Date posted
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Locations
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6 API jobs in The City, City of London + 20 miles
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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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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
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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
8 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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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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£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
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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 GraphQL Engineer (Federation) TypeScript | Node.js | Kubernetes
Senior GraphQL Engineer (Federation) TypeScript | Node.js | Kubernetes
Staffworx Limited
UK
MARKET RATES, OUTSIDE IR35, hybrid, 2 days on site week
Own end-to-end GraphQL API delivery: schema design through to production integration, focusing on performance, maintainability, security, and scalability. * Strong commercial experience delivering Federated GraphQL in production (schema-first design, supergraph/subgraph architecture, resolvers, schema governance, and API evolution). * Testing experience with modern frameworks such as Vitest and Playwright (API + end-to-end).
Own end-to-end GraphQL API delivery: schema design through to production integration, focusing on performance, maintainability, security, and scalability. * Strong commercial experience delivering Federated GraphQL in production (schema-first design, supergraph/subgraph architecture, resolvers, schema governance, and API evolution). * Testing experience with modern frameworks such as Vitest and Playwright (API + end-to-end).
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Job Title:Senior Engineer o Mentor and coach other engineers * Location: London * Days in the Office:2 days per week - o Work embedded in a cross-functional team with software developers, technical product owners and testers all working together towards common goals to develop JVM applications using Test Driven Development and Pair Programming - o Drive the design and implementation of our systems, knowing the context and why we are implementing what we are implementing, whilst always looking to improve our systems and ways of working - o A willingness to pair program - o Strong verbal communication and collaboration skills - o In-depth knowledge and hands-on experience in a cross-functional, agile development team - o Enthusiasm for code development and education in this area - o Experience in pair programming - o Proficiency in idiomatic Kotlin for application development
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Configuration Engineer
Configuration Engineer
EXL Service
The City, City of London (EC3), EC3N 1DD
A competitive salary with a generous bonus and additional benefits
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Technical Team Lead, Software Engineering Manager
Technical Team Lead, Software Engineering Manager
Aspire
London
£90000 - £110000 per annum + Great Benefits
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