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34 Contract API jobs in St. Albans + 20 miles
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A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
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Azure Solutions Architect Inside IR35
Azure Solutions Architect Inside IR35
Henderson Scott
Euston, NW1 2DU
£700 - £850 per day + INSIDE IR35, Hybrid
Integration design (API standards, naming conventions)
Integration design (API standards, naming conventions)
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As an Associate Software Architect, you'll develop mobile software for web/hybrid interfaces and API backends, influencing organization-wide solutions. * Define API standards and integration patterns for scalable and secure communication.
As an Associate Software Architect, you'll develop mobile software for web/hybrid interfaces and API backends, influencing organization-wide solutions. * Define API standards and integration patterns for scalable and secure communication.
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API Integration
API Integration
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Skills: C#.Net, XML / JSON API's, SC & NPPV3 Clearance
Skills: C#.Net, XML / JSON API's, SC & NPPV3 Clearance
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Strong grasp of databases (SQL/NoSQL) and API integrations
Strong grasp of databases (SQL/NoSQL) and API integrations
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Experience testing interfaces (inbound/outbound), including file-based and API integrations.
Experience testing interfaces (inbound/outbound), including file-based and API integrations.
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Senior Test Analyst - Collateral Management, Algo
Senior Test Analyst - Collateral Management, Algo
Harvey Nash
City of London, London
£600 - £640 per day
Experience testing interfaces (inbound/outbound), including file-based and API integrations.
Experience testing interfaces (inbound/outbound), including file-based and API integrations.
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Integrate M365 using Graph API, EWS, SOAP, and REST. * Hands-on with Microsoft Graph API, EWS, SOAP, and REST for M365 integration.
Integrate M365 using Graph API, EWS, SOAP, and REST. * Hands-on with Microsoft Graph API, EWS, SOAP, and REST for M365 integration.
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Develop, deploy, and monitor cloud solutions using AWS (Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, S3) * Strong grasp of distributed systems, API security (OAuth, API keys, JWT), and Apigee/APIM platforms
Develop, deploy, and monitor cloud solutions using AWS (Lambda, API Gateway, CloudWatch, ECS, ECR, DynamoDB, S3) * Strong grasp of distributed systems, API security (OAuth, API keys, JWT), and Apigee/APIM platforms
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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
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Support end-to-end implementation of privacy management tools, including API integrations, tagging, data inventory automation, and consent signals.
Support end-to-end implementation of privacy management tools, including API integrations, tagging, data inventory automation, and consent signals.
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Enterprise Solution Architect - London Insurance Markets
Enterprise Solution Architect - London Insurance Markets
Sanderson Recruitment
EC1, City of London
£485 - £950 per day + Umbrella Engagement
Senior Solution Architect / Enterprise Solutuion Architect - Our client operate within the London Market insurance industry, recognised for its innovation, scale, and commitment to digital transformation. The organisation is undertaking a multi-year technology modernisation initiative aimed at enhancing core underwriting, claims, and broking platforms - and this role plays a pivotal part in shaping that future. The Opportunity - We've had a brilliant brief for a Senior Solution / Enterprise Architect to join a well-known brand within the London Market. You'll work closely with the Head of Architecture and a talented team of Enterprise and Senior Solution Architects to help define and evolve the organisation's strategic technology roadmap. This is a software and application-focused role, ideal for someone who brings deep London Market insurance domain expertise and a s
Senior Solution Architect / Enterprise Solutuion Architect - Our client operate within the London Market insurance industry, recognised for its innovation, scale, and commitment to digital transformation. The organisation is undertaking a multi-year technology modernisation initiative aimed at enhancing core underwriting, claims, and broking platforms - and this role plays a pivotal part in shaping that future. The Opportunity - We've had a brilliant brief for a Senior Solution / Enterprise Architect to join a well-known brand within the London Market. You'll work closely with the Head of Architecture and a talented team of Enterprise and Senior Solution Architects to help define and evolve the organisation's strategic technology roadmap. This is a software and application-focused role, ideal for someone who brings deep London Market insurance domain expertise and a s
