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        20 Contract API jobs in Mayfair + 20 miles

        119 exact matches jobs are outside your preferred location

        Intermediate Test Analyst

        Gentrack
        London
        Competitive
        Experience of working with REST API
        Experience of working with REST API
        The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
        The Runa API empowers thousands of businesses to make payments to 5 billion+ consumers in 190+ countries instantly to cards, wallets, bank accounts and gift cards.
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        NEW
        Our core technology is a proprietary suite of real-time indicators and predictive analytics available via web application, custom dashboards and API. * Understand the importance of design best practices, provide effective translation to code artifacts and implement appropriate integration approach for API/data layer.
        Our core technology is a proprietary suite of real-time indicators and predictive analytics available via web application, custom dashboards and API. * Understand the importance of design best practices, provide effective translation to code artifacts and implement appropriate integration approach for API/data layer.
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        NEW
        Experience with Akamai Edge solutions for OT/cloud API protection.
        Experience with Akamai Edge solutions for OT/cloud API protection.
        NEWFEATURED
        You will lead the security of high-performance computing (HPC) environments and associated systems, leveraging Akamai Edge solutions (e.g., Kona Site Defender, Edge DNS, App & API Protector) to protect classified infrastructure. * Design and implement security strategies for HPC environments and defence systems, integrating Akamai Edge solutions for DDoS mitigation, WAF, and API protection. * Expertise in Akamai Edge solutions (e.g., Kona Site Defender, Edge DNS, EdgeWorkers) for DDoS, WAF, and API protection.
        You will lead the security of high-performance computing (HPC) environments and associated systems, leveraging Akamai Edge solutions (e.g., Kona Site Defender, Edge DNS, App & API Protector) to protect classified infrastructure. * Design and implement security strategies for HPC environments and defence systems, integrating Akamai Edge solutions for DDoS mitigation, WAF, and API protection. * Expertise in Akamai Edge solutions (e.g., Kona Site Defender, Edge DNS, EdgeWorkers) for DDoS, WAF, and API protection.
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        NEWFEATURED
        Contract Role: Prompt Engineer (Salesforce & Generative AI Integration) Duration: 4–5 months (November – March) Hourly Rate: £54.60 - £60/hour inside IR35 - Location: Fully Remote (UK-based candidates only) Overview - We are seeking a highly skilled Prompt Engineer with deep expertise in the Salesforce platform and hands-on experience in Generative AI integration. This role bridges the gap between business requirements and intelligent automation, crafting high-impact prompts and embedding AI capabilities into Salesforce workflows to enhance customer experience and operational efficiency. Key Responsibilities - Salesforce Platform Expertise * Design and configure Salesforce objects, data models, and automation using Flows, Apex, and Lightning Web Components (LWC). * Leverage Service Cloud and Sales Cloud functionality to support AI-driven use cases.
        Contract Role: Prompt Engineer (Salesforce & Generative AI Integration) Duration: 4–5 months (November – March) Hourly Rate: £54.60 - £60/hour inside IR35 - Location: Fully Remote (UK-based candidates only) Overview - We are seeking a highly skilled Prompt Engineer with deep expertise in the Salesforce platform and hands-on experience in Generative AI integration. This role bridges the gap between business requirements and intelligent automation, crafting high-impact prompts and embedding AI capabilities into Salesforce workflows to enhance customer experience and operational efficiency. Key Responsibilities - Salesforce Platform Expertise * Design and configure Salesforce objects, data models, and automation using Flows, Apex, and Lightning Web Components (LWC). * Leverage Service Cloud and Sales Cloud functionality to support AI-driven use cases.
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        NEW
        Cybersecurity Incident Response Specialist - CONTRACT OPPORTUNITY * Remote with occasional trips to London (not expensed). * £750.00 per day. * 6 months. * ASAP start, ASAP interviews. * Right to work in the UK mandatory. The Cybersecurity Incident Response Specialist will be responsible for investigating, analysing and providing specialist expertise for the resolution of security incidents / attacks aimed at the client. Support the long-term strategic goals of Cyber Operations pillar support Senior Analysts and Analysts in managing incidents and liaise with SOC engineers to ensure appropriate security measures, technologies and processes are in place to avoid reoccurrence of incidents. * Demonstrate an ability to understand in detail how an incident has occurred without relying on alerts (e.g., reviewing logs and threat intelligence data).
        Cybersecurity Incident Response Specialist - CONTRACT OPPORTUNITY * Remote with occasional trips to London (not expensed). * £750.00 per day. * 6 months. * ASAP start, ASAP interviews. * Right to work in the UK mandatory. The Cybersecurity Incident Response Specialist will be responsible for investigating, analysing and providing specialist expertise for the resolution of security incidents / attacks aimed at the client. Support the long-term strategic goals of Cyber Operations pillar support Senior Analysts and Analysts in managing incidents and liaise with SOC engineers to ensure appropriate security measures, technologies and processes are in place to avoid reoccurrence of incidents. * Demonstrate an ability to understand in detail how an incident has occurred without relying on alerts (e.g., reviewing logs and threat intelligence data).
