Date posted
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Locations
Locations
Salaries
Date posted
Type of Company
Job types
70 Permanent API jobs in South East + 5 miles
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API authentication (OAuth 2.0, Azure AD).
API authentication (OAuth 2.0, Azure AD).
NEWFEATURED
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Ensure engineering design complies with API, EN, EEMUA, ASME standards.
Ensure engineering design complies with API, EN, EEMUA, ASME standards.
Junior Presales Engineer, UK (German & English)
Junior Presales Engineer, UK (German & English)
Optibus Transportation Limited
The City, EC2M 5TQ
From £39,000 to £45,000 per annum Salary displays OTE, which is 80% &
Optibusis a unified software platform revolutionizing public transportation planning, scheduling, and operations in over 7,000 cities worldwide. Using AI, ML, and optimization algorithms, it empowers agencies to design more efficient, equitable, and sustainable transit networks, enhancing passenger access, reducing emissions, and improving driver conditions. With offices globally and a team of 350+ employees, Optibus fosters a collaborative culture centered on innovation, determination, and impact. As the first unicorn in public transportation technology, Optibus is driving the modernization of mass transit to make it the preferred choice for cities and passengers alike. We are looking for a Junior Presales Engineer to join our global Revenue team! Based in London, this individual will play a crucial role in supporting core presales engineering activities in showcasin
Optibusis a unified software platform revolutionizing public transportation planning, scheduling, and operations in over 7,000 cities worldwide. Using AI, ML, and optimization algorithms, it empowers agencies to design more efficient, equitable, and sustainable transit networks, enhancing passenger access, reducing emissions, and improving driver conditions. With offices globally and a team of 350+ employees, Optibus fosters a collaborative culture centered on innovation, determination, and impact. As the first unicorn in public transportation technology, Optibus is driving the modernization of mass transit to make it the preferred choice for cities and passengers alike. We are looking for a Junior Presales Engineer to join our global Revenue team! Based in London, this individual will play a crucial role in supporting core presales engineering activities in showcasin
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They're after a Principal Infrastructure Engineer who’s as comfortable scripting against an API as they are deep-diving into Nutanix clusters. * Automate everything – Terraform, PowerShell, Python, REST APIs (Nutanix CLI/API experience a big plus)
They're after a Principal Infrastructure Engineer who’s as comfortable scripting against an API as they are deep-diving into Nutanix clusters. * Automate everything – Terraform, PowerShell, Python, REST APIs (Nutanix CLI/API experience a big plus)
NEWFEATURED
Proficient in hands-on development, coding, and API design.
Proficient in hands-on development, coding, and API design.
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They are embedded in every one of Facebook's product and infrastructure teams, and are core participants in every significant engineering effort underway in the company. Our team members come with varying levels of experience and backgrounds. Relevant industry experience is important (Software Engineer, Site Reliability Engineer (SRE), Systems Engineer, DevOps Engineer, Network Engineer, Database Administrator or similar role), but ultimately less so than your demonstrated abilities and attitude. We sail into uncharted waters every day at Meta in Production Engineering, and we are always learning. This position is full-time. * Own the end-to-end reliability and scalability of the platforms, services, and products built on top of Metas underlying infrastructure and network * Write and review code, develop documentation and capacity plans, and debug the hardest problems
They are embedded in every one of Facebook's product and infrastructure teams, and are core participants in every significant engineering effort underway in the company. Our team members come with varying levels of experience and backgrounds. Relevant industry experience is important (Software Engineer, Site Reliability Engineer (SRE), Systems Engineer, DevOps Engineer, Network Engineer, Database Administrator or similar role), but ultimately less so than your demonstrated abilities and attitude. We sail into uncharted waters every day at Meta in Production Engineering, and we are always learning. This position is full-time. * Own the end-to-end reliability and scalability of the platforms, services, and products built on top of Metas underlying infrastructure and network * Write and review code, develop documentation and capacity plans, and debug the hardest problems
They are embedded in every one of Facebook's product and infrastructure teams, and are core participants in every significant engineering effort underway in the company. Our team is comprised of varying levels of experience and backgrounds, from new grads to industry veterans. Relevant industry experience is important (Site Reliability Engineer (SRE), Systems Engineer, Software Engineer, DevOps Engineer, Network Engineer, Systems Administrator, Linux Administrator, Database Administrator or similar role), but ultimately less so than your demonstrated abilities and attitude. We sail into uncharted waters every day at Meta in Production Engineering, and we are always learning. * Own back-end services like our container fleet management systems, front-end services like Chat and Newsfeed, infrastructure components like our Memcache infrastructure, and everything in betwee
