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- Southwark
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106 Contract API jobs in Charing Cross, Central London + 20 miles
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Senior EUC Mac Support Engineer - Active SC required
Senior EUC Mac Support Engineer - Active SC required
Skillsbay Limited
SW1A, South West London
£350 per day inside IR35
API integration experience.
API integration experience.
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Connecting to Bakcend API
Connecting to Bakcend API
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Microsoft Power Platform / Agentic AI Engineer
Microsoft Power Platform / Agentic AI Engineer
cer Financial
EC2M, City of London
£705 per day £705 per day (via Umbrella)
Microsoft 365 & Graph API Integration * Proficiency in Microsoft Graph API, Azure OpenAI, and Semantic Kernel
Microsoft 365 & Graph API Integration * Proficiency in Microsoft Graph API, Azure OpenAI, and Semantic Kernel
FEATURED
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Senior Data Engineer
Senior Data Engineer
I3 Resourcing Limited
The City, EC3V 3ND
£80000 - £100000 per annum + + EXCELLENT BONUS + BENEFITS
Extensive experience in AWS services, e.g. EC2, S3, RDS, DynamoDB, Redshift, Lambda, API Gateway
Extensive experience in AWS services, e.g. EC2, S3, RDS, DynamoDB, Redshift, Lambda, API Gateway
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Build, deploy, and monitor cloud solutions using AWS services (Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, S3). * Design and manage applications using Apigee Edge and X, overseeing the full API lifecycle, driving strategy, and enhancing integrations with analytics. * Enforce security best practices, manage API access (OAuth, API keys, JWT), remediate vulnerabilities, and align with compliance standards in collaboration with security teams. * Strong knowledge of Apigee and API management, including design patterns, performance tuning, and analytics.
Build, deploy, and monitor cloud solutions using AWS services (Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, S3). * Design and manage applications using Apigee Edge and X, overseeing the full API lifecycle, driving strategy, and enhancing integrations with analytics. * Enforce security best practices, manage API access (OAuth, API keys, JWT), remediate vulnerabilities, and align with compliance standards in collaboration with security teams. * Strong knowledge of Apigee and API management, including design patterns, performance tuning, and analytics.
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.NET Developer
.NET Developer
Halian Technology Limited
W1, Central London
From £70,000 to £80,000 per annum Plus bonus and benefits
Proven hands-on experience withAWS servicessuch as Lambda, ECS/Fargate, API Gateway, DynamoDB, S3, CloudFormation/Terraform.
Proven hands-on experience withAWS servicessuch as Lambda, ECS/Fargate, API Gateway, DynamoDB, S3, CloudFormation/Terraform.
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Data security, encryption standards, secure API architecture and GDPR compliance
Data security, encryption standards, secure API architecture and GDPR compliance
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API Development:Experience building data-centric APIs, especially withFastAPIon serverless platforms likeGoogle App Engine.
API Development:Experience building data-centric APIs, especially withFastAPIon serverless platforms likeGoogle App Engine.
Strong background in software architecture, microservices, and API design.
Strong background in software architecture, microservices, and API design.
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Build and work with modern API and microservices architectures
Build and work with modern API and microservices architectures
NEWPREMIUM
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Build and work with modern API and microservices architectures
Build and work with modern API and microservices architectures
NEWEQUALITY BOOST
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Senior Backend Engineer (Platform & Security)
Senior Backend Engineer (Platform & Security)
Ventula Consulting Limited
The City, EC3V 9DU
Up to £140,000 per annum
Strong understanding of distributed systems, microservices architecture, and API design.
Strong understanding of distributed systems, microservices architecture, and API design.
Senior Android Engineer (Native Integration & Security)
Senior Android Engineer (Native Integration & Security)
Ventula Consulting Limited
The City, EC3V 9DU
Up to £140,000 per annum
Build a robust, efficient, and scalable client-side API integration layer to consume real-time security signals (like our proprietary Scam_Score) from the AI Core. Partner with the Senior Backend Engineer (Application & AI Orchestration) to define the API contracts and real-time data flow needed to power the Security Shield.
