Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
Locations
- Shadwell
- The City, City (EC3)
- Frimley
- Millwall
- Soho
- Southwark
- Bishopsgate
- Brentford End
- Charing Cross
- Clerkenwell
- City of London
- Central London
- West End
- East London
- Reading
- South West London
- Cambridge
- Maidenhead
- Milton Keynes
- Bedford
- London
- Berkshire
- Surrey
- Buckinghamshire
- Oxfordshire
- Bedfordshire
- Cambridgeshire
- Hertfordshire
- Essex
- East Sussex
- South East
- East Anglia
88 Permanent API jobs in South Lambeth + 20 miles
405 exact matches jobs are outside your preferred location
Role Purpose - This is an exciting role in the expanding Security Architecture team at LSEG. The Architecture team reports into the Group CISO. This role is to join the team as a Senior Security Specialist with a view to strengthening and building out our assurance processes as we move from a traditional on-prem operation, into the virtual, software defined and cloud paradigm. Security Architecture Review team is responsible for reviewing the security posture of new systems alongside the Principal Security Architects; Reviewing firewall rule changes in both BAU and strategic initiatives - Successful candidate will be part of Security Architecture Review team to define the roles goals, processes and deliverable, support our strategy to Shift Left and enable the business to achieve its goals in agility and innovation. Role Responsibilities
Role Purpose - This is an exciting role in the expanding Security Architecture team at LSEG. The Architecture team reports into the Group CISO. This role is to join the team as a Senior Security Specialist with a view to strengthening and building out our assurance processes as we move from a traditional on-prem operation, into the virtual, software defined and cloud paradigm. Security Architecture Review team is responsible for reviewing the security posture of new systems alongside the Principal Security Architects; Reviewing firewall rule changes in both BAU and strategic initiatives - Successful candidate will be part of Security Architecture Review team to define the roles goals, processes and deliverable, support our strategy to Shift Left and enable the business to achieve its goals in agility and innovation. Role Responsibilities
LSEG is seeking a Senior Penetration Tester to join our internal offensive security team. This role is hands-on and deeply technical, responsible for planning and driving penetration tests across a wide range of systems and applications. The successful candidate will be a skilled offensive security professional with a passion for uncovering vulnerabilities and improving security posture through thorough testing and teamwork. Key Responsibilities * Conduct in-depth penetration tests on applications, infrastructure, and cloud environments. * Take full ownership of assigned penetration testing engagements end-to-end and deliver with limited oversight. * Compile technical scoping documents, track and document assessment metadata - o Engagement details (who, what, when, where) o Testing team members and roles - o Tools and methodologies used - o Schedule and timelines
LSEG is seeking a Senior Penetration Tester to join our internal offensive security team. This role is hands-on and deeply technical, responsible for planning and driving penetration tests across a wide range of systems and applications. The successful candidate will be a skilled offensive security professional with a passion for uncovering vulnerabilities and improving security posture through thorough testing and teamwork. Key Responsibilities * Conduct in-depth penetration tests on applications, infrastructure, and cloud environments. * Take full ownership of assigned penetration testing engagements end-to-end and deliver with limited oversight. * Compile technical scoping documents, track and document assessment metadata - o Engagement details (who, what, when, where) o Testing team members and roles - o Tools and methodologies used - o Schedule and timelines
Join Us as a Senior Software Development Engineer in Test (SDET)! Overview - We are looking for a Software Development Engineer in Test (SDET) or automation tester who comes from a Java Software Development background. The role is to assist in the development of the new Index platform for the FTSE-Russell Index business of the London Stock Exchange Group (LSEG). The Index Platform team performs the calculation, maintenance and distribution of Index products. You will be working on innovative technologies with a team of engineers to implement solutions which support the strategic growth of the Index business. You will be involved in the development of test tools and solutions as well as new test frameworks, starting from a blank slate in some cases, to help ensure the quality of a greenfield application build.
Join Us as a Senior Software Development Engineer in Test (SDET)! Overview - We are looking for a Software Development Engineer in Test (SDET) or automation tester who comes from a Java Software Development background. The role is to assist in the development of the new Index platform for the FTSE-Russell Index business of the London Stock Exchange Group (LSEG). The Index Platform team performs the calculation, maintenance and distribution of Index products. You will be working on innovative technologies with a team of engineers to implement solutions which support the strategic growth of the Index business. You will be involved in the development of test tools and solutions as well as new test frameworks, starting from a blank slate in some cases, to help ensure the quality of a greenfield application build.
FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes.
