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        54 Permanent API jobs in Mayfair + 20 miles

        209 exact matches jobs are outside your preferred location

        Backend Engineer

        Kurt Geiger Limited
        London
        Competitive
        Understanding of Rest API's
        Understanding of Rest API's
        Knowledge of API design principles (REST APIs), authentication, and security
        Knowledge of API design principles (REST APIs), authentication, and security
        NEW
        Design, implement, and execute automated tests across multiple levels, including unit, integration, contract, API, end-to-end (e2e), and performance testing. * Experience with testing across various levels, including unit, integration, contract, API, e2e, and performance testing.
        Design, implement, and execute automated tests across multiple levels, including unit, integration, contract, API, end-to-end (e2e), and performance testing. * Experience with testing across various levels, including unit, integration, contract, API, e2e, and performance testing.
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        Play a key role in the Practice Management team contributing to frontend, API and infrastructure tasks. * You have experience building and architecting RESTful and GraphQL APIs as well as designing and implementing API integrations.
        Play a key role in the Practice Management team contributing to frontend, API and infrastructure tasks. * You have experience building and architecting RESTful and GraphQL APIs as well as designing and implementing API integrations.
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        Data Access and Availability: Control and manage access to data for internal and external stakeholders, working with our tech and API teams to ensure seamless data transfer.
        Data Access and Availability: Control and manage access to data for internal and external stakeholders, working with our tech and API teams to ensure seamless data transfer.
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        NEW
        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.
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        NEW