Build a robust, efficient, and scalable client-side API integration layer to consume real-time security signals (like our proprietary Scam_Score) from the AI Core. Partner with the Senior Backend Engineer (Application & AI Orchestration) to define the API contracts and real-time data flow needed to power the Security Shield.
Senior Android Engineer (UI/UX & Welcome Manager)
Senior Android Engineer (UI/UX & Welcome Manager)
Ventula Consulting Limited
The City, EC3V 9DU
Up to £140,000 per annum
API & Backend Integration: Partner with our backend (Application & AI Orchestration) engineers to define and integrate the client-side APIs and data models required to power the Welcome Manager's features, from live transcription to post-call entity-extracted summaries.
API & Backend Integration: Partner with our backend (Application & AI Orchestration) engineers to define and integrate the client-side APIs and data models required to power the Welcome Manager's features, from live transcription to post-call entity-extracted summaries.
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Leading IT Consultancy with offices in UK and Europe (Netherlands, Belgium and Switzerland) is looking to recruit a permanent Senior Angular C# .Net Developer. We deliver a range of services from IT Consultancy, Software Project Development and Application Support Services for our corporate clients covering Insurance, Retail, FMCG, Automotive, Logistics & Leasing, Publishing and Charity domains (including UN organizations) which are well-known names. This Angular C# .NET Developer is a contract role for minimum 6-12 months and has a hybrid work schedule, split between Working from Home and 2 days per week on site in London. The role is open for permanent applications too. 5+ years of commercial experience in C# .NET development essential - Minimum 2 years experience with Angular (v.10+) - mandatory - Rest APIs incorporated with SQL Server or Sybase DB - mandatory
Leading IT Consultancy with offices in UK and Europe (Netherlands, Belgium and Switzerland) is looking to recruit a permanent Senior Angular C# .Net Developer. We deliver a range of services from IT Consultancy, Software Project Development and Application Support Services for our corporate clients covering Insurance, Retail, FMCG, Automotive, Logistics & Leasing, Publishing and Charity domains (including UN organizations) which are well-known names. This Angular C# .NET Developer is a contract role for minimum 6-12 months and has a hybrid work schedule, split between Working from Home and 2 days per week on site in London. The role is open for permanent applications too. 5+ years of commercial experience in C# .NET development essential - Minimum 2 years experience with Angular (v.10+) - mandatory - Rest APIs incorporated with SQL Server or Sybase DB - mandatory
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Senior Technical Business Analyst
Senior Technical Business Analyst
REC SOLUTIONS LIMITED
The City, EC4
Competitive base salary plus bonus and benefits
Technical documentation Produce and maintain detailed technical and functional documentation, including API specifications, configuration workflows, and integration guides. * Proven ability to produce and maintain high-quality technical documentation and API specifications suitable for both engineering and client consumption.
Technical documentation Produce and maintain detailed technical and functional documentation, including API specifications, configuration workflows, and integration guides. * Proven ability to produce and maintain high-quality technical documentation and API specifications suitable for both engineering and client consumption.
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Senior Backend Engineer (Application & AI Orchestration)
Senior Backend Engineer (Application & AI Orchestration)
Ventula Consulting Limited
The City, EC3V 9DU
Up to £140,000 per annum
API & Application Development? Partner closely with the Senior Android Engineers to define robust API contracts and ensure a seamless, low-latency experience for the live transcript and mid-call intervention features.
API & Application Development? Partner closely with the Senior Android Engineers to define robust API contracts and ensure a seamless, low-latency experience for the live transcript and mid-call intervention features.
