Date posted
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Locations
Locations
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Date posted
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10 API jobs in South East London + 20 miles
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Knowledge in JavaScript, HTML, CSS and understanding of CI/CD, REST API
Knowledge in JavaScript, HTML, CSS and understanding of CI/CD, REST API
PREMIUM
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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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T24 Technical Specialist (Temenos Transact)
T24 Technical Specialist (Temenos Transact)
Hireful
Central London, London
£66K Basic + Bonus + Benefits package
We are seeking an experienced T24 Technical Specialist to join a dynamic international banking technology team in Central London. This is an excellent opportunity for a technically strong professional with deep expertise in Temenos Transact (T24) to play a key role in supporting, enhancing, and evolving a critical core banking platform. This is an in-house, end client role with exceptional career security, progression & stability. Location: Central London (Hybrid: 4 days office / 1 day home) Salary: £66,000 per annum starting salary + bonus & very good corporate bank benefits package - Job title: Temenos Transact (T24) Systems Developer. The Role - You will act as a subject matter expert for T24, ensuring smooth day-to-day operations, driving system improvements, and supporting integrations across the bank’s IT landscape.
We are seeking an experienced T24 Technical Specialist to join a dynamic international banking technology team in Central London. This is an excellent opportunity for a technically strong professional with deep expertise in Temenos Transact (T24) to play a key role in supporting, enhancing, and evolving a critical core banking platform. This is an in-house, end client role with exceptional career security, progression & stability. Location: Central London (Hybrid: 4 days office / 1 day home) Salary: £66,000 per annum starting salary + bonus & very good corporate bank benefits package - Job title: Temenos Transact (T24) Systems Developer. The Role - You will act as a subject matter expert for T24, ensuring smooth day-to-day operations, driving system improvements, and supporting integrations across the bank’s IT landscape.
FEATURED
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81357 - Power System & Product Development Engineer
81357 - Power System & Product Development Engineer
CBSbutler Holdings Limited
City of London (EC1)
bonus
Power System & Product Development Engineer - London - Hybrid Salary: £80,574 + 3% bonus - We are seeking a Power System & Product Development Engineer to support the development of a smarter, more flexible electricity network. This role combines power systems engineering with digital product development, focusing on building tools that support flexible connections, DER integration, and DERMS operations across the network. Responsibilities * Lead development of smart grid digital tools supporting flexible connections and DERMS. * Perform power system studies (thermal, voltage, fault level) to identify network constraints. * Develop Python-based tools, data pipelines, dashboards, and APIs. * Use GitHub for version control and collaborative development. * Work with teams across DSO, Planning, Operations, and IT, as well as external partners.
Power System & Product Development Engineer - London - Hybrid Salary: £80,574 + 3% bonus - We are seeking a Power System & Product Development Engineer to support the development of a smarter, more flexible electricity network. This role combines power systems engineering with digital product development, focusing on building tools that support flexible connections, DER integration, and DERMS operations across the network. Responsibilities * Lead development of smart grid digital tools supporting flexible connections and DERMS. * Perform power system studies (thermal, voltage, fault level) to identify network constraints. * Develop Python-based tools, data pipelines, dashboards, and APIs. * Use GitHub for version control and collaborative development. * Work with teams across DSO, Planning, Operations, and IT, as well as external partners.
