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Deep understanding of API-led integrations, middleware, and enterprise data flows.
Deep understanding of API-led integrations, middleware, and enterprise data flows.
)
Full Stack Engineer JavaScript
Full Stack Engineer JavaScript
Staffworx Limited
West London (W10)
market rates, outside IR35, 6 months initial, long term extensions
Design & develop GraphQL API services from schema, supergraph, subgraph design to production integration, ensuring performance, flexibility, and maintainability. * Collaborate in Agile teams, driving API strategy, reviewing pull requests, and improving delivery processes. * Familiarity with testing frameworks (Vitest, Playwright) for both API and end-to-end testing.
Design & develop GraphQL API services from schema, supergraph, subgraph design to production integration, ensuring performance, flexibility, and maintainability. * Collaborate in Agile teams, driving API strategy, reviewing pull requests, and improving delivery processes. * Familiarity with testing frameworks (Vitest, Playwright) for both API and end-to-end testing.
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A market leading client is looking for an Integration Architect who has strong Integration experience with Boomi. As an Integration Architect you will shape, design, and deliver modern integration solutions across a diverse enterprise landscape. This is a pivotal role for someone who thrives on solving complex problems, influencing technology direction, and enabling seamless connectivity across systems, data, and business processes. Responsibilities * Analyse business needs and objectives and provide strategic guidance on integration of IT systems. * Excellent Integration experience using Boomi. * Architect and guide integration patterns across Verint, Appian, and other enterprise platforms. * Communicate and present enterprise architecture vision and recommendations to senior management and stakeholders.
A market leading client is looking for an Integration Architect who has strong Integration experience with Boomi. As an Integration Architect you will shape, design, and deliver modern integration solutions across a diverse enterprise landscape. This is a pivotal role for someone who thrives on solving complex problems, influencing technology direction, and enabling seamless connectivity across systems, data, and business processes. Responsibilities * Analyse business needs and objectives and provide strategic guidance on integration of IT systems. * Excellent Integration experience using Boomi. * Architect and guide integration patterns across Verint, Appian, and other enterprise platforms. * Communicate and present enterprise architecture vision and recommendations to senior management and stakeholders.
The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
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Senior SAP Functional Consultant
Senior SAP Functional Consultant
Stackstudio Digital Ltd.
Birmingham, West Midlands
From £400 to £450 per day
The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
Senior SAP Functional Consultant
Senior SAP Functional Consultant
Stackstudio Digital Ltd.
Leicester, Leicestershire
From £400 to £450 per day
The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
The role requires strong cross module and integration experience, including IDoc, SAP Proxy, and API based integrations, in complex SAP landscapes. Manage and support integrations using IDoc, SAP Proxy, and API (REST/SOAP)
Experience using GCP Cost Explorer, Recommender API, Billing Export
Experience using GCP Cost Explorer, Recommender API, Billing Export
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Mobile Architect (iOS & Android) - £500 Outside
Mobile Architect (iOS & Android) - £500 Outside
Stealth IT Consulting Limited
UK
Up to £500 per day Up to £500 Outside per day
Contract: 12 Months - Day Rate:£500 per day (Outside IR35) Clearance: SC Eligible - Sector:UK Public Sector - Location: Fully Remote (UK-based) Start Date: ASAP - Overview - We are seeking an experienced Mobile Architect to support a large-scale public sector digital transformation programme. The successful candidate will lead mobile solution architecture across iOS and Android, ensuring scalable, secure, and high-performing mobile services. This is a key role within a modern engineering environment, working closely with product teams, developers, and senior stakeholders. Key Responsibilities * Lead the end-to-end mobile architecture across iOS and Android platforms. * Define architectural standards, best practices, and technical direction. * Work closely with development teams to ensure architectural alignment and technical quality.
Contract: 12 Months - Day Rate:£500 per day (Outside IR35) Clearance: SC Eligible - Sector:UK Public Sector - Location: Fully Remote (UK-based) Start Date: ASAP - Overview - We are seeking an experienced Mobile Architect to support a large-scale public sector digital transformation programme. The successful candidate will lead mobile solution architecture across iOS and Android, ensuring scalable, secure, and high-performing mobile services. This is a key role within a modern engineering environment, working closely with product teams, developers, and senior stakeholders. Key Responsibilities * Lead the end-to-end mobile architecture across iOS and Android platforms. * Define architectural standards, best practices, and technical direction. * Work closely with development teams to ensure architectural alignment and technical quality.
