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9 Permanent API jobs in Cassington + 20 miles
191 exact matches jobs are outside your preferred location
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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Build APIs using API-led connectivity and established integration patterns * Expertise in MuleSoft Anypoint Platform, Mule 4, and API-led architecture
Build APIs using API-led connectivity and established integration patterns * Expertise in MuleSoft Anypoint Platform, Mule 4, and API-led architecture
FEATURED
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Data Engineer
Data Engineer
McGregor Boyall Associates Limited
Turnham Green, West London (W4), W4 1SY
£30000 - £35000 per annum
Develop API integrations to connect multiple business systems
Develop API integrations to connect multiple business systems
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AI Workflow Manager
AI Workflow Manager
Halian Technology Limited
Longbridge, Warwick (CV34), CV34
From £80,000 to £90,000 per annum
Integrating SystemsYou'll build complex API integrations connecting internal systems with external services.
Integrating SystemsYou'll build complex API integrations connecting internal systems with external services.
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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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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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Strong understanding of API integrations, RESTful services, and event streaming.
Strong understanding of API integrations, RESTful services, and event streaming.
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Advanced knowledge of IT technologies, architectures, and infrastructure (Cloud, DevOps, API, IAM).
Advanced knowledge of IT technologies, architectures, and infrastructure (Cloud, DevOps, API, IAM).
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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
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Product Owner
Product Owner
Pertemps Kettering
Telford Way Ind Est, Kettering (NN16), NN16 8JX
£45000 - £55000 per annum
Experience with digital solutions, cloud technologies, web platforms, CMS, and API integrations
Experience with digital solutions, cloud technologies, web platforms, CMS, and API integrations
FEATURED
Supplier and partner API integrations (pricing, availability, constraints, factual data) * Translate commercial, operational and customer needs into clear product, API and data requirements * Partner with engineering to design and evolve API contracts, data structures and error handling * Proven experience as a Product Manager working on platform, API, data or pricing-heavy products
Supplier and partner API integrations (pricing, availability, constraints, factual data) * Translate commercial, operational and customer needs into clear product, API and data requirements * Partner with engineering to design and evolve API contracts, data structures and error handling * Proven experience as a Product Manager working on platform, API, data or pricing-heavy products
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Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer.
Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billons of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer.
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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Get your API on!
Get your API on!
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ABI/API stability and packaging for Linux distros, manylinux, wheels
ABI/API stability and packaging for Linux distros, manylinux, wheels
ABI/API stability and packaging for Linux distros, manylinux, wheels
ABI/API stability and packaging for Linux distros, manylinux, wheels
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Get your API on!
Get your API on!
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To work with a Senior Product Manager to continually improve The client's digital proposition, which could include product ownership of the newly introduced 'My The client' platform and commercial B2B API portal. Deliver innovative digital experiences to a global audience to improve conversion, revenue and third-party developers using the commercial B2B API portal. API product experience will be a further advantage. Thorough understanding of API development along with demonstrable experience of launching and maintaining B2B portals.
To work with a Senior Product Manager to continually improve The client's digital proposition, which could include product ownership of the newly introduced 'My The client' platform and commercial B2B API portal. Deliver innovative digital experiences to a global audience to improve conversion, revenue and third-party developers using the commercial B2B API portal. API product experience will be a further advantage. Thorough understanding of API development along with demonstrable experience of launching and maintaining B2B portals.
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Knowledge of secure coding and testing practices, particularly in cloud or API-driven environments.
Knowledge of secure coding and testing practices, particularly in cloud or API-driven environments.
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Experience with API development and integration
Experience with API development and integration
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Responsibilities include API development, system integration, dataoptimization, and performance tuning.
Responsibilities include API development, system integration, dataoptimization, and performance tuning.
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Are you ready tochart your own career path? At SJP we need talented individuals like yourselfto support our evolving culture. If youre seeking an employer that ispassionate about excellence, innovation and autonomy, SJP could be the placefor you. Location: Cirencester Office - Workplace Type: Hybrid - Employment Type: Permanent - Seniority: Mid-Senior Level - The Senior Enterprise Architect for the Salesforce Platform oversees the design and development of Salesforce solutions delivered by a panel of delivery partners to the organisation. They ensure that Salesforce architecture is scalable, secure, and optimized for efficiency. This role requires deep technical expertise, strategic thinking, and collaboration with various stakeholders to deliver high-impact solutions. The role holder will ensure 3rd party alignment to SJPs architectural patterns, guardrails and princ
Are you ready tochart your own career path? At SJP we need talented individuals like yourselfto support our evolving culture. If youre seeking an employer that ispassionate about excellence, innovation and autonomy, SJP could be the placefor you. Location: Cirencester Office - Workplace Type: Hybrid - Employment Type: Permanent - Seniority: Mid-Senior Level - The Senior Enterprise Architect for the Salesforce Platform oversees the design and development of Salesforce solutions delivered by a panel of delivery partners to the organisation. They ensure that Salesforce architecture is scalable, secure, and optimized for efficiency. This role requires deep technical expertise, strategic thinking, and collaboration with various stakeholders to deliver high-impact solutions. The role holder will ensure 3rd party alignment to SJPs architectural patterns, guardrails and princ
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Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
Demonstrated technical fluency with cloud-native architectures (e.g., AWS, GCP, Azure), API design, and the infrastructure required to serve and scale LLM-based applications.
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Principal Software Engineer - Unified Client Experience (UCX)
Principal Software Engineer - Unified Client Experience (UCX)
Hargreaves Lansdown
London
£11500 - £90000 per annum + Generous bonus, pension, PMI & more
Deep expertise in React or React Native, with hands-on experience in secure API integration, authentication flows, and frontend architecture.
Deep expertise in React or React Native, with hands-on experience in secure API integration, authentication flows, and frontend architecture.
FEATURED
Related Jobs
Locations
- Beeches Industrial Estate
- Cassington
- Datchet Common
- Freshbrook
- Keeley Green
- Longbridge
- Rackend
- Telford Way Ind Est
- Turnham Green
- Milton Keynes
- Bristol
- Birmingham
- Stevenage
- Oxford
- Reading
- Warwick
- Borehamwood
- Swindon
- Wallingford
- London
- Buckinghamshire
- Hertfordshire
- Oxfordshire
- Avon
- Berkshire
- Warwickshire
- West Midlands
- Bedfordshire
- Gloucestershire
- South East
- South West
- Midlands
- East Midlands