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        49 Permanent API jobs in Mayfair + 20 miles

        135 exact matches jobs are outside your preferred location

        QA Engineer

        Networker Global Limited
        London
        Negotiable
        Role: QA Engineer - Location: London - Type: Hybrid / Remote - Salary: TBC - Contract Type: Permanent - Myn is an AI driven marketplace that connects the candidates, clients and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched permanent positions. Our Recruitment Partners all have extensive industry experience, and work with a select group of niche clients, to deliver the best possible experience to the candidate. We are working with a fast-growing, product-led tech company and we are looking for a QA Engineer whos passionate about catching bugs, improving processes and making sure every release is rock solid. * Design and execute manual and automated test plans across web and mobile platforms * Collaborate with developers, designers, and PMs to ensure quality from ideation to release
        Role: QA Engineer - Location: London - Type: Hybrid / Remote - Salary: TBC - Contract Type: Permanent - Myn is an AI driven marketplace that connects the candidates, clients and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched permanent positions. Our Recruitment Partners all have extensive industry experience, and work with a select group of niche clients, to deliver the best possible experience to the candidate. We are working with a fast-growing, product-led tech company and we are looking for a QA Engineer whos passionate about catching bugs, improving processes and making sure every release is rock solid. * Design and execute manual and automated test plans across web and mobile platforms * Collaborate with developers, designers, and PMs to ensure quality from ideation to release
        more
        Role Full Stack Developer - Location - London (Remote) Salary - £70K - £85K - Role Type Permanent - Myn is an AI driven marketplace that connects the candidates, clients and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched permanent positions. Overview - Are you a talented Full Stack Developer eager to make an immediate impact on exciting projects? Our client is seeking an experienced Full Stack development professional for a hybrid position to be based in Central London, but operating remotely * Design and implement robust web applications using cutting-edge technologies and frameworks. * Collaborate with cross-functional teams to drive the full development lifecycle, from concept to deployment. * Engage in continuous learning and professional development, enhancing your skills and career prospects.
        Role Full Stack Developer - Location - London (Remote) Salary - £70K - £85K - Role Type Permanent - Myn is an AI driven marketplace that connects the candidates, clients and recruiters. Myn collaborates with leading employers to offer exclusive, carefully matched permanent positions. Overview - Are you a talented Full Stack Developer eager to make an immediate impact on exciting projects? Our client is seeking an experienced Full Stack development professional for a hybrid position to be based in Central London, but operating remotely * Design and implement robust web applications using cutting-edge technologies and frameworks. * Collaborate with cross-functional teams to drive the full development lifecycle, from concept to deployment. * Engage in continuous learning and professional development, enhancing your skills and career prospects.
        more
        Job Title: Observability Developer / Engineer - Location: Hybrid (UK, with travel as required) Employment Type: Full-time - This role is with Morela please respond to for further informaiton - Do you want to be part of something special? Morela is proud to represent our exclusive client, a fast-growing start-up transforming Service Operations. Led by industry leaders with a proven track record of building and scaling successful businesses, this company is redefining how enterprises monitor, manage, and optimise IT operations. This is your chance to join a team shaping the future of observability and operational intelligence from the ground up. We are seeking a skilled Observability Developer to design, build, and optimise observability solutions that help enterprise clients gain actionable insights from their logs, metrics, traces, and events.
        Job Title: Observability Developer / Engineer - Location: Hybrid (UK, with travel as required) Employment Type: Full-time - This role is with Morela please respond to for further informaiton - Do you want to be part of something special? Morela is proud to represent our exclusive client, a fast-growing start-up transforming Service Operations. Led by industry leaders with a proven track record of building and scaling successful businesses, this company is redefining how enterprises monitor, manage, and optimise IT operations. This is your chance to join a team shaping the future of observability and operational intelligence from the ground up. We are seeking a skilled Observability Developer to design, build, and optimise observability solutions that help enterprise clients gain actionable insights from their logs, metrics, traces, and events.
        more

