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7 Permanent API jobs in Kensington, Liverpool + 20 miles
54 exact matches jobs are outside your preferred location
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Microservice and API-led architecture and integration design tools, techniques and best practice.
Microservice and API-led architecture and integration design tools, techniques and best practice.
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Full Stack Developer
Full Stack Developer
BIOMETRIC TALENT
FY4, Blackpool
Up to £65,000 per annum Up to £65,000, hybrid role in Lancashire
As a Full Stack Engineer, youll play a key role in designing, developing, and maintaining a multi-portal platform that powers six Angular frontends and a modern .NET 8 backend API.
As a Full Stack Engineer, youll play a key role in designing, developing, and maintaining a multi-portal platform that powers six Angular frontends and a modern .NET 8 backend API.
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Software Developer
Software Developer
Anord Mardix (UK) Ltd
BB1, Blackburn
Excellent salary, remote working, all benefits listed on advert
Proficient in creating dynamic, responsive front-end API designs and integrations using ASP.NET MVC, JavaScript/jQuery, AJAX, HTML5, and Bootstrap, along with SQL-based database design and optimisation using Microsoft SQL Server or MySQL.
Proficient in creating dynamic, responsive front-end API designs and integrations using ASP.NET MVC, JavaScript/jQuery, AJAX, HTML5, and Bootstrap, along with SQL-based database design and optimisation using Microsoft SQL Server or MySQL.
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Principal Developer (C# and Azure Development)
Principal Developer (C# and Azure Development)
DCV Technologies Limited
Spring Gardens, M2
From £55,000 to £70,000 per annum
Azure AI Search, using API and designing indexes * Azure AD, Enterprise apps and interactions via Graph API * Data sources: via ODBC, RESTful API, Message-based Architectures
Azure AI Search, using API and designing indexes * Azure AD, Enterprise apps and interactions via Graph API * Data sources: via ODBC, RESTful API, Message-based Architectures
Experience of leveraging GitLab API for advanced automation, integration, and reporting;
Experience of leveraging GitLab API for advanced automation, integration, and reporting;
London - 2025-08-26T00:00:00Z - 170103 - Vanguard - Location: London or Manchester (Hybrid) About Vanguard - Vanguard is an investment company unlike any other. It was founded by Jack Bogle in the US in 1975 on a simple but revolutionary idea: that an investment company should manage its funds solely in the interests of its clients. Jack helped bring investing to the masses with the index fund. Index funds do not pick individual shares or bonds to beat the market. They track the performance of the entire market. Or as Jack put it, "Don't look for the needle in the haystack. Just buy the haystack!". We have stood for low-cost, uncomplicated investing ever since. Over the last 45 years people have come round to our way of thinking and more than 50 million investors worldwide now trust us with their money. About the Role
London - 2025-08-26T00:00:00Z - 170103 - Vanguard - Location: London or Manchester (Hybrid) About Vanguard - Vanguard is an investment company unlike any other. It was founded by Jack Bogle in the US in 1975 on a simple but revolutionary idea: that an investment company should manage its funds solely in the interests of its clients. Jack helped bring investing to the masses with the index fund. Index funds do not pick individual shares or bonds to beat the market. They track the performance of the entire market. Or as Jack put it, "Don't look for the needle in the haystack. Just buy the haystack!". We have stood for low-cost, uncomplicated investing ever since. Over the last 45 years people have come round to our way of thinking and more than 50 million investors worldwide now trust us with their money. About the Role
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Restful API Services experience
Restful API Services experience
API Design and Integration
API Design and Integration
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Experience with Azure Integration technologies (Inc. App services, Azure Functions, Logic Apps, and API Manager Etc.)
Experience with Azure Integration technologies (Inc. App services, Azure Functions, Logic Apps, and API Manager Etc.)
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Technical Product Owner
Technical Product Owner
Anson Mccade
North West, Manc est
GBP 65,000.00 per year;GBP 90,000.00 per year
Role: Technical Product Owner (API Products) We are seeking a highly skilled Technical Product Owner with a strong background in API products, backlog management, and stakeholder engagement, to join a well-established enterprise environment in Greater Manchester. This role will give you exposure to high-impact projects including software resilience programmes, and the delivery of modern API-driven solutions. * Champion API strategy and ensure excellent developer experience (DX), including onboarding, documentation, and support. * Proven API product management experience (REST, OpenAPI, authentication methods).
Role: Technical Product Owner (API Products) We are seeking a highly skilled Technical Product Owner with a strong background in API products, backlog management, and stakeholder engagement, to join a well-established enterprise environment in Greater Manchester. This role will give you exposure to high-impact projects including software resilience programmes, and the delivery of modern API-driven solutions. * Champion API strategy and ensure excellent developer experience (DX), including onboarding, documentation, and support. * Proven API product management experience (REST, OpenAPI, authentication methods).