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Senior Solutions Engineer
Senior Solutions Engineer
SCALERS GROUP LIMITED
The City, City of London (EC2), EC3V
From £80,000 to £90,000 per annum
UK, Remote - Scalers HQ is proud to be partnering with an innovative SaaS FinTech & Payments business in the UK. The SaaS platform our client has built takes away a lot of pain points of payment fragmentation. Were looking for a Senior Solution Engineer, ideally with SaaS or Payments background to contribute towards ambitious growth plans across EMEA. This is an exciting time to join our FinTech partner, and youll join a scaling a team that are rapidly growing. Responsibilities * Communicate with C-suite and senior leaders across commercial and tech to support them in building incredible experiences for their customers * Writing integration plans and sample code for sellers to assist them in implementing their own personalised integration * Lead technical discovery and solution design for global enterprises with complex requirements. * Mentor new & junior members
UK, Remote - Scalers HQ is proud to be partnering with an innovative SaaS FinTech & Payments business in the UK. The SaaS platform our client has built takes away a lot of pain points of payment fragmentation. Were looking for a Senior Solution Engineer, ideally with SaaS or Payments background to contribute towards ambitious growth plans across EMEA. This is an exciting time to join our FinTech partner, and youll join a scaling a team that are rapidly growing. Responsibilities * Communicate with C-suite and senior leaders across commercial and tech to support them in building incredible experiences for their customers * Writing integration plans and sample code for sellers to assist them in implementing their own personalised integration * Lead technical discovery and solution design for global enterprises with complex requirements. * Mentor new & junior members
Join our team here at StepStone and youll be responsible for providing technical leadership to all engineering and development areas across your domain, developing and executing an engineering strategy aligned to the portfolio and global tech strategies. Working in the Design and Platform Performance domain, you willlead the technology side of web and mobile analytics for a platform with over 50 million visits each month, deliver the best user experiences and personalisation for talent and talent seekers. We built in-house large scale tracking platform, powered by Tealium, Kafka and Adobe Analytics, and successfully rolled it out to 10 of our brands. Along with the tracking we are owners of our AB testing tool Optimizely, our in-house Design System Genesys and Frontend Framework, which when put together powers the product development at scale using a data driven ...
Join our team here at StepStone and youll be responsible for providing technical leadership to all engineering and development areas across your domain, developing and executing an engineering strategy aligned to the portfolio and global tech strategies. Working in the Design and Platform Performance domain, you willlead the technology side of web and mobile analytics for a platform with over 50 million visits each month, deliver the best user experiences and personalisation for talent and talent seekers. We built in-house large scale tracking platform, powered by Tealium, Kafka and Adobe Analytics, and successfully rolled it out to 10 of our brands. Along with the tracking we are owners of our AB testing tool Optimizely, our in-house Design System Genesys and Frontend Framework, which when put together powers the product development at scale using a data driven ...
PREMIUM
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Principle Java Engineer
Principle Java Engineer
Profile 29
South East London (SE1)
From £65,000 to £75,000 per annum + benefits + hybrid home working
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
Principle Java Engineer
Principle Java Engineer
Profile 29
South East London (SE1)
From £65,000 to £75,000 per annum + benefits + hybrid home working
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
Principle Java Engineer
Principle Java Engineer
Profile 29
South East London (SE1)
From £65,000 to £75,000 per annum + benefits + hybrid home working
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
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Head of Quality Engineering
Head of Quality Engineering
Infoplus Technologies UK Ltd
City of London (EC3M)
From £650 to £700 per day
API Automation (REST Assured, Karate, Postman)
API Automation (REST Assured, Karate, Postman)
27 exact matches jobs are outside your preferred location
Senior Android Developer – Kotlin / Mobile Applications
Senior Android Developer – Kotlin / Mobile Applications
Intelligent Talent Solutions Ltd
Bracknell (RG12)
From £68,000 to £88,000 per annum Pension, staff discounts, medical
Implement robust REST API integrations
Implement robust REST API integrations
Assist with API integration and monitoring using API Management platforms. * Understanding of WAF and API security basics.
Assist with API integration and monitoring using API Management platforms. * Understanding of WAF and API security basics.
FEATURED
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Network Automation Engineer Specialist (telecoms/ network)
Network Automation Engineer Specialist (telecoms/ network)
Talent Locker
Reading (RG1)
£60000 - £65000 per annum
Experience with API management platforms (Apigee, Kong, OpenShift API Management) and Web Application Firewalls (WAF) is highly desirable. * Implement and manage API Management solutions and Web Application Firewalls (WAF). * Experience with API management (Apigee, Kong, OpenShift API Management) and API lifecycle.
Experience with API management platforms (Apigee, Kong, OpenShift API Management) and Web Application Firewalls (WAF) is highly desirable. * Implement and manage API Management solutions and Web Application Firewalls (WAF). * Experience with API management (Apigee, Kong, OpenShift API Management) and API lifecycle.
