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14 Permanent API jobs in Hertfordshire + 20 miles
35 exact matches jobs are outside your preferred location
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About this role - Full Stack Developer (Associate) London Engineering Team (Preqin & eFront | BlackRock) Preqin (part of BlackRock) is looking for a skilled Full Stack Developer (Associate) to join our London Engineering Team. In this role, youll help design, build, and run products across Preqin and eFront, supporting applications used by clients globally. Youll collaborate with a high-performing, international team and work across both the technical and functional layers of the product in a fast-growing Private Markets environment. Youll contribute to delivering scalable, cloud-first solutions using modern engineering practices and technologies including .NET, Azure, and modern web frameworks. Python, AWSand Snowflake experience are a plus. Technologies & Concepts * Backend: .NET 8 / .NET 10 (primary) * Frontend: React / TypeScript / Micro front-end architecture
About this role - Full Stack Developer (Associate) London Engineering Team (Preqin & eFront | BlackRock) Preqin (part of BlackRock) is looking for a skilled Full Stack Developer (Associate) to join our London Engineering Team. In this role, youll help design, build, and run products across Preqin and eFront, supporting applications used by clients globally. Youll collaborate with a high-performing, international team and work across both the technical and functional layers of the product in a fast-growing Private Markets environment. Youll contribute to delivering scalable, cloud-first solutions using modern engineering practices and technologies including .NET, Azure, and modern web frameworks. Python, AWSand Snowflake experience are a plus. Technologies & Concepts * Backend: .NET 8 / .NET 10 (primary) * Frontend: React / TypeScript / Micro front-end architecture
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Summary - Posted: 30 Sept 2025 - Role Number:200622957-1251Do you have an uncommon desire to seek out and solve exceedingly difficult challenges rather than the easy ones? Do you believe that truly valuable, and meaningful accomplishments are the result of pushing the limits of perseverance? Do you believe that a world-class team with relentless drive can surpass even their own high expectations? We do! But we also realize this job isnt for everyone. What we do is not easy but you do not take the easy path. We are seeking a highly motivated, innovative, and confident individuals to join the GPU Performance Modeling Team; we are a group that is driving advanced exploration for next generation GPU architectures and micro-architectures. In this highly visible role, you will be at the center of a chip design effort working with all disciplines, with a critical impact on getting high ...
Summary - Posted: 30 Sept 2025 - Role Number:200622957-1251Do you have an uncommon desire to seek out and solve exceedingly difficult challenges rather than the easy ones? Do you believe that truly valuable, and meaningful accomplishments are the result of pushing the limits of perseverance? Do you believe that a world-class team with relentless drive can surpass even their own high expectations? We do! But we also realize this job isnt for everyone. What we do is not easy but you do not take the easy path. We are seeking a highly motivated, innovative, and confident individuals to join the GPU Performance Modeling Team; we are a group that is driving advanced exploration for next generation GPU architectures and micro-architectures. In this highly visible role, you will be at the center of a chip design effort working with all disciplines, with a critical impact on getting high ...
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Summary - Posted: 18 Mar 2026Weekly Hours: 35 - Role Number:200650956-2114Apple is a place where extraordinary people gather to do their best work. Together we create products and experiences people once couldnt have imagined - and now cant imagine living without. If youre motivated by the idea of making a real impact, and joining a team where we pride ourselves in being one of the most diverse and inclusive companies in the world, a career with Apple might be your dream job! You will become a member of the Sales Finance team at Apple. With approximately 150 employees based across 4 regional hubs within EMEIA (Europe, Middle East, India and Africa), we create value, collaborating with many teams to provide outstanding commercial and financial support. We set the bar high; go out of our way to help others; share knowledge; filter out noise to focus on the essential; encourage ...
