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91 Permanent API jobs in City of London + 20 miles
299 exact matches jobs are outside your preferred location
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Data Engineer - Defence - Hybrid - Stevenage or Bolton
Data Engineer - Defence - Hybrid - Stevenage or Bolton
Anson Mccade
SG1, Stevenage
From £45,000 to £55,000 per annum
Experience with ETL, API, ESL or similar
Experience with ETL, API, ESL or similar
PREMIUM
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Experience working with REST and GraphQL API's
Experience working with REST and GraphQL API's
FEATURED
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Lead QA Engineer, Commodities Trading, £120k, London
Lead QA Engineer, Commodities Trading, £120k, London
Harvey Nash
London
Up to £120000.00 per annum + Extensive Benefits
Extensive experience in Automation Quality Assurance (UI, DB and API) in a Financial Services environment (Ideally Trading)
Extensive experience in Automation Quality Assurance (UI, DB and API) in a Financial Services environment (Ideally Trading)
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Lead QA Engineer, Commodities Trading, £120k, London
Lead QA Engineer, Commodities Trading, £120k, London
Harvey Nash
London
Up to £120000.00 per annum + Extensive Benefits
Extensive experience in Automation Quality Assurance (UI, DB and API) in a Financial Services environment (Ideally Trading)
Extensive experience in Automation Quality Assurance (UI, DB and API) in a Financial Services environment (Ideally Trading)
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Develop and optimise ETL pipelines, data workflows and API integrations
Develop and optimise ETL pipelines, data workflows and API integrations
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Skilled in CMS platforms, FTP/API workflows, and basic networking
Skilled in CMS platforms, FTP/API workflows, and basic networking
FEATURED
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Systems Integration Architect - Oracle Fusion & Oracle Cloud
Systems Integration Architect - Oracle Fusion & Oracle Cloud
EFCI Group Ltd
OX4, Oxford
From £80,000 to £100,000 per annum
System and Integration Architect Oracle Fusion & Oracle Cloud - Location:Oxford - Reports to:Head of Application Integration Services - Effective Date:ASAP - This leading Institute is reimagining how science and technology can solve global challenges in health, food security, climate change, and advanced automation/AI. Join a team of experts transforming pioneering science into commercial products for global benefit and long-term sustainability. The institute encourages collaboration, innovation, and perseverance. ASystem and Integration Architectwith deep expertise in Oracle Fusion Applications and Oracle Cloud technologies is sought. This is a key leadership role responsible for defining the architecture and governance of enterprise-wide integrations across Oracle SaaS, PaaS, within the Technology Department.
System and Integration Architect Oracle Fusion & Oracle Cloud - Location:Oxford - Reports to:Head of Application Integration Services - Effective Date:ASAP - This leading Institute is reimagining how science and technology can solve global challenges in health, food security, climate change, and advanced automation/AI. Join a team of experts transforming pioneering science into commercial products for global benefit and long-term sustainability. The institute encourages collaboration, innovation, and perseverance. ASystem and Integration Architectwith deep expertise in Oracle Fusion Applications and Oracle Cloud technologies is sought. This is a key leadership role responsible for defining the architecture and governance of enterprise-wide integrations across Oracle SaaS, PaaS, within the Technology Department.
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Create clear, concise and verifiable technical documentation, such as technical notes, API documents and integration guides.
Create clear, concise and verifiable technical documentation, such as technical notes, API documents and integration guides.
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Monitor and incorporate changes to QA compliance incorporating relevant design codes (ASME, API, etc.)
Monitor and incorporate changes to QA compliance incorporating relevant design codes (ASME, API, etc.)
Senior Laravel Full Stack PHP Developer
Senior Laravel Full Stack PHP Developer
Anonymous Recruiter
RH2, Reigate
From £60,000 to £85,000 per annum Based on experience
Experience in API integrations, database optimisation, and server-side security
Experience in API integrations, database optimisation, and server-side security
NEW
AI Solutions Engineer - London
AI Solutions Engineer - London
Transparent Technology
London, EC1A 4RN
£70000 - £140000 per annum + + bens + shares
Especially integration with the OpenAI API GPT, Gemini, LLama, Claude etc.
