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145 Permanent API jobs in Harmondsworth + 20 miles
675 exact matches jobs are outside your preferred location
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Knowledge of automation and digital tools such as Dynamo, Power BI, Python, or Revit API is desirable.
Knowledge of automation and digital tools such as Dynamo, Power BI, Python, or Revit API is desirable.
We are looking for Salesforce Architects (Solution and Technical) to help deliver next-gen solutions across Insurance & Financial Services. If you thrive on complex architecture, hands-on design, and steering clients toward best-practice cloud solutions we want to talk! Lead end-to-end Salesforce & SFI Insurance Cloud architecture Drive discovery sessions, technical design, and delivery excellence Guide dev teams, review code, and ensure solution quality Work across OmniStudio, Insurance Cloud, Health Cloud, FSC & Experience Cloud 8+ yrs technical leadership 5+ yrs Salesforce dev (Apex, LWC, APIs) Strong SFI Insurance Cloud experience (Quoting, Policy Admin, FNOL, Claims, etc.) Salesforce/SFI certifications This is a Hybrid contract inside IR 35 Apply now and architect the future!
We are looking for Salesforce Architects (Solution and Technical) to help deliver next-gen solutions across Insurance & Financial Services. If you thrive on complex architecture, hands-on design, and steering clients toward best-practice cloud solutions we want to talk! Lead end-to-end Salesforce & SFI Insurance Cloud architecture Drive discovery sessions, technical design, and delivery excellence Guide dev teams, review code, and ensure solution quality Work across OmniStudio, Insurance Cloud, Health Cloud, FSC & Experience Cloud 8+ yrs technical leadership 5+ yrs Salesforce dev (Apex, LWC, APIs) Strong SFI Insurance Cloud experience (Quoting, Policy Admin, FNOL, Claims, etc.) Salesforce/SFI certifications This is a Hybrid contract inside IR 35 Apply now and architect the future!
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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.
NEWFEATURED
Software Engineering Manager - Unified Client Experience (UCX)
Software Engineering Manager - Unified Client Experience (UCX)
Hargreaves Lansdown
London
£90000 - £115000 per annum + Generous bonus, pension, PMI and more
Strong understanding of secure API integration, authentication flows, and modern UI/UX architecture.
Strong understanding of secure API integration, authentication flows, and modern UI/UX architecture.
NEWFEATURED
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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.
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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Strong experience with React (including Hooks, Redux, or Context API) to build dynamic and responsive user interfaces.
Strong experience with React (including Hooks, Redux, or Context API) to build dynamic and responsive user interfaces.
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Familiarity with automation, API protection, or security orchestration. * Experience with API security or microservices identity patterns!
Familiarity with automation, API protection, or security orchestration. * Experience with API security or microservices identity patterns!
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Experience developing a commercial/external software product with external API consumers
Experience developing a commercial/external software product with external API consumers
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In-depth understanding of data structures, system architecture, API development for microservices frameworks, distributed systems and other backend-related concepts and best practices
In-depth understanding of data structures, system architecture, API development for microservices frameworks, distributed systems and other backend-related concepts and best practices
AWS for underlying infrastructure (Aurora, Redis, Dynamo, S3, SNS, SQS, CloudFront, API Gateway, etc.)
AWS for underlying infrastructure (Aurora, Redis, Dynamo, S3, SNS, SQS, CloudFront, API Gateway, etc.)