FEATURED
Lead SIT/UAT cycles, manage defects, and validate interfaces (IDoc/BAPI/OData/API).
Lead SIT/UAT cycles, manage defects, and validate interfaces (IDoc/BAPI/OData/API).
Familiarity with JSON-based configuration, API specs, and common integration styles (REST, batch files, streaming)
Familiarity with JSON-based configuration, API specs, and common integration styles (REST, batch files, streaming)
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Own the end-to-end lead journey through API integrations, data analysis, and cross-functional collaboration to drive scalable lead acquisition, qualification, and conversion. * Lead Journey & API Integration: Own end-to-end flow- from capture to booking- through robust API integrations, ensuring accurate lead attribution, minimal leakage, faster hand-offs, and improved online booking conversion rates. * Minimum 3-5 years of experience in data science, API integrations, and performance management. * Experience in API integrations and Lead Flow Optimisations.
Own the end-to-end lead journey through API integrations, data analysis, and cross-functional collaboration to drive scalable lead acquisition, qualification, and conversion. * Lead Journey & API Integration: Own end-to-end flow- from capture to booking- through robust API integrations, ensuring accurate lead attribution, minimal leakage, faster hand-offs, and improved online booking conversion rates. * Minimum 3-5 years of experience in data science, API integrations, and performance management. * Experience in API integrations and Lead Flow Optimisations.
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Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn).
Experience with infrastructure-as-code, production-grade Linux environments, and API services (Flask/Gunicorn).
FEATURED
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Manufacturing automation experience in biopharmaceutical Formulation/Fill/Finish or Active Pharmaceutical Ingredient (API) facilities
Manufacturing automation experience in biopharmaceutical Formulation/Fill/Finish or Active Pharmaceutical Ingredient (API) facilities
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Test & AI Evaluation Lead
Test & AI Evaluation Lead
MarkIT Placements
Chilton, Didcot (OX11), OX11
From £550 to £750 per day depending on experience
Oversee automated testing across API and service layers, UI (E2E and accessibility), and infrastructure and deployment workflows.
Oversee automated testing across API and service layers, UI (E2E and accessibility), and infrastructure and deployment workflows.
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Lead React Native Engineer / Engineering manager
Lead React Native Engineer / Engineering manager
Sanderson Recruitment
City of London (EC1), EC1
£600 - £700 per day + Outside IR35
Strong API/integration experience: REST / GraphQL, auth flows, contract design and resilience patterns
Strong API/integration experience: REST / GraphQL, auth flows, contract design and resilience patterns
FEATURED
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API integrations
API integrations
PREMIUM
Role Details - Role / Job Title: Solution Architect - Work Location: London - Role Type: Contracting - Office Requirement: 1 day in office - Role Overview - We are seeking an experienced Solution Architect to lead the design and governance of large-scale, enterprise cloud platforms built on AWS. This role requires deep technical expertise in AWS architecture, Infrastructure as Code (Terraform), CI/CD pipelines, and Python-based automation, combined with strong enterprise architecture, security, and stakeholder leadership skills. The successful candidate will define enterprise cloud strategy, establish architectural standards, and ensure consistent, secure, and scalable solution delivery across multiple business units and delivery teams. Key Responsibilities - Enterprise Architecture & Strategy * Define and own enterprise cloud architecture strategy aligned with business and IT roadmaps
Role Details - Role / Job Title: Solution Architect - Work Location: London - Role Type: Contracting - Office Requirement: 1 day in office - Role Overview - We are seeking an experienced Solution Architect to lead the design and governance of large-scale, enterprise cloud platforms built on AWS. This role requires deep technical expertise in AWS architecture, Infrastructure as Code (Terraform), CI/CD pipelines, and Python-based automation, combined with strong enterprise architecture, security, and stakeholder leadership skills. The successful candidate will define enterprise cloud strategy, establish architectural standards, and ensure consistent, secure, and scalable solution delivery across multiple business units and delivery teams. Key Responsibilities - Enterprise Architecture & Strategy * Define and own enterprise cloud architecture strategy aligned with business and IT roadmaps
Solution Architect - PreSales, Bids, Digital Transformation.
Solution Architect - PreSales, Bids, Digital Transformation.
