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        28 Contract API jobs in The City, City of London + 20 miles

        189 exact matches jobs are outside your preferred location

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        GRAVITEE
        London
        Competitive
        Join the API Revolution at Gravitee - Where Innovation Meets Growth - Since our beginnings in 2015, Gravitee has grown into a global force, recognised as a 2024 Gartner Magic Quadrant Leader for API Management. What started with four developers challenging the complexities of APIs has evolved into a revolutionary platform powering API and event stream ecosystems worldwide. Be part of a team thats redefining whats possible in API management, and shaping the future of digital transformation. Gravitee.io is taking APIs to the next level, we are the premier open source API platform and we want everyone to know how amazing our software is. o Ability to work for one of the fastest-growing companies and alongside some of the most talented people in the API technology sector
        Join the API Revolution at Gravitee - Where Innovation Meets Growth - Since our beginnings in 2015, Gravitee has grown into a global force, recognised as a 2024 Gartner Magic Quadrant Leader for API Management. What started with four developers challenging the complexities of APIs has evolved into a revolutionary platform powering API and event stream ecosystems worldwide. Be part of a team thats redefining whats possible in API management, and shaping the future of digital transformation. Gravitee.io is taking APIs to the next level, we are the premier open source API platform and we want everyone to know how amazing our software is. o Ability to work for one of the fastest-growing companies and alongside some of the most talented people in the API technology sector
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        You are an expert in Layer 7 products like: DDoS Protection, WAF, API Gateway, Bot Management, Certificates Manager, Rate Limiting, SSL and Page Shield.
        You are an expert in Layer 7 products like: DDoS Protection, WAF, API Gateway, Bot Management, Certificates Manager, Rate Limiting, SSL and Page Shield.
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        Provide guidance to customers who are implementing solutions using the Sprinklr API. * Analyze backend code and API requests/responses. * Create API Extensions using 3rd party API endpoints to be consumed within Sprinklr workflows. * Proven track record with API-based integrations (REST, JSON, authentication flows such as OAuth 2.0).
        Provide guidance to customers who are implementing solutions using the Sprinklr API. * Analyze backend code and API requests/responses. * Create API Extensions using 3rd party API endpoints to be consumed within Sprinklr workflows. * Proven track record with API-based integrations (REST, JSON, authentication flows such as OAuth 2.0).
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        We are a fast-growing, research-driven company building an artificial intelligence that helps online publishers overcome the challenges they face every day. Using novel AI, we are revolutionising the publishing industry and have a track record of building things that others have ruled out as impossible. Leading names from around the world rely on our product every day, including The Times, Le Monde, The Guardian, Vogue and many more. About the Role: You will work closely with our Product team and Data Scientists to define and execute on the future path for our products. * Work closely with senior engineers to design, build, and maintain back-end services and systems that support our AI-powered products, all whilst meeting launch deadlines. * Assist in the development and optimization of scalable, high-performance systems to support large volumes of data and machine ..
        We are a fast-growing, research-driven company building an artificial intelligence that helps online publishers overcome the challenges they face every day. Using novel AI, we are revolutionising the publishing industry and have a track record of building things that others have ruled out as impossible. Leading names from around the world rely on our product every day, including The Times, Le Monde, The Guardian, Vogue and many more. About the Role: You will work closely with our Product team and Data Scientists to define and execute on the future path for our products. * Work closely with senior engineers to design, build, and maintain back-end services and systems that support our AI-powered products, all whilst meeting launch deadlines. * Assist in the development and optimization of scalable, high-performance systems to support large volumes of data and machine ..