Experience with AWS - AWS API, EC2, S3, RDS, Lambda, Route53, VPC, CloudFront, CloudWatch, IAM, ADFS, Elastic Cache, Microservices, Elastic Beanstalk
Experience with AWS - AWS API, EC2, S3, RDS, Lambda, Route53, VPC, CloudFront, CloudWatch, IAM, ADFS, Elastic Cache, Microservices, Elastic Beanstalk
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Senior JavaScript Developer Vue 3
Senior JavaScript Developer Vue 3
Client Server
Arundel Heights, Billericay (CM12), CM12 0EQ
£65000 - £75000 per annum
Senior JavaScript Developer / front End Engineer (Vue 3) Billericay / WFH to £75k - Are you a JavaScript web technologist seeking an opportunity to work with a modern tech stack on Greenfield projects? You could be progressing your career in a senior, hands-on role at an eCommerce payments solutions provider that has experienced great success in the last year and is growing as a result. * Salary (to £75k) * Bonus * 25 days holiday * Pension * Life assurance * Private medical care * Pizza days and other social events * Hybrid working with flexible hours - As a Senior JavaScript Developer you will take ownership of projects within an Agile development environment, with a focus on Vue 3 front end development to help evolve and scale the existing platforms as well as working on new Greenfield projects; you'll be able to take project ownership and manage all aspects of the
Senior JavaScript Developer / front End Engineer (Vue 3) Billericay / WFH to £75k - Are you a JavaScript web technologist seeking an opportunity to work with a modern tech stack on Greenfield projects? You could be progressing your career in a senior, hands-on role at an eCommerce payments solutions provider that has experienced great success in the last year and is growing as a result. * Salary (to £75k) * Bonus * 25 days holiday * Pension * Life assurance * Private medical care * Pizza days and other social events * Hybrid working with flexible hours - As a Senior JavaScript Developer you will take ownership of projects within an Agile development environment, with a focus on Vue 3 front end development to help evolve and scale the existing platforms as well as working on new Greenfield projects; you'll be able to take project ownership and manage all aspects of the
NEWPREMIUM
Support an API-FIRST Analytics business strategy to design and build SaaS and PaaS solutions, including analytics data solutions, quantitative models, risk analytics and customized reporting tools, and other sophisticated analytical tools. * Experience leading/designing/delivering API service-based product solutions
Support an API-FIRST Analytics business strategy to design and build SaaS and PaaS solutions, including analytics data solutions, quantitative models, risk analytics and customized reporting tools, and other sophisticated analytical tools. * Experience leading/designing/delivering API service-based product solutions
LSEG is seeking a skilled Real-Time Cloud Architect to design, build, and maintain cloud-based solutions to facilitate low latency distribution of real-time content. The ideal candidate will have extensive experience with Azure and AWS cloud platforms and collaborating with multi-functional teams to architect scalable, secure and highly performant solutions. Designing and implementing real-time distribution solutions applying Azure and AWS cloud-native services. Migrating existing on-prem applications to Azure and AWS cloud. Remediating solutions to meet RPO (Recovery Point Objective) and RTO (Recovery Time Objective) targets. Participate in technical governance reviews and ensure alignment to standards. Conduct feasibility studies and recommend technology stacks. Developing and implementing strategies to enhance cloud financial management (FinOps).
LSEG is seeking a skilled Real-Time Cloud Architect to design, build, and maintain cloud-based solutions to facilitate low latency distribution of real-time content. The ideal candidate will have extensive experience with Azure and AWS cloud platforms and collaborating with multi-functional teams to architect scalable, secure and highly performant solutions. Designing and implementing real-time distribution solutions applying Azure and AWS cloud-native services. Migrating existing on-prem applications to Azure and AWS cloud. Remediating solutions to meet RPO (Recovery Point Objective) and RTO (Recovery Time Objective) targets. Participate in technical governance reviews and ensure alignment to standards. Conduct feasibility studies and recommend technology stacks. Developing and implementing strategies to enhance cloud financial management (FinOps).
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Senior Python Developer – Team Lead - Remote
Senior Python Developer – Team Lead - Remote
XACT PLACEMENTS LIMITED
London
From £55,000 to £62,000 per annum
Senior Python Developer Team Lead - Location:Remote (UK-based) Salary:£55,000 £62,000 per annum - Were recruiting on behalf of our client who are in EdTech supporting schools across the UK. The business develops cloud-based solutions that help schools use technology and data to improve outcomes. They are looking for aSenior Python Developerwith Team Lead experience to join their engineering team. Youll lead development, set technical standards and support the delivery of scalable, cloud-native products. Main Duties of the Role * Lead the design and development of scalable Python applications * Provide technical leadership within an Agile environment * Design and maintain AWS-based systems using Infrastructure-as-Code * Set best practices across development, testing and deployment * Mentor developers and contribute to technical innovation - Your Skills and Experience
Senior Python Developer Team Lead - Location:Remote (UK-based) Salary:£55,000 £62,000 per annum - Were recruiting on behalf of our client who are in EdTech supporting schools across the UK. The business develops cloud-based solutions that help schools use technology and data to improve outcomes. They are looking for aSenior Python Developerwith Team Lead experience to join their engineering team. Youll lead development, set technical standards and support the delivery of scalable, cloud-native products. Main Duties of the Role * Lead the design and development of scalable Python applications * Provide technical leadership within an Agile environment * Design and maintain AWS-based systems using Infrastructure-as-Code * Set best practices across development, testing and deployment * Mentor developers and contribute to technical innovation - Your Skills and Experience