FTSE Russell is a leading global provider of financial services, specializing in the creation and management of indexes, data, and analytic solutions. A subsidiary of the London Stock Exchange Group (LSEG), FTSE Russell supports investors worldwide in making informed decisions across asset classes, investment strategies, and market segments. Its products are trusted by institutional and retail investors, asset managers, and pension funds to benchmark performance, build investment portfolios, and manage risk. With a reputation for innovation, transparency, and robust governance, FTSE Russell plays a critical role in shaping global financial markets. FTSE Russell is seeking a hands-on dynamic software development leader to drive a team of software engineers building robust equity index capabilities and indexes.
We are looking for an experienced individual in IT business analysis to take up the role of Senior IT Business Analyst to lead the requirements management process and be involved in the complete product delivery life cycle from conceptualisation to production. The role requires working closely with Product, Engineering and Operations teams to capture, review and build requirements for new product launches and improvements to existing features on the FX Matching Venue. The role presents an opportunity work in a fast-paced high performance environment to deliver value to our customers. Main Responsibilities * Work with product, architecture, engineering, operations teams to produce and sign-off requirements. * Use a multitude of ways to elaborate requirements including diagrams, flowcharts, tables, text to improve the understanding of requirements.
We are looking for an experienced individual in IT business analysis to take up the role of Senior IT Business Analyst to lead the requirements management process and be involved in the complete product delivery life cycle from conceptualisation to production. The role requires working closely with Product, Engineering and Operations teams to capture, review and build requirements for new product launches and improvements to existing features on the FX Matching Venue. The role presents an opportunity work in a fast-paced high performance environment to deliver value to our customers. Main Responsibilities * Work with product, architecture, engineering, operations teams to produce and sign-off requirements. * Use a multitude of ways to elaborate requirements including diagrams, flowcharts, tables, text to improve the understanding of requirements.
)
Meta's Network Security team is seeking an experienced engineer to help secure our global Data Centers, network Backbone, Optical Infrastructure, and Edge PoPs. We do this by working extensively across the Meta family of products, including Instagram, WhatsApp, and AI where we identify and solve security problems across network infrastructure. You will be responsible for building, implementing, and operationally supporting the organization to develop security controls and services that will protect network infrastructure which helps serve traffic for over 3 billion users worldwide. We are looking for engineers with experience in managing complex issues that require problem-solving to drive security and innovation, who will research and develop new solutions to help protect our infrastructure and our users through a defense in-depth approach.
Meta's Network Security team is seeking an experienced engineer to help secure our global Data Centers, network Backbone, Optical Infrastructure, and Edge PoPs. We do this by working extensively across the Meta family of products, including Instagram, WhatsApp, and AI where we identify and solve security problems across network infrastructure. You will be responsible for building, implementing, and operationally supporting the organization to develop security controls and services that will protect network infrastructure which helps serve traffic for over 3 billion users worldwide. We are looking for engineers with experience in managing complex issues that require problem-solving to drive security and innovation, who will research and develop new solutions to help protect our infrastructure and our users through a defense in-depth approach.
)
Location: Onsite (secure location, UK) Clearance: Developed Vetting (eDV) required - Employment Type: Permanent - Overview - We are seeking an experienced Fullstack Software Engineer with active eDV clearance to join a high-performing engineering team working on critical projects within the UK Defence and National Security sector. The successful candidate will be responsible for designing, developing, and maintaining secure, scalable, and high-quality software solutions across both front-end and back-end systems. Key Responsibilities * Design, develop, and maintain fullstack applications with a focus on performance, security, and reliability * Contribute to software architecture and technical decision-making in complex, secure environments * Implement and maintain APIs, databases, and user interfaces * Write clean, maintainable, and testable code following modern engi
Location: Onsite (secure location, UK) Clearance: Developed Vetting (eDV) required - Employment Type: Permanent - Overview - We are seeking an experienced Fullstack Software Engineer with active eDV clearance to join a high-performing engineering team working on critical projects within the UK Defence and National Security sector. The successful candidate will be responsible for designing, developing, and maintaining secure, scalable, and high-quality software solutions across both front-end and back-end systems. Key Responsibilities * Design, develop, and maintain fullstack applications with a focus on performance, security, and reliability * Contribute to software architecture and technical decision-making in complex, secure environments * Implement and maintain APIs, databases, and user interfaces * Write clean, maintainable, and testable code following modern engi
)
HM Land Registry (HMLR) are launching a five-year transformation programme that will modernise core services, build new data and analytics capabilities and deliver user-centred digital solutions used across the country. As a Product Manager, you will help shape services of national importance within a supportive, mature product community where your skills will directly impact how citizens and professionals access vital land and property information. Salary £52,978 (£57,528 London pay band) plus 29% pension contribution and other Civil Service benefits. Flexible, hybrid working from 12 HMLR office locations. As a Product Manager at HMLR, you will own and manage the roadmap for a digital product, service or capability working alongside the Lead Product Managers as well as multi-disciplinary teams including architects, engineers, service designers and user researchers.