Sanderson Recruitment
City of London (EC1), EC1
£700 - £800 per day
Strategic Bid Architect / Pre Sales Solution Architect / Bid Solution Architect / Bid Architect - Solutions - This is a pivotal role in shaping, validating, and presenting complex digital, data, and AI-enabled solutions that are commercially competitive, architecturally robust, and operationally deliverable. Acting as the senior solution leader, the role is accountable for designing and governing advanced, cloud-native, and data-driven architectures for strategic, complex, and high-value bids, showcasing our clients digital design ethos and technical excellence. They ensure that all proposals are aligned to customer outcomes, compliant with requirements, and consistent with enterprise standards and delivery capability - delivering winning, sustainable propositions for our client. Working closely with the Growth and Business Development teams from the earliest stages of the ...
Strategic Bid Architect / Pre Sales Solution Architect / Bid Solution Architect / Bid Architect - Solutions - This is a pivotal role in shaping, validating, and presenting complex digital, data, and AI-enabled solutions that are commercially competitive, architecturally robust, and operationally deliverable. Acting as the senior solution leader, the role is accountable for designing and governing advanced, cloud-native, and data-driven architectures for strategic, complex, and high-value bids, showcasing our clients digital design ethos and technical excellence. They ensure that all proposals are aligned to customer outcomes, compliant with requirements, and consistent with enterprise standards and delivery capability - delivering winning, sustainable propositions for our client. Working closely with the Growth and Business Development teams from the earliest stages of the ...
FEATURED
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Experience of API technologies and writing Restful APIs in JSON
Experience of API technologies and writing Restful APIs in JSON
FEATURED
Role / Job Title:Data Solution Designer Data Science - Work Location:Norwich 3 Days (Flexible) Duration of Assignment:06 Months - The Role - The Data Solution Designer Data Science is responsible for designing end to end data science and advanced analytics solutions that translate complex business problems into scalable, secure, and high performance data products. This role bridges business stakeholders, data engineering, data science, and IT architecture teams, ensuring solutions are production ready and aligned with enterprise standards. Your Responsibilities - Solution & Data Model Design - 1. Solution Design & Architecture * Design end to end data science solutions including data ingestion, feature engineering, model development, deployment, and monitoring * Define logical and physical architectures for analytics platforms, ML pipelines, and AI products
Role / Job Title:Data Solution Designer Data Science - Work Location:Norwich 3 Days (Flexible) Duration of Assignment:06 Months - The Role - The Data Solution Designer Data Science is responsible for designing end to end data science and advanced analytics solutions that translate complex business problems into scalable, secure, and high performance data products. This role bridges business stakeholders, data engineering, data science, and IT architecture teams, ensuring solutions are production ready and aligned with enterprise standards. Your Responsibilities - Solution & Data Model Design - 1. Solution Design & Architecture * Design end to end data science solutions including data ingestion, feature engineering, model development, deployment, and monitoring * Define logical and physical architectures for analytics platforms, ML pipelines, and AI products
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Jersey (Relocation Required ) * 12-month contract | Outside IR35 * Public Sector / Healthcare Transformation * Flexible working available - Were recruiting an experienced Solutions Architect for a long-term Outside IR35 contract supporting a high-profile public sector healthcare transformation programme in Jersey. This is a delivery-focused architecture role offering real autonomy, clear scope, and the opportunity to shape end-to-end solutions within a regulated, high-impact environment. Relocation to Jersey is required - What Youll Be Doing * Owning end-to-end solution architecture across applications, integration, data, and infrastructure * Translating enterprise architecture into practical, deliverable solution designs * Working closely with delivery teams across Agile and Waterfall programmes * Producing clear, high-quality architecture and design documentation
Jersey (Relocation Required ) * 12-month contract | Outside IR35 * Public Sector / Healthcare Transformation * Flexible working available - Were recruiting an experienced Solutions Architect for a long-term Outside IR35 contract supporting a high-profile public sector healthcare transformation programme in Jersey. This is a delivery-focused architecture role offering real autonomy, clear scope, and the opportunity to shape end-to-end solutions within a regulated, high-impact environment. Relocation to Jersey is required - What Youll Be Doing * Owning end-to-end solution architecture across applications, integration, data, and infrastructure * Translating enterprise architecture into practical, deliverable solution designs * Working closely with delivery teams across Agile and Waterfall programmes * Producing clear, high-quality architecture and design documentation