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Fully Onsite in London (EC2Y / Moorgate) International Banking Group - Day Rate Contract - Inside IR35?????? Are you ready to take ownership of cutting-edge data storage solutions across a major international banking group? As a Data Storage Engineer, you'll join a collaborative technical team with responsibility for designing, implementing, configuring and supporting mission-critical storage and backup infrastructure. You'll have the opportunity to deliver high-impact projects, provide technical subject matter expertise, and ensure business data is protected against loss or corruption, all in a progressive, future-focused environment. Key Responsibilities * Manage and maintain block, file, and object data storage systems for business systems and end users. * Provide technical ownership and support for all online storage technologies, including connectivity and backup
Fully Onsite in London (EC2Y / Moorgate) International Banking Group - Day Rate Contract - Inside IR35?????? Are you ready to take ownership of cutting-edge data storage solutions across a major international banking group? As a Data Storage Engineer, you'll join a collaborative technical team with responsibility for designing, implementing, configuring and supporting mission-critical storage and backup infrastructure. You'll have the opportunity to deliver high-impact projects, provide technical subject matter expertise, and ensure business data is protected against loss or corruption, all in a progressive, future-focused environment. Key Responsibilities * Manage and maintain block, file, and object data storage systems for business systems and end users. * Provide technical ownership and support for all online storage technologies, including connectivity and backup
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Sr. Network Engineer (Juniper Mist)
Sr. Network Engineer (Juniper Mist)
IO Associates
AL7, Welwyn Garden City
£450 - £500 per day + Outside IR35
Senior Network Engineer - Juniper Mist & AI Specialist - Location: Welwyn Garden City, UK () Type: 6-Month Outside IR35 Contract - Rate: £500 per day - Experience: 7+ years - Join a global technology solutions partner that excels in delivering enterprise-level digital transformation and workflow automation across industries. Renowned for driving operational excellence through advanced IT service management and system integration, this organization partners with clients to enhance performance, streamline processes, and accelerate innovation through cutting-edge cloud and automation platforms. Step into a role where cutting-edge AI meets enterprise networking excellence. We're seeking a seasoned Senior Network Engineer with deep Juniper expertise and a passion for AI-driven network optimisation. This is your chance to shape next-gen connectivity using Mist AI to deliver
Senior Network Engineer - Juniper Mist & AI Specialist - Location: Welwyn Garden City, UK () Type: 6-Month Outside IR35 Contract - Rate: £500 per day - Experience: 7+ years - Join a global technology solutions partner that excels in delivering enterprise-level digital transformation and workflow automation across industries. Renowned for driving operational excellence through advanced IT service management and system integration, this organization partners with clients to enhance performance, streamline processes, and accelerate innovation through cutting-edge cloud and automation platforms. Step into a role where cutting-edge AI meets enterprise networking excellence. We're seeking a seasoned Senior Network Engineer with deep Juniper expertise and a passion for AI-driven network optimisation. This is your chance to shape next-gen connectivity using Mist AI to deliver
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We have a current opportunity for a C# Full Stack Developer on a contract basis at a well known Investment Bank in the City of London. For further information about this position please apply. * Full stack development with a focus on .NET * Proficiency in ASP.NET Core MVC, C#, and Entity Framework * Strong front-end skills in HTML5, CSS3, JavaScript, and modern frameworks (React, Angular, or Vue.js) * Hands-on development experience with SQL Server or other relational databases * Knowledge of SQL programming and ability to write and simplify complex queries, improve query performance, etc. * Design and implement RESTful APIs * Understanding of DevOps practices and CI/CD pipelines * Experience with cloud technologies (AWS, Azure, GCP * Professional Experience working in Investment banking is preferred
