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66 Permanent API jobs in Piccadilly, Central London + 20 miles
194 exact matches jobs are outside your preferred location
Experience in API-first development
Experience in API-first development
Familiarity with REST API testing using tools like Postman.
Familiarity with REST API testing using tools like Postman.
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Currently, our micro-services communicate via REST API calls, fostering seamless integration between different services.
Currently, our micro-services communicate via REST API calls, fostering seamless integration between different services.
This includes Kubernetes API, custom resources, API aggregation, Helm, and manifest standardization.
This includes Kubernetes API, custom resources, API aggregation, Helm, and manifest standardization.
Experience with API Gateways (e.g. GCP). * Knowledge of security best practices in API development (e.g., SAML, OAuth, JWT).
Experience with API Gateways (e.g. GCP). * Knowledge of security best practices in API development (e.g., SAML, OAuth, JWT).
Experience in API integration (REST/SOAP) through ERP systems, IoT devices and or third-party logistics platforms. * API/Data Integration Accuracy: % of successful data exchanges between WMS and ERP/third-party systems without manual intervention.
Experience in API integration (REST/SOAP) through ERP systems, IoT devices and or third-party logistics platforms. * API/Data Integration Accuracy: % of successful data exchanges between WMS and ERP/third-party systems without manual intervention.
In this critical role, you will be instrumental in driving the adoption, engagement, and growth of Smartsheet's developer platform and API capabilities. * Collaborate with cross-functional teams to develop and execute comprehensive go-to-market plans including customer communications for new API capabilities, SDKs, developer tools, and platform enhancements. * Clearly communicate technical details to customers regarding API changes, releases, and deprecations including writing release notes and collaborating on developer documentation and API guides.
In this critical role, you will be instrumental in driving the adoption, engagement, and growth of Smartsheet's developer platform and API capabilities. * Collaborate with cross-functional teams to develop and execute comprehensive go-to-market plans including customer communications for new API capabilities, SDKs, developer tools, and platform enhancements. * Clearly communicate technical details to customers regarding API changes, releases, and deprecations including writing release notes and collaborating on developer documentation and API guides.
Familiarity with WhatsApp Business API, web-socket or webhook architectures, and common live-chat SDKs.
Familiarity with WhatsApp Business API, web-socket or webhook architectures, and common live-chat SDKs.
This includes native integrations with BI tools, CRMs, AI platforms, and LLMs, as well as expanding and owning our API platform. Own and evolve the GWI Data API by defining key use cases, prioritising the roadmap, maintaining comprehensive documentation, supporting partner integrations, and driving adoption across customers and third-party developers. API Scale Leadership - Proven track record building and scaling public APIs to drive $100 M+ in ARR, from roadmap through adoption and monetization. API Product Leadership - You own APIs end to end, from roadmap to developer experience, and know how to scale adoption and usage.
This includes native integrations with BI tools, CRMs, AI platforms, and LLMs, as well as expanding and owning our API platform. Own and evolve the GWI Data API by defining key use cases, prioritising the roadmap, maintaining comprehensive documentation, supporting partner integrations, and driving adoption across customers and third-party developers. API Scale Leadership - Proven track record building and scaling public APIs to drive $100 M+ in ARR, from roadmap through adoption and monetization. API Product Leadership - You own APIs end to end, from roadmap to developer experience, and know how to scale adoption and usage.
From refining API design to optimising performance and observability, youll be the driving force behind the systems that keep Onetrace running smoothly and growing fast. * RESTful API design and implementation
From refining API design to optimising performance and observability, youll be the driving force behind the systems that keep Onetrace running smoothly and growing fast. * RESTful API design and implementation
Balance roadmap and service levels: Prioritise platform improvements, API consistency, reliability SLAs, and technical documentation to ensure smooth usage by other teams. * 4+ years in product management with a strong technical focus-ideally in infrastructure, platform, or API products.
Balance roadmap and service levels: Prioritise platform improvements, API consistency, reliability SLAs, and technical documentation to ensure smooth usage by other teams. * 4+ years in product management with a strong technical focus-ideally in infrastructure, platform, or API products.
Leverage knowledge of data analysis, API documentation and payment processing manage, coach, and develop a team of hybrid L1 and L2 associates
Leverage knowledge of data analysis, API documentation and payment processing manage, coach, and develop a team of hybrid L1 and L2 associates
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Experience in managing SaaS and API products with good understanding of XML, JSON and REST.
