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Locations
Locations
Salaries
Date posted
Type of Company
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50 Permanent API jobs in The City, City of London + 20 miles
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A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
A top-tier defense organization is looking for an experienced Axway API Developer / Administrator to join their team on a 6-month contract. * Axway's core products: Policy Studio, API Gateway, and API Manager. If you are an experienced professional with a background in API, MFT, or secure file transfers, this could be the perfect opportunity for you.
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Strong experience with API and event-driven architectures.
Strong experience with API and event-driven architectures.
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Build and maintain an API used by the product as well as external partners.
Build and maintain an API used by the product as well as external partners.
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Investran Application Specialist
Investran Application Specialist
Cobalt Recruitment.
City of London, London
£75000.00 - £95000 per annum
Proven track record of configuring and integrating financial platforms, ideally with SQL and API experience.
Proven track record of configuring and integrating financial platforms, ideally with SQL and API experience.
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Ensuring feature parity and API alignment between different platforms
Ensuring feature parity and API alignment between different platforms
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Senior Software Engineer
Senior Software Engineer
Halian Technology Limited
W1, Central London
From £90,000 to £95,000 per annum Plus bonus and benefits
Cloud experience withAWSservices (Lambda, API Gateway, S3, etc.)
Cloud experience withAWSservices (Lambda, API Gateway, S3, etc.)
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Designing and implementing automated test frameworks for UI and API
Designing and implementing automated test frameworks for UI and API
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Collaborate with Data Analysts, Architects, and system owners to improve data quality and support API/Middleware-based data management. * Full lifecycle development experience on the Mulesoft Anypoint Platform (Design Centre, Exchange, Studio, API Manager, Runtime Manager). * Proficiency in RESTful API development and working with XML, XSLT, and XSD.
Collaborate with Data Analysts, Architects, and system owners to improve data quality and support API/Middleware-based data management. * Full lifecycle development experience on the Mulesoft Anypoint Platform (Design Centre, Exchange, Studio, API Manager, Runtime Manager). * Proficiency in RESTful API development and working with XML, XSLT, and XSD.
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Perform Dataverse customizations, SQL queries, and CRUD operations using REST/Web API calls. * JavaScript (customizations & API calls)
Perform Dataverse customizations, SQL queries, and CRUD operations using REST/Web API calls. * JavaScript (customizations & API calls)
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ASP.NET Web API
ASP.NET Web API
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Azure Administrator
Azure Administrator
Queen Square Recruitment Limited
EC2N, City of London
From £450 to £550 per day inside IR35, DOE
Configure cloud-native applications using Azure Cosmos DB (SQL API, Mongo API)
Configure cloud-native applications using Azure Cosmos DB (SQL API, Mongo API)
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Azure Developer
Azure Developer
Queen Square Recruitment Limited
EC2N, City of London
From £500 to £600 per day inside IR35, DOE
Develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API) * Experience with SQL API and familiarity with other APIs
Develop cloud-native applications using Azure Cosmos DB (SQL API, Mongo API) * Experience with SQL API and familiarity with other APIs
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Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
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Azure Security Engineer - Sentinel, Defender, Purview
Azure Security Engineer - Sentinel, Defender, Purview
Apsley Recruitment Ltd
EC2, City of London
From £60,000 to £68,000 per annum Full benefits package
Hands-on with PowerShell and Microsoft Graph API for security automation
Hands-on with PowerShell and Microsoft Graph API for security automation
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About The Role - Job level:10 - Were growing our team! Were looking forLead Solution Architectswho will play central roles in the successful delivery of technology projects. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will lead architecture work on client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artefacts, and supporting clients to make sustainable and user-focused technology choices. You might be a specialist in a particular technology domain or platform - such as legacy system migration, m365, Azure, GCP, AWS, data platforms or intelligent process auto
About The Role - Job level:10 - Were growing our team! Were looking forLead Solution Architectswho will play central roles in the successful delivery of technology projects. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will lead architecture work on client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artefacts, and supporting clients to make sustainable and user-focused technology choices. You might be a specialist in a particular technology domain or platform - such as legacy system migration, m365, Azure, GCP, AWS, data platforms or intelligent process auto
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About The Role - Job level:10 - Were growing our team! Were looking forLead Solution Architectswho will play central roles in the successful delivery of technology projects. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will lead architecture work on client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artefacts, and supporting clients to make sustainable and user-focused technology choices. You might be a specialist in a particular technology domain or platform - such as legacy system migration, m365, Azure, GCP, AWS, data platforms or intelligent process auto
About The Role - Job level:10 - Were growing our team! Were looking forLead Solution Architectswho will play central roles in the successful delivery of technology projects. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will lead architecture work on client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artefacts, and supporting clients to make sustainable and user-focused technology choices. You might be a specialist in a particular technology domain or platform - such as legacy system migration, m365, Azure, GCP, AWS, data platforms or intelligent process auto
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Strong foundation in web development, REST API design, and secure best practices
Strong foundation in web development, REST API design, and secure best practices
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Client Roles - At Peregrine, were proud to be recruiting on behalf of our clients. We are recruiting an exciting opportunity for a Principal Design Architect, responsible for designing and assuring complex, high-impact solutions that align with enterprise architecture standards and strategic business objectives. A technology-led organisation working at the intersection of energy and digital infrastructure. They deliver secure, large-scale solutions that support national initiatives and enable innovation across the energy sector. The Principal Design Architect is a senior technical leader operating across multiple projects or domains, the role combines deep technical expertise with strong stakeholder engagement skills to shape architecture outcomes from concept to delivery. The Principal Solution Architect provides governance, coaching, and quality assurance for soluti
Client Roles - At Peregrine, were proud to be recruiting on behalf of our clients. We are recruiting an exciting opportunity for a Principal Design Architect, responsible for designing and assuring complex, high-impact solutions that align with enterprise architecture standards and strategic business objectives. A technology-led organisation working at the intersection of energy and digital infrastructure. They deliver secure, large-scale solutions that support national initiatives and enable innovation across the energy sector. The Principal Design Architect is a senior technical leader operating across multiple projects or domains, the role combines deep technical expertise with strong stakeholder engagement skills to shape architecture outcomes from concept to delivery. The Principal Solution Architect provides governance, coaching, and quality assurance for soluti
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Global Claims IT Leader
Global Claims IT Leader
MARSH CORPORATE SERVICES LIMITED
The City, EC3R 5BU
Pension Scheme, Private Health Insurance & life insurance
Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
Being a cross-functional collaborator interfacing with MMC Enterprise Technology partners, Marsh-Operations, and Transformation Office will come naturally to you building a new set of reusable IT Microservices connected via a well-defined API structure.
