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42 Contract API jobs in West London + 20 miles
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Senior API Technical Consultant (GraphQL Specialist)
Senior API Technical Consultant (GraphQL Specialist)
Staffworx Limited
Slough (SL1)
market rates, outside IR35, 2 days on site
Lead the designand evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. * Expert levelGraphQL, including advanced API design, schema evolution, performance optimisation.
Lead the designand evolution of our API schemas, ensuring they meet the complex demands of a rapidly growing platform. * Expert levelGraphQL, including advanced API design, schema evolution, performance optimisation.
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This role is ideal for someone who specialises in system integration, API design, and cloud-based architecture (Azure) and enjoys shaping strategy as well as guiding delivery teams. * Design and govern API-led integrations, interface specifications, message schemas, and data flows. * Hands-on knowledge of Microsoft Azure integration services (API Management, Service Bus, Logic Apps, Event Grid, etc.) * Strong understanding of enterprise integration patterns, API management platforms (Apigee/Azure API Mgmt)
This role is ideal for someone who specialises in system integration, API design, and cloud-based architecture (Azure) and enjoys shaping strategy as well as guiding delivery teams. * Design and govern API-led integrations, interface specifications, message schemas, and data flows. * Hands-on knowledge of Microsoft Azure integration services (API Management, Service Bus, Logic Apps, Event Grid, etc.) * Strong understanding of enterprise integration patterns, API management platforms (Apigee/Azure API Mgmt)
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Utilise Fetch API to automate interactions with web services and validate data flows.
Utilise Fetch API to automate interactions with web services and validate data flows.
FEATURED
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API and SDK automation, metadata ingestion and catalogue enrichment
API and SDK automation, metadata ingestion and catalogue enrichment
Azure Cosmos DB (SQL/Mongo API), NoSQL modelling
Azure Cosmos DB (SQL/Mongo API), NoSQL modelling
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Act as the champion for TMF ODA and Open API principles across Energy Services Platform. Strong experience designing and implementing solutions using TM Forum Open APIs and a deep understanding of the ODA and Open API frameworks - Proficiency in RESTful API design, JSON, OpenAPI/Swagger specifications, microservices architecture, and cloud-native deployment models (Docker, Kubernetes, public/hybrid cloud platforms)
Act as the champion for TMF ODA and Open API principles across Energy Services Platform. Strong experience designing and implementing solutions using TM Forum Open APIs and a deep understanding of the ODA and Open API frameworks - Proficiency in RESTful API design, JSON, OpenAPI/Swagger specifications, microservices architecture, and cloud-native deployment models (Docker, Kubernetes, public/hybrid cloud platforms)
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Knowledge of ServiceNow scripting (JavaScript, Glide API) a plus.
Knowledge of ServiceNow scripting (JavaScript, Glide API) a plus.
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We are looking for a strong Full Stack Developer to deliver a short-term project involving a static website build, API scraping, and structured JSON output. * Develop API scraping scripts to extract structured data reliably * Proven experience building API scrapers (Axios, Puppeteer, BeautifulSoup, Cheerio, or similar) * Knowledge of API rate limits and bypass methods
We are looking for a strong Full Stack Developer to deliver a short-term project involving a static website build, API scraping, and structured JSON output. * Develop API scraping scripts to extract structured data reliably * Proven experience building API scrapers (Axios, Puppeteer, BeautifulSoup, Cheerio, or similar) * Knowledge of API rate limits and bypass methods
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Azure Cosmos DB Admin and Developer
Azure Cosmos DB Admin and Developer
Vallum Associates Limited
The City, City of London (EC4), EC4M
£500 per hour
This role involves architecting cloud-native solutions using Azure Cosmos DB (SQL API and Mongo API), implementing effective partitioning strategies, indexing, and consistency models to support real-time financial data processing. Architect and develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API)
This role involves architecting cloud-native solutions using Azure Cosmos DB (SQL API and Mongo API), implementing effective partitioning strategies, indexing, and consistency models to support real-time financial data processing. Architect and develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API)
Strong grasp of API integrations, middleware and multi system architectures.