Experience in managing SaaS and API products with good understanding of XML, JSON and REST.
lastupdated - 09/05/2025 - jobtitle - Job Description - Role - Senior Consultant - Required experience - Java, Spring boot, Microservices, RestAPI, CICD **Location - Burgess Hill - As a Senior Consultant, you are an expert at contributing to different phases of the consulting lifecycle. You will be intensely involved in; you will define the problem, propose and refine the solution. You will also play an important role in the development, configuration and deployment of the overall solution. You will guide teams on project processes, deliverables and contribute to the proposal development, client training and internal capability-building and help detail the project scope. You will have the opportunity to shape value-adding consulting solutions that enable our clients to meet the changing needs of the global landscape.
lastupdated - 09/05/2025 - jobtitle - Job Description - Role - Senior Consultant - Required experience - Java, Spring boot, Microservices, RestAPI, CICD **Location - Burgess Hill - As a Senior Consultant, you are an expert at contributing to different phases of the consulting lifecycle. You will be intensely involved in; you will define the problem, propose and refine the solution. You will also play an important role in the development, configuration and deployment of the overall solution. You will guide teams on project processes, deliverables and contribute to the proposal development, client training and internal capability-building and help detail the project scope. You will have the opportunity to shape value-adding consulting solutions that enable our clients to meet the changing needs of the global landscape.
Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But were more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 10 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks, we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA, and we have an insatiable hunger to wow! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But were more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 10 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks, we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA, and we have an insatiable hunger to wow! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
About Jaja - Our Mission: Empowering our customers to buy, borrow, and builddriven by technology, fuelled by data, and built for the future. Our Company Values: Care Deeply, Adapt & Thrive, Challenge Everything, Go for It! Own It, Make It Simple. Jaja is an innovative UK-based consumer finance business, initially launching a digital credit card in 2018, with a pipeline of consumer finance solutions in development. With backing from major private equity funds, Jaja has grown rapidly, recently acquiring a £530m credit card portfolio from the Bank of Ireland and launching a significant partnership with Asda in the UK. We are on a mission to redefine the consumer finance experience and liberate customers from unnecessary complexity, wasted time, and frustration. Or as we say it, Make It Simple . We aim to delight our customers by making their experience simpler, more enjo
About Jaja - Our Mission: Empowering our customers to buy, borrow, and builddriven by technology, fuelled by data, and built for the future. Our Company Values: Care Deeply, Adapt & Thrive, Challenge Everything, Go for It! Own It, Make It Simple. Jaja is an innovative UK-based consumer finance business, initially launching a digital credit card in 2018, with a pipeline of consumer finance solutions in development. With backing from major private equity funds, Jaja has grown rapidly, recently acquiring a £530m credit card portfolio from the Bank of Ireland and launching a significant partnership with Asda in the UK. We are on a mission to redefine the consumer finance experience and liberate customers from unnecessary complexity, wasted time, and frustration. Or as we say it, Make It Simple . We aim to delight our customers by making their experience simpler, more enjo
Get to know The Pokémon Company International - The Pokémon Company International, a subsidiary of The Pokémon Company in Japan, manages the property outside of Asia and is responsible for brand management, licensing, marketing, the Pokémon Trading Card Game, the animated TV series, home entertainment, and the official Pokémon website. Pokémon was launched in Japan in 1996 and today is one of the most popular children's entertainment properties in the world. Get to know the role * Job Title: Manager, Software Development - This role is ideal for a technically adept leader with a strong understanding of modern cloud-native architectures, agile delivery, and platform engineering. Youll be responsible for ensuring the platform is scalable, resilient, and delivers a world-class shopping experience to Pokémon fans globally. * People Manager: Yes - What youll do
Get to know The Pokémon Company International - The Pokémon Company International, a subsidiary of The Pokémon Company in Japan, manages the property outside of Asia and is responsible for brand management, licensing, marketing, the Pokémon Trading Card Game, the animated TV series, home entertainment, and the official Pokémon website. Pokémon was launched in Japan in 1996 and today is one of the most popular children's entertainment properties in the world. Get to know the role * Job Title: Manager, Software Development - This role is ideal for a technically adept leader with a strong understanding of modern cloud-native architectures, agile delivery, and platform engineering. Youll be responsible for ensuring the platform is scalable, resilient, and delivers a world-class shopping experience to Pokémon fans globally. * People Manager: Yes - What youll do
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Power BI & Fabric Developer (Project Controls/Primavera P6 Data) at BaseOne, London, £Competitive Day Rate
Power BI & Fabric Developer (Project Controls/Primavera P6 Data) at BaseOne, London, £Competitive Day Rate
Baseone
London
Competitive
Contract / FTC / Perm | Remote (UK) with occasional client site visits | Competitive - About BaseOne - At BaseOne, we design and deliver human-centric data solutions for some of the worlds most complex projects from major infrastructure to energy and banking. Our team blends deep domain expertise in project controls with modern tools like Power BI, Microsoft Fabric, and AI-driven analytics , helping clients make better decisions with confidence. Were now looking for a Power BI & Fabric Developer with hands-on experience in Primavera P6 project controls data to join our delivery team. This is a chance to work on high-impact projects across the UK and internationally, building reporting solutions that simplify complexity for decision makers. The Role - Youll be part of a multidisciplinary team working directly with project controls, PMO, and client stakeholders.