        Software Solutions Specialist

        Linde Material Handling (UK) Ltd
        Basingstoke, Hampshire
        Competitive
        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.
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        NEW
        Serve as the primary technical contact for advanced issues related to software, product data feeds, API integrations, and FTP * Advanced expertise in REST and SOAP API integrations and troubleshooting
        Serve as the primary technical contact for advanced issues related to software, product data feeds, API integrations, and FTP * Advanced expertise in REST and SOAP API integrations and troubleshooting
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        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
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        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.
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        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 we're 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 we're 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.
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        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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        NEW
        About iProov - iProov provides science-based biometric solutions that enable the worlds most security-conscious organizations to streamline secure remote onboarding and authentication for digital and physical access. Our award-winning liveness technology and iSOC offer unmatched resilience against deepfakes and generative AI threats while ensuring effortless, scalable user experiences. Trusted by leading governments and enterprises, including the U.S. Department of Homeland Security, U.K. Home Office, GovTech Singapore, ING, and UBS, iProov sets the standard in biometric identity assurance. This global trust is built not only on our technology but on the strength of the people behind it. For us, diversity at iProov is about reflecting the customers we serve, holding the principles of equality and inclusion at the heart of everything we do and all that we stand for, ..
        About iProov - iProov provides science-based biometric solutions that enable the worlds most security-conscious organizations to streamline secure remote onboarding and authentication for digital and physical access. Our award-winning liveness technology and iSOC offer unmatched resilience against deepfakes and generative AI threats while ensuring effortless, scalable user experiences. Trusted by leading governments and enterprises, including the U.S. Department of Homeland Security, U.K. Home Office, GovTech Singapore, ING, and UBS, iProov sets the standard in biometric identity assurance. This global trust is built not only on our technology but on the strength of the people behind it. For us, diversity at iProov is about reflecting the customers we serve, holding the principles of equality and inclusion at the heart of everything we do and all that we stand for, ..
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        NEW
        About AppyWay - AppyWay helps cities reduce carbon emissions by making it easier to manage and find parking. The company started with a simple parking app called AppyParking because street parking data wasnt easy to access or understand. This led them to create the largest database of standardized parking data in the UK. Our Traffic Suite platform empowers local authorities with best-in-class kerbside data, APIs, and tools to manage traffic orders, parking, and street space more efficiently. Now, AppyWays platform is used by cities across Europe and even in New York City. It provides parking maps, real-time availability, and cashless payment options to help drivers and delivery fleets find parking more efficiently. Theyve raised over £20 million from investors like Hyundai and Mastercard to continue growing.
        About AppyWay - AppyWay helps cities reduce carbon emissions by making it easier to manage and find parking. The company started with a simple parking app called AppyParking because street parking data wasnt easy to access or understand. This led them to create the largest database of standardized parking data in the UK. Our Traffic Suite platform empowers local authorities with best-in-class kerbside data, APIs, and tools to manage traffic orders, parking, and street space more efficiently. Now, AppyWays platform is used by cities across Europe and even in New York City. It provides parking maps, real-time availability, and cashless payment options to help drivers and delivery fleets find parking more efficiently. Theyve raised over £20 million from investors like Hyundai and Mastercard to continue growing.
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        NEW
        Ebury is a global fintech firm dedicated to empowering businesses to expand internationally through tailored and forward-thinking financial solutions. Since our founding in 2009, we've grown to a diverse team of over 1,700 professionals across 40+ offices and 29+ markets worldwide. Joining Ebury means becoming part of a collaborative and innovative environment where your contributions are valued. You'll play a key role in shaping the future of cross-border finance, while advancing your own career in a dynamic, high-growth industry. Product - Ebury London Office - Hybrid: 4 days in the office, 1 day working from home per week - We are hiring a Product Manager to join our Compliance Operations product team, with a focus on improving and scaling the client journeys that sit at the heart of our risk and regulatory operations.
        Ebury is a global fintech firm dedicated to empowering businesses to expand internationally through tailored and forward-thinking financial solutions. Since our founding in 2009, we've grown to a diverse team of over 1,700 professionals across 40+ offices and 29+ markets worldwide. Joining Ebury means becoming part of a collaborative and innovative environment where your contributions are valued. You'll play a key role in shaping the future of cross-border finance, while advancing your own career in a dynamic, high-growth industry. Product - Ebury London Office - Hybrid: 4 days in the office, 1 day working from home per week - We are hiring a Product Manager to join our Compliance Operations product team, with a focus on improving and scaling the client journeys that sit at the heart of our risk and regulatory operations.
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        Cognism is the leading provider of European B2B data and sales intelligence. Ambitious businesses of every size use our platform to discover, connect, and engage with qualified decision-makers faster and close more deals. Headquartered in London with global offices, Cognism's contact data and contextual signals are trusted by thousands of revenue teams to eliminate the guesswork from prospecting. Hybrid: This is a hybrid role, requiring you to work from our London office 3 days per week, with flexibility to work remotely on other days. YOUR ROLE As our Director of Product Management, you will lead and scale a high-performing product management team, owning the strategy, roadmap, and execution of our flagship Sales Companion product. Partnering closely with Engineering, Design, and GTM leaders, you'll ensure Sales Companion delivers measurable value to customers and dr
        Cognism is the leading provider of European B2B data and sales intelligence. Ambitious businesses of every size use our platform to discover, connect, and engage with qualified decision-makers faster and close more deals. Headquartered in London with global offices, Cognism's contact data and contextual signals are trusted by thousands of revenue teams to eliminate the guesswork from prospecting. Hybrid: This is a hybrid role, requiring you to work from our London office 3 days per week, with flexibility to work remotely on other days. YOUR ROLE As our Director of Product Management, you will lead and scale a high-performing product management team, owning the strategy, roadmap, and execution of our flagship Sales Companion product. Partnering closely with Engineering, Design, and GTM leaders, you'll ensure Sales Companion delivers measurable value to customers and dr
