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        54 Contract API jobs in Hertford + 20 miles

        Senior Python Developer

        Experis
        City of London (EC1)
        £500 - £540 per day
        Develop and maintain Python code for data processing, API development, and integration with the Azure Databricks environment.
        Develop and maintain Python code for data processing, API development, and integration with the Azure Databricks environment.
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        FEATURED

        Senior Full Stack Web Developer

        Profile 29
        Loughton (IG10), IG10
        From £80,000 to £100,000 per annum + benefits (see advert)
        As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
        As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
        more

        Senior Full Stack Web Developer

        Profile 29
        Loughton (IG10), IG10
        From £80,000 to £100,000 per annum + benefits (see advert)
        As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
        As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
        more

        Senior Full Stack Web Developer

        Profile 29
        Loughton (IG10), IG10
        From £80,000 to £100,000 per annum + benefits (see advert)
        As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
        As a member of their team, you will have the opportunity to work on their public-facing API and back-office websites in a Test-Driven Agile environment.
        more
        Strategic Bid Architect / Pre Sales Solution Architect / Bid Solution Architect / Bid Architect - Solutions - This is a pivotal role in shaping, validating, and presenting complex digital, data, and AI-enabled solutions that are commercially competitive, architecturally robust, and operationally deliverable. Acting as the senior solution leader, the role is accountable for designing and governing advanced, cloud-native, and data-driven architectures for strategic, complex, and high-value bids, showcasing our clients digital design ethos and technical excellence. They ensure that all proposals are aligned to customer outcomes, compliant with requirements, and consistent with enterprise standards and delivery capability - delivering winning, sustainable propositions for our client. Working closely with the Growth and Business Development teams from the earliest stages of the ...
        Strategic Bid Architect / Pre Sales Solution Architect / Bid Solution Architect / Bid Architect - Solutions - This is a pivotal role in shaping, validating, and presenting complex digital, data, and AI-enabled solutions that are commercially competitive, architecturally robust, and operationally deliverable. Acting as the senior solution leader, the role is accountable for designing and governing advanced, cloud-native, and data-driven architectures for strategic, complex, and high-value bids, showcasing our clients digital design ethos and technical excellence. They ensure that all proposals are aligned to customer outcomes, compliant with requirements, and consistent with enterprise standards and delivery capability - delivering winning, sustainable propositions for our client. Working closely with the Growth and Business Development teams from the earliest stages of the ...
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        FEATURED

        Workflow Developer

        Lynx Recruitment Limited
        City of London (EC2V)
        Up to £65,000 per annum
        Lynx Recruitment is seeking a skilled Workflow Developer to design, develop, and improve workflows, automations, and system integrations that support business operations. The successful candidate will work closely with stakeholders to translate operational needs into secure, reliable, and well-documented technical solutions. This is an excellent opportunity to work in a dynamic environment with modern hybrid working policies, collaborative teams, and exposure to cutting-edge business systems. Responsibilities * Design, build, and maintain workflows, automations, and system integrations across core business systems. * Create and optimize SQL queries, stored procedures, and data routines to support workflow logic and reporting. * Develop integrations using APIs, REST services, and approved low-code or integration tools.
        Lynx Recruitment is seeking a skilled Workflow Developer to design, develop, and improve workflows, automations, and system integrations that support business operations. The successful candidate will work closely with stakeholders to translate operational needs into secure, reliable, and well-documented technical solutions. This is an excellent opportunity to work in a dynamic environment with modern hybrid working policies, collaborative teams, and exposure to cutting-edge business systems. Responsibilities * Design, build, and maintain workflows, automations, and system integrations across core business systems. * Create and optimize SQL queries, stored procedures, and data routines to support workflow logic and reporting. * Develop integrations using APIs, REST services, and approved low-code or integration tools.
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        Junior Integration Analyst

        Altro
        Letchworth Garden City (SG6), SG6 1NW
        Competitive salary plus additional benefits,
        Are you curious about how systems talk to each other? Do you enjoy solving problems, working with data, and learning new technical skills? If so, this could be the perfect next step in your IT career. We’re looking for a Junior Integration Specialist to join our IT Department and support the delivery of our Global Integration Roadmap. You’ll work alongside experienced Integration Specialists and Analysts, helping to build, test, and maintain the connections that keep our systems running smoothly, both internally and with our external partners. This is a fantastic opportunity to develop hands-on experience in integrations, data flows, APIs, and EDI, while working with tools such as SSIS, SQL, and ZappySys. This permanent, full time, hybrid working ( 3 days a week in the office) is based at our Letchworth Garden City Head office.
        Are you curious about how systems talk to each other? Do you enjoy solving problems, working with data, and learning new technical skills? If so, this could be the perfect next step in your IT career. We’re looking for a Junior Integration Specialist to join our IT Department and support the delivery of our Global Integration Roadmap. You’ll work alongside experienced Integration Specialists and Analysts, helping to build, test, and maintain the connections that keep our systems running smoothly, both internally and with our external partners. This is a fantastic opportunity to develop hands-on experience in integrations, data flows, APIs, and EDI, while working with tools such as SSIS, SQL, and ZappySys. This permanent, full time, hybrid working ( 3 days a week in the office) is based at our Letchworth Garden City Head office.
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        PREMIUM