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Technical Testing of APIs including Authentication & Authorisation, API Requests & Responses and API response codes using tools such as Postman
Technical Testing of APIs including Authentication & Authorisation, API Requests & Responses and API response codes using tools such as Postman
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Due to continued success, they are looking to grow one of their key software engineering teams working on some of their most successful SaaS products. The Senior C# Software Engineer will join an established team developing business logic for Windows based products. Key experience * Extensive commercial experience in C# Windows programming * Multithreading / TPL * XML * SQL * Version control * Unit testing Experience in any of the following areas would be advantageous but is not a prerequisite * WIX installers * Windows services eg Active Directory, Exchange etc * Client-server architecture development * M365 APIs If you are seeking a role of this nature please get in touch for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
Due to continued success, they are looking to grow one of their key software engineering teams working on some of their most successful SaaS products. The Senior C# Software Engineer will join an established team developing business logic for Windows based products. Key experience * Extensive commercial experience in C# Windows programming * Multithreading / TPL * XML * SQL * Version control * Unit testing Experience in any of the following areas would be advantageous but is not a prerequisite * WIX installers * Windows services eg Active Directory, Exchange etc * Client-server architecture development * M365 APIs If you are seeking a role of this nature please get in touch for more information. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.
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TypeScript | React | Go | Python | Mission-Driven Start-up - Weve partnered with a mission-driven, remote-first start-up thats transforming a global industry worth billions. Their platform is tackling long-standing inefficiencies, unlocking fairness, transparency, and faster payments for creators and rights-holders worldwide. Theyre looking for a Full Stack Software Engineer who wants to build technology that makes a real impact. You wont just write code - youll solve real-world problems that improve how people get paid and recognized. Youll build end-to-end features across UI, APIs, and infrastructure, helping the team deliver meaningful products. * Salary:Up to £100,000 (DOE) * Location:Fully remote (UK only) * Key Technologies:TypeScript, React, Next.js, Go or Python, AWS or GCP - Senior Software Engineer Requirements * 5+ years experience as a Software Engineer (F
TypeScript | React | Go | Python | Mission-Driven Start-up - Weve partnered with a mission-driven, remote-first start-up thats transforming a global industry worth billions. Their platform is tackling long-standing inefficiencies, unlocking fairness, transparency, and faster payments for creators and rights-holders worldwide. Theyre looking for a Full Stack Software Engineer who wants to build technology that makes a real impact. You wont just write code - youll solve real-world problems that improve how people get paid and recognized. Youll build end-to-end features across UI, APIs, and infrastructure, helping the team deliver meaningful products. * Salary:Up to £100,000 (DOE) * Location:Fully remote (UK only) * Key Technologies:TypeScript, React, Next.js, Go or Python, AWS or GCP - Senior Software Engineer Requirements * 5+ years experience as a Software Engineer (F
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ClearCourse - Location: Remote - Salary: Competitive + Bonus + Benefits - Role Type: Full-Time, Permanent - Shape the Future of SaaS in a Hands-On, High-Impact Engineering Role - Are you a highly skilled C#/.NET and Angular developer with a passion for building clean, scalable software in a modern tech environment? Are you looking for the freedom to make meaningful technical decisions, mentor others, and contribute to a long-standing SaaS product used by thousands? Were seeking a Senior Software Engineer to join our small, agile development team at ClearCourse. Youll play a key role in designing, building, and maintaining a feature-rich, high-availability application hosted on Azurewhile influencing decisions across architecture, testing, performance, and quality. * C# 7+ / .NET * Angular 13+ * SQL Server * Redis * APIs and Integrations * Message Queues * CI/CD Pipeli
ClearCourse - Location: Remote - Salary: Competitive + Bonus + Benefits - Role Type: Full-Time, Permanent - Shape the Future of SaaS in a Hands-On, High-Impact Engineering Role - Are you a highly skilled C#/.NET and Angular developer with a passion for building clean, scalable software in a modern tech environment? Are you looking for the freedom to make meaningful technical decisions, mentor others, and contribute to a long-standing SaaS product used by thousands? Were seeking a Senior Software Engineer to join our small, agile development team at ClearCourse. Youll play a key role in designing, building, and maintaining a feature-rich, high-availability application hosted on Azurewhile influencing decisions across architecture, testing, performance, and quality. * C# 7+ / .NET * Angular 13+ * SQL Server * Redis * APIs and Integrations * Message Queues * CI/CD Pipeli
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Proficiency in REST API development
Proficiency in REST API development
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API-centric architectures.
API-centric architectures.