Senior Backend Engineer (Telco Integration Lead)
Senior Backend Engineer (Telco Integration Lead)
Ventula Consulting Limited
The City, EC3V 9DU
Up to £140,000 per annum
We are seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. Own and build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. Ensure all network API integrations meet the stringent P99 latency budgets (e.g., < 150ms) required to support our sub-500ms Time-to-Trust product goal. Collaborate with the platform team to build a parallel development path using mocked data to mitigate risks of network API delays. Deep understanding of API design (REST, gRPC, Webhooks) and API security (OAuth 2.0, mTLS, JWTs).
We are seeking a foundational engineer to own our single greatest strategic asset: our unique, privileged access to network-level intelligence via the GSMA CAMARA API standard. Own and build the Security Signal Ingestion path, the secure, low-latency, and out-of-band data channel connecting to our founding members' network API gateways. Ensure all network API integrations meet the stringent P99 latency budgets (e.g., < 150ms) required to support our sub-500ms Time-to-Trust product goal. Collaborate with the platform team to build a parallel development path using mocked data to mitigate risks of network API delays. Deep understanding of API design (REST, gRPC, Webhooks) and API security (OAuth 2.0, mTLS, JWTs).
6-month initial contract * Outside IR35 * 2/3 Days per week on site * £750+ per day - Xpertise Recruitment is working in partnership with an FTSE 250 organisation to support the growth of their Enterprise Team. We're currently seeking an experienced Enterprise Architect to lead the design and governance of their enterprise-wide technology landscape. This is a strategic role, focused on aligning IT architecture with business objectives, driving platform efficiency, and guiding the adoption of modern technologies. The successful candidate will work closely with senior stakeholders to shape the future of the organisation's digital ecosystem. * Ensure the D365 CE programme aligns with business strategy and the target operating model. * Map the current IT landscape, including legacy CRM/ERP systems, integration layers, data flows, middleware, and reporting platforms.
6-month initial contract * Outside IR35 * 2/3 Days per week on site * £750+ per day - Xpertise Recruitment is working in partnership with an FTSE 250 organisation to support the growth of their Enterprise Team. We're currently seeking an experienced Enterprise Architect to lead the design and governance of their enterprise-wide technology landscape. This is a strategic role, focused on aligning IT architecture with business objectives, driving platform efficiency, and guiding the adoption of modern technologies. The successful candidate will work closely with senior stakeholders to shape the future of the organisation's digital ecosystem. * Ensure the D365 CE programme aligns with business strategy and the target operating model. * Map the current IT landscape, including legacy CRM/ERP systems, integration layers, data flows, middleware, and reporting platforms.
Location: Esher (two days WFH) Must have Right to Work in the UK (cannot provide sponsorship) This person will contribute directly to the organisations digital transformation roadmap by embedding automation and AI into our operations and business. This will involve building AI-powered conversational agents and automating business processes using Microsoft Power Platform tools like Power Apps, Power Automate, and Power Virtual Agents (part of Microsoft Copilot Studio). * Chatbot Development: Design, build, and implement AI chatbots using Power Virtual Agents/Copilot Studio to streamline interactions and automate tasks. * Process Automation: Create automated workflows and processes using Power Automate to improve efficiency and reduce manual tasks, often incorporating AI capabilities. * Application Development: Develop intelligent business applications with Power Apps,
Location: Esher (two days WFH) Must have Right to Work in the UK (cannot provide sponsorship) This person will contribute directly to the organisations digital transformation roadmap by embedding automation and AI into our operations and business. This will involve building AI-powered conversational agents and automating business processes using Microsoft Power Platform tools like Power Apps, Power Automate, and Power Virtual Agents (part of Microsoft Copilot Studio). * Chatbot Development: Design, build, and implement AI chatbots using Power Virtual Agents/Copilot Studio to streamline interactions and automate tasks. * Process Automation: Create automated workflows and processes using Power Automate to improve efficiency and reduce manual tasks, often incorporating AI capabilities. * Application Development: Develop intelligent business applications with Power Apps,
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SeniorPower Platform developer
SeniorPower Platform developer
Halian Technology Limited
W1, Central London
From £70,000 to £85,000 per annum Plus bonus and benefits