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        Were looking for a talented full-stack developer to join our growing technology team. Responsibilities * Develop and maintain user-facing features for websites and web applications. * Collaborate with designers and developers to implement new features and improve product functionality. * Optimise applications for maximum speed and scalability * Ensure cross-browser compatibility and responsiveness of websites * Conduct thorough testing and debugging of code * Stay up-to-date with emerging technologies and industry trends - Requirements - A solid understanding of CMSs, Templating languages and frameworks such as Vue.js, React and component-based design methodologies. * Must have previous agency or software company experience * Understanding of rendering pipelines and the DOM * Working knowledge of Git, Jira and a modern IDE * Good understanding of UX, Animation, timing
        Were looking for a talented full-stack developer to join our growing technology team. Responsibilities * Develop and maintain user-facing features for websites and web applications. * Collaborate with designers and developers to implement new features and improve product functionality. * Optimise applications for maximum speed and scalability * Ensure cross-browser compatibility and responsiveness of websites * Conduct thorough testing and debugging of code * Stay up-to-date with emerging technologies and industry trends - Requirements - A solid understanding of CMSs, Templating languages and frameworks such as Vue.js, React and component-based design methodologies. * Must have previous agency or software company experience * Understanding of rendering pipelines and the DOM * Working knowledge of Git, Jira and a modern IDE * Good understanding of UX, Animation, timing
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        Company Overview - IMS is a leader in connected car and telematics services. We provide services and analytics to insurers, governments, and enterprises. We are proud to be the developer of the industry-acclaimed, cloud-based connected car platform. From insurers and governments to dealerships and everyday drivers, were proud to produce technology that makes driving - Safer. Smarter. Greener. Description - The Senior Data Scientist is responsible for developing and implementing advanced data science models, machine learning algorithms, and predictive analytics solutions to drive business insights, product innovation, and operational efficiencies at IMS. This role plays a critical part in enhancing telematics, mobility, and insurance technology solutions through data-driven decision-making, statistical analysis, and AI-driven automation.
        Company Overview - IMS is a leader in connected car and telematics services. We provide services and analytics to insurers, governments, and enterprises. We are proud to be the developer of the industry-acclaimed, cloud-based connected car platform. From insurers and governments to dealerships and everyday drivers, were proud to produce technology that makes driving - Safer. Smarter. Greener. Description - The Senior Data Scientist is responsible for developing and implementing advanced data science models, machine learning algorithms, and predictive analytics solutions to drive business insights, product innovation, and operational efficiencies at IMS. This role plays a critical part in enhancing telematics, mobility, and insurance technology solutions through data-driven decision-making, statistical analysis, and AI-driven automation.
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        Join Our Journey in Transforming Data into Insights - At CluedIn, we're reshaping the future of data management with an Azure-native, graph-based Modern Master Data Management (MDM) platform that simplifies and accelerates how businesses manage their datamaking it faster, smarter, and more accessible. Trusted by global industry leaders, our technology enables organisations to unlock the full value of their data and drive meaningful transformation. As Microsoft's preferred MDM partner and the first solution integrated with Azure OpenAI, we're setting new standards for innovation in this space. Backed by five-star reviews on Gartner Peer Insights and seamless integration with Microsoft's data services, CluedIn delivers powerful, scalable solutions built for the enterprise. Our team's expertise, passion, and bold ideas drive our innovation.
        Join Our Journey in Transforming Data into Insights - At CluedIn, we're reshaping the future of data management with an Azure-native, graph-based Modern Master Data Management (MDM) platform that simplifies and accelerates how businesses manage their datamaking it faster, smarter, and more accessible. Trusted by global industry leaders, our technology enables organisations to unlock the full value of their data and drive meaningful transformation. As Microsoft's preferred MDM partner and the first solution integrated with Azure OpenAI, we're setting new standards for innovation in this space. Backed by five-star reviews on Gartner Peer Insights and seamless integration with Microsoft's data services, CluedIn delivers powerful, scalable solutions built for the enterprise. Our team's expertise, passion, and bold ideas drive our innovation.