Strong grasp of API integrations, middleware and multi system architectures.
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Build and maintain API-based integrations with systems such as ServiceNow, NetBox, and GitHub.
Build and maintain API-based integrations with systems such as ServiceNow, NetBox, and GitHub.
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Solid understanding of system design principles and API development.
Solid understanding of system design principles and API development.
PREMIUM
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Solutions Architect - 6 months £700 per day - This logistics business, based in central London, has undertaken a significant change and transformation programme, the outcome of which is a new multi SAAS platform that will underpins the future state of the architecture. As part of this programme we are looking for a Solution Architect to contribute to shaping the future-state architecture that enables the organisation to meet its strategic business goals. This role ensures that technology solutions directly support desired business outcomes - such as improved efficiency, customer experience, scalability, and innovation-while maintaining strong architectural integrity. The Solution Architect oversees the design of systems and applications across the enterprise and regularly reviews the application portfolio to maximise value, reduce complexity, and ensure agility.
Solutions Architect - 6 months £700 per day - This logistics business, based in central London, has undertaken a significant change and transformation programme, the outcome of which is a new multi SAAS platform that will underpins the future state of the architecture. As part of this programme we are looking for a Solution Architect to contribute to shaping the future-state architecture that enables the organisation to meet its strategic business goals. This role ensures that technology solutions directly support desired business outcomes - such as improved efficiency, customer experience, scalability, and innovation-while maintaining strong architectural integrity. The Solution Architect oversees the design of systems and applications across the enterprise and regularly reviews the application portfolio to maximise value, reduce complexity, and ensure agility.
Job Title:Salesforce Tech Lead - Location:Windsor, UK (1 day a week) Job Purpose and Primary Objectives:Salesforce Tech Lead - Key Responsibilities (Please specify if the position is an individual one or part of a team) * Participate in refining and scoping upcoming sprint work. * Assist solution architects with technical design and breaking down complex tasks. * Accountable for timely delivery of assigned tickets, meeting acceptance criteria. * Conduct spikes/investigations into innovative technologies for future project viability. * Ensure teammates' work meets code quality standards through reviews. * Coordinate with other teams for integrations, ensuring alignment of tasks and APIs. * Work with the QA team to investigate and resolve issues. * Mentor junior team members, providing assistance with tasks and problem-solving.
Job Title:Salesforce Tech Lead - Location:Windsor, UK (1 day a week) Job Purpose and Primary Objectives:Salesforce Tech Lead - Key Responsibilities (Please specify if the position is an individual one or part of a team) * Participate in refining and scoping upcoming sprint work. * Assist solution architects with technical design and breaking down complex tasks. * Accountable for timely delivery of assigned tickets, meeting acceptance criteria. * Conduct spikes/investigations into innovative technologies for future project viability. * Ensure teammates' work meets code quality standards through reviews. * Coordinate with other teams for integrations, ensuring alignment of tasks and APIs. * Work with the QA team to investigate and resolve issues. * Mentor junior team members, providing assistance with tasks and problem-solving.