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AVEVA is creating software trusted by over 90% of leading industrial companies. Job Description - Job Title: Senior Software Developer - Location: Cambridge, United Kingdom Hybrid (3 days at the office) Employment Type: Full-time regular (flexible working options available) The job - As part of our Industrial Platform Group, you will join a talented team of software engineers dedicated to designing, developing, and evolving CONNECT - the core industrial intelligence platform at AVEVA. CONNECT powers a diverse range of digital solutions deployed across global industries by AVEVA and our partners. In this role, youll work closely with internal stakeholders and engineering teams to understand requirements, shape system architecture, and deliver scalable platform capabilities. Your contributions will directly impact how CONNECT supports our customers digital transformatio
AVEVA is creating software trusted by over 90% of leading industrial companies. Job Description - Job Title: Senior Software Developer - Location: Cambridge, United Kingdom Hybrid (3 days at the office) Employment Type: Full-time regular (flexible working options available) The job - As part of our Industrial Platform Group, you will join a talented team of software engineers dedicated to designing, developing, and evolving CONNECT - the core industrial intelligence platform at AVEVA. CONNECT powers a diverse range of digital solutions deployed across global industries by AVEVA and our partners. In this role, youll work closely with internal stakeholders and engineering teams to understand requirements, shape system architecture, and deliver scalable platform capabilities. Your contributions will directly impact how CONNECT supports our customers digital transformatio
AVEVA is creating software trusted by over 90% of leading industrial companies. Job Title: Senior Software Developer - Location: Cambridge, United Kingdom (Hybrid) Employment Type: Full-time - The job - As part of our Industrial Platform Group, you will join a talented team of software engineers dedicated to designing, developing, and evolving CONNECT - the core industrial intelligence platform at AVEVA. CONNECT powers a diverse range of digital solutions deployed across global industries by AVEVA and our partners. In this role, youll work closely with internal stakeholders and engineering teams to understand requirements, shape system architecture, and deliver scalable platform capabilities. Your contributions will directly impact how CONNECT supports our customers digital transformation journeys and ensures long-term value for partners and the wider AVEVA ecosystem.
AVEVA is creating software trusted by over 90% of leading industrial companies. Job Title: Senior Software Developer - Location: Cambridge, United Kingdom (Hybrid) Employment Type: Full-time - The job - As part of our Industrial Platform Group, you will join a talented team of software engineers dedicated to designing, developing, and evolving CONNECT - the core industrial intelligence platform at AVEVA. CONNECT powers a diverse range of digital solutions deployed across global industries by AVEVA and our partners. In this role, youll work closely with internal stakeholders and engineering teams to understand requirements, shape system architecture, and deliver scalable platform capabilities. Your contributions will directly impact how CONNECT supports our customers digital transformation journeys and ensures long-term value for partners and the wider AVEVA ecosystem.
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Software Developer, C#, .NET Core, SQL Server, COR7417
Software Developer, C#, .NET Core, SQL Server, COR7417
Corriculo Ltd
Rackend, Witney (OX28), OX28
£40k - 50k per year + Benefits
This is a great time for a talented full-stack C# Software Developer, with skills in both web and desktop development to join an established, niche software house, based just outside Witney, West Oxfordshire. The Role - The C# Software Developer will be joining a company that is well-established with a strong product range (mission-critical, browser and desktop-based software developed predominantly in C#, ASP.NET MVC, .NET Core, JavaScript and SQL Server) used by market leading companies across the globe. In addition to adding new functionality, the C# Software Developer will design, build, and maintain production-grade services, including defining APIs, implementing business logic, managing data access, and ensuring reliability through monitoring, logging, testing, and deployment. Working fully onsite in beautiful offices in the heart of the countryside, the C# Soft
This is a great time for a talented full-stack C# Software Developer, with skills in both web and desktop development to join an established, niche software house, based just outside Witney, West Oxfordshire. The Role - The C# Software Developer will be joining a company that is well-established with a strong product range (mission-critical, browser and desktop-based software developed predominantly in C#, ASP.NET MVC, .NET Core, JavaScript and SQL Server) used by market leading companies across the globe. In addition to adding new functionality, the C# Software Developer will design, build, and maintain production-grade services, including defining APIs, implementing business logic, managing data access, and ensuring reliability through monitoring, logging, testing, and deployment. Working fully onsite in beautiful offices in the heart of the countryside, the C# Soft
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About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution. About the role
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Position: Backend Engineer - Location: Remote (UK) Work Type: Contract - Join our team to build the backbone of a global music streaming platform! We're looking for a JAVA Backend Engineer who loves coding, solving problems, and delivering features that reach millions of users. * Build scalable Java & SpringBoot microservices. * Develop APIs and backend tools for engineers across the company. * Use TDD, CI/CD, Docker, Kubernetes, Jenkins, and GCP services. * Work with alternate languages like Python, Scala, Golang, or Node.js for backend tasks. * Collaborate in an Agile environment with cross-functional teams. * Strong backend development skills (Java and microservices). * Experience with microservices, TDD, CI/CD, Docker & Kubernetes, and cloud platforms (GCP preferred). * Familiarity with and one of Python, Golang, Scala or Node.js is a plus.
