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866 API jobs in South East + 20 miles
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Technical Product Manager API SaaS
Technical Product Manager API SaaS
Client Server
Shoreditch, East London (E1), EC2A
£95000 - £130000 per annum + benefits
You'll be embedded within delivery teams, UX and engineering and utilise your knowledge of software development to make trade-offs, steward the delivery process and close the gaps in requirements including producing technical documentation along with wireframes and API scaffolding where appropriate. Apply now to find out more about this Technical Product Manager (API SaaS) opportunity.
You'll be embedded within delivery teams, UX and engineering and utilise your knowledge of software development to make trade-offs, steward the delivery process and close the gaps in requirements including producing technical documentation along with wireframes and API scaffolding where appropriate. Apply now to find out more about this Technical Product Manager (API SaaS) opportunity.
PREMIUM
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Senior Test Analyst (API & Integration Testing) - Contract
Senior Test Analyst (API & Integration Testing) - Contract
Harvey Nash
Milton Keynes (MK1)
£350 - £400 per day
Our customer, a leading automotive organisation, is seeking an experienced Senior Test Analyst to support a major transformation programme involving complex system integrations, data migration activities and API-driven applications. This is a hands-on role requiring strong experience across API testing, manual testing and integration testing. * Strong commercial experience in API Testing * Hands-on experience using Postman for API validation and testing
Our customer, a leading automotive organisation, is seeking an experienced Senior Test Analyst to support a major transformation programme involving complex system integrations, data migration activities and API-driven applications. This is a hands-on role requiring strong experience across API testing, manual testing and integration testing. * Strong commercial experience in API Testing * Hands-on experience using Postman for API validation and testing
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Principle Java Engineer
Principle Java Engineer
Profile 29
South East London (SE1)
From £70,000 to £90,000 per annum + benefits + hybrid (or remote) work
Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public-sector clients build secure, scalable, and resilient digital services. Profile 29 recruitment keywords: Java software engineer object-oriented design OOD Camunda BPMN DMN Spring Boot REST API microservice architecture Docker Kubernetes containerisation orchestration Git CI/CD pipelines automated testing frameworks Kafka RabbitMQ Security authentication integration patterns enterprise systems agile digital transformation automation Java developer Camunda developer Zeebe Cloud AWS Azure GCP Terraform Helm process automation agentic AI artificial intelligence security clearance SC DV eDV London home based hybrid lead senior manager manage
Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public-sector clients build secure, scalable, and resilient digital services. Profile 29 recruitment keywords: Java software engineer object-oriented design OOD Camunda BPMN DMN Spring Boot REST API microservice architecture Docker Kubernetes containerisation orchestration Git CI/CD pipelines automated testing frameworks Kafka RabbitMQ Security authentication integration patterns enterprise systems agile digital transformation automation Java developer Camunda developer Zeebe Cloud AWS Azure GCP Terraform Helm process automation agentic AI artificial intelligence security clearance SC DV eDV London home based hybrid lead senior manager manage
FDE, Forward Deployed Engineer, TypeScript, Node.JS, API's, FinTech, London, Terraform
FDE, Forward Deployed Engineer, TypeScript, Node.JS, API's, FinTech, London, Terraform
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C# / .NET SENIOR SOFTWARE ENGINEER (AWS)
C# / .NET SENIOR SOFTWARE ENGINEER (AWS)
Secure Recruitment Ltd
East London (E1)
Up to £90,000 per annum + Benefits (Hybrid Working)
System & API Design: Strong Database Architecture Skills & Experience Designing Patterns that make Integrations Fast, Reliable & Elegant. Searches: Software Engineer / AWS / Backend Engineer /Integration Systems Architect /Data Pipeline Engineer /Senior AWS Cloud Engineer /Backend Technical Lead / Engineering Lead /Senior Software Engineer /Senior Backend Engineer /Principal Platform Engineer /Lead C# Developer / AI / API Design / API / LLMs / Artificial Intelligence
System & API Design: Strong Database Architecture Skills & Experience Designing Patterns that make Integrations Fast, Reliable & Elegant. Searches: Software Engineer / AWS / Backend Engineer /Integration Systems Architect /Data Pipeline Engineer /Senior AWS Cloud Engineer /Backend Technical Lead / Engineering Lead /Senior Software Engineer /Senior Backend Engineer /Principal Platform Engineer /Lead C# Developer / AI / API Design / API / LLMs / Artificial Intelligence