My client is an award-winning and market-leading insights and solutions provider across pensions and financial services, energy, health, and analytics. The Opportunity - We're looking for an experienced and innovativePower Platform Developerto join my clients growing team. Youll play a key role in designing, developing, and supporting scalable, user-friendly business applications, automation workflows, and analytics solutions using Microsoft Power Platform. This is a fantastic opportunity to work across a diverse range of business areas, collaborating closely with stakeholders to drive digital transformation and operational efficiency. Key Responsibilities * Design, build, and maintain custom business applications usingPower Apps * Develop and enhance workflows and automations withPower Automate * Create interactive dashboards and data visualisations usingPower BI
My client is an award-winning and market-leading insights and solutions provider across pensions and financial services, energy, health, and analytics. The Opportunity - We're looking for an experienced and innovativePower Platform Developerto join my clients growing team. Youll play a key role in designing, developing, and supporting scalable, user-friendly business applications, automation workflows, and analytics solutions using Microsoft Power Platform. This is a fantastic opportunity to work across a diverse range of business areas, collaborating closely with stakeholders to drive digital transformation and operational efficiency. Key Responsibilities * Design, build, and maintain custom business applications usingPower Apps * Develop and enhance workflows and automations withPower Automate * Create interactive dashboards and data visualisations usingPower BI
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Location: Home Based 5 Month Contract Pay Rate: £600 - £650 per day (INSIDE IR35) Skills: Java 8, Spring, Maven, Git, JUnit, Web APIs (REST/JSON and XML/SOAP), SC Clearance We are looking to recruit an SC Cleared Java Developer for a leading technology consultancy on an initial 5 month contract. This is a fully remote role. Due to the nature of the project valid SC Clearance is required. * Java 8 * Spring * Maven * Git * Junit * Web APIs (REST/JSON and XML/SOAP) * JSPs, Javascript, JQuery, html, CSS, Mockito/JMock, MS SQL Server, MyBatis, Azure, Azure DevOps Pipelines, Docker, Ansible, Linux, Java 11, Spring Boot
Location: Home Based 5 Month Contract Pay Rate: £600 - £650 per day (INSIDE IR35) Skills: Java 8, Spring, Maven, Git, JUnit, Web APIs (REST/JSON and XML/SOAP), SC Clearance We are looking to recruit an SC Cleared Java Developer for a leading technology consultancy on an initial 5 month contract. This is a fully remote role. Due to the nature of the project valid SC Clearance is required. * Java 8 * Spring * Maven * Git * Junit * Web APIs (REST/JSON and XML/SOAP) * JSPs, Javascript, JQuery, html, CSS, Mockito/JMock, MS SQL Server, MyBatis, Azure, Azure DevOps Pipelines, Docker, Ansible, Linux, Java 11, Spring Boot
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£70000-75000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent £70,000 - £75,000 + Package - London (Hybrid) Join a leading global consultancy at the forefront of digital transformation. We're seeking a ServiceNow Technical Architect to lead enterprise-scale ServiceNow implementations, drive innovation, and shape technical strategy across major client engagements. The Role * Support the design and delivery of ServiceNow solutions across multiple product lines (beyond ITSM). * Act as a trusted advisor to clients, translating business challenges into scalable ServiceNow architectures. * Collaborate with stakeholders to define roadmaps, integration strategies, and platform enhancements. * Stay ahead of emerging trends including GenAI, cloud infrastructure, and automation to drive platform innovation. Key Skills & Experience
£70000-75000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent £70,000 - £75,000 + Package - London (Hybrid) Join a leading global consultancy at the forefront of digital transformation. We're seeking a ServiceNow Technical Architect to lead enterprise-scale ServiceNow implementations, drive innovation, and shape technical strategy across major client engagements. The Role * Support the design and delivery of ServiceNow solutions across multiple product lines (beyond ITSM). * Act as a trusted advisor to clients, translating business challenges into scalable ServiceNow architectures. * Collaborate with stakeholders to define roadmaps, integration strategies, and platform enhancements. * Stay ahead of emerging trends including GenAI, cloud infrastructure, and automation to drive platform innovation. Key Skills & Experience
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£95000-120000 GBP - Bonus - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent £95,000 - £120,000 + Package - London (Hybrid) Join a leading global consultancy at the forefront of digital transformation. We're seeking a ServiceNow Technical Architect to lead enterprise-scale ServiceNow implementations, drive innovation, and shape technical strategy across major client engagements. The Role * Lead the design and delivery of ServiceNow solutions across multiple product lines (beyond ITSM). * Act as a trusted advisor to clients, translating business challenges into scalable ServiceNow architectures. * Guide technical teams, ensuring high standards through code reviews, architectural governance, and mentoring. * Collaborate with stakeholders to define roadmaps, integration strategies, and platform enhancements.