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Windsor, UK - Will the role be 100% remote, Hybrid or 100% office? (Mandatory) Hybrid (visit to office once every week) to begin with - Is BGC required to completed before joining?(Y/N) * Participate in refining and scoping upcoming sprint work. * Assist solution architects with technical design and breaking down complex tasks. * Accountable for timely delivery of assigned tickets, meeting acceptance criteria. * Conduct spikes/investigations into innovative technologies for future project viability. * Ensure teammates' work meets code quality standards through reviews. * Coordinate with other teams for integrations, ensuring alignment of tasks and APIs. * Work with the QA team to investigate and resolve issues. * Mentor junior team members, providing assistance with tasks and problem-solving. * At least 5+ years Salesforce, both declarative and programmatic * Sales an
Windsor, UK - Will the role be 100% remote, Hybrid or 100% office? (Mandatory) Hybrid (visit to office once every week) to begin with - Is BGC required to completed before joining?(Y/N) * Participate in refining and scoping upcoming sprint work. * Assist solution architects with technical design and breaking down complex tasks. * Accountable for timely delivery of assigned tickets, meeting acceptance criteria. * Conduct spikes/investigations into innovative technologies for future project viability. * Ensure teammates' work meets code quality standards through reviews. * Coordinate with other teams for integrations, ensuring alignment of tasks and APIs. * Work with the QA team to investigate and resolve issues. * Mentor junior team members, providing assistance with tasks and problem-solving. * At least 5+ years Salesforce, both declarative and programmatic * Sales an
Description - 1. Consumes existing messages from the AMP bus (AMPS is a product from 60East) containing Json messages. 2. Transforms and Routes messages to Dynatrace ingest endpoints. 3. Publishes metrics/dimensions via Dynatrace v2 APIs. 4. Enriches records with required Dynatrace metadata (e.g., dt.entity.host) to correctly bind data to hosts/entitiesmethod for building/maintaining the metadata mapping table to be agreed during design. Key Responsibilities * Design and implement the message consumer and router for Application to Dynatracetarget processor. * Publish metrics/dimensions to Dynatrace v2 APIs correctly and efficiently. * Create and manage metadata enrichment to bind data to hosts/entities (e.g., dt.entity.host). * Ensure security, reliability, and observability of the integration. * Collaborate with platform monitoring team and SREs for alignment and app
Description - 1. Consumes existing messages from the AMP bus (AMPS is a product from 60East) containing Json messages. 2. Transforms and Routes messages to Dynatrace ingest endpoints. 3. Publishes metrics/dimensions via Dynatrace v2 APIs. 4. Enriches records with required Dynatrace metadata (e.g., dt.entity.host) to correctly bind data to hosts/entitiesmethod for building/maintaining the metadata mapping table to be agreed during design. Key Responsibilities * Design and implement the message consumer and router for Application to Dynatracetarget processor. * Publish metrics/dimensions to Dynatrace v2 APIs correctly and efficiently. * Create and manage metadata enrichment to bind data to hosts/entities (e.g., dt.entity.host). * Ensure security, reliability, and observability of the integration. * Collaborate with platform monitoring team and SREs for alignment and app
PREMIUM
What were looking for - Mercator is seeking a dynamic, forward-thinking? You will be open-minded, happy to work on your own or as part of a team and want to learn new technologies and promote best practice. Mercator Scala Developers work collaboratively in multidisciplinary agile scrum teams to develop, modify and maintain user interfaces for new digital services. Using agile methods, you will work closely with other members of the scrum team throughout the development cycle in order to design, build, test, maintain and support the new digital services. * Build, deploy and operate outstanding digital services within an agile environment that meet well defined user needs * Deliver application designs that meet web standards, ensuring that key elements are built in from the outset * Collaborate with design specialists to translate designs into high quality websites, app