        more
        We are seeking an Agentic AI Engineer to join our growing AI & Data Science team. This role focuses on building, deploying, and scaling agentic AI systems autonomous, goal-driven AI agents that augment decision-making, automate complex workflows, and deliver actionable insights across Exiger's risk and compliance platforms. You will work closely with data scientists, software engineers, and product leaders to push the boundaries of applied AI in high-stakes environments. Key Responsibilities * Design, develop, and deploy agentic AI systems capable of reasoning, planning, and autonomously executing multi-step tasks. * Integrate large language models (LLMs) , vector databases, and external APIs into dynamic agent frameworks. * Collaborate with product teams to translate compliance, risk, and supply chain use cases into scalable AI-driven workflows.
        We are seeking an Agentic AI Engineer to join our growing AI & Data Science team. This role focuses on building, deploying, and scaling agentic AI systems autonomous, goal-driven AI agents that augment decision-making, automate complex workflows, and deliver actionable insights across Exiger's risk and compliance platforms. You will work closely with data scientists, software engineers, and product leaders to push the boundaries of applied AI in high-stakes environments. Key Responsibilities * Design, develop, and deploy agentic AI systems capable of reasoning, planning, and autonomously executing multi-step tasks. * Integrate large language models (LLMs) , vector databases, and external APIs into dynamic agent frameworks. * Collaborate with product teams to translate compliance, risk, and supply chain use cases into scalable AI-driven workflows.
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        Location: London, UK (Hybrid Working) Department: Investment Operations, Fund Services - Reports to: Manager, Data Production UK - Employment Type: Full-Time - We are a global investment leader committed to delivering better outcomes for millions of members. If youre passionate about data, thrive in a collaborative environment, and want to play a key role in shaping the future of investment data services in our growing London office, this is your opportunity. At AustralianSuper , were more than a super fundwere a purpose-driven organisation focused on helping members achieve their best financial position in retirement. As we continue to expand our global footprint, were looking for a dedicated Data Analyst to join our Investment Data Services team. This is a unique opportunity to support data transformation initiatives that directly impact investment decision-making a
        Location: London, UK (Hybrid Working) Department: Investment Operations, Fund Services - Reports to: Manager, Data Production UK - Employment Type: Full-Time - We are a global investment leader committed to delivering better outcomes for millions of members. If youre passionate about data, thrive in a collaborative environment, and want to play a key role in shaping the future of investment data services in our growing London office, this is your opportunity. At AustralianSuper , were more than a super fundwere a purpose-driven organisation focused on helping members achieve their best financial position in retirement. As we continue to expand our global footprint, were looking for a dedicated Data Analyst to join our Investment Data Services team. This is a unique opportunity to support data transformation initiatives that directly impact investment decision-making a
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        Job Description - Purpose of the role - To manage and develop existing and new products and/or services; and where applicable, ownership of related customer and colleague journeys, develops the product strategy, drive change through Barclays execution teams, make key decisions in the product lifecycle and own associated outcomes for customers, colleagues and the bank, achieved through appropriate service level agreements, regulatory compliance, risk management and controls. Accountabilities * Development of customer level strategies & solutions that are tailored to customers needs. * Subject Matter Expert in the applicable Product/Proposition team and be able to confidently guide and advise stakeholders at all levels in the Bank on the application of existing and new products/propositions and related customer and colleague journeys.
        Job Description - Purpose of the role - To manage and develop existing and new products and/or services; and where applicable, ownership of related customer and colleague journeys, develops the product strategy, drive change through Barclays execution teams, make key decisions in the product lifecycle and own associated outcomes for customers, colleagues and the bank, achieved through appropriate service level agreements, regulatory compliance, risk management and controls. Accountabilities * Development of customer level strategies & solutions that are tailored to customers needs. * Subject Matter Expert in the applicable Product/Proposition team and be able to confidently guide and advise stakeholders at all levels in the Bank on the application of existing and new products/propositions and related customer and colleague journeys.
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        81357 - Power System & Product Development Engineer - This Power System & Product Development Engineer will report to the Network Access Manager and will work within DSO directorate based in our London office. You will be a permanent employee. You will attract a salary of £80,574.00 and a bonus of 3%. This role can also offer blended working after probationary period (6 months) - 3 days in the office and 2 remote - Close Date: 14/09/2025 - We also provide the following additional benefits * 25 Days Annual Leave plus bank holidays. * Reservist Leave Additional 18 days full pay and 22 unpaid * Personal Pension Plan Personal contribution rates of 4% or 5% (UK Power Networks will make a corresponding contribution of 8% or 10%) * Tenancy Loan Deposit Scheme, Season Ticket Loan * Tax efficient benefits: Cycle to Work, Home & Tech, and Green Car Leasing Schemes * Occupationa
        81357 - Power System & Product Development Engineer - This Power System & Product Development Engineer will report to the Network Access Manager and will work within DSO directorate based in our London office. You will be a permanent employee. You will attract a salary of £80,574.00 and a bonus of 3%. This role can also offer blended working after probationary period (6 months) - 3 days in the office and 2 remote - Close Date: 14/09/2025 - We also provide the following additional benefits * 25 Days Annual Leave plus bank holidays. * Reservist Leave Additional 18 days full pay and 22 unpaid * Personal Pension Plan Personal contribution rates of 4% or 5% (UK Power Networks will make a corresponding contribution of 8% or 10%) * Tenancy Loan Deposit Scheme, Season Ticket Loan * Tax efficient benefits: Cycle to Work, Home & Tech, and Green Car Leasing Schemes * Occupationa
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        Frequently Asked Questions

        How many permanent API jobs are there in Mayfair?
        There are 54 permanent API jobs within 20 miles of Mayfair available on CWJobs right now.

        Where in Mayfair are these permanent jobs?
        You can find permanent jobs in Shadwell, The City, City (EC3), Frimley.

        What other similar jobs are there to permanent API jobs in Mayfair?
        As well as permanent API jobs in Mayfair, you can find permanent IT, Software Development, Management, amongst many others.