Summary - Posted: 18 Mar 2026Weekly Hours: 35 - Role Number:200650956-2114Apple is a place where extraordinary people gather to do their best work. Together we create products and experiences people once couldnt have imagined - and now cant imagine living without. If youre motivated by the idea of making a real impact, and joining a team where we pride ourselves in being one of the most diverse and inclusive companies in the world, a career with Apple might be your dream job! You will become a member of the Sales Finance team at Apple. With approximately 150 employees based across 4 regional hubs within EMEIA (Europe, Middle East, India and Africa), we create value, collaborating with many teams to provide outstanding commercial and financial support. We set the bar high; go out of our way to help others; share knowledge; filter out noise to focus on the essential; encourage ...
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Engineering Manager | £85,000-£130,000 | London (Hybrid) We're looking for an Engineering Manager to lead strong engineering teams, drive delivery, and help shape how we build and ship software at scale. You'll sit between people, product, and engineering-keeping teams supported, focused, and unblocked. Key skills * Engineering leadership & team management * Agile delivery (Scrum / Kanban) * Hiring, coaching & retention * Technical oversight & architecture awareness * Delivery in cloud environments?? Environment (any of) * Azure-based engineering teams * APIs & integration-heavy systems * Microservices / distributed architectures * Modern cloud-native platforms - If you're the person who brings clarity when things get complex and keeps delivery moving, this could be a strong fit. Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy.
Engineering Manager | £85,000-£130,000 | London (Hybrid) We're looking for an Engineering Manager to lead strong engineering teams, drive delivery, and help shape how we build and ship software at scale. You'll sit between people, product, and engineering-keeping teams supported, focused, and unblocked. Key skills * Engineering leadership & team management * Agile delivery (Scrum / Kanban) * Hiring, coaching & retention * Technical oversight & architecture awareness * Delivery in cloud environments?? Environment (any of) * Azure-based engineering teams * APIs & integration-heavy systems * Microservices / distributed architectures * Modern cloud-native platforms - If you're the person who brings clarity when things get complex and keeps delivery moving, this could be a strong fit. Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy.
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You will define and lead the technical strategy for a private cloud platform based on OpenStack, delivering scalable and reliable infrastructure services for engineering teams. The platform underpins large-scale engineering workloads and is central to the organisations infrastructure strategy. The platform is to be built using modern platform engineering principles, with strong emphasis on automation, APIs, and developer experience. You will operate across teams and functions to drive architectural direction and platform evolution - the remit of the team is to develop the capabilities of the platform as an active participant within the OpenStack community rather than simply consuming and running upstream projects. * Define and design the long-term architecture and strategy for multi-tenant Private Cloud.
You will define and lead the technical strategy for a private cloud platform based on OpenStack, delivering scalable and reliable infrastructure services for engineering teams. The platform underpins large-scale engineering workloads and is central to the organisations infrastructure strategy. The platform is to be built using modern platform engineering principles, with strong emphasis on automation, APIs, and developer experience. You will operate across teams and functions to drive architectural direction and platform evolution - the remit of the team is to develop the capabilities of the platform as an active participant within the OpenStack community rather than simply consuming and running upstream projects. * Define and design the long-term architecture and strategy for multi-tenant Private Cloud.
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Lead and contribute to hands-on development of integration solutions using Logic Apps, Function components, Message Bus services, Event Grid services, and API Manager instances * Design and implement solutions using Azure integration services (e.g. Logic Apps, Function components, Message Bus services, Event Grid services, and API Manager instances) * Strong background in .NET / C# application development and API-based architectures.
Lead and contribute to hands-on development of integration solutions using Logic Apps, Function components, Message Bus services, Event Grid services, and API Manager instances * Design and implement solutions using Azure integration services (e.g. Logic Apps, Function components, Message Bus services, Event Grid services, and API Manager instances) * Strong background in .NET / C# application development and API-based architectures.
