Date posted
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Locations
Locations
Salaries
Date posted
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Job types
Locations
- Cambourne
- Clerkenwell
- Grays Inn
- Maidenhead Thicket
- Moorgate
- Silverstone
- Southwark
- St James
- The City, City (EC3)
- Tower Hill
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55 Contract API jobs in Hertfordshire + 20 miles
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Software Developer - Full Stack
Software Developer - Full Stack
AWD Online
Hounslow (TW4)
From £35,000 to £40,000 per annum pro rata + Benefits
API Knowledge: Familiarity with RESTful APIs, microservices and integration patterns
API Knowledge: Familiarity with RESTful APIs, microservices and integration patterns
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Senior C# Engineer - AI Native & Agentic Engineering, AWS, Lambda, SQS
Senior C# Engineer - AI Native & Agentic Engineering, AWS, Lambda, SQS
Smart Sourcer Limited
City of London (EC1)
From £700 to £800 per day OUTSIDE IR35
Strong authority across AWS serverless Lambda-first thinking, plus API Gateway, SQS, Step Functions, EventBridge and IAM. * Strong API design sensibility: versioning, documentation, throttling, backwards compatibility and a genuine obsession with DX.
Strong authority across AWS serverless Lambda-first thinking, plus API Gateway, SQS, Step Functions, EventBridge and IAM. * Strong API design sensibility: versioning, documentation, throttling, backwards compatibility and a genuine obsession with DX.
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Proven track record in test automation frameworks (e.g. Jest, API/integration testing, end-to-end testing)
Proven track record in test automation frameworks (e.g. Jest, API/integration testing, end-to-end testing)
G.R.E. Recruitment is delighted to partner with a leading Insurance based company and support them with the hire of x3 Guidewire professionals to work on various projects. These roles are based in London on a hybrid basis (up to twice per week in the office), they are initially for 6 months with potential to extend. Preference will be given to candidates immediately available and up to 2-3 weeks notice. 1. Guidewire Technical Architect - Guidewire XCenters (ClaimCenter, PolicyCenter, BillingCenter) - 8+ yrs exp working as a Guidewire Architect 2. 3. Guidewire Lead Business Analyst - Guidewire XCenters (ClaimCenter, PolicyCenter, BillingCenter) - 6+ yrs exp working in a Guidewire XCenter BA role If you're interested in finding out more, Apply NOW!
G.R.E. Recruitment is delighted to partner with a leading Insurance based company and support them with the hire of x3 Guidewire professionals to work on various projects. These roles are based in London on a hybrid basis (up to twice per week in the office), they are initially for 6 months with potential to extend. Preference will be given to candidates immediately available and up to 2-3 weeks notice. 1. Guidewire Technical Architect - Guidewire XCenters (ClaimCenter, PolicyCenter, BillingCenter) - 8+ yrs exp working as a Guidewire Architect 2. 3. Guidewire Lead Business Analyst - Guidewire XCenters (ClaimCenter, PolicyCenter, BillingCenter) - 6+ yrs exp working in a Guidewire XCenter BA role If you're interested in finding out more, Apply NOW!
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AI Automation Engineer - SC Cleared
AI Automation Engineer - SC Cleared
VIQU IT Recruitment
City of London, London, EC2M 7PY
£300 - 400 per day + Inside IR35
Senior QA / SDET with experience across web, mobile, API, desktop, and cloud testing * Demonstrable success in large-scale automation delivery, including high-volume API automation and measurable cost optimisation * Experience across cross-platform testing (web, mobile, API, desktop) with strong functional and automation coverage
Senior QA / SDET with experience across web, mobile, API, desktop, and cloud testing * Demonstrable success in large-scale automation delivery, including high-volume API automation and measurable cost optimisation * Experience across cross-platform testing (web, mobile, API, desktop) with strong functional and automation coverage
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Strong Python engineering (API design, data pipelines, cloud-native development)
Strong Python engineering (API design, data pipelines, cloud-native development)
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Python Developer - Fully Remote - 6 Month Contract Role
Python Developer - Fully Remote - 6 Month Contract Role
G.R.E. Recruitment Limited
City of London (EC1)
£450 per day
Primary skills - Python, FAST API, React & Containerization (Docker) * Experience with API development, related services, and controllers * Database connectivity modules (preferably with FAST API, SQLAlchemy, or similar
Primary skills - Python, FAST API, React & Containerization (Docker) * Experience with API development, related services, and controllers * Database connectivity modules (preferably with FAST API, SQLAlchemy, or similar
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Execute API security testing to assess authentication, data access, and integration risks. Experience performing API and configuration reviews.
