Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations

Filters

Last 3 days
Sort byRelevance
Commute time
Locations
Salaries
Date posted
1 selected
    Type of Company
      Job types
      1 selected

        Related Jobs

        • DevOps
        • IT
        • Software Development
        • Infrastructure
        • Testing
        • Design
        • Communication
        • Technology
        • Microsoft Azure
        • Service
        • Software Engineer
        • QA Engineer
        • Senior Developer
        • Data Engineer
        • Lead Engineer

        show more
        Last 3 days
        Remove all filters

        Commute time

        Locations

        Popular searches nearby


        South East
        95









        See all jobs in Isleworth

        Salaries

        Date posted


        Last 3 days
        95



        Locations

        20 Contract API jobs in Isleworth + 20 miles

        75 exact matches jobs are outside your preferred location

        C# Developer - Trade Capture

        Harvey Nash
        London
        £600 - £800 per day
        *outside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in commodities trading, especially with derivatives and platforms like ICE, CME, NASDAQ, Trayport, or TT. * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD.
        *outside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in commodities trading, especially with derivatives and platforms like ICE, CME, NASDAQ, Trayport, or TT. * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD.
        more
        NEW
        Lead Salesforce Developer Contract (Outside IR35) Fully Remote - Day Rate: Competitive, open to negotiation - Duration: 6 months+ Working Arrangements: Fully Remote - Interview: 1 Video Call - About the Role - We are seeking an experienced Lead Salesforce Developer for a hands-on leadership role within a fast-growing, innovative financial services environment. You will take ownership of the Salesforce platform, leading a small, talented team and driving technical excellence across the business. What Youll Do * Lead the design, development, and deployment of Salesforce solutions * Collaborate with stakeholders to gather requirements and deliver tailored functionality * Manage and mentor a team of Salesforce professionals (Administrators, Analysts, and Developers) * Ensure data integrity, oversee integrations, and manage complex data models
        Lead Salesforce Developer Contract (Outside IR35) Fully Remote - Day Rate: Competitive, open to negotiation - Duration: 6 months+ Working Arrangements: Fully Remote - Interview: 1 Video Call - About the Role - We are seeking an experienced Lead Salesforce Developer for a hands-on leadership role within a fast-growing, innovative financial services environment. You will take ownership of the Salesforce platform, leading a small, talented team and driving technical excellence across the business. What Youll Do * Lead the design, development, and deployment of Salesforce solutions * Collaborate with stakeholders to gather requirements and deliver tailored functionality * Manage and mentor a team of Salesforce professionals (Administrators, Analysts, and Developers) * Ensure data integrity, oversee integrations, and manage complex data models
        more
        NEW
        4+ years automation testing skills (Selenium, Katalon, GT-UI, GT-API). * Web services testing / API testing skills is a plus.
        4+ years automation testing skills (Selenium, Katalon, GT-UI, GT-API). * Web services testing / API testing skills is a plus.
        more
        NEW
        Excellent API testing experience using Postman, Http Client, or similar tools.
        Excellent API testing experience using Postman, Http Client, or similar tools.
        NEWFEATURED
        Were looking for an Interim API Integrations Specialist to join our team on an initial 3-month contract with the potential for extension based on project requirements . * Design, develop, and maintain API integrations between internal systems & external SaaS platforms * Build & maintain API documentation & support internal teams with integration best practices * Minimum of 5 years experience in software development or system integration, including at least 2 years in API design, or technical architecture * Strong understanding of cybersecurity principles, data protection, and global compliance, with familiarity in security best practices, common controls, and OAuth2 / API authentication methods * Hands-on experience with RESTful API design and integration, workflow au
        Were looking for an Interim API Integrations Specialist to join our team on an initial 3-month contract with the potential for extension based on project requirements . * Design, develop, and maintain API integrations between internal systems & external SaaS platforms * Build & maintain API documentation & support internal teams with integration best practices * Minimum of 5 years experience in software development or system integration, including at least 2 years in API design, or technical architecture * Strong understanding of cybersecurity principles, data protection, and global compliance, with familiarity in security best practices, common controls, and OAuth2 / API authentication methods * Hands-on experience with RESTful API design and integration, workflow au
        more
        NEW
        Work closely with the team to develop new features, such as better interpretation layers, enhanced data decoding, and improved API coverage for various blockchain data.
        Work closely with the team to develop new features, such as better interpretation layers, enhanced data decoding, and improved API coverage for various blockchain data.
        more
        As an emerging leader in the $10B+ communications API market, we empower global brands to connect better with their customers, employees, and partners through transformative communications experiences. For example, Vonage API solutions empower organizations to build their custom omnichannel communications structure. This role is critical to protecting our customers and their end users from increasingly sophisticated fraud schemes and prevent bad actors from using our services while maintaining seamless user experiences across all Vonage communication API channels including voice & messaging channels..
        As an emerging leader in the $10B+ communications API market, we empower global brands to connect better with their customers, employees, and partners through transformative communications experiences. For example, Vonage API solutions empower organizations to build their custom omnichannel communications structure. This role is critical to protecting our customers and their end users from increasingly sophisticated fraud schemes and prevent bad actors from using our services while maintaining seamless user experiences across all Vonage communication API channels including voice & messaging channels..
        more