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Strong knowledge in the application of relevant design standards and guidelines (API, AISC, OCIMF, BS 6349, Eurocode, PIANC to name a few)
Strong knowledge in the application of relevant design standards and guidelines (API, AISC, OCIMF, BS 6349, Eurocode, PIANC to name a few)
Zilch is a payment tech company on a mission to create the most empowering way to pay for anything, anywhere. Combining the best of debit, credit and savings, we give our customers the option to earn instant cashback or spread the cost of pricier purchases, completely interest free and with no late fees. Pretty great, right? We started in 2018 with a small team and a big dream - to make credit accessible to all. Since then, we've achieved double unicorn status and taken on more than 5 million customers. There are some exciting projects coming up and weve got big growth plans. Want to join us? About the role. Zilch is searching for a talented Senior Java Software Engineer to join our dynamic and fast-paced team. We are looking to speak with coding enthusiasts who live and breathe software, and who obsess about quality.
Zilch is a payment tech company on a mission to create the most empowering way to pay for anything, anywhere. Combining the best of debit, credit and savings, we give our customers the option to earn instant cashback or spread the cost of pricier purchases, completely interest free and with no late fees. Pretty great, right? We started in 2018 with a small team and a big dream - to make credit accessible to all. Since then, we've achieved double unicorn status and taken on more than 5 million customers. There are some exciting projects coming up and weve got big growth plans. Want to join us? About the role. Zilch is searching for a talented Senior Java Software Engineer to join our dynamic and fast-paced team. We are looking to speak with coding enthusiasts who live and breathe software, and who obsess about quality.
Technical background in API design and integration (HTTPS/REST, OAUTH) o Experience in testing API calls via Postman or similar * Offer and provide technical support and assistance to partners during integration, including reviewing logs and debugging API calls.
Technical background in API design and integration (HTTPS/REST, OAUTH) o Experience in testing API calls via Postman or similar * Offer and provide technical support and assistance to partners during integration, including reviewing logs and debugging API calls.
Strong command of modern application development: microservices, API-first design, event-driven architecture, and cloud platforms (AWS, Azure, or GCP).
Strong command of modern application development: microservices, API-first design, event-driven architecture, and cloud platforms (AWS, Azure, or GCP).
Technically, youre comfortable with Kubernetes and the cloud-native ecosystem, have working knowledge of at least one programming language, and can navigate cloud platforms and API integrations.
Technically, youre comfortable with Kubernetes and the cloud-native ecosystem, have working knowledge of at least one programming language, and can navigate cloud platforms and API integrations.
Mobile API abuse and session manipulation
Mobile API abuse and session manipulation
Own and execute the engineering roadmap for the CCX platform, aligning frontend, backend-for-frontend and core API services to PBWM CCX technology strategy and Private Bank client experience objectives. * Drive modern client and colleague experiences using Angular, React, JavaScript/TypeScript, and Java-based API and microservices architectures. * Ensure strong backend-to-frontend integration patterns, API design and performance to support scalable, resilient and compliant client journeys. * Solid understanding of API design, performance optimization, security and integration patterns.
Own and execute the engineering roadmap for the CCX platform, aligning frontend, backend-for-frontend and core API services to PBWM CCX technology strategy and Private Bank client experience objectives. * Drive modern client and colleague experiences using Angular, React, JavaScript/TypeScript, and Java-based API and microservices architectures. * Ensure strong backend-to-frontend integration patterns, API design and performance to support scalable, resilient and compliant client journeys. * Solid understanding of API design, performance optimization, security and integration patterns.
Were looking for a product Engineer whos AI-first in how you think and build, you thrive with real autonomy and you're energised by the scale of what's ahead. With a product first mindset, you'll work closely across our tight-knit team of 15 with Engineering, Product and Commercial, and you'll have genuine scope to shape how we build. This is a role with real purpose baked in! You believe technology can drive systemic change for people, for the planet and you want your day job to prove it. If that sounds like you, we'd love to talk. Requirements * Design, build, and maintain our core web application, APIs and data infrastructure. * Work with LLMs and ML methods to automate data operations and shape the AI-first customer experience we're building towards. * Own the full product lifecycle, from idea and prototype through to shipping and measuring real customer impact.
