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Locations
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Salaries
Date posted
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47 Permanent API jobs in The City, City of London + 20 miles
Senior JavaScript Engineer / Developer (Vue.js API) London to £100k - Apply now to find out more about this Senior JavaScript Engineer / Developer (JavaScript Vue.js API) opportunity.
Senior JavaScript Engineer / Developer (Vue.js API) London to £100k - Apply now to find out more about this Senior JavaScript Engineer / Developer (JavaScript Vue.js API) opportunity.
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Backend Software Engineer Java Kotlin AWS
Backend Software Engineer Java Kotlin AWS
Client Server
Shoreditch, EC2A 2AP
£100000 - £120000 per annum
Backend Software Engineer / Developer (Java Kotlin AWS API) Hybrid WFH to £110k
Backend Software Engineer / Developer (Java Kotlin AWS API) Hybrid WFH to £110k
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Integration Architect
Integration Architect
Lynx Recruitment Limited
SW1W, South West London
From £85,000 to £100,000 per annum
Create high-level architectural assets, including API catalogues, application and connectivity models, guiding detailed design - Solid understanding of SOA, REST, and API management principles - Proficient with XSD, XML, XSLT, JSON, API
Create high-level architectural assets, including API catalogues, application and connectivity models, guiding detailed design - Solid understanding of SOA, REST, and API management principles - Proficient with XSD, XML, XSLT, JSON, API
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Strong experience with API and event-driven architectures.
Strong experience with API and event-driven architectures.
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Build and maintain an API used by the product as well as external partners.
Build and maintain an API used by the product as well as external partners.
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Strong understanding of REST API design and backend microservices architecture
Strong understanding of REST API design and backend microservices architecture
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Investran Application Specialist
Investran Application Specialist
Cobalt Recruitment.
City of London, London
£75000.00 - £95000 per annum
Proven track record of configuring and integrating financial platforms, ideally with SQL and API experience.
Proven track record of configuring and integrating financial platforms, ideally with SQL and API experience.
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Oversee system enhancements and API integrations
Oversee system enhancements and API integrations
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Ensuring feature parity and API alignment between different platforms
Ensuring feature parity and API alignment between different platforms
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Senior Software Engineer
Senior Software Engineer
Halian Technology Limited
W1, Central London
From £90,000 to £95,000 per annum Plus bonus and benefits
Cloud experience withAWSservices (Lambda, API Gateway, S3, etc.)
Cloud experience withAWSservices (Lambda, API Gateway, S3, etc.)
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They're after a Principal Infrastructure Engineer who’s as comfortable scripting against an API as they are deep-diving into Nutanix clusters. * Automate everything – Terraform, PowerShell, Python, REST APIs (Nutanix CLI/API experience a big plus)
They're after a Principal Infrastructure Engineer who’s as comfortable scripting against an API as they are deep-diving into Nutanix clusters. * Automate everything – Terraform, PowerShell, Python, REST APIs (Nutanix CLI/API experience a big plus)
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Perform Dataverse customizations, SQL queries, and CRUD operations using REST/Web API calls. * JavaScript (customizations & API calls)
Perform Dataverse customizations, SQL queries, and CRUD operations using REST/Web API calls. * JavaScript (customizations & API calls)
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ASP.NET Web API
ASP.NET Web API
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Senior Node.js Developer
Senior Node.js Developer
ARC IT Recruitment Ltd
SW1V, South West London, SW1W 9SJ
Up to £100,000 per annum
Build and implement new API systems integrating with ferry operators, third-party service providers, and more.
Build and implement new API systems integrating with ferry operators, third-party service providers, and more.
Exposure to OpenAI API or other modern AI/ML integrations.
Exposure to OpenAI API or other modern AI/ML integrations.
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Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
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Software Developer-MS-Stack
Software Developer-MS-Stack
Solus Accident Repair Centres
North London, London
GBP £35,000.00/Yr. - GBP £50,000.00/Yr.
Work across a wide range of technologies, across web, mobile apps, API, backend, and databases which are currently hosted within Azure.
Work across a wide range of technologies, across web, mobile apps, API, backend, and databases which are currently hosted within Azure.
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Software Developer (Microsoft Stack)
Software Developer (Microsoft Stack)
Solus Accident Repair Centres
North London, London
GBP £35,000.00/Yr. - GBP £50,000.00/Yr.
Work across a wide range of technologies, across web, mobile apps, API, backend, and databases which are currently hosted within Azure.
Work across a wide range of technologies, across web, mobile apps, API, backend, and databases which are currently hosted within Azure.
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Global Claims IT Leader
Global Claims IT Leader
MARSH CORPORATE SERVICES LIMITED
The City, EC3R 5BU
Pension Scheme, Private Health Insurance & life insurance
Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
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Build and work with modern API and microservices architectures
Build and work with modern API and microservices architectures
NEWEQUALITY BOOST
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Build and work with modern API and microservices architectures
Build and work with modern API and microservices architectures
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Good understanding of API integration and data flow between front-end and back-end.