Execute API security testing to assess authentication, data access, and integration risks. Experience performing API and configuration reviews.
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IFS Security Architect Outside IR35
IFS Security Architect Outside IR35
Cathcart Technology
Watford, Hertfordshire, WD17 1EU
£600 - £650 per day
Own and evolve the IFS Cloud security architecture (roles, permission sets, data + API security)
Own and evolve the IFS Cloud security architecture (roles, permission sets, data + API security)
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Java Software Engineer
Java Software Engineer
Sanderson Recruitment
South West London (SW1), SW1
Up to £600 per day + Inside IR-35
REST API development
REST API development
FEATURED
Product Manager - IAM / CIAM
Product Manager - IAM / CIAM
Sanderson Recruitment
City of London (EC1), EC1
£650 - £700 per day + Umbrella engagement
Strong understanding of security concepts (e.g. web/API security, OAuth, IAM)
Strong understanding of security concepts (e.g. web/API security, OAuth, IAM)
FEATURED
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API-driven platform delivery experience
API-driven platform delivery experience
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Solution Architect / Systems Architect / Principal Engineer
Solution Architect / Systems Architect / Principal Engineer
Fractal Systems Ltd
City of London (EC1)
£700 per day Outside IR35
Drive API-first and event-driven architectures.
Drive API-first and event-driven architectures.
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API integration and automation
API integration and automation
FEATURED
Senior Product Owner / Head of Product - Fintech / Payments
Senior Product Owner / Head of Product - Fintech / Payments
Sanderson Recruitment
City of London (EC1), EC1
£95000 - £110000 per annum + Benefits
FinTech / Payments - Growth & Commercial focussed role but someone with strong API and technical knowledge * Own API strategy and enablement, ensuring seamless integration with partner technologies and external devices.
FinTech / Payments - Growth & Commercial focussed role but someone with strong API and technical knowledge * Own API strategy and enablement, ensuring seamless integration with partner technologies and external devices.
FEATURED
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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
Lead Solution Architect
Lead Solution Architect
TurleyWay Limited
Central London (W1)
From £700 to £850 per day inside IR35, Hybrid Working
Are you an experienced Solution Architect looking for an exciting contract opportunity? Would you like to join a market leading PE backed business in a newly created high-profile delivery focused role? Can you demonstrate a track record of delivery across ERP Systems, Data Platforms and Artificial Intelligence Capabilities? Do you have exceptional communication skills and the ability to influence non-technical stakeholders and senior leadership? This an exciting opportunity for an exceptional Solution Architect who will be responsible for designing, shaping, and assuring end-to-end solution architectures across core enterprise platforms, with a primary focus on ERP, data platforms, and AI-enabled solutions. This is a hands-on architecture role, embedded within delivery. The role works closely with Product Owners, Business Analysts, engineers, vendors, and system ...
Are you an experienced Solution Architect looking for an exciting contract opportunity? Would you like to join a market leading PE backed business in a newly created high-profile delivery focused role? Can you demonstrate a track record of delivery across ERP Systems, Data Platforms and Artificial Intelligence Capabilities? Do you have exceptional communication skills and the ability to influence non-technical stakeholders and senior leadership? This an exciting opportunity for an exceptional Solution Architect who will be responsible for designing, shaping, and assuring end-to-end solution architectures across core enterprise platforms, with a primary focus on ERP, data platforms, and AI-enabled solutions. This is a hands-on architecture role, embedded within delivery. The role works closely with Product Owners, Business Analysts, engineers, vendors, and system ...