Contract / FTC / Perm | Remote (UK) with occasional client site visits | Competitive - About BaseOne - At BaseOne, we design and deliver human-centric data solutions for some of the worlds most complex projects from major infrastructure to energy and banking. Our team blends deep domain expertise in project controls with modern tools like Power BI, Microsoft Fabric, and AI-driven analytics , helping clients make better decisions with confidence. Were now looking for a Power BI & Fabric Developer with hands-on experience in Primavera P6 project controls data to join our delivery team. This is a chance to work on high-impact projects across the UK and internationally, building reporting solutions that simplify complexity for decision makers. The Role - Youll be part of a multidisciplinary team working directly with project controls, PMO, and client stakeholders.
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London - Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. We are looking for a proactive, thorough Senior Software Engineer to help build our Defi platform. You will play a critical role in building financial and crypto-native products, services and APIs. As a Senior Back-End Engineer you should lead by example - driving the technical discussions, influencing the approach and making a positive impact on the team's development by advocating the best engineering practices. Build on our DeFi wallet platform, expanding support for multiple networks - Develop and integrate APIs from new and existing services, to our various product applications. Be a part of a dedicated engineering team committed to applying the highest
London - Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. We are looking for a proactive, thorough Senior Software Engineer to help build our Defi platform. You will play a critical role in building financial and crypto-native products, services and APIs. As a Senior Back-End Engineer you should lead by example - driving the technical discussions, influencing the approach and making a positive impact on the team's development by advocating the best engineering practices. Build on our DeFi wallet platform, expanding support for multiple networks - Develop and integrate APIs from new and existing services, to our various product applications. Be a part of a dedicated engineering team committed to applying the highest
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27 June 2025 - Job Description - Reporting of the Role - This role reports to Lead Python Developer - Overview of job - We're looking for a multi-skilled, adaptable developer with a passion for high quality code to join our established development team. 3 best things about the job * Getting to work on some outstanding products that get used by over 30 million people. * Work in a team that this is a fun, creative and satisfying place for developers to work. * Work in a team where we believe in code reviews, paired programming, continuous integration, hack time and investing in developers to make them better. * Contributed to delivering phenomenal solutions for delivering the latest innovations to our digital products. * Proven a collaborative approach to delivering solutions. * Shown passion to learn new things and to share knowledge with others.
27 June 2025 - Job Description - Reporting of the Role - This role reports to Lead Python Developer - Overview of job - We're looking for a multi-skilled, adaptable developer with a passion for high quality code to join our established development team. 3 best things about the job * Getting to work on some outstanding products that get used by over 30 million people. * Work in a team that this is a fun, creative and satisfying place for developers to work. * Work in a team where we believe in code reviews, paired programming, continuous integration, hack time and investing in developers to make them better. * Contributed to delivering phenomenal solutions for delivering the latest innovations to our digital products. * Proven a collaborative approach to delivering solutions. * Shown passion to learn new things and to share knowledge with others.
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Why Altium? Altium is transforming the way electronics are designed and built. From startups to worlds technology giants, our digital platforms give more power to PCB designers, supply chain, and manufacturing, letting them collaborate as never before. * Constant innovation has created a transformative technology, unique in its space * More than 30,000 companies and 100,000 electronics engineers worldwide use Altium * We are growing, debt-free, and financially strong, with the resources to become #1 in the EDA industry - Why A365 Software Engineering? Build the cloud platform thats transforming electronics design. Altium 365 for cloud lets design engineers communicate, collaborate and bring their ideas to market more efficiently than any platform in the industry. We're building a Developer Experience team focused on empowering our engineering organization with tools,
Why Altium? Altium is transforming the way electronics are designed and built. From startups to worlds technology giants, our digital platforms give more power to PCB designers, supply chain, and manufacturing, letting them collaborate as never before. * Constant innovation has created a transformative technology, unique in its space * More than 30,000 companies and 100,000 electronics engineers worldwide use Altium * We are growing, debt-free, and financially strong, with the resources to become #1 in the EDA industry - Why A365 Software Engineering? Build the cloud platform thats transforming electronics design. Altium 365 for cloud lets design engineers communicate, collaborate and bring their ideas to market more efficiently than any platform in the industry. We're building a Developer Experience team focused on empowering our engineering organization with tools,
The Firm - XTX Markets is a leading algorithmic trading firm which uses state-of-the-art machine learning technology to produce price forecasts for over 50,000 financial instruments across equities, fixed income, currencies, commodities and crypto. It uses those forecasts to trade on exchanges and alternative trading venues, and to offer differentiated liquidity directly to clients worldwide. The firm trades over $250bn a day across 35 countries and has over 250 employees based in London, Singapore, New York, Paris, Bristol, Mumbai, Yerevan and Kajaani. We leverage the talent of the people who work here, modern computational techniques and state-of-the-art research infrastructure to analyse large data sets across markets quickly and efficiently, to maximize the effectiveness of our proprietary trading algorithms. We are actively seeking new methods and ideas.