What were looking for - Mercator is seeking a dynamic, forward-thinking? You will be open-minded, happy to work on your own or as part of a team and want to learn new technologies and promote best practice. Mercator Scala Developers work collaboratively in multidisciplinary agile scrum teams to develop, modify and maintain user interfaces for new digital services. Using agile methods, you will work closely with other members of the scrum team throughout the development cycle in order to design, build, test, maintain and support the new digital services. * Build, deploy and operate outstanding digital services within an agile environment that meet well defined user needs * Deliver application designs that meet web standards, ensuring that key elements are built in from the outset * Collaborate with design specialists to translate designs into high quality websites, app
Key Responsibilities - AEM Development: Design, develop, and maintain AEM components, templates, workflows, and OSGi services using Java and the Sling framework. Front-End Integration: Collaborate with UX/UI teams to integrate front-end code (HTML, CSS, JavaScript/React/Angular) into AEM for a responsive user experience. System Integration: Integrate AEM with other core systems and Adobe Experience Cloud products (like Adobe Analytics, Adobe Target, and Adobe Campaign) using APIs (e.g., RESTful). Deployment and Support: Participate in the deployment process, conduct unit and system testing, and troubleshoot/debug issues in AEM environments. Best Practices: Ensure code quality, security, and performance by adhering to AEM and general software development best practices (e.g., in an Agile environment). AEM Sites Assets - AEM Components - AEM Core Development - Adobe Exp
Key Responsibilities - AEM Development: Design, develop, and maintain AEM components, templates, workflows, and OSGi services using Java and the Sling framework. Front-End Integration: Collaborate with UX/UI teams to integrate front-end code (HTML, CSS, JavaScript/React/Angular) into AEM for a responsive user experience. System Integration: Integrate AEM with other core systems and Adobe Experience Cloud products (like Adobe Analytics, Adobe Target, and Adobe Campaign) using APIs (e.g., RESTful). Deployment and Support: Participate in the deployment process, conduct unit and system testing, and troubleshoot/debug issues in AEM environments. Best Practices: Ensure code quality, security, and performance by adhering to AEM and general software development best practices (e.g., in an Agile environment). AEM Sites Assets - AEM Components - AEM Core Development - Adobe Exp
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*inside IR35* Key Responsibilities * Lead the design, implementation, and optimisation of CyberArk PAM solutions. * Manage CyberArk components including Vault, CPM, PSM, PSMP, CCP, PTA, AIM. * Plan and execute major version upgrades and migrations. * Automate credential onboarding, rotation, and decommissioning. * Develop and maintain Safes, RBAC structures, and master policies aligned to NIST 800-53 and Zero Trust. * Build custom connectors for non-standard platforms (e.g., Oracle Cloud). * Provide SME-level support and troubleshooting across CyberArk environments. * Integrate CyberArk with DevOps pipelines using AIM/AAM/Conjur. * Maintain documentation and deliver training to internal teams. Required Skills & Experience * 10+ years of hands-on experience with CyberArk PAM suite. * Strong knowledge of privileged access concepts, RBAC, and compliance frameworks (NIST,
*inside IR35* Key Responsibilities * Lead the design, implementation, and optimisation of CyberArk PAM solutions. * Manage CyberArk components including Vault, CPM, PSM, PSMP, CCP, PTA, AIM. * Plan and execute major version upgrades and migrations. * Automate credential onboarding, rotation, and decommissioning. * Develop and maintain Safes, RBAC structures, and master policies aligned to NIST 800-53 and Zero Trust. * Build custom connectors for non-standard platforms (e.g., Oracle Cloud). * Provide SME-level support and troubleshooting across CyberArk environments. * Integrate CyberArk with DevOps pipelines using AIM/AAM/Conjur. * Maintain documentation and deliver training to internal teams. Required Skills & Experience * 10+ years of hands-on experience with CyberArk PAM suite. * Strong knowledge of privileged access concepts, RBAC, and compliance frameworks (NIST,
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*inside IR35* Key Responsibilities * Lead the design, implementation, and optimisation of CyberArk PAM solutions. * Manage CyberArk components including Vault, CPM, PSM, PSMP, CCP, PTA, AIM. * Plan and execute major version upgrades and migrations. * Automate credential onboarding, rotation, and decommissioning. * Develop and maintain Safes, RBAC structures, and master policies aligned to NIST 800-53 and Zero Trust. * Build custom connectors for non-standard platforms (e.g., Oracle Cloud). * Provide SME-level support and troubleshooting across CyberArk environments. * Integrate CyberArk with DevOps pipelines using AIM/AAM/Conjur. * Maintain documentation and deliver training to internal teams. Required Skills & Experience * 10+ years of hands-on experience with CyberArk PAM suite. * Strong knowledge of privileged access concepts, RBAC, and compliance frameworks (NIST,