They are embedded in every one of Facebook's product and infrastructure teams, and are core participants in every significant engineering effort underway in the company. Our team is comprised of varying levels of experience and backgrounds, from new grads to industry veterans. Relevant industry experience is important (Site Reliability Engineer (SRE), Systems Engineer, Software Engineer, DevOps Engineer, Network Engineer, Systems Administrator, Linux Administrator, Database Administrator or similar role), but ultimately less so than your demonstrated abilities and attitude. We sail into uncharted waters every day at Meta in Production Engineering, and we are always learning. * Own back-end services like our container fleet management systems, front-end services like Chat and Newsfeed, infrastructure components like our Memcache infrastructure, and everything in betwee
You will be joining the team that is responsible for the design and implementation of Meta's global core IP networks (Express Backbone). The team is responsible for the routing platforms, protocols, and architecture that connect Meta's data centers to each other as well as to the networks that connect them to the internet. Our backbones continue to rapidly expand globally, based on the, most recently, network demands that our AGI journey brings. One of them, 'Express Backbone', handles machine to machine traffic between our Data Centers. You are an experienced network engineers with demonstrated experience in software engineering, who regularly perform analytical and data-driven dives into the workings of the backbone but also hold manufacturers to deliver and scale their products and work in cross functional environment.
You will be joining the team that is responsible for the design and implementation of Meta's global core IP networks (Express Backbone). The team is responsible for the routing platforms, protocols, and architecture that connect Meta's data centers to each other as well as to the networks that connect them to the internet. Our backbones continue to rapidly expand globally, based on the, most recently, network demands that our AGI journey brings. One of them, 'Express Backbone', handles machine to machine traffic between our Data Centers. You are an experienced network engineers with demonstrated experience in software engineering, who regularly perform analytical and data-driven dives into the workings of the backbone but also hold manufacturers to deliver and scale their products and work in cross functional environment.
They are embedded in every one of Facebook's product and infrastructure teams, and are core participants in every significant engineering effort underway in the company. Our team is comprised of varying levels of experience and backgrounds, from new grads to industry. Relevant industry experience is important, but ultimately less so than your demonstrated abilities and attitude. We sail into uncharted waters every day at Facebook in Production Engineering, and we are always learning. This position is full-time. * Own back-end services like our Hadoop data warehouses, front-end services like Messenger and Newsfeed, infrastructure components like our Memcache infrastructure, and everything in between * Write and review code, develop documentation and capacity plans, and debug the hardest problems, live, on some of the largest and most complex systems in the world
They are embedded in every one of Facebook's product and infrastructure teams, and are core participants in every significant engineering effort underway in the company. Our team is comprised of varying levels of experience and backgrounds, from new grads to industry. Relevant industry experience is important, but ultimately less so than your demonstrated abilities and attitude. We sail into uncharted waters every day at Facebook in Production Engineering, and we are always learning. This position is full-time. * Own back-end services like our Hadoop data warehouses, front-end services like Messenger and Newsfeed, infrastructure components like our Memcache infrastructure, and everything in between * Write and review code, develop documentation and capacity plans, and debug the hardest problems, live, on some of the largest and most complex systems in the world
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At Burberry, we believe creativity opens spaces. Our purpose is to unlock the power of imagination to push boundaries and open new possibilities for our people, our customers and our communities. This is the core belief that has guided Burberry since it was founded in 1856 and is central to how we operate as a company today. We aim to provide an environment for creative minds from different backgrounds to thrive, bringing a wide range of skills and experiences to everything we do. As a purposeful, values-driven brand, we are committed to being a force for good in the world as well, creating the next generation of sustainable luxury for customers, driving industry change and championing our communities. The Principal Engineer will act as a technical thought partner and knowledge anchor for platform engineering across our Digital ecosystem.
At Burberry, we believe creativity opens spaces. Our purpose is to unlock the power of imagination to push boundaries and open new possibilities for our people, our customers and our communities. This is the core belief that has guided Burberry since it was founded in 1856 and is central to how we operate as a company today. We aim to provide an environment for creative minds from different backgrounds to thrive, bringing a wide range of skills and experiences to everything we do. As a purposeful, values-driven brand, we are committed to being a force for good in the world as well, creating the next generation of sustainable luxury for customers, driving industry change and championing our communities. The Principal Engineer will act as a technical thought partner and knowledge anchor for platform engineering across our Digital ecosystem.