Especially integration with the OpenAI API GPT, Gemini, LLama, Claude etc.
NEW
AWS experience (Lambda, SNS, S3, EKS, API Gateway) * Bonus points for: DBT, Airflow, Atlan, Iceberg, CI/CD, API modelling
AWS experience (Lambda, SNS, S3, EKS, API Gateway) * Bonus points for: DBT, Airflow, Atlan, Iceberg, CI/CD, API modelling
PREMIUM
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Strong expertise in API integration, data modelling, ingestion, and activation
Strong expertise in API integration, data modelling, ingestion, and activation
NEW
Cloud-savvy - Strong background in AWS, ideally with hands-on experience in serverless technologies like Lambda, API Gateway, DynamoDB, and AppSync.
Cloud-savvy - Strong background in AWS, ideally with hands-on experience in serverless technologies like Lambda, API Gateway, DynamoDB, and AppSync.
FEATURED
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API authentication (OAuth 2.0, Azure AD).
API authentication (OAuth 2.0, Azure AD).
NEWFEATURED
Backend & Data Proficiency: Skilled in Python, Node.js, PostgreSQL, MongoDB, and API security. * Security & Compliance: Strong understanding of GDPR, API authentication, and observability.
Backend & Data Proficiency: Skilled in Python, Node.js, PostgreSQL, MongoDB, and API security. * Security & Compliance: Strong understanding of GDPR, API authentication, and observability.
NEW
Create clear, concise and verifiable technical documentation, such as technical notes, API documents and integration guides.
Create clear, concise and verifiable technical documentation, such as technical notes, API documents and integration guides.
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Technical Agile Business Analyst/ Product Engineer
Technical Agile Business Analyst/ Product Engineer
Hays
London, EC3A 4BF
£50000.0 - £60000.0 per annum + 50000-60000
Proficient with tools such as JIRA, Confluence, Figma and an API documentation platform
Proficient with tools such as JIRA, Confluence, Figma and an API documentation platform
NEW
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Take a lead role in the development and support ofMicrosoft MVC and .NET web applications and C# Console and API solutions, ensuring best practices are followed throughout the software lifecycle. * Proficient in.NET (C#), JavaScript, Web API, SQL Server, and working knowledge ofHTML, CSS, XML, JSON.
Take a lead role in the development and support ofMicrosoft MVC and .NET web applications and C# Console and API solutions, ensuring best practices are followed throughout the software lifecycle. * Proficient in.NET (C#), JavaScript, Web API, SQL Server, and working knowledge ofHTML, CSS, XML, JSON.
NEW
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Implementation (Integration) Consultant
Implementation (Integration) Consultant
Robert Half
London
£70000 - £80000 per annum + Bonus & Benefits
Configure and test API connectivity for seamless data transmission between clients and the platform * Strong knowledge of REST APIs and API integration * Familiarity with AWS and API connectivity in cloud environments
Configure and test API connectivity for seamless data transmission between clients and the platform * Strong knowledge of REST APIs and API integration * Familiarity with AWS and API connectivity in cloud environments
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Are you a hands-on Lead or Senior .Net Developer ready to shape architecture and guide talented developers? Want a hybrid role with 3 days WFH? This is your chance to stay close to the code while making key technical decisions that drive real business impact. You'll join a collaborative, forward-thinking team building cutting-edge products — with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer - Salary: £65k - £75k base + Bonus - Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more - Location: Milton Keynes – Hybrid (2 days a week in office) If you’ve got strong .Net (C#) experience and skills in GitHub, APIs, Pos
Are you a hands-on Lead or Senior .Net Developer ready to shape architecture and guide talented developers? Want a hybrid role with 3 days WFH? This is your chance to stay close to the code while making key technical decisions that drive real business impact. You'll join a collaborative, forward-thinking team building cutting-edge products — with the support, tools, and flexibility to thrive. Role: Lead Software Developer, Senior .Net Developer, Software Engineering Manager, Senior Full Stack Developer, Lead .Net Developer, Lead Software Engineer, Senior C# Developer - Salary: £65k - £75k base + Bonus - Benefits: 5% pension, 25 days holiday, 2 wellbeing days, Christmas shutdown, private healthcare, life assurance, cinema tickets & more - Location: Milton Keynes – Hybrid (2 days a week in office) If you’ve got strong .Net (C#) experience and skills in GitHub, APIs, Pos
NEWFEATURED
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Senior Digital Developer (Vue/React, .Net Core, Azure)
Senior Digital Developer (Vue/React, .Net Core, Azure)
Stott & May Professional Search Limited
London
£70000 - £80000 per annum + Benefits
Strong experience in API design and development, including RESTful APIs and OpenAPI/Swagger standards, using tools like Postman for testing and documentation.