*inside IR35* Key Responsibilities * Lead the design, implementation, and optimisation of CyberArk PAM solutions. * Manage CyberArk components including Vault, CPM, PSM, PSMP, CCP, PTA, AIM. * Plan and execute major version upgrades and migrations. * Automate credential onboarding, rotation, and decommissioning. * Develop and maintain Safes, RBAC structures, and master policies aligned to NIST 800-53 and Zero Trust. * Build custom connectors for non-standard platforms (e.g., Oracle Cloud). * Provide SME-level support and troubleshooting across CyberArk environments. * Integrate CyberArk with DevOps pipelines using AIM/AAM/Conjur. * Maintain documentation and deliver training to internal teams. Required Skills & Experience * 10+ years of hands-on experience with CyberArk PAM suite. * Strong knowledge of privileged access concepts, RBAC, and compliance frameworks (NIST,
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My Customer is looking for a talented Sharepoint Developer to join their growing team. You’ll play a key role in building, and maintaining PowerApps, ensuring seamless integration with SharePoint and other Microsoft 365 tools. You’ll also help define and implement versioning and governance policies to keep the Power Platform solutions organised, secure, and scalable. * Strong experience developing and deploying PowerApps (Canvas and/or Model-Driven). * Proven background working with SharePoint Online (data structure, permissions, and integration). * Experience connecting PowerApps to live data sources (Dataverse, SQL, SharePoint, or REST APIs). * Understanding of version control and governance best practices for Power Platform. * Familiarity with Microsoft Teams and OneDrive integration (desirable). * Excellent problem-solving skills and attention to detail.
My Customer is looking for a talented Sharepoint Developer to join their growing team. You’ll play a key role in building, and maintaining PowerApps, ensuring seamless integration with SharePoint and other Microsoft 365 tools. You’ll also help define and implement versioning and governance policies to keep the Power Platform solutions organised, secure, and scalable. * Strong experience developing and deploying PowerApps (Canvas and/or Model-Driven). * Proven background working with SharePoint Online (data structure, permissions, and integration). * Experience connecting PowerApps to live data sources (Dataverse, SQL, SharePoint, or REST APIs). * Understanding of version control and governance best practices for Power Platform. * Familiarity with Microsoft Teams and OneDrive integration (desirable). * Excellent problem-solving skills and attention to detail.
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We are seeking a highly skilled LLM Developer to design, build, and deploy a web-based AI agent that will automate and elevate our core QA coordination tasks. * Design & Implement NLP Pipelines: Parse, understand, and extract key information from unstructured Release Notes and Test Policy documents. * Develop RAG Systems: Fine-tune a Retrieval-Augmented Generation (RAG) system, training models on QA policies for accuracy and context-awareness. * Build AI Agent Architecture: Utilize modern LLM APIs (e.g., OpenAI, Anthropic, Gemini) and frameworks (e.g., LangChain, LlamaIndex) to create a robust system. * Integrate Backend APIs: Enable the AI agent to automatically publish generated test guides to our internal web platform. * Create Web-Based UI: Develop a simple, effective interface for QA teams to interact with, review, and override AI outputs if necessary.
We are seeking a highly skilled LLM Developer to design, build, and deploy a web-based AI agent that will automate and elevate our core QA coordination tasks. * Design & Implement NLP Pipelines: Parse, understand, and extract key information from unstructured Release Notes and Test Policy documents. * Develop RAG Systems: Fine-tune a Retrieval-Augmented Generation (RAG) system, training models on QA policies for accuracy and context-awareness. * Build AI Agent Architecture: Utilize modern LLM APIs (e.g., OpenAI, Anthropic, Gemini) and frameworks (e.g., LangChain, LlamaIndex) to create a robust system. * Integrate Backend APIs: Enable the AI agent to automatically publish generated test guides to our internal web platform. * Create Web-Based UI: Develop a simple, effective interface for QA teams to interact with, review, and override AI outputs if necessary.