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        NEW
        Experience interacting with a variety of API technologies, such as REST, JSON and XML * Experience working with AWS, using services such as ECS, S3 and API Gateway (Optional)
        Experience interacting with a variety of API technologies, such as REST, JSON and XML * Experience working with AWS, using services such as ECS, S3 and API Gateway (Optional)
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        NEW
        Implement and optimize robust API integrations (REST and GraphQL) with backend systems. * Reliable delivery of API-driven features that meet product requirements. * Demonstrated experience building and maintaining API integrations (REST, GraphQL, or gRPC).
        Implement and optimize robust API integrations (REST and GraphQL) with backend systems. * Reliable delivery of API-driven features that meet product requirements. * Demonstrated experience building and maintaining API integrations (REST, GraphQL, or gRPC).
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        Advanced understanding of good practice API development, integration, and testing (e.g. RESTful services, GraphQL). * Experience with both front-end (e.g. React, TypeScript) and back-end (.NET C#, ASP.NET) development, especially related to API consumption good practices such as schema validation, or event-driven architectures (e.g. webhooks).
        Advanced understanding of good practice API development, integration, and testing (e.g. RESTful services, GraphQL). * Experience with both front-end (e.g. React, TypeScript) and back-end (.NET C#, ASP.NET) development, especially related to API consumption good practices such as schema validation, or event-driven architectures (e.g. webhooks).
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        Institutional User Experience (UX/API) This includes driving excellence across both the Web UI and API architecture, ensuring resilience, scalability, and ease of integration for institutional clients. * Proven ability to translate complex financial and security requirements into intuitive, compliance-aware user journeys for web platforms and B2B API integrations.
        Institutional User Experience (UX/API) This includes driving excellence across both the Web UI and API architecture, ensuring resilience, scalability, and ease of integration for institutional clients. * Proven ability to translate complex financial and security requirements into intuitive, compliance-aware user journeys for web platforms and B2B API integrations.
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        We are seeking a highly driven and technically proficient Infrastructure Team Leader to join our growing team. This is a key leadership role responsible for ensuring the stability, performance, scalability, and cost-efficiency of our infrastructure environment, with a strong emphasis on cloud technologiesprimarily AWS. As the Infrastructure Team Lead, you will manage a small, skilled team and oversee the day-to-day operations of our systems. You will work closely with software engineering, DevOps, security, and business stakeholders to support strategic goals, ensure high availability of services, and optimise system costs and performance. Benefits * Holidays: 25-30 days of annual leave (plus bank holidays), with increased entitlement based on service. * Competitive Salary: Up £52,000 - £58,000 based on experience * Nest Pension scheme * Discretionary company bonus
        We are seeking a highly driven and technically proficient Infrastructure Team Leader to join our growing team. This is a key leadership role responsible for ensuring the stability, performance, scalability, and cost-efficiency of our infrastructure environment, with a strong emphasis on cloud technologiesprimarily AWS. As the Infrastructure Team Lead, you will manage a small, skilled team and oversee the day-to-day operations of our systems. You will work closely with software engineering, DevOps, security, and business stakeholders to support strategic goals, ensure high availability of services, and optimise system costs and performance. Benefits * Holidays: 25-30 days of annual leave (plus bank holidays), with increased entitlement based on service. * Competitive Salary: Up £52,000 - £58,000 based on experience * Nest Pension scheme * Discretionary company bonus
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        NEW
        Summary: VIAVI has a 90+ year history of technical innovations that have evolved to keep pace and address our customers most pressing business issues. We make equipment, software, and systems that help to plan, deploy, certify, monitor, and optimize all kinds of networks - like those for mobile phones, service providers, large businesses, and data centers. And we are also at the forefront of optical security we bend light to develop and deliver optical solutions that provide security to the worlds currencies and safety and performance applications for consumer electronics and spectrometry. We are the people behind the products that help keep the world connected at home, school, work, at play, and everywhere in between. VIAVI employees are fierce about supporting customer success and we welcome people who bring their best every day to the company - to question, to ...