Strong experience in API design and development, including RESTful APIs and OpenAPI/Swagger standards, using tools like Postman for testing and documentation.
NEW
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Senior Digital Developer (Vue/React, .Net Core, Azure)
Senior Digital Developer (Vue/React, .Net Core, Azure)
Stott & May
London
£70000 - £80000 per annum + Benefits
Strong experience in API design and development, including RESTful APIs and OpenAPI/Swagger standards, using tools like Postman for testing and documentation.
Strong experience in API design and development, including RESTful APIs and OpenAPI/Swagger standards, using tools like Postman for testing and documentation.
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We're a digital insurance provider with ambitious plans to become The Best and Biggest in the UK market. Over the past few years, we've made significant investments in our data and tech capabilities, particularly within our CIO function. Our CIO team is at the forefront of driving innovation and ensuring our technology infrastructure supports our ambitious goals. We've nurtured our 4Cs culture, fostering collaboration, creativity, and continuous improvement. We're proud of the journey we're on as a company and know that our continued success will rely on the contribution of our talented colleagues. The CIO team plays a crucial role in this journey, working on cutting-edge projects that enhance our digital presence and improve customer engagement. We provide insurance to over four million customers, but we know there's even bigger opportunity out there.
We're a digital insurance provider with ambitious plans to become The Best and Biggest in the UK market. Over the past few years, we've made significant investments in our data and tech capabilities, particularly within our CIO function. Our CIO team is at the forefront of driving innovation and ensuring our technology infrastructure supports our ambitious goals. We've nurtured our 4Cs culture, fostering collaboration, creativity, and continuous improvement. We're proud of the journey we're on as a company and know that our continued success will rely on the contribution of our talented colleagues. The CIO team plays a crucial role in this journey, working on cutting-edge projects that enhance our digital presence and improve customer engagement. We provide insurance to over four million customers, but we know there's even bigger opportunity out there.
FEATURED
Welcome to Hastings Direct - From our Group HR Director Pam Angel - We're a digital insurance provider with ambitious plans to become The Best and Biggest in the UK market. We've made huge investments in our data and tech capabilities over the past few years, along with nurturing our 4Cs culture. We're proud of the journey we're on as a company and know that our continued success will rely on the contribution of our talented colleagues. We provide insurance for over three million customers, but we know there's even bigger opportunity out there. The fact you're now reading this job advert means we've tempted you to find out more about #lifeatHD - we really hope you like what you see, and you'll join us to share in the success of the exciting chapter that lies ahead. We understand some people may not apply for jobs unless they feel they tick every box.
Welcome to Hastings Direct - From our Group HR Director Pam Angel - We're a digital insurance provider with ambitious plans to become The Best and Biggest in the UK market. We've made huge investments in our data and tech capabilities over the past few years, along with nurturing our 4Cs culture. We're proud of the journey we're on as a company and know that our continued success will rely on the contribution of our talented colleagues. We provide insurance for over three million customers, but we know there's even bigger opportunity out there. The fact you're now reading this job advert means we've tempted you to find out more about #lifeatHD - we really hope you like what you see, and you'll join us to share in the success of the exciting chapter that lies ahead. We understand some people may not apply for jobs unless they feel they tick every box.
FEATURED
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- London
- Central London
- East London
- West London
- North London
- South East
- North West London
- Hatfield
- South East London
- Southwark
- Dorking
- Birmingham
- Bristol
- Derby
- Norwich
- Milton Keynes
- Surrey
- Cheltenham
- Leeds
- West Midlands
- Harlow
- Essex
- Slough
- Scotland
- Hampshire
- Manchester
- East Midlands
- Sheffield
- St. Albans
- Portsmouth
- High Wycombe