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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 Full Stack Developer (TypeScript / Vue.js / C# / .NET) Fully Remote (UK-based) Contract Outside IR35 - Long-Term Contract - Competitive Day Rate - Were working with a well-established organisation undergoing a major platform transformation programme, and theyre looking to add an experienced Full Stack Developer to the team. This role will suit someone who enjoys owning features end-to-end, with strong frontend expertise while remaining comfortable working across APIs, databases, and backend services in a modern environment. What Youll Be Doing * Developing and enhancing customer-facing platforms and transactional systems * Building modern applications using Vue.js and TypeScript * Working closely with product, QA, and engineering teams to deliver new features * Investigating and resolving production issues across frontend, APIs, and databases
Senior Full Stack Developer (TypeScript / Vue.js / C# / .NET) Fully Remote (UK-based) Contract Outside IR35 - Long-Term Contract - Competitive Day Rate - Were working with a well-established organisation undergoing a major platform transformation programme, and theyre looking to add an experienced Full Stack Developer to the team. This role will suit someone who enjoys owning features end-to-end, with strong frontend expertise while remaining comfortable working across APIs, databases, and backend services in a modern environment. What Youll Be Doing * Developing and enhancing customer-facing platforms and transactional systems * Building modern applications using Vue.js and TypeScript * Working closely with product, QA, and engineering teams to deliver new features * Investigating and resolving production issues across frontend, APIs, and databases
FS React Native Developer - Trading London Outside IR35
FS React Native Developer - Trading London Outside IR35
Transparent Technology
London
£450 - £500 per day
Full-Stack Developer (React Native / Java) | London Hybrid | FinTech | Outside IR35 | React, React Native, Java, AWS | £450-500/day - A growing financial technology company is scaling its engineering team as it builds the next generation of modern web and mobile products for global users. With continued investment into digital platforms and infrastructure, they are looking for experienced Full-Stack Developers to support a major product and technology transformation programme. This role will focus on building scalable applications using React or React Native alongside backend services and APIs using Java. You'll work across frontend architecture, integrations, CI/CD pipelines, microservices, and cloud-native systems, helping deliver secure, high-performance products in a collaborative engineering environment. * 6+ years of full-stack engineering experience
Full-Stack Developer (React Native / Java) | London Hybrid | FinTech | Outside IR35 | React, React Native, Java, AWS | £450-500/day - A growing financial technology company is scaling its engineering team as it builds the next generation of modern web and mobile products for global users. With continued investment into digital platforms and infrastructure, they are looking for experienced Full-Stack Developers to support a major product and technology transformation programme. This role will focus on building scalable applications using React or React Native alongside backend services and APIs using Java. You'll work across frontend architecture, integrations, CI/CD pipelines, microservices, and cloud-native systems, helping deliver secure, high-performance products in a collaborative engineering environment. * 6+ years of full-stack engineering experience
Solutions Engineer / FDE Python AI Hypergrowth £180k+
Solutions Engineer / FDE Python AI Hypergrowth £180k+
Transparent Technology
London
£150000 - £180000 per annum + bens, equity
FDE / Customer Engineer | London (5 Days Onsite) | Conversational AI / Enterprise SaaS | Hypergrowth AI Startup | Python, APIs, Integrations, LLMs | £150k-£180k + Equity + Benefits - A hypergrowth AI company is building enterprise-grade conversational AI agents used by some of the world's largest brands to automate and transform customer experience across voice, chat, email, and SMS. Backed by top-tier investors and scaling aggressively, they are now building a dedicated technical delivery function responsible for deploying AI agents into complex enterprise environments. This role sits at the intersection of engineering, AI workflows, and customer delivery, helping enterprise customers launch production-grade AI systems that drive measurable business impact. They are looking for technical, customer-facing engineers with experience delivering complex B2B SaaS solutions ...