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Technical Delivery Manager (SC Cleared)
Technical Delivery Manager (SC Cleared)
Sanderson Recruitment
City of London (EC1), EC1
£600 - £650 per day
Technical Delivery Manager, Delivery Manager - We are working with a leading central government organisation to find a Technical Delivery Manager with a strong data delivery expertise and active SC Clearance. You will be required to lead cross functional teams to deliver a data focused technology project that supports high impact public services, ensuring outcomes are aligned with departmental strategy, governance and security standards - Rate - £650.00 per day inside ir35 - Location - London - Once a week onsite - Duration - 6 Months with the opportunity of extension - Key Responsibilities and Key Skills * Deliver end to end technical and data driven projects within a complex government environment * Manage project scopes, timelines, risks, budgets, dependencies and reporting in line with government delivery frameworks
Technical Delivery Manager, Delivery Manager - We are working with a leading central government organisation to find a Technical Delivery Manager with a strong data delivery expertise and active SC Clearance. You will be required to lead cross functional teams to deliver a data focused technology project that supports high impact public services, ensuring outcomes are aligned with departmental strategy, governance and security standards - Rate - £650.00 per day inside ir35 - Location - London - Once a week onsite - Duration - 6 Months with the opportunity of extension - Key Responsibilities and Key Skills * Deliver end to end technical and data driven projects within a complex government environment * Manage project scopes, timelines, risks, budgets, dependencies and reporting in line with government delivery frameworks
FEATURED
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12 months - Remote - Inside IR35 - Umbrella only - As a Salesforce Developer, you will lead the development of custom solutions on the Salesforce platform. You will be responsible for writing Apex code, creating visual force pages, and implementing integrations. You will have a strong understanding of the Salesforce platform and experience leading successful projects. A Senior Salesforce Developer will have a deep understanding of the Salesforce platform and the ability to develop complex solutions, mentor and lead the development team, troubleshoot and provide technical support to clients. They will also have a solid understanding of web development concepts and languages and keep up-to-date with new Salesforce features and best practices. * Skilled in Apex, HTML, JavaScript (ES6+), CSS, SLDS, and Salesforce DX.
12 months - Remote - Inside IR35 - Umbrella only - As a Salesforce Developer, you will lead the development of custom solutions on the Salesforce platform. You will be responsible for writing Apex code, creating visual force pages, and implementing integrations. You will have a strong understanding of the Salesforce platform and experience leading successful projects. A Senior Salesforce Developer will have a deep understanding of the Salesforce platform and the ability to develop complex solutions, mentor and lead the development team, troubleshoot and provide technical support to clients. They will also have a solid understanding of web development concepts and languages and keep up-to-date with new Salesforce features and best practices. * Skilled in Apex, HTML, JavaScript (ES6+), CSS, SLDS, and Salesforce DX.
FEATURED
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12 months - Remote - Inside IR35 - Umbrella only - Active SC clearance required - As a Salesforce Developer, you will lead the development of custom solutions on the Salesforce platform. You will be responsible for writing Apex code, creating visual force pages, and implementing integrations. You will have a strong understanding of the Salesforce platform and experience leading successful projects. A Senior Salesforce Developer will have a deep understanding of the Salesforce platform and the ability to develop complex solutions, mentor and lead the development team, troubleshoot and provide technical support to clients. They will also have a solid understanding of web development concepts and languages and keep up-to-date with new Salesforce features and best practices. * Skilled in Apex, HTML, JavaScript (ES6+), CSS, SLDS, and Salesforce DX.
12 months - Remote - Inside IR35 - Umbrella only - Active SC clearance required - As a Salesforce Developer, you will lead the development of custom solutions on the Salesforce platform. You will be responsible for writing Apex code, creating visual force pages, and implementing integrations. You will have a strong understanding of the Salesforce platform and experience leading successful projects. A Senior Salesforce Developer will have a deep understanding of the Salesforce platform and the ability to develop complex solutions, mentor and lead the development team, troubleshoot and provide technical support to clients. They will also have a solid understanding of web development concepts and languages and keep up-to-date with new Salesforce features and best practices. * Skilled in Apex, HTML, JavaScript (ES6+), CSS, SLDS, and Salesforce DX.
FEATURED