The Firm - XTX Markets is a leading algorithmic trading firm which uses state-of-the-art machine learning technology to produce price forecasts for over 50,000 financial instruments across equities, fixed income, currencies, commodities and crypto. It uses those forecasts to trade on exchanges and alternative trading venues, and to offer differentiated liquidity directly to clients worldwide. The firm trades over $250bn a day across 35 countries and has over 250 employees based in London, Singapore, New York, Paris, Bristol, Mumbai, Yerevan and Kajaani. We leverage the talent of the people who work here, modern computational techniques and state-of-the-art research infrastructure to analyse large data sets across markets quickly and efficiently, to maximize the effectiveness of our proprietary trading algorithms. We are actively seeking new methods and ideas.
Who we are Nothing exists to make tech feel exciting again. Were building a different kind of company, one that puts design, emotion, and human creativity at the heart of everything we do. From the way our products look to how they sound, feel, and function, we care about the details that make technology not just useful, but inspiring. This is a place for the curious. The creators. The ones who ask why not and mean it. If you're drawn to bold ideas, fast moves, and work that actually makes you feel something, youll fit right in. We're not here to follow the rules. We're here to make better ones. About Nothing Founded in London in 2020, Nothing is a design-led tech company building an alternative to the industry giants. Our products from award-winning smartphones to expressive audio and wearables blend iconic design with intuitive engineering to put people and creativi
Who we are Nothing exists to make tech feel exciting again. Were building a different kind of company, one that puts design, emotion, and human creativity at the heart of everything we do. From the way our products look to how they sound, feel, and function, we care about the details that make technology not just useful, but inspiring. This is a place for the curious. The creators. The ones who ask why not and mean it. If you're drawn to bold ideas, fast moves, and work that actually makes you feel something, youll fit right in. We're not here to follow the rules. We're here to make better ones. About Nothing Founded in London in 2020, Nothing is a design-led tech company building an alternative to the industry giants. Our products from award-winning smartphones to expressive audio and wearables blend iconic design with intuitive engineering to put people and creativi
About Us - Diligent is the AI leader in governance, risk and compliance (GRC) SaaS solutions, helping more than 1 million users and 700,000 board members to clarify risk and elevate governance. The Diligent One Platform gives practitioners, the C-Suite and the board a consolidated view of their entire GRC practice so they can more effectively manage risk, build greater resilience and make better decisions, faster. At Diligent, we're building the future with people who think boldly and move fast. Whether you're designing systems that leverage large language models or part of a team reimaging workflows with AI, you'll help us unlock entirely new ways of working and thinking. Curiosity is in our DNA, we look for individuals willing to ask the big questions and experiment fearlessly - those who embrace change not as a challenge, but as an opportunity.
About Us - Diligent is the AI leader in governance, risk and compliance (GRC) SaaS solutions, helping more than 1 million users and 700,000 board members to clarify risk and elevate governance. The Diligent One Platform gives practitioners, the C-Suite and the board a consolidated view of their entire GRC practice so they can more effectively manage risk, build greater resilience and make better decisions, faster. At Diligent, we're building the future with people who think boldly and move fast. Whether you're designing systems that leverage large language models or part of a team reimaging workflows with AI, you'll help us unlock entirely new ways of working and thinking. Curiosity is in our DNA, we look for individuals willing to ask the big questions and experiment fearlessly - those who embrace change not as a challenge, but as an opportunity.
Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But were more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 14 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks, we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA, and we have an insatiable hunger to wow! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But were more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 14 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks, we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA, and we have an insatiable hunger to wow! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
Related Jobs
Locations
- Shadwell
- The City, City (EC2)
- The City, City (EC3)
- The City, City (EC4)
- Shoreditch
- Charing Cross
- Gilwell Park
- Holloway
- Kempston
- Maida Hill
- City of London
- Central London
- West End
- East London
- Cambridge
- Reading
- Bedford
- North West London
- West London
- North London
- London
- Berkshire
- Cambridgeshire
- Bedfordshire
- Hampshire
- Oxfordshire
- Surrey
- Buckinghamshire
- Hertfordshire
- West Sussex
- South East
- East Anglia