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76 API jobs in The City, City of London + 20 miles
Node Developer Remote Working - Lynx are currently working with a large IT consultancy to help them source a Node Developer. Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Design, implement, and manage backend applications and APIs using Node.js - Work with RESTful APIs and external services to enhance system capabilities and connectivity - Perform unit and integration testing, troubleshoot issues, and maintain high code reliability - Collaborating with stakeholders and leadership to understand and refine project requirements - Working on diverse projects and challenges in a consultancy capacity - Advocating for and contributing to best practices in software engineering across teams and projects - Previous experience working within a consulting organisation is essent
Node Developer Remote Working - Lynx are currently working with a large IT consultancy to help them source a Node Developer. Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Design, implement, and manage backend applications and APIs using Node.js - Work with RESTful APIs and external services to enhance system capabilities and connectivity - Perform unit and integration testing, troubleshoot issues, and maintain high code reliability - Collaborating with stakeholders and leadership to understand and refine project requirements - Working on diverse projects and challenges in a consultancy capacity - Advocating for and contributing to best practices in software engineering across teams and projects - Previous experience working within a consulting organisation is essent
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Node Developer Remote Working - Lynx are currently working with a large IT consultancy to help them source a Node Developer. Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Design, implement, and manage backend applications and APIs using Node.js - Work with RESTful APIs and external services to enhance system capabilities and connectivity - Perform unit and integration testing, troubleshoot issues, and maintain high code reliability - Collaborating with stakeholders and leadership to understand and refine project requirements - Working on diverse projects and challenges in a consultancy capacity - Advocating for and contributing to best practices in software engineering across teams and projects - Previous experience working within a consulting organisation is essent
Node Developer Remote Working - Lynx are currently working with a large IT consultancy to help them source a Node Developer. Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Design, implement, and manage backend applications and APIs using Node.js - Work with RESTful APIs and external services to enhance system capabilities and connectivity - Perform unit and integration testing, troubleshoot issues, and maintain high code reliability - Collaborating with stakeholders and leadership to understand and refine project requirements - Working on diverse projects and challenges in a consultancy capacity - Advocating for and contributing to best practices in software engineering across teams and projects - Previous experience working within a consulting organisation is essent
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FullStack Developer ( Python / Django ) – PropTech Start-up
FullStack Developer ( Python / Django ) – PropTech Start-up
Run-Time Group Ltd
E1, East London
From £75,000 to £80,000 per annum
Full-Stack Developer (Python/Django) PropTech Start-up - Location:London Area (Shoreditch) Work Model:Hybrid 3 days in office - Job Type:Full-Time - Salary: £70k - £80k - About Us - We are working with a fast-growing Prop-Tech start-up on a mission to revolutionise the property rental market by putting power into the hands of tenants. Backed by investors but already very profitable with a solid client-base, they're building cutting-edge solutions that blend technology with the property sector to create seamless, data-driven experiences. Were looking for aFull-Stack Developer (Python / Django / React)with3-5 years of experienceto join their small team. If you thrive in a fast-paced start-up environment and love building scalable, high-performance applications, wed love to hear from you. Key Responsibilities * Design, develop, and maintain full-stack applications usingP
Full-Stack Developer (Python/Django) PropTech Start-up - Location:London Area (Shoreditch) Work Model:Hybrid 3 days in office - Job Type:Full-Time - Salary: £70k - £80k - About Us - We are working with a fast-growing Prop-Tech start-up on a mission to revolutionise the property rental market by putting power into the hands of tenants. Backed by investors but already very profitable with a solid client-base, they're building cutting-edge solutions that blend technology with the property sector to create seamless, data-driven experiences. Were looking for aFull-Stack Developer (Python / Django / React)with3-5 years of experienceto join their small team. If you thrive in a fast-paced start-up environment and love building scalable, high-performance applications, wed love to hear from you. Key Responsibilities * Design, develop, and maintain full-stack applications usingP
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Front End Developer
Front End Developer
Sanderson Government and Defence
EC1, City of London
£400 - £500 per day + outside IR35
Details - Clearance required: SC Cleared - IR35 Status: Outside IR35 - Start date: 01/12/2025 - Pay rate: 400-500/d - We are forming a new Data Team to deliver a unified, user-friendly interface that consolidates dashboards, reports, and analytical outputs from across the organisation. This 'single pane of glass' will serve as the central hub for stakeholders to explore data, monitor performance, and make informed decisions. As the Front-End Developer, you will play a pivotal role in designing and building this interface from the ground up. You'll work closely with Data Analysts, Data Scientists, Engineers, and Business Analysts to understand their outputs and translate them into intuitive, dynamic visual experiences. Your work will directly influence how data is consumed and acted upon across the organisation. Responsibilities
