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        • Hertfordshire

        51 Permanent API jobs in Hertford + 20 miles

        302 exact matches jobs are outside your preferred location

        Senior Web Engineer

        Depop
        London
        Competitive
        Experience consuming RESTful API services * Experience writing RESTful API services, either in Javascript or TypeScript
        Experience consuming RESTful API services * Experience writing RESTful API services, either in Javascript or TypeScript
        more
        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
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        NEW
        IT Jobs in Poland With Work Sponsorship / VISA Hiring at Infinity Quest (Please apply if you are currently in Poland) Already living in Poland? We're hiring experienced tech professionals for global projects - full work permit provided. Only candidates based in Poland will be considered. 1. DevOps Engineer (AWS / Azure / GCP | CI/CD | Terraform / Ansible | Kubernetes) 2. Cloud Data Engineer (AWS (Redshift, Glue) / Azure (ADF, Synapse) / GCP (BigQuery, Dataflow) | Python | SQL | Spark | DBT) 3. Full Stack Engineer (React / Angular | Java / Python / Node.js | Cloud) 4. Java Backend Developer (Java | Spring Boot | Microservices | Cloud Platforms) 5. Data Engineer (Power BI / MSBI | Python | SQL | Snowflake) 6. Data Scientist / ML Engineer (Python | Pandas | TensorFlow / PyTorch | Data Modelling) 7. Golang Developer (Golang | REST APIs | Concurrency | Cloud-native develop
        IT Jobs in Poland With Work Sponsorship / VISA Hiring at Infinity Quest (Please apply if you are currently in Poland) Already living in Poland? We're hiring experienced tech professionals for global projects - full work permit provided. Only candidates based in Poland will be considered. 1. DevOps Engineer (AWS / Azure / GCP | CI/CD | Terraform / Ansible | Kubernetes) 2. Cloud Data Engineer (AWS (Redshift, Glue) / Azure (ADF, Synapse) / GCP (BigQuery, Dataflow) | Python | SQL | Spark | DBT) 3. Full Stack Engineer (React / Angular | Java / Python / Node.js | Cloud) 4. Java Backend Developer (Java | Spring Boot | Microservices | Cloud Platforms) 5. Data Engineer (Power BI / MSBI | Python | SQL | Snowflake) 6. Data Scientist / ML Engineer (Python | Pandas | TensorFlow / PyTorch | Data Modelling) 7. Golang Developer (Golang | REST APIs | Concurrency | Cloud-native develop
        more
        Howdens Joinery are looking for a new Solutions Architect with expert experience in API and Microservices to join our Digital & Trade Architecture team based in either our office in Raunds, Northamptonshire or Croxley Park, Watford with some home working.
        Howdens Joinery are looking for a new Solutions Architect with expert experience in API and Microservices to join our Digital & Trade Architecture team based in either our office in Raunds, Northamptonshire or Croxley Park, Watford with some home working.
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        NEW
        Experience working with software systems including querying, SQL scripting, and working with API development * Technical understanding of Meta advertising products (including Ads and Pages API, Identity Platform) * Experience working with API documents, calling APIs using scripts, and testing APIs
        Experience working with software systems including querying, SQL scripting, and working with API development * Technical understanding of Meta advertising products (including Ads and Pages API, Identity Platform) * Experience working with API documents, calling APIs using scripts, and testing APIs
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        Senior SDET