        Summary: VIAVI has a 90+ year history of technical innovations that have evolved to keep pace and address our customers most pressing business issues. We make equipment, software, and systems that help to plan, deploy, certify, monitor, and optimize all kinds of networks - like those for mobile phones, service providers, large businesses, and data centers. And we are also at the forefront of optical security we bend light to develop and deliver optical solutions that provide security to the worlds currencies and safety and performance applications for consumer electronics and spectrometry. We are the people behind the products that help keep the world connected at home, school, work, at play, and everywhere in between. VIAVI employees are fierce about supporting customer success and we welcome people who bring their best every day to the company - to question, to ...
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        NEW
        Every day, somewhere in the world, important decisions are made. Whether it is a private equity company deciding to invest millions into a business or a large corporation implementing a new strategic direction, these decisions impact employees, customers, and other stakeholders. Consulting and private equity firms come to proSapient when they need to discover knowledge to help them make great decisions and succeed in their goals. It is our mission to support them in their discovery of knowledge. We help our clients find industry experts who can provide their knowledge via interview or survey: we curate this knowledge in a market-leading software platform; and we help clients surface knowledge they already have through expansive knowledge management. We are seeking an AI/ML Engineer to contribute to our AI/ML initiatives with a strong emphasis on practical software ...
        Every day, somewhere in the world, important decisions are made. Whether it is a private equity company deciding to invest millions into a business or a large corporation implementing a new strategic direction, these decisions impact employees, customers, and other stakeholders. Consulting and private equity firms come to proSapient when they need to discover knowledge to help them make great decisions and succeed in their goals. It is our mission to support them in their discovery of knowledge. We help our clients find industry experts who can provide their knowledge via interview or survey: we curate this knowledge in a market-leading software platform; and we help clients surface knowledge they already have through expansive knowledge management. We are seeking an AI/ML Engineer to contribute to our AI/ML initiatives with a strong emphasis on practical software ...
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        NEW
        As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasnt changed were here to stop breaches, and weve redefined modern security with the worlds most advanced AI-native platform. Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. Were also a mission-driven company. We cultivate a culture that gives every CrowdStriker both the flexibility and autonomy to own their careers. Were always looking to add talented CrowdStrikers to the team who have limitless passion, a relentless focus on innovation and a fanatical commitment to our customers, our community and each other. Ready to join a mission that matters? The future of cybersecurity starts with you.
        As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasnt changed were here to stop breaches, and weve redefined modern security with the worlds most advanced AI-native platform. Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. Were also a mission-driven company. We cultivate a culture that gives every CrowdStriker both the flexibility and autonomy to own their careers. Were always looking to add talented CrowdStrikers to the team who have limitless passion, a relentless focus on innovation and a fanatical commitment to our customers, our community and each other. Ready to join a mission that matters? The future of cybersecurity starts with you.
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        NEW
        About Us - At Netwrix, our mission is to revolutionize data security by placing identity at the core - providing unparalleled visibility and control. Engineered and supported by over 900 highly talented, motivated employees and hundreds of trusted partners in nearly every geography, Netwrix solutions are relied upon daily by security professionals across more than 13,500 organizations in over 100 countries around the world. Over the past two decades, Netwrix has expanded its market presence through innovation, organic growth, and strategic acquisitions, and are proud to be backed by renowned private equity firms, TA Associates and Centerbridge Partners. Netwrix maintains a global presence, fostering a remote-first work environment while encouraging and facilitating frequent face-to-face interaction with colleagues, customers, and partners. Position Overview
        About Us - At Netwrix, our mission is to revolutionize data security by placing identity at the core - providing unparalleled visibility and control. Engineered and supported by over 900 highly talented, motivated employees and hundreds of trusted partners in nearly every geography, Netwrix solutions are relied upon daily by security professionals across more than 13,500 organizations in over 100 countries around the world. Over the past two decades, Netwrix has expanded its market presence through innovation, organic growth, and strategic acquisitions, and are proud to be backed by renowned private equity firms, TA Associates and Centerbridge Partners. Netwrix maintains a global presence, fostering a remote-first work environment while encouraging and facilitating frequent face-to-face interaction with colleagues, customers, and partners. Position Overview
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        Frequently Asked Questions

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

        Where in Mayfair are these contract jobs?
        You can find contract jobs in Southwark, The City, City (EC4), Frimley.

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