We have a current opportunity for a C# Full Stack Developer on a contract basis at a well known Investment Bank in the City of London. For further information about this position please apply. * Full stack development with a focus on .NET * Proficiency in ASP.NET Core MVC, C#, and Entity Framework * Strong front-end skills in HTML5, CSS3, JavaScript, and modern frameworks (React, Angular, or Vue.js) * Hands-on development experience with SQL Server or other relational databases * Knowledge of SQL programming and ability to write and simplify complex queries, improve query performance, etc. * Design and implement RESTful APIs * Understanding of DevOps practices and CI/CD pipelines * Experience with cloud technologies (AWS, Azure, GCP * Professional Experience working in Investment banking is preferred
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Google SecOps Engineer (SOAR/UEBA) - Outside IR35
Google SecOps Engineer (SOAR/UEBA) - Outside IR35
SF Recruitment (Tech)
Waterloo, SE1
£500 - 700 per day
I am currently assisting a client who operate in a regulated industry, financial services, who are currently embarking a programme of work focused on maturity/designing and implementing security posture utilising SIEM tools such as Google Chronicle & implementing UEBA/SOAR (Security Orchestration, Automation, and Response / User and Entity Behaviour Analytics) built on GCP/Google Cloud so Google SecOps/Security Operations experience is highly desirable. Key Responsibilities; - Enable and validate UEBA alerting within Chronicle SIEM, based on log sources - Deliver a minimum viable UEBA capability with tested detection logic - Provide engineering support to accelerate onboarding of log sources required for UEBA enrichment and detection fidelity - Conduct current state assessment of detection engineering capabilities and log source coverage
I am currently assisting a client who operate in a regulated industry, financial services, who are currently embarking a programme of work focused on maturity/designing and implementing security posture utilising SIEM tools such as Google Chronicle & implementing UEBA/SOAR (Security Orchestration, Automation, and Response / User and Entity Behaviour Analytics) built on GCP/Google Cloud so Google SecOps/Security Operations experience is highly desirable. Key Responsibilities; - Enable and validate UEBA alerting within Chronicle SIEM, based on log sources - Deliver a minimum viable UEBA capability with tested detection logic - Provide engineering support to accelerate onboarding of log sources required for UEBA enrichment and detection fidelity - Conduct current state assessment of detection engineering capabilities and log source coverage
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£260 Per Day - Fully Remote - 12 Month Contract - We’re looking for a Quality Engineer who’s passionate about building robust, reliable software and embedding quality into every stage of the development lifecycle. You might come from a testing or development background, but you’ll have a solid grasp of modern QA practices, automation, and cloud-native architectures. You’ll be confident in spotting issues early, designing test strategies that scale, and collaborating with engineers to deliver high-quality solutions for our customers. What you’ll do * Shape and execute test strategies with QA and engineering teams * Bring testing earlier into the SDLC to catch issues sooner * Use a mix of manual, exploratory and automated testing where it makes sense * Build and maintain automated tests that run reliably in CI/CD
£260 Per Day - Fully Remote - 12 Month Contract - We’re looking for a Quality Engineer who’s passionate about building robust, reliable software and embedding quality into every stage of the development lifecycle. You might come from a testing or development background, but you’ll have a solid grasp of modern QA practices, automation, and cloud-native architectures. You’ll be confident in spotting issues early, designing test strategies that scale, and collaborating with engineers to deliver high-quality solutions for our customers. What you’ll do * Shape and execute test strategies with QA and engineering teams * Bring testing earlier into the SDLC to catch issues sooner * Use a mix of manual, exploratory and automated testing where it makes sense * Build and maintain automated tests that run reliably in CI/CD
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Python Developer - 9-12 Month Contract (Outside IR35)
Python Developer - 9-12 Month Contract (Outside IR35)
Halian Technology Limited
W2, West London
From £450 to £500 per day
Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: 480per day (Outside IR35) Exciting Projects:Work on innovative digital solutions in a start-up environment. Flexible Working:Enjoy a hybrid role with one day a week in London. Collaborative Culture:Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Design Agencylooking forexperiencedPython Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up specialising in events services and design, applyingthe power of their collective imagination to creative, commercial, and cultural challenges for massive enterprises such as Amazon and Google
Location: Hybrid (1 day a week in London, UK) * Contract Duration: 9-12 months * Rate: 480per day (Outside IR35) Exciting Projects:Work on innovative digital solutions in a start-up environment. Flexible Working:Enjoy a hybrid role with one day a week in London. Collaborative Culture:Be part of a talented, supportive team that values your input. We are recruiting on behalf of an innovative Design Agencylooking forexperiencedPython Developers. This is an excellent opportunity for experienced developers eager to work on exciting projects in a dynamic and fast-paced environment. Our client is a rapidly expanding start-up specialising in events services and design, applyingthe power of their collective imagination to creative, commercial, and cultural challenges for massive enterprises such as Amazon and Google
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Data Migration Engineer - CRM - Remote - Outside IR35
Data Migration Engineer - CRM - Remote - Outside IR35
The Bridge (IT Recruitment) Limited
The Borough, SE1 0AA
£400 - 500 per day + None
This is a fantastic opportunity to work as a Data Migration Engineer for a publishing company, on a remote contract, initially for 3 months and outside IR35. This Data Migration Engineer will join a team, responsible for the migration 6 CRMs to 1 new CRM and migrating 20 million rows of data. * CRM migration * APIs * Json * XML * Low code * Airtable (desirable) If you do have the relevant skills for this Data Migration Engineer contract, please do apply.
This is a fantastic opportunity to work as a Data Migration Engineer for a publishing company, on a remote contract, initially for 3 months and outside IR35. This Data Migration Engineer will join a team, responsible for the migration 6 CRMs to 1 new CRM and migrating 20 million rows of data. * CRM migration * APIs * Json * XML * Low code * Airtable (desirable) If you do have the relevant skills for this Data Migration Engineer contract, please do apply.
Privacy Technologist / Tech Lead Consultant, contract, outside IR35, London Hybrid - You'll serve as the bridge between privacy compliance, engineering delivery and architecture governance ensuring privacy principles are implemented effectively throughout the software development lifecycle. This position requires a unique combination of technical depth, regulatory understanding, and agile delivery experience. You'll help turn high-level regulatory and policy requirements into concrete, testable technical stories and controls, directly influencing how privacy-by-design is Embedded in digital products and systems. Responsibilities - Privacy-by-Design in Agile Delivery * Integrate privacy requirements directly into Agile Release Trains (ARTs) and delivery squads, ensuring privacy is an integral part of feature and system design.
Privacy Technologist / Tech Lead Consultant, contract, outside IR35, London Hybrid - You'll serve as the bridge between privacy compliance, engineering delivery and architecture governance ensuring privacy principles are implemented effectively throughout the software development lifecycle. This position requires a unique combination of technical depth, regulatory understanding, and agile delivery experience. You'll help turn high-level regulatory and policy requirements into concrete, testable technical stories and controls, directly influencing how privacy-by-design is Embedded in digital products and systems. Responsibilities - Privacy-by-Design in Agile Delivery * Integrate privacy requirements directly into Agile Release Trains (ARTs) and delivery squads, ensuring privacy is an integral part of feature and system design.
Airtable Developer - Remote - Outside IR35
Airtable Developer - Remote - Outside IR35
The Bridge (IT Recruitment) Limited
The Borough, SE1 0AA
£450 - 500 per day
This is a fantastic opportunity to work as an Airtime Developer on a long term contract, outside IR35, on a remote basis. This Airtable Developer will be responsible for migrating 20 million rows of data and 6 CRMs into 1 CRM. * Airtable * APIs * AI * Databases If you do have the relevant experience for this Airtable Developer position, please do apply.
This is a fantastic opportunity to work as an Airtime Developer on a long term contract, outside IR35, on a remote basis. This Airtable Developer will be responsible for migrating 20 million rows of data and 6 CRMs into 1 CRM. * Airtable * APIs * AI * Databases If you do have the relevant experience for this Airtable Developer position, please do apply.
