Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
Locations
- The City, City (EC4)
- Hinxton
- Southwark
- The City, City (EC2)
- Arundel Heights
- Budbrooke Industrial Estate
- Cassington
- Covent Garden
- Datchet Common
- Euston
- City of London
- Milton Keynes
- Cambridge
- Central London
- Reading
- South East London
- Warwick
- West End
- Stevenage
- Abingdon
- London
- Berkshire
- Buckinghamshire
- Hertfordshire
- Oxfordshire
- Cambridgeshire
- Warwickshire
- Bedfordshire
- Essex
- Lincolnshire
- South East
- Midlands
- East Anglia
- West Midlands
- East Midlands
23 API jobs in Keeley Green + 20 miles
390 exact matches jobs are outside your preferred location
Looking to hire an Automation Test Engineer, the role spans the automation of low-level business functional tests through to mid-level system integration tests. The successful candidate will have to co-ordinate with Operations Change Business Analysis team, Development teams, and Project managers, as well as testing teams. The successful candidate will have an excellent QA background with experience of a variety of automation test tools, technologies and have business domain expertise and experience of delivery in complex fast moving environments. Excellent communication skills will be vital in this role. The role will report to the Test Manager and work day to day with the Test Lead. Required Skills and Experience * Extensive automation testing experience in Investment Banking IT, preparing and executing automated tests on a Financial platforms.
Looking to hire an Automation Test Engineer, the role spans the automation of low-level business functional tests through to mid-level system integration tests. The successful candidate will have to co-ordinate with Operations Change Business Analysis team, Development teams, and Project managers, as well as testing teams. The successful candidate will have an excellent QA background with experience of a variety of automation test tools, technologies and have business domain expertise and experience of delivery in complex fast moving environments. Excellent communication skills will be vital in this role. The role will report to the Test Manager and work day to day with the Test Lead. Required Skills and Experience * Extensive automation testing experience in Investment Banking IT, preparing and executing automated tests on a Financial platforms.
NEW
)
We are looking for an experienced C# .Net Developer with experience of GenAI to join a team developing cutting edge AI solutions who will either have current and active SC clearance or have the ability to be able to obtain SC clearance. You will provide solutions across both Azure and AWS technologies and importantly have a demonstrable background in C#.Net . This will be a very much collaborative role working with a range of domain experts. You will work on projects developing GenAI capabilities and provide guidance to non-technical people. What you will bring to the team * Solid C# .Net experience * Fine-tune Large Language Models (LLMs) and other generative architectures. * Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business use cases using prompt engineering and reinforcement learning.
We are looking for an experienced C# .Net Developer with experience of GenAI to join a team developing cutting edge AI solutions who will either have current and active SC clearance or have the ability to be able to obtain SC clearance. You will provide solutions across both Azure and AWS technologies and importantly have a demonstrable background in C#.Net . This will be a very much collaborative role working with a range of domain experts. You will work on projects developing GenAI capabilities and provide guidance to non-technical people. What you will bring to the team * Solid C# .Net experience * Fine-tune Large Language Models (LLMs) and other generative architectures. * Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business use cases using prompt engineering and reinforcement learning.
NEW
)
*inside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in SOLID Principles/Design patterns * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD. * Excellent communication skills and a pragmatic approach to problem-solving.
*inside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in SOLID Principles/Design patterns * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD. * Excellent communication skills and a pragmatic approach to problem-solving.
)
*inside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in SOLID Principles/Design patterns * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD. * Excellent communication skills and a pragmatic approach to problem-solving.
*inside iR35* What You'll Be Doing * Designing and developing enterprise-grade solutions in an Agile team. * Building and maintaining middleware services using C#, REST APIs, FIX messaging, XML, and Microservices. * Leading architecture discussions, code reviews, and release management. * Collaborating with users and cross-functional teams to define and execute testing strategies. * Mentoring junior developers and contributing to internal best practices. What You Bring * A strong academic background in Computer Science, Engineering, or a related field. * Proven experience in SOLID Principles/Design patterns * Deep knowledge of C# .NET, RESTful services, and microservice architecture. * Hands-on experience with FIX messaging, XML, AMQ, and ideally nHibernate, OData, and TDD. * Excellent communication skills and a pragmatic approach to problem-solving.
)
Blue chip client is looking for an Application and Monitoring SME - Role is based full time on site in Wokingham. Candidates must be eligible for SC Clearance. MUST BE PAYE THROUGH UMBRELLA (INSIDE IR35) Working from Warwick office, ideally within 1 hours travel - Wokingham office considered but needs to travel to Warwick office for training - Primary skills - L1 monitoring/observability, ITIL process, incident, MIM, etc - Secondary skills - L1 troubleshooting, work with multi-team and engage with L2 support engineers and partners - Monitoring Strategy & Implementation - Define and implement monitoring frameworks for enterprise applications, Middleware, and infrastructure. - Deploy and configure monitoring tools (eg, Dynatrace, AppDynamics, Splunk, Prometheus, Grafana, Datadog). - Establish KPIs, dashboards, and alerting mechanisms for proactive issue detection.