PREMIUM
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A consultancy we are working with are looking for a Senior .NET Developer to support and enhance a suite of business critical applications. This is a backend-focused role, and the successful candidate must be able to take ownership quickly and deliver impact from day one. Key Responsibilities * Develop and maintain complex backend systems using C# / .NET Core * Design and support RESTful APIs and microservices * Build and maintain CI/CD pipelines (Azure DevOps, YAML, Terraform) * Deliver integration and data migration solutions - Essential Skills * 10+ years' C# / .NET Core (backend-heavy systems) * Strong Azure experience (Functions, Web Apps, DevOps, CI/CD) * REST APIs and microservices architecture * Experience with complex, data-driven or integration-heavy environments - Desirable * RabbitMQ or Azure Service Bus * React or Angular * ETL / data integration
A consultancy we are working with are looking for a Senior .NET Developer to support and enhance a suite of business critical applications. This is a backend-focused role, and the successful candidate must be able to take ownership quickly and deliver impact from day one. Key Responsibilities * Develop and maintain complex backend systems using C# / .NET Core * Design and support RESTful APIs and microservices * Build and maintain CI/CD pipelines (Azure DevOps, YAML, Terraform) * Deliver integration and data migration solutions - Essential Skills * 10+ years' C# / .NET Core (backend-heavy systems) * Strong Azure experience (Functions, Web Apps, DevOps, CI/CD) * REST APIs and microservices architecture * Experience with complex, data-driven or integration-heavy environments - Desirable * RabbitMQ or Azure Service Bus * React or Angular * ETL / data integration
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Full Stack Engineer - Outisde IR35 up to £525 - Intial 4 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
Full Stack Engineer - Outisde IR35 up to £525 - Intial 4 month contract, high chance of extension - I am recruiting for multiple Full Stack Engineers to help our client build scalable, high-performance applications and contribute across both backend and frontend systems. This role involves working on modern production systems, building APIs and services, and collaborating with cross-functional teams to deliver reliable and user-focused products. Key Responsibilities * Build prototypes and evolve them into scalable, production-ready applications * Develop and maintain backend services and APIs in Node/Python * Contribute to frontend development, building responsive and intuitive user interfaces in React * Design and implement data workflows and system integrations * Work with cloud infrastructure and distributed systems
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Senior Java Developer (Contract) Java | Spring Boot | Kafka | Microservices | Kubernetes | AWS - London (Hybrid) | 912 Months | Competitive Day Rate - We are hiring a Senior Java Developer for a long-term contract within a major financial market infrastructure organisation in London. This role is focused on event-driven microservices, Kafka-based architectures, containerised deployments, and high-performance distributed systems. If your experience is primarily CRUD REST APIs without large-scale distributed systems exposure, this role will not be the right fit. Core Requirements (Must Have) * Strong Core Java development (Java 10+) * Extensive Spring Boot experience * Proven Microservices architecture experience * Hands-on Apache Kafka (producers, consumers, topics, partitions) * Experience building event-driven systems * Docker & Kubernetes in production
Senior Java Developer (Contract) Java | Spring Boot | Kafka | Microservices | Kubernetes | AWS - London (Hybrid) | 912 Months | Competitive Day Rate - We are hiring a Senior Java Developer for a long-term contract within a major financial market infrastructure organisation in London. This role is focused on event-driven microservices, Kafka-based architectures, containerised deployments, and high-performance distributed systems. If your experience is primarily CRUD REST APIs without large-scale distributed systems exposure, this role will not be the right fit. Core Requirements (Must Have) * Strong Core Java development (Java 10+) * Extensive Spring Boot experience * Proven Microservices architecture experience * Hands-on Apache Kafka (producers, consumers, topics, partitions) * Experience building event-driven systems * Docker & Kubernetes in production
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Locations
- Chilton
- Euston
- Harmondsworth
- Hinxton
- Little Stoke
- Moorgate
- Shadwell
- St James
- The City, City (EC2)
- The City, City (EC3)
- City of London
- Manchester
- Leeds
- Bristol
- Norwich
- Birmingham
- Cambridge
- Belfast
- Newcastle Upon Tyne
- Glasgow
- London
- Greater Manchester
- West Yorkshire
- Avon
- Norfolk
- West Midlands
- Cambridgeshire
- Tyne and Wear
- Tyneside
- Berkshire
- South East
- North West
- Scotland
- East Anglia
- Midlands
- South West
- Yorkshire
- North East
- East Midlands
- Northern Ireland