        Data Engineer - AI Projects

        Henderson Scott
        Stevenage, Hertfordshire, SG1 2DA
        £50000.00 - £55000.00 per annum + Bonus, + Substantial Benefits
        Data Engineer - Generative AI Projects?? Hybrid | 2-3 Days On-Site | Up to £55,000 + Bonus + Package?? British Citizens Only | BPSS Clearance Required - We're hiring a Data Engineer with a passion for automation, clean pipelines, and the future of AI. This is your chance to shape how data powers Generative AI and NLP tools in a secure, high-tech organisation working on projects that matter. If you're keen to work on innovative internal use-cases - from AI assistants to intelligent search and document automation - this is the perfect next step. What You'll Be Doing * Building and maintaining data pipelines across structured & unstructured sources * Collaborating with internal teams to support Generative AI and NLP projects * Ensuring data is secure, compliant, high-quality, and easy to access * Bringing your ideas to the table as we explore new tools and technologies
        Data Engineer - Generative AI Projects?? Hybrid | 2-3 Days On-Site | Up to £55,000 + Bonus + Package?? British Citizens Only | BPSS Clearance Required - We're hiring a Data Engineer with a passion for automation, clean pipelines, and the future of AI. This is your chance to shape how data powers Generative AI and NLP tools in a secure, high-tech organisation working on projects that matter. If you're keen to work on innovative internal use-cases - from AI assistants to intelligent search and document automation - this is the perfect next step. What You'll Be Doing * Building and maintaining data pipelines across structured & unstructured sources * Collaborating with internal teams to support Generative AI and NLP projects * Ensuring data is secure, compliant, high-quality, and easy to access * Bringing your ideas to the table as we explore new tools and technologies
        more
        FEATURED

        SDET-Java

        Randstad Digital
        RH15, Burgess Hill
        £55000 - £60000 per annum
        Knowledge of the following tools Cucumber Godog or other BDD tools Kubernetes Docker Rest Assured Rest or other REST API testing tools Wiremock Mountebank or other HTTP stubbing tools
        Knowledge of the following tools Cucumber Godog or other BDD tools Kubernetes Docker Rest Assured Rest or other REST API testing tools Wiremock Mountebank or other HTTP stubbing tools
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        NEWFEATURED
        Experience with some of the technologies we make use of: Groovy, Python, AWS Serverless (API Gateway, Lambdas), XML, JSON, Open API, virtualisation in general and especially Docker and its eco system, Git, NoSQL products and concepts (Dynamo, column family, etc.)
        Experience with some of the technologies we make use of: Groovy, Python, AWS Serverless (API Gateway, Lambdas), XML, JSON, Open API, virtualisation in general and especially Docker and its eco system, Git, NoSQL products and concepts (Dynamo, column family, etc.)
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        NEW