Blue chip client is looking for an Application and Monitoring SME - Role is based full time on site in Wokingham. Candidates must be eligible for SC Clearance. MUST BE PAYE THROUGH UMBRELLA (INSIDE IR35) Working from Warwick office, ideally within 1 hours travel - Wokingham office considered but needs to travel to Warwick office for training - Primary skills - L1 monitoring/observability, ITIL process, incident, MIM, etc - Secondary skills - L1 troubleshooting, work with multi-team and engage with L2 support engineers and partners - Monitoring Strategy & Implementation - Define and implement monitoring frameworks for enterprise applications, Middleware, and infrastructure. - Deploy and configure monitoring tools (eg, Dynatrace, AppDynamics, Splunk, Prometheus, Grafana, Datadog). - Establish KPIs, dashboards, and alerting mechanisms for proactive issue detection.
Blue chip client is looking for an Application and Monitoring SME - Role is based full time on site in Warwick - Candidates must be eligible for SC Clearance. MUST BE PAYE THROUGH UMBRELLA (INSIDE IR35) Working from Warwick office, ideally within 1 hours travel - Wokingham office considered but needs to travel to Warwick office for training - Primary skills - L1 monitoring/observability, ITIL process, incident, MIM, etc - Secondary skills - L1 troubleshooting, work with multi-team and engage with L2 support engineers and partners - Monitoring Strategy & Implementation - Define and implement monitoring frameworks for enterprise applications, Middleware, and infrastructure. - Deploy and configure monitoring tools (eg, Dynatrace, AppDynamics, Splunk, Prometheus, Grafana, Datadog). - Establish KPIs, dashboards, and alerting mechanisms for proactive issue detection.
Blue chip client is looking for an Application and Monitoring SME - Role is based full time on site in Warwick - Candidates must be eligible for SC Clearance. MUST BE PAYE THROUGH UMBRELLA (INSIDE IR35) Working from Warwick office, ideally within 1 hours travel - Wokingham office considered but needs to travel to Warwick office for training - Primary skills - L1 monitoring/observability, ITIL process, incident, MIM, etc - Secondary skills - L1 troubleshooting, work with multi-team and engage with L2 support engineers and partners - Monitoring Strategy & Implementation - Define and implement monitoring frameworks for enterprise applications, Middleware, and infrastructure. - Deploy and configure monitoring tools (eg, Dynatrace, AppDynamics, Splunk, Prometheus, Grafana, Datadog). - Establish KPIs, dashboards, and alerting mechanisms for proactive issue detection.
)
We need talented engineers with a strong low-level graphics and GPU development background on the Android platform, ideally with experience of working in the consumer electronics industry. This contract will be hybrid (3 days a week onsite, 2 remote), based near Egham. Its within IR35 but offering a good rate to offset that! The successful candidate will contribute to new, high-performance graphics solutions, integrate our solutions with new hardware platforms, optimise the Android OS graphics stack, benchmark our systems against competitors, work with 3rd party software developers and generally ensure that we have the best possible graphics experience on the market. Role and Responsibilities - Develop innovations to optimise real-time rendering pipelines and deliver class-leading performance - Implement standard features and extensions for the Android Graphics stack
We need talented engineers with a strong low-level graphics and GPU development background on the Android platform, ideally with experience of working in the consumer electronics industry. This contract will be hybrid (3 days a week onsite, 2 remote), based near Egham. Its within IR35 but offering a good rate to offset that! The successful candidate will contribute to new, high-performance graphics solutions, integrate our solutions with new hardware platforms, optimise the Android OS graphics stack, benchmark our systems against competitors, work with 3rd party software developers and generally ensure that we have the best possible graphics experience on the market. Role and Responsibilities - Develop innovations to optimise real-time rendering pipelines and deliver class-leading performance - Implement standard features and extensions for the Android Graphics stack
)
Full Stack Software Engineer - Central London (1 day a month) Circa £80,000 (depending on experience) + excellent benefits package - My client are a start-up created within and as part of a large wealth management firm, so you have all the benefits of a start-up environment without the instability and inconveniences! It's an exciting environment where you'll be working with a cutting-edge tech stack creating data-driven fintech software for major financial firms. What will you do in the role? You'll be part of a high-quality Software Engineering team working with the latest tech to integrate my client's new, bespoke, in-house wealth management software with a queue of new clients while starting to plan for V2, alongside contributing your own ideas for future functions and improvements. You'll have a specific focus on CI/CD pipelines and the deployment process, reviewi
Full Stack Software Engineer - Central London (1 day a month) Circa £80,000 (depending on experience) + excellent benefits package - My client are a start-up created within and as part of a large wealth management firm, so you have all the benefits of a start-up environment without the instability and inconveniences! It's an exciting environment where you'll be working with a cutting-edge tech stack creating data-driven fintech software for major financial firms. What will you do in the role? You'll be part of a high-quality Software Engineering team working with the latest tech to integrate my client's new, bespoke, in-house wealth management software with a queue of new clients while starting to plan for V2, alongside contributing your own ideas for future functions and improvements. You'll have a specific focus on CI/CD pipelines and the deployment process, reviewi
