisation
Stackstudio Digital Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £425 to £450 per day
ensure reliability, auto scaling using Prometheus, Dynatrace, and Lang Smith Desirable Skills/Knowledge/Experience Hands-on experience with GenAI, Gemini, or open-source LLMs; train, fine-tune, and onboard new LLMs Experience in building GenAI applications using Python Hands-on experience with API development and microservices ...

C# .Net Developer

Hiring Organisation
Damia Group Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £650/day
team Solid C# .Net experience Fine-tune Large Language Models (LLMs) and other generative architectures. Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business use cases using prompt engineering and reinforcement learning. Experiment with model configurations to balance performance, cost, and scalability. Build robust data ...

GIS developer

Hiring Organisation
Panoramic Associates
Location
Bristol, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £400/day
Developer, Analyst/Programmer or similar role. Strong technical grounding in: ESRI ArcGIS/ArcGIS Online/ArcGIS Enterprise QGIS and open-source GIS tools Spatial databases (PostgreSQL/PostGIS, SQL Server Spatial, Oracle Spatial) Python, JavaScript, REST APIs, HTML/CSS Experience developing web-mapping applications (ArcGIS ...

Senior Software Developer Python

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day
What You'll Do: As a vital member of the National Data Library team, you will: Lead the design, development, and maintenance of scalable open data services and APIs. Set software architecture, engineering practises, and technical direction. Collaborate with multi-disciplinary teams to select technologies and deliver resilient digital … services. Represent the department in technical forums and open-source communities. Ensure alignment with Service Standards and governance processes. About: Our client is at the forefront of modern digital government, driving initiatives that join up public sector services and harness the power of AI for the public good. ...

PKI Architect - DV Cleared

Hiring Organisation
Experis
Location
Basingstoke, Hampshire, United Kingdom
Employment Type
Contract
Agile software development and delivery. Active Directory, secure networks, and system hardening expertise. Knowledge of scripting with tools such as Python and working with open-source products. This PKI Architect role is ideal for someone who thrives in a collaborative, fast-paced environment and is committed to technical ...

SC cleared Red Hat OpenStack Engineer

Hiring Organisation
Salt Search
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£380 - £400 per day
This role focuses on designing, deploying, troubleshooting a secure grade private environment using Red Hat's supported distribution of the OpenStack open-source cloud operating system: Red Hat OpenStack Platform (RHOSP). It will be deployed between two sites, in a resilient design. The RHOSP engineer will support ...

OS Frameworks Engineer

Hiring Organisation
US TECH SOLUTIONS LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£54.00 - £58.00 per hour
performance profiling, security models, or unit testing frameworks (e.g., JUnit). Experience developing software for VR/AR devices or mobile platforms. Contributions to open-source Android projects, custom ROMs, or similar. ...

Android Developer/Engineer

Hiring Organisation
eTeam Workforce Limited
Location
Burgess Hill, Sussex, United Kingdom
Employment Type
Contract
Contract Rate
GBP Daily
Circle CI Continuous Integration patterns Finding and fixing bugs Asynchronous coding patterns Performance Analysis and Optimization Dealing with Legacy code Unit & Integration Tests Open Source Working in a globally distributed team Self-starting and good at time management Integrating with bespoke lovingly hand-crafted Back End services from … days of yore. Designing solutions for open ended problems Bachelor's degree in Computer Science or related field, or equivalent experience. Relevant technologies that you may encounter on our team: Jetpack Compose MVI Architecture REST APIs OkHttp RAML API Documentation Dagger Kotlin, Coroutines, Flow RxJava GitHub Actions Circle ...

Android Developer

Hiring Organisation
Stackstudio Digital Ltd
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Contract
Contract Rate
From £435 to £450 per day
knowledge of Android SDK, Android UI design principles, patterns, and best practices Experience with offline storage, threading, and performance tuning Awesome knowledge of the open-source Android ecosystem and the libraries available for common tasks and benchmarking and optimization Proficient in Google's Android design principles, interface guidelines ...

Android Developer

Hiring Organisation
International Business Solutions Consulting Limited
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Contract, Work From Home
knowledge of Android SDK, Android UI design principles, patterns, and best practices, Experience with offline storage, threading, and performance tuning, Awesome knowledge of the open-source Android ecosystem and the libraries available, for common tasks and benchmarking and optimisation, Proficient in Google's Android design principles, interface guidelines ...

Android Developer

Hiring Organisation
Adroit People Ltd
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Contract
Contract Rate
£400 per day
knowledge of Android SDK, Android UI design principles, patterns, and best practices Experience with offline storage, threading, and performance tuning Awesome knowledge of the open-source Android ecosystem and the libraries available for common tasks and benchmarking and optimisation Proficient in Google's Android design principles, interface guidelines ...