£95000-120000 GBP - Bonus - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent £95,000 - £120,000 + Package - London (Hybrid) Join a leading global consultancy at the forefront of digital transformation. We're seeking a ServiceNow Technical Architect to lead enterprise-scale ServiceNow implementations, drive innovation, and shape technical strategy across major client engagements. The Role * Lead the design and delivery of ServiceNow solutions across multiple product lines (beyond ITSM). * Act as a trusted advisor to clients, translating business challenges into scalable ServiceNow architectures. * Guide technical teams, ensuring high standards through code reviews, architectural governance, and mentoring. * Collaborate with stakeholders to define roadmaps, integration strategies, and platform enhancements.
PREMIUM
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Contract Back-End Java Engineer Remote up to £650 per day - 12-month contract (with potential extension) Are you an experienced Back-End Java Engineer with proven experience in the gambling industry? This is a fantastic opportunity to work on large-scale, high-traffic platforms for a well-known operator, delivering critical back-end services in a modern, distributed environment. This is a fully remote contract (UKbased), initially for 12 months with strong potential to extend. Key Requirements * You have strong commercial experience with Java and frameworks such as Spring/Spring Boot. * You bring solid cloud experience (preferably AWS) and are confident working with Kubernetes and Docker. * Youre skilled with messaging systems and APIs (Kafka, ActiveMQ, JMS, REST, CometD). * You have hands-on experience with databases (DB2, MongoDB, MySQL). * You understand caching te
Contract Back-End Java Engineer Remote up to £650 per day - 12-month contract (with potential extension) Are you an experienced Back-End Java Engineer with proven experience in the gambling industry? This is a fantastic opportunity to work on large-scale, high-traffic platforms for a well-known operator, delivering critical back-end services in a modern, distributed environment. This is a fully remote contract (UKbased), initially for 12 months with strong potential to extend. Key Requirements * You have strong commercial experience with Java and frameworks such as Spring/Spring Boot. * You bring solid cloud experience (preferably AWS) and are confident working with Kubernetes and Docker. * Youre skilled with messaging systems and APIs (Kafka, ActiveMQ, JMS, REST, CometD). * You have hands-on experience with databases (DB2, MongoDB, MySQL). * You understand caching te
Related Jobs
Locations
- Southwark
- The City, City (EC3)
- The City, City (EC4)
- West Fields
- Datchet Common
- Euston
- Felbridge
- The City, City (EC2)
- White Hill
- Charing Cross
- City of London
- Reading
- South East London
- South West London
- Central London
- West End
- Cambridge
- Milton Keynes
- North West London
- East London
- London
- Berkshire
- Cambridgeshire
- Surrey
- Buckinghamshire
- Oxfordshire
- Hampshire
- Bedfordshire
- East Sussex
- West Sussex
- South East
- East Anglia