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        About Keyrock - Since our beginnings in 2017, weve grown to be a leading change-maker in the digital asset space, renowned for our partnerships and innovation. Today, we rock with over 200 team members around the world. Our diverse team hails from 42 nationalities, with backgrounds ranging from DeFi natives to PhDs. Predominantly remote, we have hubs in London, Brussels, Singapore and Paris, and host regular online and offline hangouts to keep the crew tight. We are trading on more than 80 exchanges, and working with a wide array of asset issuers. As a well-established market maker, our distinctive expertise led us to expand rapidly. Today, our services span market making, options trading, high-frequency trading, OTC, and DeFi trading desks as well as digital asset management. Keyrock is looking to expand and establish itself as a full-service financial institution th
        About Keyrock - Since our beginnings in 2017, weve grown to be a leading change-maker in the digital asset space, renowned for our partnerships and innovation. Today, we rock with over 200 team members around the world. Our diverse team hails from 42 nationalities, with backgrounds ranging from DeFi natives to PhDs. Predominantly remote, we have hubs in London, Brussels, Singapore and Paris, and host regular online and offline hangouts to keep the crew tight. We are trading on more than 80 exchanges, and working with a wide array of asset issuers. As a well-established market maker, our distinctive expertise led us to expand rapidly. Today, our services span market making, options trading, high-frequency trading, OTC, and DeFi trading desks as well as digital asset management. Keyrock is looking to expand and establish itself as a full-service financial institution th
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        Bango enables content providers to reach more paying customers through global partnerships. Today, the Digital Vending Machine is driving the rapid growth of the subscriptions economy, powering choice and control for subscribers. The worlds largest content providers, including Amazon, Google and Microsoft trust Bango technology to reach subscribers everywhere. Bango, where people subscribe. Role - Join Bangos Product Leadership Team as a Senior Product Manager, where you will shape the future of Digital Vending Machine the backbone of subscription bundling for global businesses. The Senior Product Manager is the path Product Managers take into Product leader roles, with exposure to executive planning and cross-org influence. This role blends strategic ownership with hands-on product discovery. Youll be part of one product team to work with directly and deliver impact
        Bango enables content providers to reach more paying customers through global partnerships. Today, the Digital Vending Machine is driving the rapid growth of the subscriptions economy, powering choice and control for subscribers. The worlds largest content providers, including Amazon, Google and Microsoft trust Bango technology to reach subscribers everywhere. Bango, where people subscribe. Role - Join Bangos Product Leadership Team as a Senior Product Manager, where you will shape the future of Digital Vending Machine the backbone of subscription bundling for global businesses. The Senior Product Manager is the path Product Managers take into Product leader roles, with exposure to executive planning and cross-org influence. This role blends strategic ownership with hands-on product discovery. Youll be part of one product team to work with directly and deliver impact
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        Location - London - Employment Type - Full time - Department - Product R&D - About G2 - The Company - When you join G2, youre joining the team that helps businesses reach their peak potential by powering decisions and strategies with trusted insights from real software users. G2 is the world's largest and most trusted software marketplace. More than 100 million people annually including employees at all Fortune 500 companies use G2 to make smarter software decisions based on authentic peer reviews. Thousands of software and services companies of all sizes partner with G2 to build their reputation and grow their business including Salesforce, HubSpot, Zoom, and Adobe. To learn more about where you go for software, visit and follow us on LinkedIn. As we continue on our growth journey, we are striving to be the most trusted data source in the age of AI for informing soft
        Location - London - Employment Type - Full time - Department - Product R&D - About G2 - The Company - When you join G2, youre joining the team that helps businesses reach their peak potential by powering decisions and strategies with trusted insights from real software users. G2 is the world's largest and most trusted software marketplace. More than 100 million people annually including employees at all Fortune 500 companies use G2 to make smarter software decisions based on authentic peer reviews. Thousands of software and services companies of all sizes partner with G2 to build their reputation and grow their business including Salesforce, HubSpot, Zoom, and Adobe. To learn more about where you go for software, visit and follow us on LinkedIn. As we continue on our growth journey, we are striving to be the most trusted data source in the age of AI for informing soft
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        NEW
        Join Our Journey in Transforming Data into Insights - At CluedIn, we're reshaping the future of data management with an Azure-native, graph-based Modern Master Data Management (MDM) platform that simplifies and accelerates how businesses manage their datamaking it faster, smarter, and more accessible. Trusted by global industry leaders, our technology enables organisations to unlock the full value of their data and drive meaningful transformation. As Microsoft's preferred MDM partner and the first solution integrated with Azure OpenAI, we're setting new standards for innovation in this space. Backed by five-star reviews on Gartner Peer Insights and seamless integration with Microsoft's data services, CluedIn delivers powerful, scalable solutions built for the enterprise. Our team's expertise, passion, and bold ideas drive our innovation.