Closing date: 12/08/2025 - 37 hours / Permanent - 37,938 - 39,513 * Canolfan Rheidol, Aberystwyth *All salary values are pro-rata. Apply Online - About the role - Please note that the advertised salary for this position is subject to a pending pay award. The final salary will be adjusted in line with the nationally agreed pay award. Join Our Team as a ICT Senior Data Engineer - We are seeking a highly skilled Data Engineer to join our team. This role focuses on managing and transitioning data from traditional on-premises SQL environments to Azure cloud solutions, with a special emphasis on master data management using MS Azure SQL. The successful candidate will be key in integrating various Management Information System (MIS) databases with Azure master data repositories. Ceredigion County Council is a leading, innovative organisation that are supporting the citizens
Closing date: 12/08/2025 - 37 hours / Permanent - 37,938 - 39,513 * Canolfan Rheidol, Aberystwyth *All salary values are pro-rata. Apply Online - About the role - Please note that the advertised salary for this position is subject to a pending pay award. The final salary will be adjusted in line with the nationally agreed pay award. Join Our Team as a ICT Senior Data Engineer - We are seeking a highly skilled Data Engineer to join our team. This role focuses on managing and transitioning data from traditional on-premises SQL environments to Azure cloud solutions, with a special emphasis on master data management using MS Azure SQL. The successful candidate will be key in integrating various Management Information System (MIS) databases with Azure master data repositories. Ceredigion County Council is a leading, innovative organisation that are supporting the citizens
Experience defining product functional specifications including API, CLI and GUI
Experience defining product functional specifications including API, CLI and GUI
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Demonstrated experience defining product specifications and user experiences across interfaces (API, CLI, GUI).
Demonstrated experience defining product specifications and user experiences across interfaces (API, CLI, GUI).
Full Stack Developer .NET / Angular - Hybrid 2 -3 days based in Coleshill, Warwickshire (UK-based) | Permanent | Full-Time? Work on a global SaaS platform transforming recruitment tech - Microsoft Partner | Cutting-Edge Greenfield Projects | Agile Delivery - About Mercury - Mercury is a fast-growing SaaS business operating in close partnership with Microsoft. We specialise in delivering market-leading recruitment technology to professional staffing sectors worldwide. Our flagship product is a custom-built Applicant Tracking System (ATS) built on Microsoft Dynamics 365, tailored specifically for recruitment agencies and talent-focused businesses. With a modern tech stack and a culture of innovation, were on a mission to transform how recruitment businesses operate empowering them with scalable, intuitive software solutions. The Role
Full Stack Developer .NET / Angular - Hybrid 2 -3 days based in Coleshill, Warwickshire (UK-based) | Permanent | Full-Time? Work on a global SaaS platform transforming recruitment tech - Microsoft Partner | Cutting-Edge Greenfield Projects | Agile Delivery - About Mercury - Mercury is a fast-growing SaaS business operating in close partnership with Microsoft. We specialise in delivering market-leading recruitment technology to professional staffing sectors worldwide. Our flagship product is a custom-built Applicant Tracking System (ATS) built on Microsoft Dynamics 365, tailored specifically for recruitment agencies and talent-focused businesses. With a modern tech stack and a culture of innovation, were on a mission to transform how recruitment businesses operate empowering them with scalable, intuitive software solutions. The Role
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Software Consulting Engineer – T&D Configuration Systems & Software Solutions
Software Consulting Engineer – T&D Configuration Systems & Software Solutions
GE Vernova
UK
Competitive
Drive the integration IEC 61850 engineering workflows (SCL-based ICD, SCD, SSD) into intuitive, automated tooling ecosystems aligned with modern UI/UX, API design, and utility integration requirements. * Knowledge of data modeling, API integration, network communications, and cybersecurity practices.
Drive the integration IEC 61850 engineering workflows (SCL-based ICD, SCD, SSD) into intuitive, automated tooling ecosystems aligned with modern UI/UX, API design, and utility integration requirements. * Knowledge of data modeling, API integration, network communications, and cybersecurity practices.