        CTO

        Leo Technology
        GU31, Petersfield, G U31
        £100000 - £120000 per annum + Equity options
        Experience with API design and development for both internal and external use cases
        Experience with API design and development for both internal and external use cases
        NEW
        Provide expertise in the planning, constructing and execution of test scripts from the initial stages of the project until the implementation of the product (Web, Mobile, and API)
        Provide expertise in the planning, constructing and execution of test scripts from the initial stages of the project until the implementation of the product (Web, Mobile, and API)
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        NEW
        Sprinklr is a leading enterprise software company for all customer-facing functions. With advanced AI, Sprinklr's unified customer experience management (Unified-CXM) platform helps companies deliver human experiences to every customer, every time, across any modern channel. Headquartered in New York City with employees around the world, Sprinklr works with more than 1,000 of the worlds most valuable enterprises global brands like Microsoft, P&G, Samsung and more than 50% of the Fortune 100. Learn more about our culture and how we make our employees happier through The Sprinklr Way. Job Description - The Sprinklr TPA plays a key role in crafting and executing robust implementations for enterprise-grade customers, utilising Sprinklr's suite of products and services. The TPA serves as the technical lead driving the design, deployment, and optimisation of scalable Sprink
        Sprinklr is a leading enterprise software company for all customer-facing functions. With advanced AI, Sprinklr's unified customer experience management (Unified-CXM) platform helps companies deliver human experiences to every customer, every time, across any modern channel. Headquartered in New York City with employees around the world, Sprinklr works with more than 1,000 of the worlds most valuable enterprises global brands like Microsoft, P&G, Samsung and more than 50% of the Fortune 100. Learn more about our culture and how we make our employees happier through The Sprinklr Way. Job Description - The Sprinklr TPA plays a key role in crafting and executing robust implementations for enterprise-grade customers, utilising Sprinklr's suite of products and services. The TPA serves as the technical lead driving the design, deployment, and optimisation of scalable Sprink
        more
        NEW
        This post is eligible for a Digital, Data and Technology (DDT) capability based pay (CBP) allowance. This is a discretionary non-consolidated, non-pensionable allowance which, if awarded, is attached to the post. The value of the allowance is based on the outcome of a capability assessment and is reviewed annually. Allowance values range up to £19,400, with the highest values reserved for candidates whose capability is above the expected level for all of the skills. A Civil Service Pension with an employer contribution of 28.97% GBP Job grade Grade 7 Contract type Permanent Business area DFE - Operations and Infrastructure Group Type of role Digital Working pattern Flexible working, Full-time, Job share, Part-time Number of jobs available 3 Contents * Location * About the job * Benefits * Things you need to know * Apply and further information
        This post is eligible for a Digital, Data and Technology (DDT) capability based pay (CBP) allowance. This is a discretionary non-consolidated, non-pensionable allowance which, if awarded, is attached to the post. The value of the allowance is based on the outcome of a capability assessment and is reviewed annually. Allowance values range up to £19,400, with the highest values reserved for candidates whose capability is above the expected level for all of the skills. A Civil Service Pension with an employer contribution of 28.97% GBP Job grade Grade 7 Contract type Permanent Business area DFE - Operations and Infrastructure Group Type of role Digital Working pattern Flexible working, Full-time, Job share, Part-time Number of jobs available 3 Contents * Location * About the job * Benefits * Things you need to know * Apply and further information
        more
        This position will serve as the bridge between development, operations, and integration teams - ensuring automated deployments, robust monitoring, and efficient API/data exchange processes that support business objectives. * Strong hands-on experience with AWS core services (EC2, ECS/EKS, Lambda, S3, RDS, IAM, API Gateway, CloudFormation/Terraform).
        This position will serve as the bridge between development, operations, and integration teams - ensuring automated deployments, robust monitoring, and efficient API/data exchange processes that support business objectives. * Strong hands-on experience with AWS core services (EC2, ECS/EKS, Lambda, S3, RDS, IAM, API Gateway, CloudFormation/Terraform).
        more
        Curve is a next-gen insights, analytics and technology consultancy that leverages digital consumer data and advanced technology to help businesses unlock consumer opportunities. Digital consumer data is powerful; its big, its real, and its always updating. We use a combination of in-house technology and bespoke solutions, powered by AI, to transform data from sources such as Social, Reviews, Search, and broader marketing and sales data. These reveal fresh insights for our clients; helping them to build better products and brands, to deliver effective marketing to consumers. 1. Natural Language Processing, GPT & other LLMs - 2. Marketing Data Science & Personalisation - 3. Data Engineering & Data Architecture - 4. As a start-up, we can move faster than most companies and do things differently. We have experienced rapid growth so far and were looking for a Senior Data E
        Curve is a next-gen insights, analytics and technology consultancy that leverages digital consumer data and advanced technology to help businesses unlock consumer opportunities. Digital consumer data is powerful; its big, its real, and its always updating. We use a combination of in-house technology and bespoke solutions, powered by AI, to transform data from sources such as Social, Reviews, Search, and broader marketing and sales data. These reveal fresh insights for our clients; helping them to build better products and brands, to deliver effective marketing to consumers. 1. Natural Language Processing, GPT & other LLMs - 2. Marketing Data Science & Personalisation - 3. Data Engineering & Data Architecture - 4. As a start-up, we can move faster than most companies and do things differently. We have experienced rapid growth so far and were looking for a Senior Data E
        more
        NEW
        Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
        Mastercard Developers ( is the primary API platform for Mastercard partners to access a diverse range of payment, data, loyalty, and security APIs. The team is responsible for delivering an experience that ensures developers can quickly find the right API, assess its technical capabilities and integrate it into new and innovative solutions. Act as subject matter expert for Mastercard Developers API Platform and services to support customer integrations on occasion - Proven track record in API based products
        more
        NEW
        You'll work across modern architectures, leveraging containerisation, event-driven design, and API-first principles to solve complex integration challenges. * Design and manage secure REST/GraphQL APIs via API Gateway, including authentication, throttling, and schema validation. * Apply best practices in Kubernetes and API security, including TLS, KMS, RBAC, and service-to-service authentication. * Strong API design and security expertise (OpenAPI, OAuth2, JWT).
        You'll work across modern architectures, leveraging containerisation, event-driven design, and API-first principles to solve complex integration challenges. * Design and manage secure REST/GraphQL APIs via API Gateway, including authentication, throttling, and schema validation. * Apply best practices in Kubernetes and API security, including TLS, KMS, RBAC, and service-to-service authentication. * Strong API design and security expertise (OpenAPI, OAuth2, JWT).
        more
        PREMIUM

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        Frequently Asked Questions

        How many permanent API jobs are there in Mayfair?
        There are 49 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 The City, City (EC3), Canary Wharf, Euston.

        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, Architecture, amongst many others.