        Join Our Journey in Transforming Data into Insights - At CluedIn, we're reshaping the future of data management with an Azure-native, graph-based Modern Master Data Management (MDM) platform that simplifies and accelerates how businesses manage their datamaking it faster, smarter, and more accessible. Trusted by global industry leaders, our technology enables organisations to unlock the full value of their data and drive meaningful transformation. As Microsoft's preferred MDM partner and the first solution integrated with Azure OpenAI, we're setting new standards for innovation in this space. Backed by five-star reviews on Gartner Peer Insights and seamless integration with Microsoft's data services, CluedIn delivers powerful, scalable solutions built for the enterprise. Our team's expertise, passion, and bold ideas drive our innovation.
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        Location: Hybrid working or global position London / Berlin /Hamburg / Brussels / Milan - Type: Full-time | Senior Leadership - Reports to: CEO Designate - About Aspria - For over 25 years, the Aspria Group has been a leader in premium wellbeing, offering an exclusive collection of members' clubs and hotels across Europe. Through our luxury wellbeing brand, Aspria, and our exciting new family fitness brand, Aspresso, we enable our members to live well, find balance, and enjoy a sense of belonging. Our world-class health, fitness, and wellness experiences support this vision. About the Role - As Group IT Director, you will set the technology vision and strategy for Aspria, balancing commercial objectives, security standards, and operational efficiency. You will partner with the executive team to deliver cutting-edge solutions that support our ambition of being a premie
        Location: Hybrid working or global position London / Berlin /Hamburg / Brussels / Milan - Type: Full-time | Senior Leadership - Reports to: CEO Designate - About Aspria - For over 25 years, the Aspria Group has been a leader in premium wellbeing, offering an exclusive collection of members' clubs and hotels across Europe. Through our luxury wellbeing brand, Aspria, and our exciting new family fitness brand, Aspresso, we enable our members to live well, find balance, and enjoy a sense of belonging. Our world-class health, fitness, and wellness experiences support this vision. About the Role - As Group IT Director, you will set the technology vision and strategy for Aspria, balancing commercial objectives, security standards, and operational efficiency. You will partner with the executive team to deliver cutting-edge solutions that support our ambition of being a premie
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        Job title: Senior Oracle Fusion Analyst - Location: London, Manchester, or Dublin - hybrid working arrangements with 2/3 days per week in the office. Package: Base salary, Company Bonus Plan, Pension plan, Private Medical, Generous leave allowance, Life Insurance, Income Protection. About iNIZIO - At Inizio, we're a global team driven by a shared purpose: to reimagine health. Formed in 2022 through the coming together of Ashfield and Huntsworth, we unite decades of experience with cutting-edge capabilities to deliver impactful solutions across the commercialization journey - from discovery to post-launch. Our global network of over 10,000 experts operates across 50 countries, supporting clients with strategic insight, medical excellence, creative engagement, and real-world delivery. We work with the world's leading health and life sciences businesses to solve complex
        Job title: Senior Oracle Fusion Analyst - Location: London, Manchester, or Dublin - hybrid working arrangements with 2/3 days per week in the office. Package: Base salary, Company Bonus Plan, Pension plan, Private Medical, Generous leave allowance, Life Insurance, Income Protection. About iNIZIO - At Inizio, we're a global team driven by a shared purpose: to reimagine health. Formed in 2022 through the coming together of Ashfield and Huntsworth, we unite decades of experience with cutting-edge capabilities to deliver impactful solutions across the commercialization journey - from discovery to post-launch. Our global network of over 10,000 experts operates across 50 countries, supporting clients with strategic insight, medical excellence, creative engagement, and real-world delivery. We work with the world's leading health and life sciences businesses to solve complex
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        About us - At Xelix, we work with some of the worlds largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale-up - things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively, whilst remaining profitable. We have over 100 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun & we love to celebrate a milestone together. In this role youll grow, be challenged and help shape the future of Xelix. If youre excited about building something special with us, wed love to hear from you. About the
        About us - At Xelix, we work with some of the worlds largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale-up - things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively, whilst remaining profitable. We have over 100 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun & we love to celebrate a milestone together. In this role youll grow, be challenged and help shape the future of Xelix. If youre excited about building something special with us, wed love to hear from you. About the
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        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. Senior Fullstack Engineer - London Office - Hybrid: 4 days in the office, 1 day working from home - We're looking for a Senior Fullstack Engineer to join our new, rapidly growing Cards team. In this role, you'll work on innovative fintech products, helping to solve customer problems by leveraging data and an entrepreneurial spirit.