FDE / Customer Engineer | London (5 Days Onsite) | Conversational AI / Enterprise SaaS | Hypergrowth AI Startup | Python, APIs, Integrations, LLMs | £150k-£180k + Equity + Benefits - A hypergrowth AI company is building enterprise-grade conversational AI agents used by some of the world's largest brands to automate and transform customer experience across voice, chat, email, and SMS. Backed by top-tier investors and scaling aggressively, they are now building a dedicated technical delivery function responsible for deploying AI agents into complex enterprise environments. This role sits at the intersection of engineering, AI workflows, and customer delivery, helping enterprise customers launch production-grade AI systems that drive measurable business impact. They are looking for technical, customer-facing engineers with experience delivering complex B2B SaaS solutions ...
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Senior Product Engineer, Full Stack - Energy
Senior Product Engineer, Full Stack - Energy
MFK Recruitment Ltd
Piccadilly, Central London (W1), W1S 4NS
From £70,000 to £95,000 per annum
£70,000 to £95,000 - Permanent - London, hybrid - The opportunity - Our client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer-facing software in the energy market. Operating in a complex, high-value sector, the business is combining technology, data, and product thinking to modernise an area of the energy industry that has historically been underserved by great software. We have already placed 3 people into the business and are pleased to be supporting them again on this important hire. This is a genuinely exciting opportunity for a frontend-strong engineer who wants real ownership, autonomy, and the chance to build products from scratch. They are looking for someone with strong React and TypeScript capability, alongside solid backend exposure across Python, APIs, and databases.
£70,000 to £95,000 - Permanent - London, hybrid - The opportunity - Our client is hiring a Senior Product Engineer, Full Stack, to help build the next generation of customer-facing software in the energy market. Operating in a complex, high-value sector, the business is combining technology, data, and product thinking to modernise an area of the energy industry that has historically been underserved by great software. We have already placed 3 people into the business and are pleased to be supporting them again on this important hire. This is a genuinely exciting opportunity for a frontend-strong engineer who wants real ownership, autonomy, and the chance to build products from scratch. They are looking for someone with strong React and TypeScript capability, alongside solid backend exposure across Python, APIs, and databases.
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Job Description - Please note this posting is to advertise potential job opportunities. This exact role may not be open today but could open in the near future. When you apply, a Cisco representative may contact you directly if a relevant position opens. Start Date: as soon as possible - Location: Feltham, United Kingdom (Hybrid work approach, working from the Feltham office 1-2 days per week.) Meet the Team - We at Cisco are looking for a Site Reliability Engineer, with a passion for technology and solid academic foundations in analytical disciplines. Cisco is a strong advocate of using its own enterprise networking, data center, collaboration products, and solutions internally; Cisco IT deploys all these technologies the result being that Cisco IT accrues a great deal of experience in how to design, deploy, operate, and automate these solutions within a large global enterprise.
Job Description - Please note this posting is to advertise potential job opportunities. This exact role may not be open today but could open in the near future. When you apply, a Cisco representative may contact you directly if a relevant position opens. Start Date: as soon as possible - Location: Feltham, United Kingdom (Hybrid work approach, working from the Feltham office 1-2 days per week.) Meet the Team - We at Cisco are looking for a Site Reliability Engineer, with a passion for technology and solid academic foundations in analytical disciplines. Cisco is a strong advocate of using its own enterprise networking, data center, collaboration products, and solutions internally; Cisco IT deploys all these technologies the result being that Cisco IT accrues a great deal of experience in how to design, deploy, operate, and automate these solutions within a large global enterprise.
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Enterprise integration patterns (API, event-driven, messaging)
Enterprise integration patterns (API, event-driven, messaging)
FEATURED
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Integration Architect (SOA / Cloud) - URGENT
Integration Architect (SOA / Cloud) - URGENT
Hays
Oxford (OX1), OX1 2DN
Up to £750.0 per day + £750 Per Day
Throughout the assignment, you will develop the next level of architectural detail, diagrams, logical models, communication patterns, service contracts, API standards and integration principles.
Throughout the assignment, you will develop the next level of architectural detail, diagrams, logical models, communication patterns, service contracts, API standards and integration principles.
Lead Integration Architect (SOA / Cloud)
Lead Integration Architect (SOA / Cloud)
Hays
Oxford (OX1), OX1 2DN
£680.0 - £700.0 per day + Paying between £680 - £700 Per Day
Throughout the assignment, you will develop the next level of architectural detail, diagrams, logical models, communication patterns, service contracts, API standards and integration principles.