        .NET Developer

        DGH Recruitment
        East London (E1)
        £55000 - £60000 per annum
        .NET Software Engineer - 12 month FTC - An opportunity to join a major transformation programme, building modern, scalable solutions and contributing to a data-driven technology landscape. Role Overview - Working within an agile engineering squad, you will develop new features, build integrations, and support cloud-based platforms using the latest Microsoft technologies. The role includes feature development, system integrations, and contributing to CI/CD, monitoring, and security improvements. Key Responsibilities - Design, develop and maintain reliable .NET solutions (primarily C#). Build features for both internal and external users. Develop integrations across internal systems, third-party tools, and Azure services. Create and maintain CI/CD pipelines (Azure DevOps). Participate in agile ceremonies and collaborate in code reviews.
        .NET Software Engineer - 12 month FTC - An opportunity to join a major transformation programme, building modern, scalable solutions and contributing to a data-driven technology landscape. Role Overview - Working within an agile engineering squad, you will develop new features, build integrations, and support cloud-based platforms using the latest Microsoft technologies. The role includes feature development, system integrations, and contributing to CI/CD, monitoring, and security improvements. Key Responsibilities - Design, develop and maintain reliable .NET solutions (primarily C#). Build features for both internal and external users. Develop integrations across internal systems, third-party tools, and Azure services. Create and maintain CI/CD pipelines (Azure DevOps). Participate in agile ceremonies and collaborate in code reviews.
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        Sharepoint Developer & Administrator

        DGH Recruitment
        City of London (EC1)
        £85000 - £93000 per annum + Benefits
        Hybrid working: 3 days per week required in the office. DGH Recruitment are currently recruiting on behalf of a global law firm who are looking for a Sharepoint Developer & Administrator to join the team on a permanent basis in their London office as they look to grow their IT function within the EMEA region. They are seeking a highly skilled Senior SharePoint Developer & Administrator to design, develop, administer, and modernize their SharePoint environments across SharePoint Subscription Edition (SE) and SharePoint Online. This role will combine hands-on custom development with enterprise platform administration, including system maintenance, updates, patching, governance, and intranet design. Responsibilities; - Sharepoint development and modernisation - Sharepoint administration and operations - Sharepoint on prem integration - Technical documentation
        Hybrid working: 3 days per week required in the office. DGH Recruitment are currently recruiting on behalf of a global law firm who are looking for a Sharepoint Developer & Administrator to join the team on a permanent basis in their London office as they look to grow their IT function within the EMEA region. They are seeking a highly skilled Senior SharePoint Developer & Administrator to design, develop, administer, and modernize their SharePoint environments across SharePoint Subscription Edition (SE) and SharePoint Online. This role will combine hands-on custom development with enterprise platform administration, including system maintenance, updates, patching, governance, and intranet design. Responsibilities; - Sharepoint development and modernisation - Sharepoint administration and operations - Sharepoint on prem integration - Technical documentation
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        Security Architect

        Morson Edge
        Moorgate, City of London (EC2), EC2Y 9AQ
        £800 - 825 per day
        London (1 day per month - may be more frequent) - £800 - £825 Inside IR35 - Morson Edge have partnered with a major UK retail client to recruit an experienced Security Architect to play a pivotal role in a high-profile Cyber Security Maturity Programme within the CISO function. This a great opportunity to shape and elevate enterprise-wide cyber maturity, influence strategic direction, and drive meaningful, measurable improvements to security resilience across a complex technology estate. You’ll act as a security champion, working at the heart of architecture, engineering, and business teams to embed secure-by-design principles and deliver a forward-looking security architecture that evolves with both business priorities and the threat landscape. What You’ll Be Doing * Lead the design and evolution of target-state security architectures aligned to maturity goals * Drive cyber ...
        London (1 day per month - may be more frequent) - £800 - £825 Inside IR35 - Morson Edge have partnered with a major UK retail client to recruit an experienced Security Architect to play a pivotal role in a high-profile Cyber Security Maturity Programme within the CISO function. This a great opportunity to shape and elevate enterprise-wide cyber maturity, influence strategic direction, and drive meaningful, measurable improvements to security resilience across a complex technology estate. You’ll act as a security champion, working at the heart of architecture, engineering, and business teams to embed secure-by-design principles and deliver a forward-looking security architecture that evolves with both business priorities and the threat landscape. What You’ll Be Doing * Lead the design and evolution of target-state security architectures aligned to maturity goals * Drive cyber ...
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        PREMIUM