FEATURED
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Associate Director, Engineering (Education)
Associate Director, Engineering (Education)
IRIS Recruitment
Slough (SL3)
Competitive plus bonus and benefits
Ensure scalable, API-first, cloud-native platform design * Strong understanding of DevOps, SRE, API architecture and AI integration
Ensure scalable, API-first, cloud-native platform design * Strong understanding of DevOps, SRE, API architecture and AI integration
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
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The organisation's website operates on a headless architecture using Contentful CMS, with the front-end hosted on Vercel, and integrates with CRM, analytics, and internal systems through API-driven services. * Design and implement API-driven integrations between core systems including CRM, website platforms, marketing tools, analytics environments, and internal databases, ensuring systems operate as a connected digital ecosystem. * Experience building API-driven integrations between enterprise platforms including CRM systems, web platforms, marketing systems, and analytics environments.
The organisation's website operates on a headless architecture using Contentful CMS, with the front-end hosted on Vercel, and integrates with CRM, analytics, and internal systems through API-driven services. * Design and implement API-driven integrations between core systems including CRM, website platforms, marketing tools, analytics environments, and internal databases, ensuring systems operate as a connected digital ecosystem. * Experience building API-driven integrations between enterprise platforms including CRM systems, web platforms, marketing systems, and analytics environments.
PREMIUM
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Well versed in industry standards such as ISO, API and HI with hands-on experience in design validation and product testing.
Well versed in industry standards such as ISO, API and HI with hands-on experience in design validation and product testing.
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Large Scale Solar Electrician
Large Scale Solar Electrician
Astute Technical Recruitment Ltd
Reading (RG1)
£38000.00 - £48000.00 per annum + Van, fuel card, bonus & more
Astute's Renewables team is very proudly partnered with a huge player in the global solar market. We have a focus on the UK market for them and we're actively looking for a Solar Technician / Field Solar Engineer to join the team. The client delivers varying services, from O&M to full design and system integration. This position is field based and we're looking for a Solar Technician / Solar Engineer with a basic salary of up to £48,000 and you'd also receive a hugely impressive benefits package. Large scale / utility scale solar experience is key in achieving the top end of the salary bracket. If you're a Solar Technician or Solar Engineer looking to work for a key organisation in the market, then submit your CV to apply today. Responsibilities and duties of the Field Solar Engineer role * Planned and reactive works across a variety of ground mount solar assets
Astute's Renewables team is very proudly partnered with a huge player in the global solar market. We have a focus on the UK market for them and we're actively looking for a Solar Technician / Field Solar Engineer to join the team. The client delivers varying services, from O&M to full design and system integration. This position is field based and we're looking for a Solar Technician / Solar Engineer with a basic salary of up to £48,000 and you'd also receive a hugely impressive benefits package. Large scale / utility scale solar experience is key in achieving the top end of the salary bracket. If you're a Solar Technician or Solar Engineer looking to work for a key organisation in the market, then submit your CV to apply today. Responsibilities and duties of the Field Solar Engineer role * Planned and reactive works across a variety of ground mount solar assets
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£100k - Equity | Remote Flexibility - Typescript | Azure | Python | LLM | Terraform - The Company - We’re working with an early-stage technology company bringing digital transformation to traditionally manual supply chain and product data processes. They are looking for an experienced engineer who can balance hands-on engineering with technical strategy as the business moves through its next phase of growth. This role suits someone who enjoys operating in a small but growing team, is motivated by building solutions, solving complex problems, and is comfortable rolling up their sleeves to deliver. The environment is fast-paced, where priorities can evolve quickly and ambiguity is often part of the journey. The successful candidate will be excited by the autonomy of an early-stage environment and the opportunity to shape the technical direction of a high-potential B2B SaaS platform.
£100k - Equity | Remote Flexibility - Typescript | Azure | Python | LLM | Terraform - The Company - We’re working with an early-stage technology company bringing digital transformation to traditionally manual supply chain and product data processes. They are looking for an experienced engineer who can balance hands-on engineering with technical strategy as the business moves through its next phase of growth. This role suits someone who enjoys operating in a small but growing team, is motivated by building solutions, solving complex problems, and is comfortable rolling up their sleeves to deliver. The environment is fast-paced, where priorities can evolve quickly and ambiguity is often part of the journey. The successful candidate will be excited by the autonomy of an early-stage environment and the opportunity to shape the technical direction of a high-potential B2B SaaS platform.