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Build and work with modern API and microservices architectures
Build and work with modern API and microservices architectures
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Good understanding of API integration and data flow between front-end and back-end.
Good understanding of API integration and data flow between front-end and back-end.
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API Utilization: Familiarity with APIs (Python, JavaScript) for programmatic dashboard management.
API Utilization: Familiarity with APIs (Python, JavaScript) for programmatic dashboard management.
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Role: Full Stack Software Engineer (UK-based, early-stage startup) £60,000 - £80,000 per annum | No Sponsorship | x3 week in office - Backed by technology start up accelerator and VC - Join a mission-driven AI startup transforming how medical and healthcare organisations collaborate. Using machine learning and advanced recommendation systems, the team helps to matchmake some of the leading Medical and Pharmaceuticalbusinesses with their extensive network of professionals. This allows them to engage seamlessly all while reducing operational costs so resources can focus on changing lives. This is the chance to work on cutting-edge AI technology at an early stage with real influence on product and architecture to help medical organisations do more with their resources while changing lives and impact clients across the US and FTSE markets.
Role: Full Stack Software Engineer (UK-based, early-stage startup) £60,000 - £80,000 per annum | No Sponsorship | x3 week in office - Backed by technology start up accelerator and VC - Join a mission-driven AI startup transforming how medical and healthcare organisations collaborate. Using machine learning and advanced recommendation systems, the team helps to matchmake some of the leading Medical and Pharmaceuticalbusinesses with their extensive network of professionals. This allows them to engage seamlessly all while reducing operational costs so resources can focus on changing lives. This is the chance to work on cutting-edge AI technology at an early stage with real influence on product and architecture to help medical organisations do more with their resources while changing lives and impact clients across the US and FTSE markets.
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Role: Backend engineer - Rate: IR35 Status yet to be determined - Location: Remote with occasional travel to London - Duration: 6-month initial contract - SC clearance required. About the Role - You are a systems thinker with deep experience in backend engineering and distributed - data infrastructure. You thrive in high-stakes environments, know how to ship reliable - code fast, and are pragmatic about trade-o=s. You understand the unique constraints of - experimental, edge-deployable systems, especially in air-gapped environments where - resilience and autonomy matter most. This role focuses on building and adapting backend services to support experimental AI - systems deployed in sensitive Defence contexts. You will help create and manage - robust, portable pipelines for data ingestion, orchestration, model interaction, and - querying - all within a classified, com
Role: Backend engineer - Rate: IR35 Status yet to be determined - Location: Remote with occasional travel to London - Duration: 6-month initial contract - SC clearance required. About the Role - You are a systems thinker with deep experience in backend engineering and distributed - data infrastructure. You thrive in high-stakes environments, know how to ship reliable - code fast, and are pragmatic about trade-o=s. You understand the unique constraints of - experimental, edge-deployable systems, especially in air-gapped environments where - resilience and autonomy matter most. This role focuses on building and adapting backend services to support experimental AI - systems deployed in sensitive Defence contexts. You will help create and manage - robust, portable pipelines for data ingestion, orchestration, model interaction, and - querying - all within a classified, com
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About The Role - Job level:11 - Were growing our team! Were looking forPrincipal Solution Architectswho will serve as key leaders on client-facing projects. This role involves guiding clients and development teams through complex digital product development and technology implementations. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will be accountable for running projects, leading architecture work across some of our most complex and high-impact client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artifacts, and supporting clients to make sustainable and user
About The Role - Job level:11 - Were growing our team! Were looking forPrincipal Solution Architectswho will serve as key leaders on client-facing projects. This role involves guiding clients and development teams through complex digital product development and technology implementations. You will work closely with clients and internal teams to understand context, co-design solutions, and lead technical teams through product development. In this role, you will be accountable for running projects, leading architecture work across some of our most complex and high-impact client programmes. You will design and oversee end-to-end technology solutions that are scalable, secure, user-centred, and ethically responsible. This role involves translating business needs into technology solutions, creating architecture artifacts, and supporting clients to make sustainable and user
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