Homeworking , Nationwide - Full Time , Permanent - Closing date: 23 September 2025 - Apply - We're looking for a Senior Data Engineer to join our Data & Analytics team at Willmott Dixon to help drive the next wave of our data platform in Microsoft Fabric. Although the IT team are based at our head office in Letchworth Garden City, this role can be done as either a hybrid, or a remote role. Occasional travel to other sites may be required according to business needs. The Role - As a Senior Data Engineer, you'll be at the heart of designing and delivering scalable, reliable data products and pipelines that power decision-making and drive business performance. You'll work closely with analysts, developers, and stakeholders to align data engineering efforts with business goals and needs. You'll play a key role in shaping how we deliver a trusted, single source of truth pl
Homeworking , Nationwide - Full Time , Permanent - Closing date: 23 September 2025 - Apply - We're looking for a Senior Data Engineer to join our Data & Analytics team at Willmott Dixon to help drive the next wave of our data platform in Microsoft Fabric. Although the IT team are based at our head office in Letchworth Garden City, this role can be done as either a hybrid, or a remote role. Occasional travel to other sites may be required according to business needs. The Role - As a Senior Data Engineer, you'll be at the heart of designing and delivering scalable, reliable data products and pipelines that power decision-making and drive business performance. You'll work closely with analysts, developers, and stakeholders to align data engineering efforts with business goals and needs. You'll play a key role in shaping how we deliver a trusted, single source of truth pl
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Job Description Summary - We are looking for a results-driven Data Engineer to join our Grid Innovation team and help shape the future of energy through AI. In this role, you will design, build, and maintain the infrastructure and data pipelines that power advanced AI/ML applications, driving innovation in the energy sector. Your work will enable efficient data collection, processing, storage, and analysis across complex and high-stakes environments. Experience in the energy sector, smart infrastructure, or industrial automation is essential, as you will be supporting mission-critical systems where both regulatory compliance and operational reliability are paramount. Reporting to the AI Leader within the CTO organization, you will collaborate closely with Grid Automation (GA) product lines, R&D teams, product management, and other GA functions.
Job Description Summary - We are looking for a results-driven Data Engineer to join our Grid Innovation team and help shape the future of energy through AI. In this role, you will design, build, and maintain the infrastructure and data pipelines that power advanced AI/ML applications, driving innovation in the energy sector. Your work will enable efficient data collection, processing, storage, and analysis across complex and high-stakes environments. Experience in the energy sector, smart infrastructure, or industrial automation is essential, as you will be supporting mission-critical systems where both regulatory compliance and operational reliability are paramount. Reporting to the AI Leader within the CTO organization, you will collaborate closely with Grid Automation (GA) product lines, R&D teams, product management, and other GA functions.
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Hybrid - 50/50 Home and Office (Capenhurst) Join a global, independent provider of end-to-end power engineering solutions, supporting clients in managing and operating electrical networks. This is a well-established, innovation-led organisation with a strong, values-driven culture. You'll be joining a friendly and welcoming team that thrives on solving complex challenges together. If you're an experienced Senior Full-Stack Software Developer looking to make a real impact and be part of something meaningful, we'd love to hear from you. As a Senior Full-Stack Developer, you'll play a critical role in designing, building, and maintaining scalable, high-performance cloud web applications. Your contributions will directly shape the future of our digital platforms. C#, .NET 8, TypeScript, and React - Azure environments - Provide mentorship and technical guidance to junior d
Hybrid - 50/50 Home and Office (Capenhurst) Join a global, independent provider of end-to-end power engineering solutions, supporting clients in managing and operating electrical networks. This is a well-established, innovation-led organisation with a strong, values-driven culture. You'll be joining a friendly and welcoming team that thrives on solving complex challenges together. If you're an experienced Senior Full-Stack Software Developer looking to make a real impact and be part of something meaningful, we'd love to hear from you. As a Senior Full-Stack Developer, you'll play a critical role in designing, building, and maintaining scalable, high-performance cloud web applications. Your contributions will directly shape the future of our digital platforms. C#, .NET 8, TypeScript, and React - Azure environments - Provide mentorship and technical guidance to junior d
Jonas Metals Software has been delivering market-leading ERP software solutions to the metals industry for over 35 years. Our developers are passionate about building robust, high-quality systems that drive real value for our customers. We embrace agile methodologies and promote continuous improvement across our products, toolsets, and development processes. Team members are empowered to influence standards, technical direction, and architectural evolution. We recognise that software development is a constantly evolving discipline. Thats why we dedicate time and resources for our developers to research, experiment, and innovate. As part of the Jonas Group of companies, we offer strong career development opportunities across a global network of businesses. We are seeking an energetic Java Software Engineer to take on an exciting role within our growing team.
Jonas Metals Software has been delivering market-leading ERP software solutions to the metals industry for over 35 years. Our developers are passionate about building robust, high-quality systems that drive real value for our customers. We embrace agile methodologies and promote continuous improvement across our products, toolsets, and development processes. Team members are empowered to influence standards, technical direction, and architectural evolution. We recognise that software development is a constantly evolving discipline. Thats why we dedicate time and resources for our developers to research, experiment, and innovate. As part of the Jonas Group of companies, we offer strong career development opportunities across a global network of businesses. We are seeking an energetic Java Software Engineer to take on an exciting role within our growing team.