        Anson Mccade
        South East
        GBP 600.00 per week;GBP 600.00 per day
        API testing using coded frameworks and Postman.
        API testing using coded frameworks and Postman.
        PREMIUM
        To complement the efficient networking architecture, you will help designing Infrastructure-as-a-Service virtual network orchestration API-driven services to support tenants workloads security and performance SLAs for BMaaS, VMaaS and Kubernetes. * Hands-on experience developing secure and performant API-driven services (gRPC, ReST with transport encryption and strong authentication)
        To complement the efficient networking architecture, you will help designing Infrastructure-as-a-Service virtual network orchestration API-driven services to support tenants workloads security and performance SLAs for BMaaS, VMaaS and Kubernetes. * Hands-on experience developing secure and performant API-driven services (gRPC, ReST with transport encryption and strong authentication)
        more
        NEW
        Code quality and API-First principles are at the heart of all our development. * Deliver high efficiency, high availability, concurrent and fault tolerant software systems using API-First principles. * An interest in setting strategy and direction, backed by real-work experience, ideally in an API-First setting. * Experience designing, building, and deploying scalable micro-services using API-First principles using at least one of REST/gRPC. * Strong understanding of RESTful API design principles and best practices. * Experience with API authentication and authorization mechanisms (e.g., OAuth, JWT). * Experience with API gateway technologies (e.g., Apigee, Kong) is beneficial.
        Code quality and API-First principles are at the heart of all our development. * Deliver high efficiency, high availability, concurrent and fault tolerant software systems using API-First principles. * An interest in setting strategy and direction, backed by real-work experience, ideally in an API-First setting. * Experience designing, building, and deploying scalable micro-services using API-First principles using at least one of REST/gRPC. * Strong understanding of RESTful API design principles and best practices. * Experience with API authentication and authorization mechanisms (e.g., OAuth, JWT). * Experience with API gateway technologies (e.g., Apigee, Kong) is beneficial.
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        NEW
        Performing automation and API testing when required. * API automation testing using JavaScript * Experience in API and integration testing
        Performing automation and API testing when required. * API automation testing using JavaScript * Experience in API and integration testing
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        NEW
        The primary responsibility of the CI group is to work with broker-dealers and institutional clients to help them integrate their systems to the MarketAxess Fixed Income trading system via Application Programming Interfaces (API). * FIX API integration for various fixed income products as well as Post-Trade and Data API products. * Work closely with Product Owners and customers on the deployment of new API functionality and workflows and implement features with client requirements/needs in mind
        The primary responsibility of the CI group is to work with broker-dealers and institutional clients to help them integrate their systems to the MarketAxess Fixed Income trading system via Application Programming Interfaces (API). * FIX API integration for various fixed income products as well as Post-Trade and Data API products. * Work closely with Product Owners and customers on the deployment of new API functionality and workflows and implement features with client requirements/needs in mind
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        NEW
        To get the best candidate experience, please consider applying for a maximum of 3 roles within 12 months to ensure you are not duplicating efforts. Job Category - Sales - Job Details - About Salesforce - Salesforce is the #1 AI CRM, where humans with agents drive customer success together. Here, ambition meets action. Tech meets trust. And innovation isnt a buzzword its a way of life. The world of work as we know it is changing and we're looking for Trailblazers who are passionate about bettering business and the world through AI, driving innovation, and keeping Salesforce's core values at the heart of it all. Ready to level-up your career at the company leading workforce transformation in the agentic era? Youre in the right place! Agentforce is the future of AI, and you are the future of Salesforce. As an Agentforce Technical Architect, youll act as a trusted advisor
        To get the best candidate experience, please consider applying for a maximum of 3 roles within 12 months to ensure you are not duplicating efforts. Job Category - Sales - Job Details - About Salesforce - Salesforce is the #1 AI CRM, where humans with agents drive customer success together. Here, ambition meets action. Tech meets trust. And innovation isnt a buzzword its a way of life. The world of work as we know it is changing and we're looking for Trailblazers who are passionate about bettering business and the world through AI, driving innovation, and keeping Salesforce's core values at the heart of it all. Ready to level-up your career at the company leading workforce transformation in the agentic era? Youre in the right place! Agentforce is the future of AI, and you are the future of Salesforce. As an Agentforce Technical Architect, youll act as a trusted advisor
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        NEW
        LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.LSEG is headquartered in the United Kingdom, with significant ...
        LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.LSEG is headquartered in the United Kingdom, with significant ...
        more
        Security Architecture Secure Design Team - Role: Manager Principal Security Architect: Secure Design (Individual Contributor) Grade: GG14 - The Security Architecture Design team is responsible for developing Security Architecture patterns, developing security controls needed for new technology, promoting the use of the architectural patterns into development projects, leading the Security Architecture Design Forum, Evaluating architectural security risks in existing systems, consulting with system development teams and architects on building security into their design. This key task of this role is accelerating the delivery of secure design artefacts and leading secure design interventions - by adding capacity and capability to the team. Reports to: Senior Manager Secure Design - Key Relationships * Business Aligned Principal Security Architects * CyberSecurity Engine
        Security Architecture Secure Design Team - Role: Manager Principal Security Architect: Secure Design (Individual Contributor) Grade: GG14 - The Security Architecture Design team is responsible for developing Security Architecture patterns, developing security controls needed for new technology, promoting the use of the architectural patterns into development projects, leading the Security Architecture Design Forum, Evaluating architectural security risks in existing systems, consulting with system development teams and architects on building security into their design. This key task of this role is accelerating the delivery of secure design artefacts and leading secure design interventions - by adding capacity and capability to the team. Reports to: Senior Manager Secure Design - Key Relationships * Business Aligned Principal Security Architects * CyberSecurity Engine
        more

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        Frequently Asked Questions

        How many permanent API jobs are there in Hertford?
        There are 51 permanent API jobs within 20 miles of Hertford available on CWJobs right now.

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