        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. Senior Fullstack Engineer - London Office - Hybrid: 4 days in the office, 1 day working from home - We're looking for a Senior Fullstack Engineer to join our new, rapidly growing Cards team. In this role, you'll work on innovative fintech products, helping to solve customer problems by leveraging data and an entrepreneurial spirit.
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        Department: Technology Team: AI Location: London with hybrid ways of working Position type: Short Term Contract (Inside IR35) until the end of Dec 2026 What the hiring manager says - As an AI Data Engineer, youll be at the heart of our efforts to build open telco models and advance AI in the telecom sector. This is a unique opportunity to work with cutting-edge data engineering pipelines, collaborate with academic and industry partners, and contribute to the development of synthetic data and knowledge resources that will shape the future of telecom AI. About the Team Youll join a dynamic, cross-functional team dedicated to advancing AI capabilities in the telecom sector. Our team is growing rapidly, with a culture of collaboration and technical excellence. We value curiosity, initiative, and a drive to set new benchmarks for the industry.
        Department: Technology Team: AI Location: London with hybrid ways of working Position type: Short Term Contract (Inside IR35) until the end of Dec 2026 What the hiring manager says - As an AI Data Engineer, youll be at the heart of our efforts to build open telco models and advance AI in the telecom sector. This is a unique opportunity to work with cutting-edge data engineering pipelines, collaborate with academic and industry partners, and contribute to the development of synthetic data and knowledge resources that will shape the future of telecom AI. About the Team Youll join a dynamic, cross-functional team dedicated to advancing AI capabilities in the telecom sector. Our team is growing rapidly, with a culture of collaboration and technical excellence. We value curiosity, initiative, and a drive to set new benchmarks for the industry.
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        What were all about. It isnt often you get to be part of a tech company that, since 2016, has been innovating the data analytics market in ways no-one else can. Our technology started out in FinTech, helping tackle serious criminal activity. Now, its potential is virtually limitless. Working at Quantexa isn't just intellectually stimulating. Were a real team. Collaborating and constantly engineering better and better solutions. Were ambitious, we think things through and were on a mission to discover just how far we can go. Nearly half of our colleagues come from an ethnic or religious minority background. Were made up of people from 47 nationalities who speak over 20 languages. As a diverse mix of individuals, we make one big unstoppable team. If our incredible culture sounds like you, wed love you to join us. Our Product Management team is growing.
        What were all about. It isnt often you get to be part of a tech company that, since 2016, has been innovating the data analytics market in ways no-one else can. Our technology started out in FinTech, helping tackle serious criminal activity. Now, its potential is virtually limitless. Working at Quantexa isn't just intellectually stimulating. Were a real team. Collaborating and constantly engineering better and better solutions. Were ambitious, we think things through and were on a mission to discover just how far we can go. Nearly half of our colleagues come from an ethnic or religious minority background. Were made up of people from 47 nationalities who speak over 20 languages. As a diverse mix of individuals, we make one big unstoppable team. If our incredible culture sounds like you, wed love you to join us. Our Product Management team is growing.
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        Frequently Asked Questions

        How many contract API jobs are there in The City, City of London?
        There are 28 contract API jobs within 20 miles of The City, City of London available on CWJobs right now.

        Where in The City, City of London are these contract jobs?
        You can find contract jobs in Southwark, The City, City (EC4), Charing Cross.

        What other similar jobs are there to contract API jobs in The City, City of London?
        As well as contract API jobs in The City, City of London, you can find contract IT, Software Development, Infrastructure, amongst many others.