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Lead Engineer
Lead Engineer
GH Engage Limited
The City, EC3
£55000 - £57500 per annum + 9% Pension, Medical, 25 days annual leave
Maintenance | Fit Outs | Permits to Work £55,000/annum + bonus | Exceptional client-side benefits | Client Side - 13 Month Fixed-Term-Contract - GH Engage are currently seeking an experienced Lead Engineer with a background in electrical / mechanical engineering maintenance for a role in the City of London. As a Lead Engineer, you will support the maintenance team and Fit-Out Supervisor in managing tenant and landlord fit-out projects, as well as performing maintenance, diagnostics, and fault finding on HVAC and electrical plant. * You will work closely with tenants, contractors, and consultants to monitor maintenance works on landlord plant and equipment, including electrical, mechanical, water treatment, and HVAC systems. * Review contractor and tenant risk assessments and method statements, monitor permits to work, and control access to plant areas.
Maintenance | Fit Outs | Permits to Work £55,000/annum + bonus | Exceptional client-side benefits | Client Side - 13 Month Fixed-Term-Contract - GH Engage are currently seeking an experienced Lead Engineer with a background in electrical / mechanical engineering maintenance for a role in the City of London. As a Lead Engineer, you will support the maintenance team and Fit-Out Supervisor in managing tenant and landlord fit-out projects, as well as performing maintenance, diagnostics, and fault finding on HVAC and electrical plant. * You will work closely with tenants, contractors, and consultants to monitor maintenance works on landlord plant and equipment, including electrical, mechanical, water treatment, and HVAC systems. * Review contractor and tenant risk assessments and method statements, monitor permits to work, and control access to plant areas.
NEWFEATURED
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Senior Account Partner/Account Partner Director, Services Sales, Energy and Utilities UKI
Senior Account Partner/Account Partner Director, Services Sales, Energy and Utilities UKI
Salesforce
South East
Competitive
To get the best candidate experience, please consider applying for a maximum of 3 roles within 12 months to ensure you are not duplicating efforts. Job Category - Customer Success - Job Details - About Salesforce - Were Salesforce, the Customer Company, inspiring the future of business with AI+ Data +CRM. Leading with our core values, we help companies across every industry blaze new trails and connect with customers in a whole new way. And, we empower you to be a Trailblazer, too driving your performance and career growth, charting new paths, and improving the state of the world. If you believe in business as the greatest platform for change and in companies doing well and doing good youve come to the right place. Senior Account Partner/Account Partner Director, Services Sales - Industry: Energy & Utilities - Location: London, UK
To get the best candidate experience, please consider applying for a maximum of 3 roles within 12 months to ensure you are not duplicating efforts. Job Category - Customer Success - Job Details - About Salesforce - Were Salesforce, the Customer Company, inspiring the future of business with AI+ Data +CRM. Leading with our core values, we help companies across every industry blaze new trails and connect with customers in a whole new way. And, we empower you to be a Trailblazer, too driving your performance and career growth, charting new paths, and improving the state of the world. If you believe in business as the greatest platform for change and in companies doing well and doing good youve come to the right place. Senior Account Partner/Account Partner Director, Services Sales - Industry: Energy & Utilities - Location: London, UK
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Have practical knowledge of C#, Web API testing, Azure portal.
Have practical knowledge of C#, Web API testing, Azure portal.
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We are a fast-growing data-as-a-service provider helping businesses access high-quality business data via a robust REST API. As a Sales Engineer, you will work closely with our sales team to identify customer needs, explore potential solutions using our API, and ensure a smooth technical onboarding experience. * Explain API capabilities, data models, and integration workflows in a clear, customer-centric way * Evaluate customer challenges and propose tailored solutions using our REST API and MCP * Deliver demos, proof-of-concept support, and API walkthroughs * Solid understanding of APIs, REST, JSON, authentication (OAuth, API keys), and data workflows * Comfortable debugging basic integration issues (e.g., API calls, response errors, authentication p
We are a fast-growing data-as-a-service provider helping businesses access high-quality business data via a robust REST API. As a Sales Engineer, you will work closely with our sales team to identify customer needs, explore potential solutions using our API, and ensure a smooth technical onboarding experience. * Explain API capabilities, data models, and integration workflows in a clear, customer-centric way * Evaluate customer challenges and propose tailored solutions using our REST API and MCP * Deliver demos, proof-of-concept support, and API walkthroughs * Solid understanding of APIs, REST, JSON, authentication (OAuth, API keys), and data workflows * Comfortable debugging basic integration issues (e.g., API calls, response errors, authentication p
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Staff Back End Engineer
Staff Back End Engineer
John Lewis & Partners
SW1V, South West London, SW1V 2QQ
From £75,000 to £92,000 per annum
REST API development and/or consumption.