        .NET Core Backend Developer

        EXL Service
        The City, City of London (EC3), EC3N 1DD
        A competitive salary with a generous bonus and additional benefits
        EXL (NASDAQ: EXLS)is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, including the worlds leading corporations in industries including insurance, healthcare, banking and financial services, media and retail, among others. EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. We are headquartered in New York and have more than 60,000 employees spanning six continents. Role Title:.NET Core Backend Developer - BU/Segment:Analytics /Insurance - Location: London, United Kingdom (Flexible hybrid working) Employment Type:Permanent - EXL is seeking an experienced.NET Core Backend Developerto join our Analytics team ...
        EXL (NASDAQ: EXLS)is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, including the worlds leading corporations in industries including insurance, healthcare, banking and financial services, media and retail, among others. EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. We are headquartered in New York and have more than 60,000 employees spanning six continents. Role Title:.NET Core Backend Developer - BU/Segment:Analytics /Insurance - Location: London, United Kingdom (Flexible hybrid working) Employment Type:Permanent - EXL is seeking an experienced.NET Core Backend Developerto join our Analytics team ...
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        Junior AI Consultant Apprentice

        EXL Service
        The City, City of London (EC3), EC3N 1DD
        Paid Apprenticeship
        EXL (NASDAQ: EXLS)is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, including the world's leading corporations in industries including insurance, healthcare and life sciences, banking and capital markets, retail, communications and media, and energy and infrastructure, among others. EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. We are headquartered in New York and have over 65,000 employees spanning six continents. Role Title:Junior AI Consultant Apprentice - BU/Segment:International Growth Markets / AI & Data Solutions - Location:EXL London.
        EXL (NASDAQ: EXLS)is a global data and artificial intelligence ("AI") company that offers services and solutions to reinvent client business models, drive better outcomes and unlock growth with speed. EXL harnesses the power of data, AI, and deep industry knowledge to transform businesses, including the world's leading corporations in industries including insurance, healthcare and life sciences, banking and capital markets, retail, communications and media, and energy and infrastructure, among others. EXL was founded in 1999 with the core values of innovation, collaboration, excellence, integrity and respect. We are headquartered in New York and have over 65,000 employees spanning six continents. Role Title:Junior AI Consultant Apprentice - BU/Segment:International Growth Markets / AI & Data Solutions - Location:EXL London.
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        Skills & Experience - Essential - Demonstrated experience as a Business Analyst in technology focused or IWMS/Facilities Management environments. Strong process analysis and BPMN based modelling skills. Proven ability to analyse system interfaces, data flows, and integration requirements. Understanding of IWMS platforms; experience with Planon is highly desirable. Ability to translate business needs into clear, structured, and actionable documentation. Excellent communication, stakeholder management, and facilitation skills. Key Responsibilities - Process Analysis & Requirements Gathering - Analyse existing processes within the Banks Planon IWMS, documenting current state workflows, business rules, data dependencies, and system interactions. Engage stakeholders to understand operational needs, pain points, and gaps between Planon and the suppliers IWMS.
        Skills & Experience - Essential - Demonstrated experience as a Business Analyst in technology focused or IWMS/Facilities Management environments. Strong process analysis and BPMN based modelling skills. Proven ability to analyse system interfaces, data flows, and integration requirements. Understanding of IWMS platforms; experience with Planon is highly desirable. Ability to translate business needs into clear, structured, and actionable documentation. Excellent communication, stakeholder management, and facilitation skills. Key Responsibilities - Process Analysis & Requirements Gathering - Analyse existing processes within the Banks Planon IWMS, documenting current state workflows, business rules, data dependencies, and system interactions. Engage stakeholders to understand operational needs, pain points, and gaps between Planon and the suppliers IWMS.
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        Senior VMware Engineer SC Cleared

        Sanderson Government and Defence
        City of London (EC1), EC1
        £450 - £513 per day
        Position: Senior VMware Engineer - Location: Hybrid / London - Day Rate: £500 p.d inside IR35 - SC Clearance Required - A leading consultancy is supporting a flagship central-government transformation and is looking for a Senior VMware & Automation Engineer to help modernise and automate a large, secure virtual infrastructure estate. This role is ideal for someone who enjoys building reliable automation at scale and wants their work to have national impact. The role - You'll lead automated VM lifecycle management across a complex VMware environment, creating efficient provisioning pipelines and improving how the platform is delivered, secured, and operated. You'll work closely with platform SMEs and engineering teams to ensure consistent, compliant, and high-quality VM operations. Key responsibilities * Build and optimise automated VM provisioning and lifecycle workflows using PowerCLI, ...
        Position: Senior VMware Engineer - Location: Hybrid / London - Day Rate: £500 p.d inside IR35 - SC Clearance Required - A leading consultancy is supporting a flagship central-government transformation and is looking for a Senior VMware & Automation Engineer to help modernise and automate a large, secure virtual infrastructure estate. This role is ideal for someone who enjoys building reliable automation at scale and wants their work to have national impact. The role - You'll lead automated VM lifecycle management across a complex VMware environment, creating efficient provisioning pipelines and improving how the platform is delivered, secured, and operated. You'll work closely with platform SMEs and engineering teams to ensure consistent, compliant, and high-quality VM operations. Key responsibilities * Build and optimise automated VM provisioning and lifecycle workflows using PowerCLI, ...
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        FEATURED