Details - Clearance required: SC Cleared - IR35 Status: Outside IR35 - Start date: 01/12/2025 - Pay rate: 400-500/d - We are forming a new Data Team to deliver a unified, user-friendly interface that consolidates dashboards, reports, and analytical outputs from across the organisation. This 'single pane of glass' will serve as the central hub for stakeholders to explore data, monitor performance, and make informed decisions. As the Front-End Developer, you will play a pivotal role in designing and building this interface from the ground up. You'll work closely with Data Analysts, Data Scientists, Engineers, and Business Analysts to understand their outputs and translate them into intuitive, dynamic visual experiences. Your work will directly influence how data is consumed and acted upon across the organisation. Responsibilities
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Job Title: Site Reliability Engineer - 12 Month Contract - No Sponsorship Available - Job Description - Our client are hiring a Site Reliability Engineering to join their Site Reliability Engineering group whose main objective is to ensure their services are consistently reliable for their customers. As part of adynamicand self-organizing team, you will have the opportunity to work with modern programming languages and manage software within public cloud environments. Our clients cross-functional teams cover the entire technology stack, from front ends to APIs and databases, providing the resources to build, deploy, and operate their own software. Responsibilities * Support applications in production, including responding to incidents and conducting post-incident reviews. * Apply observability engineering to proactively detect system degradation, understand system sta
Job Title: Site Reliability Engineer - 12 Month Contract - No Sponsorship Available - Job Description - Our client are hiring a Site Reliability Engineering to join their Site Reliability Engineering group whose main objective is to ensure their services are consistently reliable for their customers. As part of adynamicand self-organizing team, you will have the opportunity to work with modern programming languages and manage software within public cloud environments. Our clients cross-functional teams cover the entire technology stack, from front ends to APIs and databases, providing the resources to build, deploy, and operate their own software. Responsibilities * Support applications in production, including responding to incidents and conducting post-incident reviews. * Apply observability engineering to proactively detect system degradation, understand system sta
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Business Analyst - IT Software Consultancy
Business Analyst - IT Software Consultancy
Octad Recruitment Consultants (Octad Ltd )
BR1, Bromley
From £40,000 to £60,000 per annum Good Benefits
ThisvibrantandexpandingcompanyarelookingforaBusinessAnalysttoworkcloselywiththeCEOinthisexcitingphaseoftheirexpansion.,TheCompanyisanend-to-enddigitalsolutionorganisation. TheyarelookingforanexperiencedBusinessAnalysttojointheirteam. Inthisrole,youllbethebridgebetweenbusinessneedsandtechnicalsolutions-gatheringrequirements,analysingprocesses,anddeliveringactionableinsightsthathelpguideproductdevelopmentandbusinessstrategy. ThedevelopmentteamarebasedoverseasinSouthAfricaandThailand,withtheCTOandasystemsmanager/UATpersonbeingtheonlyUKbasedpartoftheteam. Thisroleiskeyinthatitwillbeaseniorandkeymemberofthedevelopmentteamwhichwillincludearchitectureandstrategydecisions. Collaboratewithstakeholderstogatheranddefinebusinessrequirements - Translatebusinessneedsintofunctionalandtechnicalspecifications - Analyseexistingprocessesandrecommendimprovementstoincreaseefficiencyandsca
ThisvibrantandexpandingcompanyarelookingforaBusinessAnalysttoworkcloselywiththeCEOinthisexcitingphaseoftheirexpansion.,TheCompanyisanend-to-enddigitalsolutionorganisation. TheyarelookingforanexperiencedBusinessAnalysttojointheirteam. Inthisrole,youllbethebridgebetweenbusinessneedsandtechnicalsolutions-gatheringrequirements,analysingprocesses,anddeliveringactionableinsightsthathelpguideproductdevelopmentandbusinessstrategy. ThedevelopmentteamarebasedoverseasinSouthAfricaandThailand,withtheCTOandasystemsmanager/UATpersonbeingtheonlyUKbasedpartoftheteam. Thisroleiskeyinthatitwillbeaseniorandkeymemberofthedevelopmentteamwhichwillincludearchitectureandstrategydecisions. Collaboratewithstakeholderstogatheranddefinebusinessrequirements - Translatebusinessneedsintofunctionalandtechnicalspecifications - Analyseexistingprocessesandrecommendimprovementstoincreaseefficiencyandsca
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Senior Backend Engineer
Senior Backend Engineer
Ncounter LTD
SW1, South West London
From £120,000 to £160,000 per annum Equity and package
Product-Focused Backend Engineer Functional Programming & Distributed Systems - London (Hybrid) | £120,000£160,000 + Equity - At Ncounter, were partnering with a cutting-edge AI company on a mission to redefine how professionals in highly regulated industries interact with complex, multi-modal data. Their platform empowers users to deploy custom no-code AI agents that produce verifiable outputs with full transparency - ensuring trust, compliance, and control remain central to every decision. As a Backend Engineer, youll join a growing team working at the forefront of AI infrastructure. This isnt just about clean code or strong delivery - its about ownership, product intuition, and building for scale. Youll be part of a lean, high-calibre engineering function where every member contributes to planning, testing, analysis, and execution.
