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183 Permanent API jobs in South East + 20 miles
Looking for a new challenge? Take a look at our current vacancies. If you see a vacancy that is right for you, we encourage you to apply! Job Title: Specialist Data Engineer - Full-time role - Working Hours: Full-time 35 hours per week - Salary: £64,575 - Location: London Docklands (Hybrid). Our permanent hybrid policy sees us all working at least four days across a fortnight in the office. The Financial Ombudsman Service has been resolving customer complaints since 2001. Our service is free for consumers to use and over 1 million people contact us every year. The last few years have seen the Financial Ombudsman Service embark on an organisation-wide transformation journey. With the customer at the heart of everything we do, we have already delivered significant improvements in the service we offer and 2026 will see us continue with our ambitious transformation agenda
Looking for a new challenge? Take a look at our current vacancies. If you see a vacancy that is right for you, we encourage you to apply! Job Title: Specialist Data Engineer - Full-time role - Working Hours: Full-time 35 hours per week - Salary: £64,575 - Location: London Docklands (Hybrid). Our permanent hybrid policy sees us all working at least four days across a fortnight in the office. The Financial Ombudsman Service has been resolving customer complaints since 2001. Our service is free for consumers to use and over 1 million people contact us every year. The last few years have seen the Financial Ombudsman Service embark on an organisation-wide transformation journey. With the customer at the heart of everything we do, we have already delivered significant improvements in the service we offer and 2026 will see us continue with our ambitious transformation agenda
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Type - Permanent - Full Time - Location - London - Job Role - Project Management Office - Withers - Job title: Legal AI and Innovation Delivery Lead - Reporting to: Global Head of Portfolio Management - Location: London - The Role - Aligned to a continuous drive to innovate, Withers has recently launched a new business strategy which focuses on reviewing and improving how our firm operates across all regions and divisions in order to optimise productivity through the better use of technology, and ultimately to deliver the best service to our clients. This will be achieved through a number of means including examining and optimising technology skills, the processes that our people use, and the technologies which they are using. It will address both the better use of our existing systems, and the purchase and /or development of new tools aligned to business needs.
Type - Permanent - Full Time - Location - London - Job Role - Project Management Office - Withers - Job title: Legal AI and Innovation Delivery Lead - Reporting to: Global Head of Portfolio Management - Location: London - The Role - Aligned to a continuous drive to innovate, Withers has recently launched a new business strategy which focuses on reviewing and improving how our firm operates across all regions and divisions in order to optimise productivity through the better use of technology, and ultimately to deliver the best service to our clients. This will be achieved through a number of means including examining and optimising technology skills, the processes that our people use, and the technologies which they are using. It will address both the better use of our existing systems, and the purchase and /or development of new tools aligned to business needs.
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Senior Software Development Engineer in Test - Unleash Innovation with Mimecast! Join the momentum behind our award-winning platform at Mimecast! Embark on a journey with our Governance, Compliance, and Insights (GCI) and Threat Reporting and Response (TRR) engineering teams. As a vital part of Quality Engineering, you'll play a key role in elevating the quality of our archiving and security software. Together, were harnessing cutting-edge solutions that empower our customers to master Human Risk Management on an unprecedented scale. Dive in and be part of the future! Why Join Our Team? If you have a passion for creatively addressing complex challenges and wish to implement innovative solutions to develop and scale reliable, high-performing software in both private and public cloud environments, then the GCI and TRR teams are the perfect fit for you.
Senior Software Development Engineer in Test - Unleash Innovation with Mimecast! Join the momentum behind our award-winning platform at Mimecast! Embark on a journey with our Governance, Compliance, and Insights (GCI) and Threat Reporting and Response (TRR) engineering teams. As a vital part of Quality Engineering, you'll play a key role in elevating the quality of our archiving and security software. Together, were harnessing cutting-edge solutions that empower our customers to master Human Risk Management on an unprecedented scale. Dive in and be part of the future! Why Join Our Team? If you have a passion for creatively addressing complex challenges and wish to implement innovative solutions to develop and scale reliable, high-performing software in both private and public cloud environments, then the GCI and TRR teams are the perfect fit for you.