        Junior Data Analyst

        Anson Mccade
        Central London, London
        Up to £60,000 Annual
        £Up to £60,000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent - Our client is part of a globally recognised technology group, named one of Britain's Most Admired Companies for excellence in innovation, leadership and talent development, consistently ranked at the top of the UK's corporate reputation studies for major engineering and technology sectors. As a Junior Data Analyst, you will play a hands-on role in supporting the delivery of data, analytics and early-stage AI initiatives that help accelerate digital transformation across a wide range of global technology projects. Operating within a collaborative, agile environment, you will work alongside the AI/Data Science Specialist and Digital Solutions team to contribute to data preparation, analysis, reporting, experimentation, and the responsible exploration of AI tools and ...
        £Up to £60,000 GBP - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent - Our client is part of a globally recognised technology group, named one of Britain's Most Admired Companies for excellence in innovation, leadership and talent development, consistently ranked at the top of the UK's corporate reputation studies for major engineering and technology sectors. As a Junior Data Analyst, you will play a hands-on role in supporting the delivery of data, analytics and early-stage AI initiatives that help accelerate digital transformation across a wide range of global technology projects. Operating within a collaborative, agile environment, you will work alongside the AI/Data Science Specialist and Digital Solutions team to contribute to data preparation, analysis, reporting, experimentation, and the responsible exploration of AI tools and ...
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        PREMIUM
        Junior / Graduate Power Platform Developer (Remote) * Fully remote / home-based role * Reputable and growing organisation * Salary up to £29,000 plus benefits - A growing London-based business is seeking a Junior Power Platform Developer to join its established in-house development team. This is a fully remote position, with occasional onsite attendance required for team meetings (approximately once every couple of months). This is an excellent opportunity to join a well-established organisation that places strong emphasis on continuous training, professional development, and career progression. The role * Building and supporting Power Apps solutions (both Model-Driven and Canvas Apps) * Integrating data sources and third-party APIs * Engaging with stakeholders to understand business requirements and identify areas for improvement
        Junior / Graduate Power Platform Developer (Remote) * Fully remote / home-based role * Reputable and growing organisation * Salary up to £29,000 plus benefits - A growing London-based business is seeking a Junior Power Platform Developer to join its established in-house development team. This is a fully remote position, with occasional onsite attendance required for team meetings (approximately once every couple of months). This is an excellent opportunity to join a well-established organisation that places strong emphasis on continuous training, professional development, and career progression. The role * Building and supporting Power Apps solutions (both Model-Driven and Canvas Apps) * Integrating data sources and third-party APIs * Engaging with stakeholders to understand business requirements and identify areas for improvement
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        FEATURED
        You will support their ticket handling and ongoing development work following their recent go-live. This engagement will initially run for 1 month and will involve close collaboration with their in-house NAV/BC developer. * Providing support for our Business Central helpdesk tickets * Delivering work on newfeature requests * Strong reporting expertise, including Business CentraltoBI and Excel integrations via APIs * Ability to advise on the migration path from on-premise to SaaS * Comprehensive understanding of the Business Centralon-premise infrastructure (e.g., HTTPS printing, email configurations, and related scenarios) * Knowledge of CRM platforms with the ability to guide them on the recommended approach and considerations Potential for further project work. £450-500 per day. Based Hertfordshire / Remote
        You will support their ticket handling and ongoing development work following their recent go-live. This engagement will initially run for 1 month and will involve close collaboration with their in-house NAV/BC developer. * Providing support for our Business Central helpdesk tickets * Delivering work on newfeature requests * Strong reporting expertise, including Business CentraltoBI and Excel integrations via APIs * Ability to advise on the migration path from on-premise to SaaS * Comprehensive understanding of the Business Centralon-premise infrastructure (e.g., HTTPS printing, email configurations, and related scenarios) * Knowledge of CRM platforms with the ability to guide them on the recommended approach and considerations Potential for further project work. £450-500 per day. Based Hertfordshire / Remote
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        Frequently Asked Questions

        How many contract API jobs are there in Hertford?
        There are 54 contract API jobs within 20 miles of Hertford available on CWJobs right now.

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