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We're currently partnering with a leading organisation in the utilities sector that is undergoing significant investment in customer-facing technology and digital transformation. As part of this journey, we're looking to appoint an experienced Solution Architect to join a central architecture function supporting a broad portfolio of business-critical change initiatives. This role sits within the Customer domain and will play a key part in shaping and delivering technology solutions that improve customer experience, support operational excellence, and enable long-term business strategy. The successful candidate will work closely with business stakeholders, delivery teams, engineers, and technical specialists to define end-to-end solutions and provide architectural leadership throughout the delivery lifecycle. What you'll be doing -
We're currently partnering with a leading organisation in the utilities sector that is undergoing significant investment in customer-facing technology and digital transformation. As part of this journey, we're looking to appoint an experienced Solution Architect to join a central architecture function supporting a broad portfolio of business-critical change initiatives. This role sits within the Customer domain and will play a key part in shaping and delivering technology solutions that improve customer experience, support operational excellence, and enable long-term business strategy. The successful candidate will work closely with business stakeholders, delivery teams, engineers, and technical specialists to define end-to-end solutions and provide architectural leadership throughout the delivery lifecycle. What you'll be doing -
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Lead Solution Architect | Contract (6-12 Months) Hybrid UK | Strong Day Rate - 1-2 days onsite in Luton. Working for Airline client. Were looking for an experienced Lead Solution Architect to drive end-to-end solution design across large-scale, mission-critical programmes. You'll work closely with Product, Engineering and Delivery teams, ensuring multiple workstreams align to a single architecture vision while balancing business outcomes, scalability and technical excellence. Key Responsibilities - Define and own solution architecture across complex programmes and multiple product teams - Create architecture roadmaps, standards, guardrails and reusable design patterns - Lead cross-team integration design, data flows and platform alignment - Ensure solutions are scalable, secure, resilient and aligned to enterprise strategy
Lead Solution Architect | Contract (6-12 Months) Hybrid UK | Strong Day Rate - 1-2 days onsite in Luton. Working for Airline client. Were looking for an experienced Lead Solution Architect to drive end-to-end solution design across large-scale, mission-critical programmes. You'll work closely with Product, Engineering and Delivery teams, ensuring multiple workstreams align to a single architecture vision while balancing business outcomes, scalability and technical excellence. Key Responsibilities - Define and own solution architecture across complex programmes and multiple product teams - Create architecture roadmaps, standards, guardrails and reusable design patterns - Lead cross-team integration design, data flows and platform alignment - Ensure solutions are scalable, secure, resilient and aligned to enterprise strategy
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We are seeking an experienced Data Architect to join our Group Technology team on a 6-month contract. You will help realise the value of the immense Connells Group data landscape for the benefit of customers, colleagues and the overall business. You will use your expertise to define, evolve and communicate the existing Estate Agency enterprise data architecture, to democratise safe access to consolidated and unified data, modelled to help engineering teams develop single customer and property views. The priority for this role will be in mapping the existing estate for CRM data, developing the relevant CDMs as part of Fabric Medallion architecture, and establishing robust bulk extract and ingest patterns to enable CRM integration. * CDM Data Architecture Ownership; with direction from the Enterprise Data Architect, define and maintain the organisations CDM data ...
We are seeking an experienced Data Architect to join our Group Technology team on a 6-month contract. You will help realise the value of the immense Connells Group data landscape for the benefit of customers, colleagues and the overall business. You will use your expertise to define, evolve and communicate the existing Estate Agency enterprise data architecture, to democratise safe access to consolidated and unified data, modelled to help engineering teams develop single customer and property views. The priority for this role will be in mapping the existing estate for CRM data, developing the relevant CDMs as part of Fabric Medallion architecture, and establishing robust bulk extract and ingest patterns to enable CRM integration. * CDM Data Architecture Ownership; with direction from the Enterprise Data Architect, define and maintain the organisations CDM data ...