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At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting-edge solutions. Join us to drive transformation tailored to our client's challenges of today and tomorrow. Informed and validated by science and data. Superpowered by creativity and design. All underpinned by technology created with purpose. As a Agile Business Analyst Consultant, you will be joining the growing and exciting Digital Excellence community who are continually sharing knowledge and expertise. We are all passionate about user-centred design, critical thinking, problem solving and designing and building digital services and products. Working at Capgemini Invent would give you opportunities to develop and grow, working with major clients in both p
At Capgemini Invent, we believe difference drives change. As inventive transformation consultants, we blend our strategic, creative and scientific capabilities, collaborating closely with clients to deliver cutting-edge solutions. Join us to drive transformation tailored to our client's challenges of today and tomorrow. Informed and validated by science and data. Superpowered by creativity and design. All underpinned by technology created with purpose. As a Agile Business Analyst Consultant, you will be joining the growing and exciting Digital Excellence community who are continually sharing knowledge and expertise. We are all passionate about user-centred design, critical thinking, problem solving and designing and building digital services and products. Working at Capgemini Invent would give you opportunities to develop and grow, working with major clients in both p
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Job summary - As the NHS Workforce solution moves into a transformational new era there is an exciting opportunity to join the national ESR Team, responsible for delivery of the largest HR, Payroll and Learning management solution and service in the World, to support the next exciting chapter in Workforce Services at NHSBSA. The Department of Health and Social Care has commissioned the NHSBSA to lead the Future NHS Workforce Solution Transformation Programme, to identify and deliver the Future NHS Workforce Solution to over 1.8 million NHS colleagues in England and Wales. Future NHS Workforce Solution Transformation Programme | NHSBSA - It is anticipated that the new supplier will be chosen by Autumn 2025, beginning a significant transitional period as they take on responsibility for running the existing service, whilst configuring the Future Workforce Solution in par
Job summary - As the NHS Workforce solution moves into a transformational new era there is an exciting opportunity to join the national ESR Team, responsible for delivery of the largest HR, Payroll and Learning management solution and service in the World, to support the next exciting chapter in Workforce Services at NHSBSA. The Department of Health and Social Care has commissioned the NHSBSA to lead the Future NHS Workforce Solution Transformation Programme, to identify and deliver the Future NHS Workforce Solution to over 1.8 million NHS colleagues in England and Wales. Future NHS Workforce Solution Transformation Programme | NHSBSA - It is anticipated that the new supplier will be chosen by Autumn 2025, beginning a significant transitional period as they take on responsibility for running the existing service, whilst configuring the Future Workforce Solution in par
Accueil - Nos offres d'emploi - Nous recherchons un - Retour la liste des offres - Contrat - CDI (Permanent) Horaires - Temps plein - Localisation - Londres, Angleterre, Royaume-Uni - Niveau d'études - Niveau BAC+2/3 - Marque - Métier - Expertise Financire et Technique Transformation numérique & data - Mise jour le 04.08.2025 - The Role - BNP Paribas Real Estate is a one-of-a-kind real estate specialist business, with multiple business lines providing residential and commercial property sales; facilities and property management; and rural estate advice and management. The use of data-driven insights and technology is key in the real estate sector. To continue our competitive approach in this market, we have embarked on an exciting programme of activity which involves identifying and enhancing the possibilities with our data - transforming and evolving BNP Paribas Real
Accueil - Nos offres d'emploi - Nous recherchons un - Retour la liste des offres - Contrat - CDI (Permanent) Horaires - Temps plein - Localisation - Londres, Angleterre, Royaume-Uni - Niveau d'études - Niveau BAC+2/3 - Marque - Métier - Expertise Financire et Technique Transformation numérique & data - Mise jour le 04.08.2025 - The Role - BNP Paribas Real Estate is a one-of-a-kind real estate specialist business, with multiple business lines providing residential and commercial property sales; facilities and property management; and rural estate advice and management. The use of data-driven insights and technology is key in the real estate sector. To continue our competitive approach in this market, we have embarked on an exciting programme of activity which involves identifying and enhancing the possibilities with our data - transforming and evolving BNP Paribas Real
Experience in consuming a RESTful API.
Experience in consuming a RESTful API.
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AI-driven search to enable discoverability - leveraging the changing nature of SEO, and the impact of the change in mechanism away from index-based search to structured data/API-first web models and how AI and search agents (like ChatGPT or Perplexity) change how users find content
AI-driven search to enable discoverability - leveraging the changing nature of SEO, and the impact of the change in mechanism away from index-based search to structured data/API-first web models and how AI and search agents (like ChatGPT or Perplexity) change how users find content
12 exact matches jobs are outside your preferred location
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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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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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Full Stack Developer - DV Cleared - Hybrid - Various Locations
Full Stack Developer - DV Cleared - Hybrid - Various Locations
Experis
UK
£60000 - £120000 per annum + Excellent Benefits
Full Stack Developer - Must have an Active DV Clearance - Hybrid - Location: Bristol, London, Manchester or Cambridge - Salary: £70,000 - £120,000 (depending on experience and clearance) We are looking for a Full Stack Developer to join a growing public sector team delivering secure, high-impact digital services across Defence & Security. This is a unique opportunity to use your development expertise to help solve real-world challenges for government and national security clients. You'll work on meaningful projects in an agile environment, applying your skills across the full software development lifecycle - from design through to deployment. You'll be part of a collaborative and supportive engineering team, working alongside technical leads, project managers, and stakeholders to deliver robust and scalable solutions.