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Our client is seeking a contract Threat Detection Engineer to support the ongoing delivery of detection engineering activities within a busy SOC environment. This role is centred on hands-on engineering and execution, ensuring detection content, automations, and integrations are delivered effectively and aligned to operational priorities. Working closely with threat hunting and SOC teams, you will translate detection requirements into practical outcomes, contributing directly to sprint-based delivery and continuous service improvement. This is a highly technical role suited to someone who enjoys building, tuning, and optimising detection capabilities across modern security platforms. Key Responsibilities * Develop and deliver detection content in line with sprint priorities and operational requirements
Our client is seeking a contract Threat Detection Engineer to support the ongoing delivery of detection engineering activities within a busy SOC environment. This role is centred on hands-on engineering and execution, ensuring detection content, automations, and integrations are delivered effectively and aligned to operational priorities. Working closely with threat hunting and SOC teams, you will translate detection requirements into practical outcomes, contributing directly to sprint-based delivery and continuous service improvement. This is a highly technical role suited to someone who enjoys building, tuning, and optimising detection capabilities across modern security platforms. Key Responsibilities * Develop and deliver detection content in line with sprint priorities and operational requirements
With over 300 million downloads and processing 5+ billion images annually, we serve both individual creators and major enterprises like Amazon, DoorDash, and Decathlon through our B2C app and B2B API solutions. * Role: Senior API Engineer (Fast API/Python) Our Image Editing API enables anyone to easily create high-quality images with a variety of AI-powered features including background removal, AI shadows, AI backgrounds * You will collaborate with your team to prioritize and implement the most impactful features for the API. * You will get fast feedback from API users and will iterate quickly (we update the API several times a week). You will follow the usage of the API and make decisions based on that. * The API is growing fast and sits at the intersection of developer experience and state-of-the-art AI image models.
With over 300 million downloads and processing 5+ billion images annually, we serve both individual creators and major enterprises like Amazon, DoorDash, and Decathlon through our B2C app and B2B API solutions. * Role: Senior API Engineer (Fast API/Python) Our Image Editing API enables anyone to easily create high-quality images with a variety of AI-powered features including background removal, AI shadows, AI backgrounds * You will collaborate with your team to prioritize and implement the most impactful features for the API. * You will get fast feedback from API users and will iterate quickly (we update the API several times a week). You will follow the usage of the API and make decisions based on that. * The API is growing fast and sits at the intersection of developer experience and state-of-the-art AI image models.
Design and build Automation from scratch, Web Services/API , Performance & Accessibility test frameworks with DevOps CI/CD * API testing with Rest Assured or Postman
Design and build Automation from scratch, Web Services/API , Performance & Accessibility test frameworks with DevOps CI/CD * API testing with Rest Assured or Postman
Big banks and enterprises use our API, which means our search and validation engines need to be lightning-fast and bulletproof, even when our biggest partners turn on the tap.
Big banks and enterprises use our API, which means our search and validation engines need to be lightning-fast and bulletproof, even when our biggest partners turn on the tap.
Full-Stack Delivery: Deploy production-grade features across the platform, including real-time monitoring dashboards, policy enforcement engines, API integrations, and the agent orchestration layers. * Take-Home or Pair Session (23 hours): A practical exercise involving the construction of a small agentic workflow using Claudes API.
Full-Stack Delivery: Deploy production-grade features across the platform, including real-time monitoring dashboards, policy enforcement engines, API integrations, and the agent orchestration layers. * Take-Home or Pair Session (23 hours): A practical exercise involving the construction of a small agentic workflow using Claudes API.
The organisations website operates on a headless architecture using Contentful CMS, with the front-end hosted on Vercel, and integrates with CRM, analytics, and internal systems through API-driven services. Design and implement API-driven integrations between core systems including CRM, website platforms, marketing tools, analytics environments, and internal databases, ensuring systems operate as a connected digital ecosystem. * Experience building API-driven integrations between enterprise platforms including CRM systems, web platforms, marketing systems, and analytics environments.
The organisations website operates on a headless architecture using Contentful CMS, with the front-end hosted on Vercel, and integrates with CRM, analytics, and internal systems through API-driven services. Design and implement API-driven integrations between core systems including CRM, website platforms, marketing tools, analytics environments, and internal databases, ensuring systems operate as a connected digital ecosystem. * Experience building API-driven integrations between enterprise platforms including CRM systems, web platforms, marketing systems, and analytics environments.