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Contract Data Architect GCP
Contract Data Architect GCP
Crosstide
The City, City of London (EC3), EC3V 3NB
Very competitive day rate
Data Architect / Principal Data Engineer (GCP) Contract: Initial 3 Months - Location: Fully Remote - Status: Outside IR35 - We are looking for a highly experienced Data Architect / Principal Data Engineer with deep, hands-on GCP expertise to support a major data transformation programme within a regulated financial services environment. This is not an advisory role. We need someone who has personally designed, built and owned enterprise-scale GCP data platforms in production and can lead both architecture and delivery. Key Requirements * 7+ years' hands-on experience with Google Cloud Platform (GCP) o BigQuery - o Dataflow - o Pub/Sub - o Python - o APIs and containerised services * Strong data architecture experience, including conceptual, logical and physical data modelling * Experience establishing governance frameworks, metadata management, data quality standards and AI-ready data foundations
Data Architect / Principal Data Engineer (GCP) Contract: Initial 3 Months - Location: Fully Remote - Status: Outside IR35 - We are looking for a highly experienced Data Architect / Principal Data Engineer with deep, hands-on GCP expertise to support a major data transformation programme within a regulated financial services environment. This is not an advisory role. We need someone who has personally designed, built and owned enterprise-scale GCP data platforms in production and can lead both architecture and delivery. Key Requirements * 7+ years' hands-on experience with Google Cloud Platform (GCP) o BigQuery - o Dataflow - o Pub/Sub - o Python - o APIs and containerised services * Strong data architecture experience, including conceptual, logical and physical data modelling * Experience establishing governance frameworks, metadata management, data quality standards and AI-ready data foundations
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Your new company - You will be joining a leading organisation delivering critical financial services and digital transformation initiatives within a highly secure, government-aligned environment. Working through a major global technology partner, you'll contribute to a large-scale programme focused on modernising banking platforms and payment services. Your new role - As a Technical Architect, you will play a key role in shaping and delivering complex architecture solutions across banking and financial services platforms. You'll be responsible for designing scalable, secure, and high-performing systems, with a particular focus on payment integration and modern cloud-native environments. You will work closely with internal teams and third-party vendors to ensure seamless integration across platforms such as product accounting, risk, and financial crime systems.
Your new company - You will be joining a leading organisation delivering critical financial services and digital transformation initiatives within a highly secure, government-aligned environment. Working through a major global technology partner, you'll contribute to a large-scale programme focused on modernising banking platforms and payment services. Your new role - As a Technical Architect, you will play a key role in shaping and delivering complex architecture solutions across banking and financial services platforms. You'll be responsible for designing scalable, secure, and high-performing systems, with a particular focus on payment integration and modern cloud-native environments. You will work closely with internal teams and third-party vendors to ensure seamless integration across platforms such as product accounting, risk, and financial crime systems.
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Senior AI Engineer (SC + NPPV3 Cleared) Location: (Hybrid – flexible office/remote split) Rate: Competitive Contract Day Rate (Dependent on experience) Clearance: Active SC Clearance (Required), NPPV3 (Highly Desirable) The Role - On behalf of our client, we are seeking a Senior AI Engineer to drive the industrialisation of enterprise-grade AI capabilities across their secure cloud environments. In this role, you will bridge the gap between advanced AI research and mission-critical production systems. You will lead the design and deployment of resilient, stateful agentic workflows, scalable RAG architectures, and highly secure interoperability frameworks. This is a hands-on technical role focused on building sovereign, compliant, and autonomous AI solutions that scale. What You’ll Do * Architect Agentic Systems: Design and deploy production-ready multi-agent ecosystems capable ...