Position: Backend Engineer - Location: Remote (UK) Work Type: Contract - Join our team to build the backbone of a global music streaming platform! We're looking for a JAVA Backend Engineer who loves coding, solving problems, and delivering features that reach millions of users. * Build scalable Java & SpringBoot microservices. * Develop APIs and backend tools for engineers across the company. * Use TDD, CI/CD, Docker, Kubernetes, Jenkins, and GCP services. * Work with alternate languages like Python, Scala, Golang, or Node.js for backend tasks. * Collaborate in an Agile environment with cross-functional teams. * Strong backend development skills (Java and microservices). * Experience with microservices, TDD, CI/CD, Docker & Kubernetes, and cloud platforms (GCP preferred). * Familiarity with and one of Python, Golang, Scala or Node.js is a plus.
FEATURED
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Qualification:Must be educated to at least degree level or equivalent. Zensar is a leading digital solutions and technology services company that specialises in partnering with global organisations across industries in their Digital Transformation journey. Zensars Return on Digital strategy has enabled customers to look beyond current investments towards realising visible business benefits in their digital transformation journey. If youre looking for a workplace where associates realise and contribute to their full potential, are recognised for the impact they make, and enjoy the company of the people they work with, then youve come to the right place! As the Senior Technical Specialist you would be accountable for the successful delivery and ongoing optimisation of Salesforce solutions across the organisation.
Qualification:Must be educated to at least degree level or equivalent. Zensar is a leading digital solutions and technology services company that specialises in partnering with global organisations across industries in their Digital Transformation journey. Zensars Return on Digital strategy has enabled customers to look beyond current investments towards realising visible business benefits in their digital transformation journey. If youre looking for a workplace where associates realise and contribute to their full potential, are recognised for the impact they make, and enjoy the company of the people they work with, then youve come to the right place! As the Senior Technical Specialist you would be accountable for the successful delivery and ongoing optimisation of Salesforce solutions across the organisation.
NEW
Senior Software Engineer - Unified Client Experience (UCX)
Senior Software Engineer - Unified Client Experience (UCX)
Hargreaves Lansdown
London
£75000 - £95000 per annum + Generous bonus, pension, PMI & more
About HL and the opportunity. We're building the next generation platform for one of the UK's largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets. This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. You will build our next generation Unified Client Experience (UCX) frontend that will streamline client journeys across a range of products and services, in both web and mobile domains. It's an opportunity to design, architect and build a modern frontend using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation, transforming client journeys and delivering on HL's vision to give people financial freedom.
About HL and the opportunity. We're building the next generation platform for one of the UK's largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets. This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. You will build our next generation Unified Client Experience (UCX) frontend that will streamline client journeys across a range of products and services, in both web and mobile domains. It's an opportunity to design, architect and build a modern frontend using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation, transforming client journeys and delivering on HL's vision to give people financial freedom.
NEWFEATURED
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We are looking for the right people people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the worlds largest providers of products and services to the global energy industry. Job Duties - We are seeking a skilled and proactive Data Integration Engineer to join the Neftex Technical Services team. Reporting to the Team Lead the Data Integration Engineer will be responsible for designing, building, and maintaining robust data pipelines and integration frameworks that connect diverse systems including LLMs and a proprietary Data Integration solution. Successful candidates will be evidently enthusiastic and motivated people who we can train up in our processes and ultimately
We are looking for the right people people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience the challenges, rewards and opportunity of working for one of the worlds largest providers of products and services to the global energy industry. Job Duties - We are seeking a skilled and proactive Data Integration Engineer to join the Neftex Technical Services team. Reporting to the Team Lead the Data Integration Engineer will be responsible for designing, building, and maintaining robust data pipelines and integration frameworks that connect diverse systems including LLMs and a proprietary Data Integration solution. Successful candidates will be evidently enthusiastic and motivated people who we can train up in our processes and ultimately
NEW
About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution.
About Revolut - People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help our 65+ million customers get more from their money every day. As we continue our lightning-fast growth,? 2 things are essential to our success: our people and our culture. In recognition of our outstanding employee experience, we've been certified as a Great Place to Work. So far, we have 10,000+ people working around the world, from our offices and remotely, to help us achieve our mission. And we're looking for more brilliant people. People who love building great products, redefining success, and turning the complexity of a chaotic world into the simplicity of a beautiful solution.
Related Jobs
Locations
- The City, City (EC4)
- Shoreditch
- Southwark
- The City, City (EC3)
- Hinxton
- Lambeth
- St James
- The City, City (EC2)
- Arundel Heights
- Bellfields
- City of London
- Reading
- Cambridge
- Central London
- West End
- Milton Keynes
- South East London
- East London
- Southampton
- North West London
- London
- Berkshire
- Cambridgeshire
- Buckinghamshire
- Hampshire
- Hertfordshire
- Oxfordshire
- Essex
- Surrey
- Bedfordshire
- South East
- East Anglia
- East Midlands
- Midlands