REST API development and/or consumption.
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Based in Northamptonshire, our Rushden site is a centre of excellence for Radiolabelled Sciences incorporating both Metabolism (which includes Clinical Metabolism, Pre-clinical ADME, In vitro and DDI services, Large Molecule Metabolism, Environmental Fate, Plant Metabolism and Metabolite Identification) in addition to Chemistry (which includes API and IMP manufacture).
Based in Northamptonshire, our Rushden site is a centre of excellence for Radiolabelled Sciences incorporating both Metabolism (which includes Clinical Metabolism, Pre-clinical ADME, In vitro and DDI services, Large Molecule Metabolism, Environmental Fate, Plant Metabolism and Metabolite Identification) in addition to Chemistry (which includes API and IMP manufacture).
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Experience of configuring API-driven workflows and third-party system integrations
Experience of configuring API-driven workflows and third-party system integrations
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API development using technologies and standards like REST/GraphQL/gRPC or similar.
API development using technologies and standards like REST/GraphQL/gRPC or similar.
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Proficient in API design, development & production operation
Proficient in API design, development & production operation
Senior Java Engineering Lead - Digital Markets Infrastructure
Senior Java Engineering Lead - Digital Markets Infrastructure
London Stock Exchange
South East
Competitive
Solid understanding of REST API design principles.
Solid understanding of REST API design principles.
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As part of the global API Group, we join a family of organisations where leadership, and leadership development is our most powerful strategic advantage and the best way to invest in our people.
As part of the global API Group, we join a family of organisations where leadership, and leadership development is our most powerful strategic advantage and the best way to invest in our people.
NEWFEATURED
Looking for a new challenge? Take a look at our current vacancies. If you see a vacancy that is right for you, we encourage you to apply! Job Title: Specialist Data Engineer - Full-time role - Working Hours: Full-time 35 hours per week - Salary: £64,575 - Location: London Docklands (Hybrid). Our permanent hybrid policy sees us all working at least four days across a fortnight in the office. The Financial Ombudsman Service has been resolving customer complaints since 2001. Our service is free for consumers to use and over 1 million people contact us every year. The last few years have seen the Financial Ombudsman Service embark on an organisation-wide transformation journey. With the customer at the heart of everything we do, we have already delivered significant improvements in the service we offer and 2026 will see us continue with our ambitious transformation agenda
Looking for a new challenge? Take a look at our current vacancies. If you see a vacancy that is right for you, we encourage you to apply! Job Title: Specialist Data Engineer - Full-time role - Working Hours: Full-time 35 hours per week - Salary: £64,575 - Location: London Docklands (Hybrid). Our permanent hybrid policy sees us all working at least four days across a fortnight in the office. The Financial Ombudsman Service has been resolving customer complaints since 2001. Our service is free for consumers to use and over 1 million people contact us every year. The last few years have seen the Financial Ombudsman Service embark on an organisation-wide transformation journey. With the customer at the heart of everything we do, we have already delivered significant improvements in the service we offer and 2026 will see us continue with our ambitious transformation agenda
Strong knowledge of mechanical equipment design codes (ASME, ANSI, API, PIP, NACE).
Strong knowledge of mechanical equipment design codes (ASME, ANSI, API, PIP, NACE).
Starling is the UKs first and leading digital bank on a mission to fix banking! Our vision is fast technology, fair service, and honest values. We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way. Were a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. Were a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices. Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech.
Starling is the UKs first and leading digital bank on a mission to fix banking! Our vision is fast technology, fair service, and honest values. We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way. Were a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. Were a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices. Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech.
You'll be joining the core backend team that underpins every Quidax product from deposits and swaps to merchant payments and our API rails.
You'll be joining the core backend team that underpins every Quidax product from deposits and swaps to merchant payments and our API rails.