Were looking for a product Engineer whos AI-first in how you think and build, you thrive with real autonomy and you're energised by the scale of what's ahead. With a product first mindset, you'll work closely across our tight-knit team of 15 with Engineering, Product and Commercial, and you'll have genuine scope to shape how we build. This is a role with real purpose baked in! You believe technology can drive systemic change for people, for the planet and you want your day job to prove it. If that sounds like you, we'd love to talk. Requirements * Design, build, and maintain our core web application, APIs and data infrastructure. * Work with LLMs and ML methods to automate data operations and shape the AI-first customer experience we're building towards. * Own the full product lifecycle, from idea and prototype through to shipping and measuring real customer impact.
Centuro Global simplifies business travel and immigration with expert legal support and award-winning technology. Leading companies in over 170 countries choose us over legacy providers for our speed, transparency, and ability to handle complex requirements. * Tripled ARR * Won Best Technology in Global Mobility (FEM EMMA Awards Europe) * Won Most Pioneering Technology in Business Travel (GBTA EMEA) We work with enterprise and mid-market clients across industries, particularly in tech, energy, and the EOR space. We are not a traditional immigration firm. The industry is being reshaped by AI and we are building what comes next. The opportunity - We're hiring our first Sales Engineer in London to partner with Account Executives across Europe and North America, translate customer requirements into real platform solutions, and help us win technically demanding enterprise deals.
Centuro Global simplifies business travel and immigration with expert legal support and award-winning technology. Leading companies in over 170 countries choose us over legacy providers for our speed, transparency, and ability to handle complex requirements. * Tripled ARR * Won Best Technology in Global Mobility (FEM EMMA Awards Europe) * Won Most Pioneering Technology in Business Travel (GBTA EMEA) We work with enterprise and mid-market clients across industries, particularly in tech, energy, and the EOR space. We are not a traditional immigration firm. The industry is being reshaped by AI and we are building what comes next. The opportunity - We're hiring our first Sales Engineer in London to partner with Account Executives across Europe and North America, translate customer requirements into real platform solutions, and help us win technically demanding enterprise deals.
Join Proton and build a better internet where privacy is the default - At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Techs invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information.
Join Proton and build a better internet where privacy is the default - At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Techs invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive information.
It all started when engineer Fred Luddy wrote code that automated a tedious task for his coworker, Phyllis. She cried tears of joy. That moment inspired Fred to build a company that could do that for everyonefreeing people from busywork so they could focus on meaningful work. Today, ServiceNow is the AI control tower for business reinvention. Our ServiceNow AI platform brings together any AI, any data, and any workflow helping 85% of the Fortune 500 work smarter, faster, and better. We're building an AI-native culture where technology and talent are unstoppable together. And we're just getting started. Join us to put AI to work for people. ServiceNows Applied AI Forward Deployed Engineering (FDE) team is where bold ideas meet transformative action. We partner with our most strategic customers to shape the future of enterprise AI.
It all started when engineer Fred Luddy wrote code that automated a tedious task for his coworker, Phyllis. She cried tears of joy. That moment inspired Fred to build a company that could do that for everyonefreeing people from busywork so they could focus on meaningful work. Today, ServiceNow is the AI control tower for business reinvention. Our ServiceNow AI platform brings together any AI, any data, and any workflow helping 85% of the Fortune 500 work smarter, faster, and better. We're building an AI-native culture where technology and talent are unstoppable together. And we're just getting started. Join us to put AI to work for people. ServiceNows Applied AI Forward Deployed Engineering (FDE) team is where bold ideas meet transformative action. We partner with our most strategic customers to shape the future of enterprise AI.
Zilch is a payment tech company on a mission to create the most empowering way to pay for anything, anywhere. Combining the best of debit, credit and savings, we give our customers the option to earn instant cashback or spread the cost of pricier purchases, completely interest free and with no late fees. Pretty great, right? We started in 2018 with a small team and a big dream - to make credit accessible to all. Since then, we've achieved double unicorn status and taken on more than 5 million customers. There are some exciting projects coming up and weve got big growth plans. Want to join us? About the role. Zilch is searching for a talented Senior Java Software Engineer to join our dynamic and fast-paced team. We are looking to speak with coding enthusiasts who live and breathe software, and who obsess about quality.
