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108 Permanent API jobs in East London + 20 miles
462 exact matches jobs are outside your preferred location
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ClearCourse Technical Support Lead (Payments / API / Incident Management) * Analyse API logs, JSON payloads and system behaviour * Confident with API testing, log analysis and monitoring tools
ClearCourse Technical Support Lead (Payments / API / Incident Management) * Analyse API logs, JSON payloads and system behaviour * Confident with API testing, log analysis and monitoring tools
PREMIUM
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Assist with company technical direction and architecture for mobile, cloud and API platforms
Assist with company technical direction and architecture for mobile, cloud and API platforms
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Experience of Python, Bash, API's
Experience of Python, Bash, API's
FEATURED
Applied AI Software Engineer - London (Hybrid) - AWS Partner
Applied AI Software Engineer - London (Hybrid) - AWS Partner
Transparent Technology
London
£75000 - £150000 per annum
As a Software Engineer first, you will have deep expertise in at least one programming language (Python, Node.js, Java, JavaScript, TypeScript, React) and proven experience in productionising GenAI solutions, including integrating LLMs, LangChain, OpenAI API, or Claude.
As a Software Engineer first, you will have deep expertise in at least one programming language (Python, Node.js, Java, JavaScript, TypeScript, React) and proven experience in productionising GenAI solutions, including integrating LLMs, LangChain, OpenAI API, or Claude.
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Applications Support Analyst / Engineer
Applications Support Analyst / Engineer
Kudos Partners
Datchet Common, Slough (SL3), SL3
£75,000 per annum plus 12% bonus - generous benefits package
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
API support and monitoring tools (e.g., SolarWinds, AzureAppInsights)
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Proficiency in API development, integration testing, and cross-platform troubleshooting.
Proficiency in API development, integration testing, and cross-platform troubleshooting.
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Optimize inference performance and cost (e.g., model compression, quantization, API optimization).
Optimize inference performance and cost (e.g., model compression, quantization, API optimization).
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Work across core AWS services (e.g., Lambda, DynamoDB, S3, CloudWatch, IAM, API Gateway) to support and extend contact centre functionality. * Hands-on experience with AWS services such as Lambda, S3, IAM, CloudWatch, DynamoDB, API Gateway.
Work across core AWS services (e.g., Lambda, DynamoDB, S3, CloudWatch, IAM, API Gateway) to support and extend contact centre functionality. * Hands-on experience with AWS services such as Lambda, S3, IAM, CloudWatch, DynamoDB, API Gateway.
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Our client is seeking an experienced Technical Architect with strong expertise in integration architecture, systems design best practice, and API design. * Define security standards for all integration points, including OAuth, API key management, encryption, and network segmentation within an Azure environment. * Advanced knowledge of API implementation, message queues (e.g., Azure Service Bus, Kafka), and event-driven architecture. * Deep expertise in RESTful API design, API gateways (ideally Azure API Management), and the OpenAPI specification.
Our client is seeking an experienced Technical Architect with strong expertise in integration architecture, systems design best practice, and API design. * Define security standards for all integration points, including OAuth, API key management, encryption, and network segmentation within an Azure environment. * Advanced knowledge of API implementation, message queues (e.g., Azure Service Bus, Kafka), and event-driven architecture. * Deep expertise in RESTful API design, API gateways (ideally Azure API Management), and the OpenAPI specification.
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Automation skills (PowerShell, Graph API) for identity lifecycle and migration tasks.
Automation skills (PowerShell, Graph API) for identity lifecycle and migration tasks.
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Understanding of data transfer / API's and Cloud based applications
Understanding of data transfer / API's and Cloud based applications
PREMIUM
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Principal Developer FileMaker Pro
Principal Developer FileMaker Pro
Opus Enterprise Ltd T/A Real Recruitment
Milton Keynes (MK10)
Excellent salary and benefits package
External data sources, via ODBC, RESTful API, Message Based Architecture
External data sources, via ODBC, RESTful API, Message Based Architecture
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Validate API services using Postman and interpret HTTP error codes for backend integration
Validate API services using Postman and interpret HTTP error codes for backend integration
FEATURED
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Drive architectural decisions across all software systems (cloud, mobile, and API layers).
Drive architectural decisions across all software systems (cloud, mobile, and API layers).
PREMIUM
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Solid engineering fundamentals: version control, CI/CD for ML, observability, API integration, and cloud infrastructure (AWS/Azure/GCP).
Solid engineering fundamentals: version control, CI/CD for ML, observability, API integration, and cloud infrastructure (AWS/Azure/GCP).
FEATURED
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Principal Engineer
Principal Engineer
Kingston Barnes Engineering
Keeley Green, Bedford (MK42), MK42
£80,000 per annum holiday, pension, sick pay, life assurance
Familiarity with industry standards (ISO, API, HI) and experience testing and validating designs
Familiarity with industry standards (ISO, API, HI) and experience testing and validating designs
NEW
Troubleshoot and resolve complex technical cases involving Airtable's API, SAML/SSO, SCIM provisioning, advanced automations, scripting, and third-party integrations.
Troubleshoot and resolve complex technical cases involving Airtable's API, SAML/SSO, SCIM provisioning, advanced automations, scripting, and third-party integrations.
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Experience with API integrations and wider ERP ecosystems.
Experience with API integrations and wider ERP ecosystems.
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The role is around 50% Manuel and 50% automation with a mix of UI and API testing. * Perform exploratory and automated testing across API and UI * UI and API automation knowledge
The role is around 50% Manuel and 50% automation with a mix of UI and API testing. * Perform exploratory and automated testing across API and UI * UI and API automation knowledge
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Audit all existing documentation including the Knowledge Base, API references, onboarding flows, and training materials * Identify the purpose of each piece of content and map it to a clear, intuitive documentation structure * Curiosity about how systems work and the confidence to explore API docs, UI flows, and business logic
Audit all existing documentation including the Knowledge Base, API references, onboarding flows, and training materials * Identify the purpose of each piece of content and map it to a clear, intuitive documentation structure * Curiosity about how systems work and the confidence to explore API docs, UI flows, and business logic
Scripting or API familiarity to support platform integrations (JSON, REST APIs).
Scripting or API familiarity to support platform integrations (JSON, REST APIs).
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Basic understanding of ServiceNow scripting (JavaScript, Glide API) to effectively debug and analyse issues.
Basic understanding of ServiceNow scripting (JavaScript, Glide API) to effectively debug and analyse issues.
FEATURED
Maintain and administer DevOps toolchain components including Git, Artifactory, SonarQube, and API-based scripting solutions. Proficiency in Git, Artifactory, SonarQube, and API scripting.
Maintain and administer DevOps toolchain components including Git, Artifactory, SonarQube, and API-based scripting solutions. Proficiency in Git, Artifactory, SonarQube, and API scripting.
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Lead .Net Software Developer
Lead .Net Software Developer
Hireful
Milton Keynes, Buckinghamshire, MK9
£65k - £75k base salary + bonus and great benefits
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
FEATURED
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Design, build and maintain data-intensive web applications and API-driven systems
Design, build and maintain data-intensive web applications and API-driven systems