HM Land Registry (HMLR) are launching a five-year transformation programme that will modernise core services, build new data and analytics capabilities and deliver user-centred digital solutions used across the country. As a Product Manager, you will help shape services of national importance within a supportive, mature product community where your skills will directly impact how citizens and professionals access vital land and property information. Salary £52,978 (£57,528 London pay band) plus 29% pension contribution and other Civil Service benefits. Flexible, hybrid working from 12 HMLR office locations. As a Product Manager at HMLR, you will own and manage the roadmap for a digital product, service or capability working alongside the Lead Product Managers as well as multi-disciplinary teams including architects, engineers, service designers and user researchers.
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
)
Day Rate: £500 - £700 - Duration: 6 months - IR35: Outside Scope - Overview - Are you a talented Software Developer eager to take on exciting project-based work with leading organisations? We are seeking skilled developers for multiple contract opportunities across various sectors, including tech, finance, and healthcare. * Engage in diverse and challenging projects, delivering immediate value to clients while enhancing your technical skills. * Collaborate with innovative teams to design and implement robust software solutions that meet business needs. * Experience the flexibility of contract work, allowing you to choose projects that align with your expertise and career goals. These contract roles are ideal for developers looking to make an impact quickly and explore different industries while enjoying the freedom of flexible assignments. Key Skills
Day Rate: £500 - £700 - Duration: 6 months - IR35: Outside Scope - Overview - Are you a talented Software Developer eager to take on exciting project-based work with leading organisations? We are seeking skilled developers for multiple contract opportunities across various sectors, including tech, finance, and healthcare. * Engage in diverse and challenging projects, delivering immediate value to clients while enhancing your technical skills. * Collaborate with innovative teams to design and implement robust software solutions that meet business needs. * Experience the flexibility of contract work, allowing you to choose projects that align with your expertise and career goals. These contract roles are ideal for developers looking to make an impact quickly and explore different industries while enjoying the freedom of flexible assignments. Key Skills
)
Market Enterprise Functions - At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good. Your impact - At Jacobs, we are always looking beyond raising the bar and delivering with excellence. We apply our expertise and knowledge as we look to the future with great optimism and focus. We give our best and know that were making a difference. Bring your legal expertise and proven success as a corporate attorney and join our team of legal advisors who help shape the future of Jacobs. The Software Engineering Manager will play an important role in Jacobs Global Technical Excellence team, focusing on managing soft
Market Enterprise Functions - At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good. Your impact - At Jacobs, we are always looking beyond raising the bar and delivering with excellence. We apply our expertise and knowledge as we look to the future with great optimism and focus. We give our best and know that were making a difference. Bring your legal expertise and proven success as a corporate attorney and join our team of legal advisors who help shape the future of Jacobs. The Software Engineering Manager will play an important role in Jacobs Global Technical Excellence team, focusing on managing soft
)
£55000 GBP - Onsite WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent - Hybrid (2-3 days on-site) - UK-based £45,000-£55,000 + Benefits - Join a growing international team at the forefront of Generative AI and data innovation. You'll be working within a developing, cross-functional environment, building and maintaining high-quality, secure datasets that underpin critical internal projects. This is a unique opportunity to apply your data engineering skills to a high-impact, defence-focused setting where your work directly supports national capability. * Designing, deploying, and optimising secure and resilient data pipelines * Collaborating with internal stakeholders to ensure datasets are tailored, reliable, and compliant with governance standards * Applying your expertise in data management, processing, and quality assurance
£55000 GBP - Onsite WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent - Hybrid (2-3 days on-site) - UK-based £45,000-£55,000 + Benefits - Join a growing international team at the forefront of Generative AI and data innovation. You'll be working within a developing, cross-functional environment, building and maintaining high-quality, secure datasets that underpin critical internal projects. This is a unique opportunity to apply your data engineering skills to a high-impact, defence-focused setting where your work directly supports national capability. * Designing, deploying, and optimising secure and resilient data pipelines * Collaborating with internal stakeholders to ensure datasets are tailored, reliable, and compliant with governance standards * Applying your expertise in data management, processing, and quality assurance
PREMIUM
Day Rate: £500 - £700 - Duration: 6 months - IR35: Outside Scope - Overview - Are you a talented Software Developer eager to take on exciting project-based work with leading organizations? We are seeking skilled developers for multiple contract opportunities across various sectors, including tech, finance, and healthcare. * Engage in diverse and challenging projects, delivering immediate value to clients while enhancing your technical skills. * Collaborate with innovative teams to design and implement robust software solutions that meet business needs. * Experience the flexibility of contract work, allowing you to choose projects that align with your expertise and career goals. These contract roles are ideal for developers looking to make an impact quickly and explore different industries while enjoying the freedom of flexible assignments. Key Skills
Day Rate: £500 - £700 - Duration: 6 months - IR35: Outside Scope - Overview - Are you a talented Software Developer eager to take on exciting project-based work with leading organizations? We are seeking skilled developers for multiple contract opportunities across various sectors, including tech, finance, and healthcare. * Engage in diverse and challenging projects, delivering immediate value to clients while enhancing your technical skills. * Collaborate with innovative teams to design and implement robust software solutions that meet business needs. * Experience the flexibility of contract work, allowing you to choose projects that align with your expertise and career goals. These contract roles are ideal for developers looking to make an impact quickly and explore different industries while enjoying the freedom of flexible assignments. Key Skills
)
Do you bring a breadth of technical expertise across reservation systems, Dynamics CRM, and API design? * Deep technical expertise across API design, integration layers, and data flow management.