        You may also be asked to support the testing of releases for our Client API and Mobile Application. * API testing - building out automated test coverage of our RESTful Client API * Collaborate with the external contractor QA resource on specific projects (e.g. automating API testing) and as an additional resource when required
        You may also be asked to support the testing of releases for our Client API and Mobile Application. * API testing - building out automated test coverage of our RESTful Client API * Collaborate with the external contractor QA resource on specific projects (e.g. automating API testing) and as an additional resource when required
        more
        NEW
        Wallarm is the only solution that unifies best-in-class API Security and WAAP (Next-Gen WAF) capabilities to protect your entire API and web application portfolio in multi-cloud and cloud-native environments. * Recommend API security best practices, application architectures, platforms and application infrastructure required to successfully implement a complete API security solution based on Wallarm - Prior experience in API security, API management, SIEM, Software Development, DevOps, DevSecOps, or web application firewalls is preferred
        Wallarm is the only solution that unifies best-in-class API Security and WAAP (Next-Gen WAF) capabilities to protect your entire API and web application portfolio in multi-cloud and cloud-native environments. * Recommend API security best practices, application architectures, platforms and application infrastructure required to successfully implement a complete API security solution based on Wallarm - Prior experience in API security, API management, SIEM, Software Development, DevOps, DevSecOps, or web application firewalls is preferred
        more
        NEW
        Additionally, our apps and API are trusted by tens of thousands of drivers and fleets including Blue Badge innovators Motability Operations.
        Additionally, our apps and API are trusted by tens of thousands of drivers and fleets including Blue Badge innovators Motability Operations.
        more
        NEW
        We are building the first European Investment API that empowers businesses to offer seamless investment experiences to their users. We are looking for a full-time Head of Engineering to help us build a securities API for financial institutions, the first API of that kind in Europe. These teams are responsible for critical domains such as Orders, Trading Partner integrations, Position, and Wealth Management, all of which are essential for Upvests Investment API. The Brokerage Tribe plays a crucial role in the Investment API Platform, overseeing a wide range of user journey aspects. * Assume ownership of business-critical components within the Investment API, influencing its roadmap and delivering strategic impact to establish Upvest as a reliable partner. * Experience
        We are building the first European Investment API that empowers businesses to offer seamless investment experiences to their users. We are looking for a full-time Head of Engineering to help us build a securities API for financial institutions, the first API of that kind in Europe. These teams are responsible for critical domains such as Orders, Trading Partner integrations, Position, and Wealth Management, all of which are essential for Upvests Investment API. The Brokerage Tribe plays a crucial role in the Investment API Platform, overseeing a wide range of user journey aspects. * Assume ownership of business-critical components within the Investment API, influencing its roadmap and delivering strategic impact to establish Upvest as a reliable partner. * Experience
        more
        NEW
        This includes the Dune app for dashboards, our Analytics API, and Datashare services offering onchain data across 100+ EVM/non-EVM chains. * Define positioning and messaging for Dunes analytics products, including the app, Analytics API, and Datashare, across EVM chains and major ecosystems and key datasets like dex.trades, prices.usd, and tokens.transfers.
        This includes the Dune app for dashboards, our Analytics API, and Datashare services offering onchain data across 100+ EVM/non-EVM chains. * Define positioning and messaging for Dunes analytics products, including the app, Analytics API, and Datashare, across EVM chains and major ecosystems and key datasets like dex.trades, prices.usd, and tokens.transfers.
        more
        Typing is used within our Python stack to power automated documentation and API definitions * Have hands-on experience designing data flow through software, from persistent storage to API endpoints, while applying industry best practices for validation
        Typing is used within our Python stack to power automated documentation and API definitions * Have hands-on experience designing data flow through software, from persistent storage to API endpoints, while applying industry best practices for validation
        more
        Upvests Investment API is easy to integrate so that fintechs and enterprises alike can save resources and fully focus on their core business.? Were building the first European Investment API to enable any financial institution offering a wide range of efficient and transparent investment products, such as stocks and ETFs in nominal, portfolio, and fractional form. * Continuous learning: The complex yet fascinating field of investments, building an API product on a state-of-the-art tech stack, and working with the most relevant fintechs and financial institutions provide for an incredibly rewarding learning experience.
        Upvests Investment API is easy to integrate so that fintechs and enterprises alike can save resources and fully focus on their core business.? Were building the first European Investment API to enable any financial institution offering a wide range of efficient and transparent investment products, such as stocks and ETFs in nominal, portfolio, and fractional form. * Continuous learning: The complex yet fascinating field of investments, building an API product on a state-of-the-art tech stack, and working with the most relevant fintechs and financial institutions provide for an incredibly rewarding learning experience.
        more
        NEW
        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.
        more
        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.
        more
        NEW
        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
        more
        NEW
        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
        more
        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.
        more
        NEW

        Related Jobs


        show more

        Frequently Asked Questions

        How many contract API jobs are there in Isleworth?
        There are 20 contract API jobs within 20 miles of Isleworth available on CWJobs right now.

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