Zilch is a payment tech company on a mission to create the most empowering way to pay for anything, anywhere. Combining the best of debit, credit and savings, we give our customers the option to earn instant cashback or spread the cost of pricier purchases, completely interest free and with no late fees. Pretty great, right? We started in 2018 with a small team and a big dream - to make credit accessible to all. Since then, we've achieved double unicorn status and taken on more than 5 million customers. There are some exciting projects coming up and weve got big growth plans. Want to join us? About the role. Zilch is searching for a talented Senior Java Software Engineer to join our dynamic and fast-paced team. We are looking to speak with coding enthusiasts who live and breathe software, and who obsess about quality.
We are seeking a highly skilled Lead Engineer to drive technical delivery and provide leadership within a high-calibre engineering team. This role is a balanced mix of hands-on engineering (50%) and leadership responsibilities (50%). The Lead Engineer will be responsible for line management, technical excellence, and proactive communication across stakeholders, clients, and colleagues. This role is ideal for a technically strong leader who thrives in a people-centric environment, values proactive communication, and is eager to shape the future of engineering with AI-driven innovation. * Lead technical delivery of projects and initiatives. * Line manage engineers, fostering growth and development. * Balance hands-on coding and technical work with leadership duties. * Conduct daily standups and participate in stakeholder meetings.
We are seeking a highly skilled Lead Engineer to drive technical delivery and provide leadership within a high-calibre engineering team. This role is a balanced mix of hands-on engineering (50%) and leadership responsibilities (50%). The Lead Engineer will be responsible for line management, technical excellence, and proactive communication across stakeholders, clients, and colleagues. This role is ideal for a technically strong leader who thrives in a people-centric environment, values proactive communication, and is eager to shape the future of engineering with AI-driven innovation. * Lead technical delivery of projects and initiatives. * Line manage engineers, fostering growth and development. * Balance hands-on coding and technical work with leadership duties. * Conduct daily standups and participate in stakeholder meetings.
Department - PreSales - Employment Type - Full Time - Location - London - UK - Workplace Type - Hybrid - Shape the Future of Work with Eptura - At Eptura, we're not just another tech companywe're a global leader transforming the way people, workplaces, and assets connect. Our innovative worktech solutions empower 25 million users across 115 countries to thrive in a digitally connected world. Trusted by 45% of Fortune 500 companies, we're redefining workplace innovation and driving success for organizations around the globe. Job Description - Eptura is hiring a Solution Engineer/Senior Solutions Engineer at Eptura, you will serve as a trusted technical and strategic advisor to enterprise prospects throughout the sales cycle. Youll engage deeply with customers to understand their business objectives, craft tailored demonstrations of Epturas integrated platform capabilities into clear, measurable ...
Department - PreSales - Employment Type - Full Time - Location - London - UK - Workplace Type - Hybrid - Shape the Future of Work with Eptura - At Eptura, we're not just another tech companywe're a global leader transforming the way people, workplaces, and assets connect. Our innovative worktech solutions empower 25 million users across 115 countries to thrive in a digitally connected world. Trusted by 45% of Fortune 500 companies, we're redefining workplace innovation and driving success for organizations around the globe. Job Description - Eptura is hiring a Solution Engineer/Senior Solutions Engineer at Eptura, you will serve as a trusted technical and strategic advisor to enterprise prospects throughout the sales cycle. Youll engage deeply with customers to understand their business objectives, craft tailored demonstrations of Epturas integrated platform capabilities into clear, measurable ...