Throughout the assignment, you will develop the next level of architectural detail, diagrams, logical models, communication patterns, service contracts, API standards and integration principles.
Architecture: Event-driven systems, microservices, API-first design
Architecture: Event-driven systems, microservices, API-first design
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Senior Technical Lead
Senior Technical Lead
Nextech Group Limited
City of London (EC1)
£85000 - £90000 per annum + Great benefits
Build foundational REST API integrations and webhook-driven automations. Build and maintain Azure middleware (Logic Apps, API Management, Service Bus) as IaC via Terraform through a CI/CD pipeline. * 5+ years hands-on API integration and platform implementation - building, not configuration support or consulting * Greenfield implementation experience with at least two of: HaloPSA, HubSpot, Sage Intacct, NinjaOne RMM, 3CX, Microsoft 365 / Graph API * REST API design - webhooks, OAuth, JSON transformation, event-driven architecture
Build foundational REST API integrations and webhook-driven automations. Build and maintain Azure middleware (Logic Apps, API Management, Service Bus) as IaC via Terraform through a CI/CD pipeline. * 5+ years hands-on API integration and platform implementation - building, not configuration support or consulting * Greenfield implementation experience with at least two of: HaloPSA, HubSpot, Sage Intacct, NinjaOne RMM, 3CX, Microsoft 365 / Graph API * REST API design - webhooks, OAuth, JSON transformation, event-driven architecture
Integration architecture: microservices, API gateways, event-driven architectures, event brokers (Kafka), queues - handling 120+ integration points across systems and legacy stacks API Development & Integration - Strong expertise in API lifecycle design usingOpenAPIspecifications (OAS) - can read and write API specs - TMF Open API
Integration architecture: microservices, API gateways, event-driven architectures, event brokers (Kafka), queues - handling 120+ integration points across systems and legacy stacks API Development & Integration - Strong expertise in API lifecycle design usingOpenAPIspecifications (OAS) - can read and write API specs - TMF Open API
)
Strong understanding of API-driven architectures, event-driven systems, and integration patterns
Strong understanding of API-driven architectures, event-driven systems, and integration patterns
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Solutions Architect, Legal Technology
Solutions Architect, Legal Technology
Brimstone Consulting
City of London (EC2)
From £90,000 to £110,000 per annum High bonus and strong benefits pack
Strong experience with API integrations (REST, JSON, OAuth, event-driven architecture)
Strong experience with API integrations (REST, JSON, OAuth, event-driven architecture)
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Enterprise system integrations and API design
Enterprise system integrations and API design
)
You'll design end-to-end GenAI systems from RAG pipelines and agent orchestration to production-grade API integrations and establish the reusable patterns and frameworks that make every subsequent engagement faster. Design production GenAI applications from prototype through scale data pipelines, model orchestration, API integrations, infrastructure.
You'll design end-to-end GenAI systems from RAG pipelines and agent orchestration to production-grade API integrations and establish the reusable patterns and frameworks that make every subsequent engagement faster. Design production GenAI applications from prototype through scale data pipelines, model orchestration, API integrations, infrastructure.
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Solutions Architect
Solutions Architect
Solus Accident Repair Centres
North London, London
GBP £50,000.00/Yr. - GBP £65,000.00/Yr.
Deep knowledge of modern enterprise patterns, SaaS adoption, API and event based integrations and resilience approaches.
Deep knowledge of modern enterprise patterns, SaaS adoption, API and event based integrations and resilience approaches.
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The Microsoft Entra ID Architect is responsible for defining the target state architecture for enterprise identity using Microsoft Entra ID, with a strong focus on Identity Governance, Secure Access, and API driven provisioning. Design API first provisioning patterns using - Microsoft Graph API Proven architecture experience with Graph API, SCIM, Lifecycle Workflows.
The Microsoft Entra ID Architect is responsible for defining the target state architecture for enterprise identity using Microsoft Entra ID, with a strong focus on Identity Governance, Secure Access, and API driven provisioning. Design API first provisioning patterns using - Microsoft Graph API Proven architecture experience with Graph API, SCIM, Lifecycle Workflows.
Champion the use of strategic platforms such as ENSEK Ignition and shared integration/API frameworks.
Champion the use of strategic platforms such as ENSEK Ignition and shared integration/API frameworks.
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API Gateways
API Gateways
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