Do you bring a breadth of technical expertise across reservation systems, Dynamics CRM, and API design? * Deep technical expertise across API design, integration layers, and data flow management.
NEWFEATURED
)
Familiarity with microservices architecture and API development (REST, GraphQL).
Familiarity with microservices architecture and API development (REST, GraphQL).
API-centric architectures.
API-centric architectures.
)
We're looking for a skilled Full-Stack Developer who thrives at the intersection of geospatial data, modern web technologies, and backend API development. Backend: Node.js, Python, .NET (or equivalent) API development * Proven experience in front-end mapping libraries and backend API development
We're looking for a skilled Full-Stack Developer who thrives at the intersection of geospatial data, modern web technologies, and backend API development. Backend: Node.js, Python, .NET (or equivalent) API development * Proven experience in front-end mapping libraries and backend API development
NEW
)
Strong understanding of JSON data structures and API calls.
Strong understanding of JSON data structures and API calls.
NEWFEATURED
)
Have practical knowledge of C#, Web API testing, Azure portal
Have practical knowledge of C#, Web API testing, Azure portal
NEW
)
The Hoddesdon site has state-of-the-art Good Manufacturing Practice (GMP) standard facilities for the development of Active Pharmaceutical Ingredients (API), Formulation Development (FD) and Process Chemistry (PC).
The Hoddesdon site has state-of-the-art Good Manufacturing Practice (GMP) standard facilities for the development of Active Pharmaceutical Ingredients (API), Formulation Development (FD) and Process Chemistry (PC).
NEW
The Hoddesdon site has state-of-the-art Good Manufacturing Practice (GMP) standard facilities for the development of Active Pharmaceutical Ingredients (API), Formulation Development (FD) and Process Chemistry (PC).
The Hoddesdon site has state-of-the-art Good Manufacturing Practice (GMP) standard facilities for the development of Active Pharmaceutical Ingredients (API), Formulation Development (FD) and Process Chemistry (PC).
NEW
)
Experience with relational databases and API design.
Experience with relational databases and API design.
NEW
)
As the leader of the Shipping Platform product, you will guide a team of product managers in delivering cutting-edge solutions across both mobile, web and API platforms at a global scale, ensuring alignment with eBays strategic goals around driving GMV and revenues.
As the leader of the Shipping Platform product, you will guide a team of product managers in delivering cutting-edge solutions across both mobile, web and API platforms at a global scale, ensuring alignment with eBays strategic goals around driving GMV and revenues.
NEW
)
Understanding of web services (HTTP, Web API, Web protocols)
Understanding of web services (HTTP, Web API, Web protocols)
NEW
Senior Java Engineering Lead - Digital Markets Infrastructure
Senior Java Engineering Lead - Digital Markets Infrastructure
London Stock Exchange
South East
Competitive
Solid understanding of REST API design principles.
Solid understanding of REST API design principles.
Related Jobs
Locations
- Shadwell
- The City, City (EC3)
- Frimley
- Millwall
- Soho
- Southwark
- Bishopsgate
- Brentford End
- Charing Cross
- Clerkenwell
- City of London
- Central London
- West End
- East London
- Reading
- South West London
- Cambridge
- Maidenhead
- Milton Keynes
- Bedford
- London
- Berkshire
- Surrey
- Buckinghamshire
- Oxfordshire
- Bedfordshire
- Cambridgeshire
- Hertfordshire
- Essex
- East Sussex
- South East
- East Anglia