Senior AI Engineer (SC + NPPV3 Cleared) Location: (Hybrid – flexible office/remote split) Rate: Competitive Contract Day Rate (Dependent on experience) Clearance: Active SC Clearance (Required), NPPV3 (Highly Desirable) The Role - On behalf of our client, we are seeking a Senior AI Engineer to drive the industrialisation of enterprise-grade AI capabilities across their secure cloud environments. In this role, you will bridge the gap between advanced AI research and mission-critical production systems. You will lead the design and deployment of resilient, stateful agentic workflows, scalable RAG architectures, and highly secure interoperability frameworks. This is a hands-on technical role focused on building sovereign, compliant, and autonomous AI solutions that scale. What You’ll Do * Architect Agentic Systems: Design and deploy production-ready multi-agent ecosystems capable ...
NEWFEATURED
An established professional services organisation is seeking a Full Stack Developer to join its IT team. You'll play a key role in designing and delivering bespoke applications that support internal teams and clients, working within a collaborative, global agile environment. This is a hands-on development role where you'll contribute to building high-quality web solutions, influence technical direction, and help deliver impactful digital products. Key Responsibilities - Develop and maintain full stack web applications - Collaborate with product owners and agile teams to deliver enhancements and new products - Analyse requirements and define technical solutions - Provide guidance on best practices, technologies, and development approaches - Work closely with stakeholders across the business - Contribute to continuous improvement and knowledge sharing within the team
An established professional services organisation is seeking a Full Stack Developer to join its IT team. You'll play a key role in designing and delivering bespoke applications that support internal teams and clients, working within a collaborative, global agile environment. This is a hands-on development role where you'll contribute to building high-quality web solutions, influence technical direction, and help deliver impactful digital products. Key Responsibilities - Develop and maintain full stack web applications - Collaborate with product owners and agile teams to deliver enhancements and new products - Analyse requirements and define technical solutions - Provide guidance on best practices, technologies, and development approaches - Work closely with stakeholders across the business - Contribute to continuous improvement and knowledge sharing within the team
Up to £550 per day (Inside IR35) London (remote with ad-hoc on site) A client of mine is currently looking for an experienced Senior Network Architect to support them on a short-term contract, with extensive experience designing and documenting large-scale Cisco SD-Access solutions. * Demonstrated experience leading the design of Cisco SD-Access solutions within complex, large-scale enterprise environments * Strong hands-on capability across Cisco DNA Center (DNAC), Cisco ISE, and TrustSec, with a solid grounding in Software-Defined Access architectures * Comfortable working at depth with core SDA technologies, including VXLAN and LISP, and applying these within fabric-based enterprise networks * Proven understanding of SD-Access fabric design principles, including segmentation models using Virtual Networks (VN) and Scalable Group Tags (SGT)
Up to £550 per day (Inside IR35) London (remote with ad-hoc on site) A client of mine is currently looking for an experienced Senior Network Architect to support them on a short-term contract, with extensive experience designing and documenting large-scale Cisco SD-Access solutions. * Demonstrated experience leading the design of Cisco SD-Access solutions within complex, large-scale enterprise environments * Strong hands-on capability across Cisco DNA Center (DNAC), Cisco ISE, and TrustSec, with a solid grounding in Software-Defined Access architectures * Comfortable working at depth with core SDA technologies, including VXLAN and LISP, and applying these within fabric-based enterprise networks * Proven understanding of SD-Access fabric design principles, including segmentation models using Virtual Networks (VN) and Scalable Group Tags (SGT)
Related Jobs
Locations
- Cambourne
- Clerkenwell
- Grays Inn
- Maidenhead Thicket
- Moorgate
- Silverstone
- Southwark
- St James
- The City, City (EC3)
- Tower Hill
- City of London
- Central London
- Reading
- West End
- Oxford
- Cambridge
- Farnborough
- Leatherhead
- Luton
- Maidenhead
- London
- Berkshire
- Oxfordshire
- Hertfordshire
- Bedfordshire
- Buckinghamshire
- Cambridgeshire
- Hampshire
- Northamptonshire
- Surrey
- South East
- East Anglia
- East Midlands
- Midlands