About The Role - Taktile is redefining how financial institutions use AI to make critical decisions, and we're growing fast. As an Applied AI Engineer, you'll be at the heart of that transformation, building advanced agentic products that solve high-value problems. You will act as a product owner for the AI agents you create, turning them into reusable applications that solve concrete customer problems at scale in the financial crime or credit risk space. If you're passionate about applying AI to real-world financial decisioning, stay current on advances in generative AI, and bring a solid foundation in Python, SQL, and working with APIs, you'll thrive here. What You'll Do as an Sr. Applied AI Engineer * Build Reusable AI Products: Act as the product owner for your application area. Design, develop, and deploy robust, repeatable Generative AI agents that serve as configurable ...
About The Role - Taktile is redefining how financial institutions use AI to make critical decisions, and we're growing fast. As an Applied AI Engineer, you'll be at the heart of that transformation, building advanced agentic products that solve high-value problems. You will act as a product owner for the AI agents you create, turning them into reusable applications that solve concrete customer problems at scale in the financial crime or credit risk space. If you're passionate about applying AI to real-world financial decisioning, stay current on advances in generative AI, and bring a solid foundation in Python, SQL, and working with APIs, you'll thrive here. What You'll Do as an Sr. Applied AI Engineer * Build Reusable AI Products: Act as the product owner for your application area. Design, develop, and deploy robust, repeatable Generative AI agents that serve as configurable ...
Ripjar specialises in the development of software and data products that help governments and organisations combat serious financial crime. Our technology is used to identify criminal activity such as money laundering and terrorist financing, enabling organisations to enforce sanctions at scale to help combat rogue entities and state actors. We are a remote first team, with a head office based in Cheltenham. This position is open to UK wide candidates. If you are based near Cheltenham, you are more than welcome to work from our office at any time. Our mission is to elevate brand awareness and drive revenue growth through innovative marketing strategies that captivate audiences, foster customer loyalty and amplify the influence of our brand in the marketplace. This is a brand new role. Reporting into our incoming Director of Marketing, you'll be a key driver of commercial ...
Ripjar specialises in the development of software and data products that help governments and organisations combat serious financial crime. Our technology is used to identify criminal activity such as money laundering and terrorist financing, enabling organisations to enforce sanctions at scale to help combat rogue entities and state actors. We are a remote first team, with a head office based in Cheltenham. This position is open to UK wide candidates. If you are based near Cheltenham, you are more than welcome to work from our office at any time. Our mission is to elevate brand awareness and drive revenue growth through innovative marketing strategies that captivate audiences, foster customer loyalty and amplify the influence of our brand in the marketplace. This is a brand new role. Reporting into our incoming Director of Marketing, you'll be a key driver of commercial ...
Sprinklr is the definitive, AI-native platform for Unified Customer Experience Management (Unified-CXM), empowering brands to deliver extraordinary experiences at scale across every customer touchpoint. By combining human instinct with the speed and efficiency of AI, Sprinklr helps brands earn trust and loyalty through personalized, seamless, and efficient customer interactions. Sprinklrs unified platform provides powerful solutions for every customer-facing team spanning social media management, marketing, advertising, customer feedback, and omnichannel contact center management enabling enterprises to unify data, break down silos, and act on real-time insights. Today, 1,900+ enterprises and 60% of the Fortune 100 rely on Sprinklr to help them deliver consistent, trusted customer experiences worldwide. Job Description
Sprinklr is the definitive, AI-native platform for Unified Customer Experience Management (Unified-CXM), empowering brands to deliver extraordinary experiences at scale across every customer touchpoint. By combining human instinct with the speed and efficiency of AI, Sprinklr helps brands earn trust and loyalty through personalized, seamless, and efficient customer interactions. Sprinklrs unified platform provides powerful solutions for every customer-facing team spanning social media management, marketing, advertising, customer feedback, and omnichannel contact center management enabling enterprises to unify data, break down silos, and act on real-time insights. Today, 1,900+ enterprises and 60% of the Fortune 100 rely on Sprinklr to help them deliver consistent, trusted customer experiences worldwide. Job Description
Familiarity with service mesh, API gateways, and platform observability tools
Familiarity with service mesh, API gateways, and platform observability tools