Good understanding of API integration and data flow between front-end and back-end.
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Lead Engineer
Lead Engineer
GH Engage Limited
The City, EC3
£55000 - £57500 per annum + 9% Pension, Medical, 25 days annual leave
Maintenance | Fit Outs | Permits to Work £55,000/annum + bonus | Exceptional client-side benefits | Client Side - 13 Month Fixed-Term-Contract - GH Engage are currently seeking an experienced Lead Engineer with a background in electrical / mechanical engineering maintenance for a role in the City of London. As a Lead Engineer, you will support the maintenance team and Fit-Out Supervisor in managing tenant and landlord fit-out projects, as well as performing maintenance, diagnostics, and fault finding on HVAC and electrical plant. * You will work closely with tenants, contractors, and consultants to monitor maintenance works on landlord plant and equipment, including electrical, mechanical, water treatment, and HVAC systems. * Review contractor and tenant risk assessments and method statements, monitor permits to work, and control access to plant areas.
Maintenance | Fit Outs | Permits to Work £55,000/annum + bonus | Exceptional client-side benefits | Client Side - 13 Month Fixed-Term-Contract - GH Engage are currently seeking an experienced Lead Engineer with a background in electrical / mechanical engineering maintenance for a role in the City of London. As a Lead Engineer, you will support the maintenance team and Fit-Out Supervisor in managing tenant and landlord fit-out projects, as well as performing maintenance, diagnostics, and fault finding on HVAC and electrical plant. * You will work closely with tenants, contractors, and consultants to monitor maintenance works on landlord plant and equipment, including electrical, mechanical, water treatment, and HVAC systems. * Review contractor and tenant risk assessments and method statements, monitor permits to work, and control access to plant areas.
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Software Engineer - Scientific Instrumentation - London
Software Engineer - Scientific Instrumentation - London
Bond Williams Limited
W10, West London
Negotiable
A brand new vacancy for a Software Engineer with an incredible scientific instrumentation start-up has become available, based in West London (W12). The Software Engineer will form part of an interdisciplinary team developing software to automate laboratory equipment and processes. * Collaborate cross-functionally with scientists, engineers and bioinformaticians to streamline experimental workflows, improve user experience, and integrate software with complex hardware systems. * Develop and refine GUIs for prototype instruments working with stakeholders. * Develop and maintain embedded software or firmware for instruments where applicable. * Ensure robust communication between hardware components e.g., sensors, actuators, pumps. * Develop software to automate lab processes, sample handling, experimental protocols, and data collection.
A brand new vacancy for a Software Engineer with an incredible scientific instrumentation start-up has become available, based in West London (W12). The Software Engineer will form part of an interdisciplinary team developing software to automate laboratory equipment and processes. * Collaborate cross-functionally with scientists, engineers and bioinformaticians to streamline experimental workflows, improve user experience, and integrate software with complex hardware systems. * Develop and refine GUIs for prototype instruments working with stakeholders. * Develop and maintain embedded software or firmware for instruments where applicable. * Ensure robust communication between hardware components e.g., sensors, actuators, pumps. * Develop software to automate lab processes, sample handling, experimental protocols, and data collection.
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iOS Mobile Engineer
iOS Mobile Engineer
Queen Square Recruitment Limited
W1, Central London
From £70,000 to £90,000 per annum
Were looking for a talented iOS Mobile Engineer to join our growing team in London, working 4 days per week on cutting-edge mobile products that integrate with AI and modern APIs. In this role, youll play a key part in designing, developing, and maintaining robust iOS applications, while collaborating with designers, backend engineers, and AI specialists. Youll thrive if youre excited about modern mobile architecture, seamless user experiences, and the intersection of AI and mobile. What Youll Do * Design, build, and maintain iOS apps using Swift, following best practices from both the client and OEMs * Collaborate on UI/UX design, DevOps workflow, and priority features with the wider team * Participate in code reviews, and help resolve bugs, changes, and feedback efficiently * Integrate RESTful APIs with backend teams to deliver seamless mobile functionality
Were looking for a talented iOS Mobile Engineer to join our growing team in London, working 4 days per week on cutting-edge mobile products that integrate with AI and modern APIs. In this role, youll play a key part in designing, developing, and maintaining robust iOS applications, while collaborating with designers, backend engineers, and AI specialists. Youll thrive if youre excited about modern mobile architecture, seamless user experiences, and the intersection of AI and mobile. What Youll Do * Design, build, and maintain iOS apps using Swift, following best practices from both the client and OEMs * Collaborate on UI/UX design, DevOps workflow, and priority features with the wider team * Participate in code reviews, and help resolve bugs, changes, and feedback efficiently * Integrate RESTful APIs with backend teams to deliver seamless mobile functionality
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