Product-Focused Backend Engineer Functional Programming & Distributed Systems - London (Hybrid) | £120,000£160,000 + Equity - At Ncounter, were partnering with a cutting-edge AI company on a mission to redefine how professionals in highly regulated industries interact with complex, multi-modal data. Their platform empowers users to deploy custom no-code AI agents that produce verifiable outputs with full transparency - ensuring trust, compliance, and control remain central to every decision. As a Backend Engineer, youll join a growing team working at the forefront of AI infrastructure. This isnt just about clean code or strong delivery - its about ownership, product intuition, and building for scale. Youll be part of a lean, high-calibre engineering function where every member contributes to planning, testing, analysis, and execution.
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Legal experience is required as well as knowledge of legal apps (IntApp, Elite 3e etc) as there is API and Integration work around these apps.
Legal experience is required as well as knowledge of legal apps (IntApp, Elite 3e etc) as there is API and Integration work around these apps.
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Senior Software Engineer C# .Net - Asset Manager
Senior Software Engineer C# .Net - Asset Manager
Client Server
The City, EC4
£100000 - £150000 per annum + bonus + benefits
There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js.
There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js.
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Experience in developing and deploying Cloud Native Applications using Azure PaaS Capabilities (App Services Plans, Key Vault, SQL Azure DB, AzureFunctions, Containers, AKS, Logic Apps, Service Bus, Event Grid, API Management) * Enterprise Integration Technologies such as Azure API Management, Logic Apps, Service Bus.
Experience in developing and deploying Cloud Native Applications using Azure PaaS Capabilities (App Services Plans, Key Vault, SQL Azure DB, AzureFunctions, Containers, AKS, Logic Apps, Service Bus, Event Grid, API Management) * Enterprise Integration Technologies such as Azure API Management, Logic Apps, Service Bus.
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Applied AI Software Engineer - Python, Fast API, AWS, LLMs - Strong skills with Python & Fast API
Applied AI Software Engineer - Python, Fast API, AWS, LLMs - Strong skills with Python & Fast API
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Configure and support Axway solutions, including API management and B2B gateway. * Working knowledge of Axway technologies, particularly API management and B2B gateway.
Configure and support Axway solutions, including API management and B2B gateway. * Working knowledge of Axway technologies, particularly API management and B2B gateway.
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Senior Security Engineer Defender PurView Sentinel
Senior Security Engineer Defender PurView Sentinel
Invitise Ltd
EC1A, City of London
Up to £500 per day Outside IR35
PowerShell scripting and use of Microsoft Graph API
PowerShell scripting and use of Microsoft Graph API
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Junior Test Automation Engineer
Junior Test Automation Engineer
Lynx Recruitment Limited
SW1W, South West London
From £35,000 to £50,000 per annum
Hands-on experience with API testing tools such as RestAssured or SoapUI
Hands-on experience with API testing tools such as RestAssured or SoapUI
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Test Automation Engineer
Test Automation Engineer
Lynx Recruitment Limited
SW1W, South West London
From £50,000 to £65,000 per annum
Hands-on experience with API testing tools such as RestAssured or SoapUI
Hands-on experience with API testing tools such as RestAssured or SoapUI
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SharePoint REST API: Integration with SharePoint lists and libraries
SharePoint REST API: Integration with SharePoint lists and libraries
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Strong knowledge of Django (or similar) and API design
Strong knowledge of Django (or similar) and API design
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Experience of deploying into and using AWS services including VPC, EC2, RDS, API Gateway
Experience of deploying into and using AWS services including VPC, EC2, RDS, API Gateway
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AI (artificial intelligence) DevOps Engineer
AI (artificial intelligence) DevOps Engineer
Huxley Associates
EC1, City of London
£60000 - £90000 per annum
You'll also ensure alignment with enterprise-grade security practices, including zero trust principles, identity-aware routing, and integration with Azure API Management and Application Gateway. * API Gateway, Azure API Management (APIM), Azure Application Gateway
You'll also ensure alignment with enterprise-grade security practices, including zero trust principles, identity-aware routing, and integration with Azure API Management and Application Gateway. * API Gateway, Azure API Management (APIM), Azure Application Gateway
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Proficiency with Git workflows, LAMP stack, and REST API integrations.