LSEG is seeking a Senior Vulnerability Management Engineer to join our internal offensive security team with focus on driving closure of penetration testing findings. This role bridges offensive security and engineering by translating penetration test results into clear, actionable remediation guidance and partnering with application and platform teams to implement secure fixes. The successful candidate has a strong penetration testing or application security background, hands on remediation experience, and the ability to coordinate multiple collaborators to reduce risk at scale. This is a highly technical, delivery focused role with responsibility for both individual findings and systemic improvements. Key Responsibilities * Analyze and review penetration test reports to understand technical impact, exploitability, and business risk.
LSEG is seeking a Senior Vulnerability Management Engineer to join our internal offensive security team with focus on driving closure of penetration testing findings. This role bridges offensive security and engineering by translating penetration test results into clear, actionable remediation guidance and partnering with application and platform teams to implement secure fixes. The successful candidate has a strong penetration testing or application security background, hands on remediation experience, and the ability to coordinate multiple collaborators to reduce risk at scale. This is a highly technical, delivery focused role with responsibility for both individual findings and systemic improvements. Key Responsibilities * Analyze and review penetration test reports to understand technical impact, exploitability, and business risk.
)
London, Bristol or Edinburgh - We are working with a leading energy technology company that has built a major intelligence platform used by global energy and automotive brands. Their work helps accelerate the shift to reliable and affordable clean energy. The business operates internationally and promotes a flexible, hybrid approach to work. The Role - The company is hiring a Machine Learning Engineer at Tech Lead level to join a central ML team supporting Product and Engineering groups. You will design and productionise ML, optimisation and GenAI solutions that sit at the core of their platform. Projects include forecasting, recommendation systems and classification tools. Key Responsibilities * Build ML and GenAI solutions in Python, using Databricks, Kafka and AWS * Deploy and maintain algorithms in a microservices environment
London, Bristol or Edinburgh - We are working with a leading energy technology company that has built a major intelligence platform used by global energy and automotive brands. Their work helps accelerate the shift to reliable and affordable clean energy. The business operates internationally and promotes a flexible, hybrid approach to work. The Role - The company is hiring a Machine Learning Engineer at Tech Lead level to join a central ML team supporting Product and Engineering groups. You will design and productionise ML, optimisation and GenAI solutions that sit at the core of their platform. Projects include forecasting, recommendation systems and classification tools. Key Responsibilities * Build ML and GenAI solutions in Python, using Databricks, Kafka and AWS * Deploy and maintain algorithms in a microservices environment
)
We are looking for an experienced Appian Developer to support integration and automation initiatives within a leading financial services organisation. This role focuses on connecting systems, automating complex business processes, and improving operational efficiency. * Design, develop, and maintain Appian applications to support fraud and spam prevention workflows. * Build and manage system integrations (APIs, web services, and third-party platforms) * Automate business processes to improve accuracy, speed, and resilience. * Working with offshore teams to complete end-to-end delivery, from requirements gathering to deployment * Ensure solutions meet security, compliance, and performance standards expected in financial services. * Must have proven experience as an Appian Developer. * Must have a strong background in system integration, process automation and APIs.
We are looking for an experienced Appian Developer to support integration and automation initiatives within a leading financial services organisation. This role focuses on connecting systems, automating complex business processes, and improving operational efficiency. * Design, develop, and maintain Appian applications to support fraud and spam prevention workflows. * Build and manage system integrations (APIs, web services, and third-party platforms) * Automate business processes to improve accuracy, speed, and resilience. * Working with offshore teams to complete end-to-end delivery, from requirements gathering to deployment * Ensure solutions meet security, compliance, and performance standards expected in financial services. * Must have proven experience as an Appian Developer. * Must have a strong background in system integration, process automation and APIs.
LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.
LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. Its how weve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services and our open-access model we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.