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Front End Developer
Front End Developer
Sanderson Government and Defence
EC1, City of London
£400 - £500 per day + outside IR35
Details - Clearance required: SC Cleared - IR35 Status: Outside IR35 - Start date: 01/12/2025 - Pay rate: 400-500/d - We are forming a new Data Team to deliver a unified, user-friendly interface that consolidates dashboards, reports, and analytical outputs from across the organisation. This 'single pane of glass' will serve as the central hub for stakeholders to explore data, monitor performance, and make informed decisions. As the Front-End Developer, you will play a pivotal role in designing and building this interface from the ground up. You'll work closely with Data Analysts, Data Scientists, Engineers, and Business Analysts to understand their outputs and translate them into intuitive, dynamic visual experiences. Your work will directly influence how data is consumed and acted upon across the organisation. Responsibilities
Details - Clearance required: SC Cleared - IR35 Status: Outside IR35 - Start date: 01/12/2025 - Pay rate: 400-500/d - We are forming a new Data Team to deliver a unified, user-friendly interface that consolidates dashboards, reports, and analytical outputs from across the organisation. This 'single pane of glass' will serve as the central hub for stakeholders to explore data, monitor performance, and make informed decisions. As the Front-End Developer, you will play a pivotal role in designing and building this interface from the ground up. You'll work closely with Data Analysts, Data Scientists, Engineers, and Business Analysts to understand their outputs and translate them into intuitive, dynamic visual experiences. Your work will directly influence how data is consumed and acted upon across the organisation. Responsibilities
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Oracle Revenue Management Production Support Service Engineer
Oracle Revenue Management Production Support Service Engineer
DCV Technologies Limited
SE1, South East London
From £400 to £450 per day
Position Overview - We are seeking a skilled Service Engineer to provide comprehensive production support for Oracle Revenue Management, Receivables, and Intercompany processes. This role requires both financial accounting expertise and technical troubleshooting capabilities to ensure revenue recognition compliance and seamless system operations. Key Responsibilities - Revenue Recognition & Compliance - Support ASC 606/IFRS 15 revenue recognition principles in production systems - Troubleshoot and maintain Revenue Contracts, Performance Obligations, and Standalone Selling Price (SSP) calculations - Resolve issues with Revenue Deferrals, Revenue Allocations, and Adjustments - Ensure revenue compliance through Multi-Currency and Multi-GAAP Reporting - Assist with Deferred Revenue and Unbilled Revenue Accruals processing - Receive, analyze, and prioritize related support
Position Overview - We are seeking a skilled Service Engineer to provide comprehensive production support for Oracle Revenue Management, Receivables, and Intercompany processes. This role requires both financial accounting expertise and technical troubleshooting capabilities to ensure revenue recognition compliance and seamless system operations. Key Responsibilities - Revenue Recognition & Compliance - Support ASC 606/IFRS 15 revenue recognition principles in production systems - Troubleshoot and maintain Revenue Contracts, Performance Obligations, and Standalone Selling Price (SSP) calculations - Resolve issues with Revenue Deferrals, Revenue Allocations, and Adjustments - Ensure revenue compliance through Multi-Currency and Multi-GAAP Reporting - Assist with Deferred Revenue and Unbilled Revenue Accruals processing - Receive, analyze, and prioritize related support
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Software Engineer - JavaScript / React / Typescript / Node
Software Engineer - JavaScript / React / Typescript / Node
Inspire People
Central London, London, WC2N 5DN
£600 - £700 per day + Inside IR35
Experience with building and maintaining RESTful API's using Node.js. Developing and maintaining applications in serverless environments using distributed architecture and AWS tools including Lambda, API Gateway, S3, Cognito & RDS.
Experience with building and maintaining RESTful API's using Node.js. Developing and maintaining applications in serverless environments using distributed architecture and AWS tools including Lambda, API Gateway, S3, Cognito & RDS.