Proficiency with Git workflows, LAMP stack, and REST API integrations.
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Most functionality is written by the API or integrations team but we need a strong developer that can do both.
Most functionality is written by the API or integrations team but we need a strong developer that can do both.
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Strong background in test automation ((Playwright, Appium, API,etc.)
Strong background in test automation ((Playwright, Appium, API,etc.)
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We are looking for an ambitious, warm and inquisitive individual to join our Development team as a Quadient Inspire Developer for variable omni-channel communications. You will be reporting directly to the Head of Development. Ability to install/setup/maintain and develop Inspire Interactive. 1. Advanced in Inspire Designer - 2. Advanced in Inspire Designer Scripting - 3. Highly knowledgeable in Inspire Interactive - 4. Advanced in Inspire Scaler or Inspire Automation ( Scaler preferable but plenty of crossover and transferable skills from automation) 5. Able to create and setup new tenants / companies in Interactive - 6. Confident in creating and managing base templates within Interactive - 7. Confident in creating and managing templates within Interactive - 8. Confident in managing approval processes (an Interactive approval process) including adding basic forms to
We are looking for an ambitious, warm and inquisitive individual to join our Development team as a Quadient Inspire Developer for variable omni-channel communications. You will be reporting directly to the Head of Development. Ability to install/setup/maintain and develop Inspire Interactive. 1. Advanced in Inspire Designer - 2. Advanced in Inspire Designer Scripting - 3. Highly knowledgeable in Inspire Interactive - 4. Advanced in Inspire Scaler or Inspire Automation ( Scaler preferable but plenty of crossover and transferable skills from automation) 5. Able to create and setup new tenants / companies in Interactive - 6. Confident in creating and managing base templates within Interactive - 7. Confident in creating and managing templates within Interactive - 8. Confident in managing approval processes (an Interactive approval process) including adding basic forms to
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The National Institute for Health and Care Research (NIHR) is the United Kingdoms largest funder of health and care research. The NIHR invests more than £1.6 billion a year of research funding from the Department of Health and Social Care (DHSC). The NIHRs research programmes, people, centres of excellence and systems together represent the most integrated health research system in the world. Established in 2006 by the Department of Health and Social Care (DHSC), the NIHRs mission is to improve the health and wealth of the nation through research. It funds, supports, and delivers high-quality research that addresses the needs of patients, the public, and the healthcare system. Job Description - The National Institute for Health and Care Research is seeking a strategic and experienced leader to head our Data and Analytics function.
The National Institute for Health and Care Research (NIHR) is the United Kingdoms largest funder of health and care research. The NIHR invests more than £1.6 billion a year of research funding from the Department of Health and Social Care (DHSC). The NIHRs research programmes, people, centres of excellence and systems together represent the most integrated health research system in the world. Established in 2006 by the Department of Health and Social Care (DHSC), the NIHRs mission is to improve the health and wealth of the nation through research. It funds, supports, and delivers high-quality research that addresses the needs of patients, the public, and the healthcare system. Job Description - The National Institute for Health and Care Research is seeking a strategic and experienced leader to head our Data and Analytics function.
Company Description - The National Institute for Health and Care Research (NIHR) is the United Kingdoms largest funder of health and care research. The NIHR invests more than £1.6 billion a year of research funding from the Department of Health and Social Care (DHSC). The NIHRs research programmes, people, centres of excellence and systems together represent the most integrated health research system in the world. Established in 2006 by the Department of Health and Social Care (DHSC), the NIHRs mission is to improve the health and wealth of the nation through research. It funds, supports, and delivers high-quality research that addresses the needs of patients, the public, and the healthcare system. Job Description - The National Institute for Health and Care Research is seeking a strategic and experienced leader to head our Data and Analytics function.
Company Description - The National Institute for Health and Care Research (NIHR) is the United Kingdoms largest funder of health and care research. The NIHR invests more than £1.6 billion a year of research funding from the Department of Health and Social Care (DHSC). The NIHRs research programmes, people, centres of excellence and systems together represent the most integrated health research system in the world. Established in 2006 by the Department of Health and Social Care (DHSC), the NIHRs mission is to improve the health and wealth of the nation through research. It funds, supports, and delivers high-quality research that addresses the needs of patients, the public, and the healthcare system. Job Description - The National Institute for Health and Care Research is seeking a strategic and experienced leader to head our Data and Analytics function.