Full Stack Developer - Must have an Active DV Clearance - Hybrid - Location: Bristol, London, Manchester or Cambridge - Salary: £70,000 - £120,000 (depending on experience and clearance) We are looking for a Full Stack Developer to join a growing public sector team delivering secure, high-impact digital services across Defence & Security. This is a unique opportunity to use your development expertise to help solve real-world challenges for government and national security clients. You'll work on meaningful projects in an agile environment, applying your skills across the full software development lifecycle - from design through to deployment. You'll be part of a collaborative and supportive engineering team, working alongside technical leads, project managers, and stakeholders to deliver robust and scalable solutions.
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Proficiency in REST API development
Proficiency in REST API development
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API-centric architectures.
API-centric architectures.
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.
Job Introduction - Job Title: Technical Business Analyst - Salary: £51,000 - 56,000 - Contract: Permanent - Location: Hybrid based in Warrington - Weekly Hours: 35 hours per week - So. What is this role exactly? This is an exciting opportunity for a Technical Business Analyst to join our Data & Business Intelligence team. We're continuing to evolve our data capabilities and governance frameworks-so it's a great time to be part of the journey. We're looking for someone who's passionate about data, thrives on technical analysis, and takes pride in delivering high-quality solutions that support business strategy and decision-making. What will my working week look like? You will be homebased, living within the North West, within a reasonable travelling distance of our Head Office in Warrington, to attend meetings and training courses when needed.
Job Introduction - Job Title: Technical Business Analyst - Salary: £51,000 - 56,000 - Contract: Permanent - Location: Hybrid based in Warrington - Weekly Hours: 35 hours per week - So. What is this role exactly? This is an exciting opportunity for a Technical Business Analyst to join our Data & Business Intelligence team. We're continuing to evolve our data capabilities and governance frameworks-so it's a great time to be part of the journey. We're looking for someone who's passionate about data, thrives on technical analysis, and takes pride in delivering high-quality solutions that support business strategy and decision-making. What will my working week look like? You will be homebased, living within the North West, within a reasonable travelling distance of our Head Office in Warrington, to attend meetings and training courses when needed.
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Data Engineer – Proven Experience in Energy Sector, Smart Infrastructure & Industrial Automation Required
Data Engineer – Proven Experience in Energy Sector, Smart Infrastructure & Industrial Automation Required
GE Vernova
UK
Competitive
Job Description Summary - We are seeking a results-driven Data Engineer to join our Grid Innovation team. This role focuses on designing, building, and maintaining the infrastructure and data pipelines that enable effective data collection, processing, storage, and analysis for cutting-edge AI/ML applications in the energy domain. Experience in the energy sector, smart infrastructure, or industrial automation is fundamental, as this role supports AI-driven innovation in mission-critical systems with high regulatory and operational complexity. As part of the CTO organization, reporting to the AI Leader, you will work closely with Grid Automation (GA) product lines, R&D teams, product management, and other GA functions. You will also support cross-functional initiatives by developing scalable and unified data frameworks to address critical customer problems and enable r
Job Description Summary - We are seeking a results-driven Data Engineer to join our Grid Innovation team. This role focuses on designing, building, and maintaining the infrastructure and data pipelines that enable effective data collection, processing, storage, and analysis for cutting-edge AI/ML applications in the energy domain. Experience in the energy sector, smart infrastructure, or industrial automation is fundamental, as this role supports AI-driven innovation in mission-critical systems with high regulatory and operational complexity. As part of the CTO organization, reporting to the AI Leader, you will work closely with Grid Automation (GA) product lines, R&D teams, product management, and other GA functions. You will also support cross-functional initiatives by developing scalable and unified data frameworks to address critical customer problems and enable r
Restful API Services experience
Restful API Services experience
Restful API Services experience
Restful API Services experience
Microsoft .NET / C#, MVC, SQL Server, Rest API and Visual Studio required.
Microsoft .NET / C#, MVC, SQL Server, Rest API and Visual Studio required.
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