)
Strong expertise across API management, event-driven architecture, microservices, and hybrid cloud
Strong expertise across API management, event-driven architecture, microservices, and hybrid cloud
PREMIUM
)
Solutions Architect - 2 Days Either London or Peterborough/Rest Remote
Solutions Architect - 2 Days Either London or Peterborough/Rest Remote
ZENZO DIGITAL LTD
City of London (EC1)
From £75,000 to £85,000 per annum + Bens
Kubernetes and API Design'
Kubernetes and API Design'
)
Define and govern API-led connectivity and enterprise integration patterns * Deep understanding of MuleSoft architecture, integration patterns, and API-led design
Define and govern API-led connectivity and enterprise integration patterns * Deep understanding of MuleSoft architecture, integration patterns, and API-led design
FEATURED
)
The successful applicant will have comprehensive expertise in Microsoft Azure services, Web API, Azure App Service, .NET Core, and Visual Studio. * Design and implement scalable cloud solutions utilizing Azure App Service, Web API, and .NET Core. * Define architecture patterns for microservices, API management, and integration with enterprise systems. * Utilize Azure Functions, Azure Logic Apps, Azure API Management, and Azure Storage to develop robust applications. * Expertise in Microsoft Azure services, including App Service, Functions, API Management, Storage, and Networking. * Strong knowledge of .NET Core, Web API, C#, and Visual Studio.
The successful applicant will have comprehensive expertise in Microsoft Azure services, Web API, Azure App Service, .NET Core, and Visual Studio. * Design and implement scalable cloud solutions utilizing Azure App Service, Web API, and .NET Core. * Define architecture patterns for microservices, API management, and integration with enterprise systems. * Utilize Azure Functions, Azure Logic Apps, Azure API Management, and Azure Storage to develop robust applications. * Expertise in Microsoft Azure services, including App Service, Functions, API Management, Storage, and Networking. * Strong knowledge of .NET Core, Web API, C#, and Visual Studio.
)
Penetration Tester (Active SC Clearance)
Penetration Tester (Active SC Clearance)
Infoplus Technologies UK Ltd
Warwick (CV34)
From £350 to £400 per day
Experience working in API testing, Network technologies and cloud solutions
Experience working in API testing, Network technologies and cloud solutions
)
Full Stack Engineer Python TypeScript
Full Stack Engineer Python TypeScript
Client Server
St James, South West London (SW1), SW1A
£100000 - £120000 per annum + bonus + benefits
You have strong backend Python coding skills, including API development
You have strong backend Python coding skills, including API development
PREMIUM
)
5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API * Experience developing REST API-driven mobile first web applications
5+ years experience in working with the .NET framework, particularly with ASP.NET Core, React/React Native, C#, Web API * Experience developing REST API-driven mobile first web applications
)
Skilled in API development and microservices architecture
Skilled in API development and microservices architecture
Expertise in system and API design, scalability, and performance tuning
Expertise in system and API design, scalability, and performance tuning
)
Hands-on experience with API development and microservices architecture and end-to-end integrations * Hands-on experience with API development and microservices architecture * Knowledge of API Gateways and ISTIO, ability to diagnose and intercept failures in end-to-end communication
Hands-on experience with API development and microservices architecture and end-to-end integrations * Hands-on experience with API development and microservices architecture * Knowledge of API Gateways and ISTIO, ability to diagnose and intercept failures in end-to-end communication
)
Senior Full Stack Engineer
Senior Full Stack Engineer
McGregor Boyall Associates Limited
City of London (EC1)
£80000 - £120000 per annum + bonus
Strong knowledge of system design principles, scalable architecture patterns, and API design.
Strong knowledge of system design principles, scalable architecture patterns, and API design.
AWS: API gateway, RDS, Cloudfront, Cognito, Terraform, GitHub, GitFlow pipelines
AWS: API gateway, RDS, Cloudfront, Cognito, Terraform, GitHub, GitFlow pipelines
)
Experience building maintainable and testable code bases, including API design and unit testing techniques
Experience building maintainable and testable code bases, including API design and unit testing techniques
Related Jobs
Locations
- The City, City (EC4)
- Hinxton
- Southwark
- The City, City (EC2)
- Arundel Heights
- Budbrooke Industrial Estate
- Cassington
- Covent Garden
- Datchet Common
- Euston
- City of London
- Milton Keynes
- Cambridge
- Central London
- Reading
- South East London
- Warwick
- West End
- Stevenage
- Abingdon
- London
- Berkshire
- Buckinghamshire
- Hertfordshire
- Oxfordshire
- Cambridgeshire
- Warwickshire
- Bedfordshire
- Essex
- Lincolnshire
- South East
- Midlands
- East Anglia
- West Midlands
- East Midlands