Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Popular searches nearby
Other popular locations
Salaries
Date posted
Type of Company
Job types
141 Contract API jobs in South East London + 20 miles
)
12 months - Remote - Inside IR35 - Umbrella only - As a Salesforce Developer, you will lead the development of custom solutions on the Salesforce platform. You will be responsible for writing Apex code, creating visual force pages, and implementing integrations. You will have a strong understanding of the Salesforce platform and experience leading successful projects. A Senior Salesforce Developer will have a deep understanding of the Salesforce platform and the ability to develop complex solutions, mentor and lead the development team, troubleshoot and provide technical support to clients. They will also have a solid understanding of web development concepts and languages and keep up-to-date with new Salesforce features and best practices. * Skilled in Apex, HTML, JavaScript (ES6+), CSS, SLDS, and Salesforce DX.
12 months - Remote - Inside IR35 - Umbrella only - As a Salesforce Developer, you will lead the development of custom solutions on the Salesforce platform. You will be responsible for writing Apex code, creating visual force pages, and implementing integrations. You will have a strong understanding of the Salesforce platform and experience leading successful projects. A Senior Salesforce Developer will have a deep understanding of the Salesforce platform and the ability to develop complex solutions, mentor and lead the development team, troubleshoot and provide technical support to clients. They will also have a solid understanding of web development concepts and languages and keep up-to-date with new Salesforce features and best practices. * Skilled in Apex, HTML, JavaScript (ES6+), CSS, SLDS, and Salesforce DX.
FEATURED
)
Graduate IT Project Manager
Graduate IT Project Manager
Inspiring Search
Wealdstone, Harrow (HA3), HA3 5EQ
From £28,000 to £32,000 per annum
We are one of the leading plumbing, heating and electrical companies nationally, serving residential and commercial clients throughout South East England with almost three decades in the industry, we have worked to build a large, fully equipped team of over 150 members of staff all focused on providing the best quality service to our customers. We work closely with various known housing associations, local councils as well as catering to the private sector such as schools, hotels, care homes and commercial building. Support the delivery and improvement of the business systems and information security. The Graduate IT Project Manager will coordinate with a third-party IT development partners, assist in implementing system enhancements, manage company IT assets, and help maintain access control and documentation processes across the business.
We are one of the leading plumbing, heating and electrical companies nationally, serving residential and commercial clients throughout South East England with almost three decades in the industry, we have worked to build a large, fully equipped team of over 150 members of staff all focused on providing the best quality service to our customers. We work closely with various known housing associations, local councils as well as catering to the private sector such as schools, hotels, care homes and commercial building. Support the delivery and improvement of the business systems and information security. The Graduate IT Project Manager will coordinate with a third-party IT development partners, assist in implementing system enhancements, manage company IT assets, and help maintain access control and documentation processes across the business.
)
Senior Analytics Implementation Engineer
Senior Analytics Implementation Engineer
Stepstone UK
Southwark, South East London (SE1), SE1 0TA
Competitive salary
Company Description - At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for job seekers and companies around the world to find a perfect match, in fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the worlds leading job-tech platform. Your benefits - Were a community here that cares as much about your life outside work as how you feel when youre with us. Because your job shouldnt take over your life, it should enrich it. * 29 days holiday allowance + bank holidays * Private medical and dental healthcare * Pension contribution up to 10% * Training and development opportunities * Cycle to work scheme * In house Bari
Company Description - At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for job seekers and companies around the world to find a perfect match, in fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 4,000+ employees and be part of reshaping the labour market and becoming the worlds leading job-tech platform. Your benefits - Were a community here that cares as much about your life outside work as how you feel when youre with us. Because your job shouldnt take over your life, it should enrich it. * 29 days holiday allowance + bank holidays * Private medical and dental healthcare * Pension contribution up to 10% * Training and development opportunities * Cycle to work scheme * In house Bari
PREMIUM
)
Dev/Ops Lead - PaaS Platform | Hybrid (Central London) 83zero is partnered with an exciting, fast-growing startup that's making serious moves in the B2B2C social media space. They're building a next-gen Platform-as-a-Service that's already gaining traction across global media ecosystems - and they're now looking for a DevOps Lead to join their journey. This is a hands-on leadership role where you'll own the technical direction of a serverless, event-driven, globally distributed platform built on AWS. You'll lead a distributed engineering team, shape high-performance APIs, and build systems that scale hard and run clean. What's On Offer * Competitive salary + performance bonus. * Meaningful equity - build it, own it, grow with it. * Hybrid/remote-first working culture. * A seat at the decision table in a fast-scaling SaaS business.
Dev/Ops Lead - PaaS Platform | Hybrid (Central London) 83zero is partnered with an exciting, fast-growing startup that's making serious moves in the B2B2C social media space. They're building a next-gen Platform-as-a-Service that's already gaining traction across global media ecosystems - and they're now looking for a DevOps Lead to join their journey. This is a hands-on leadership role where you'll own the technical direction of a serverless, event-driven, globally distributed platform built on AWS. You'll lead a distributed engineering team, shape high-performance APIs, and build systems that scale hard and run clean. What's On Offer * Competitive salary + performance bonus. * Meaningful equity - build it, own it, grow with it. * Hybrid/remote-first working culture. * A seat at the decision table in a fast-scaling SaaS business.
)
We are delighted to be partnering with a successful technology consultancy that is expanding its Software Development team. This is an excellent opportunity for a proactive and committed Software Developer with experience in C#, JavaScript, and SQL to contribute to impactful projects across a diverse client base. About the role - As a Software Developer, you will be working on the development, and maintenance of their internal software product, ensuring seamless integrations into their clients CRM systems. You'll also get involved with external projects, collaborating closely with clients to understand their needs, and design effective solutions. This role blends hands-on technical work with client interaction, giving you the chance to make a visible impact. Key Responsibilities * Design, develop, and maintain new features and applications using modern software develo
We are delighted to be partnering with a successful technology consultancy that is expanding its Software Development team. This is an excellent opportunity for a proactive and committed Software Developer with experience in C#, JavaScript, and SQL to contribute to impactful projects across a diverse client base. About the role - As a Software Developer, you will be working on the development, and maintenance of their internal software product, ensuring seamless integrations into their clients CRM systems. You'll also get involved with external projects, collaborating closely with clients to understand their needs, and design effective solutions. This role blends hands-on technical work with client interaction, giving you the chance to make a visible impact. Key Responsibilities * Design, develop, and maintain new features and applications using modern software develo
£80000-100000 GBP - Equity - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent - London (4 days onsite) £80,000 to £100,000 base plus package - A high-growth B2B fintech scale-up transforming how complex industries handle payments and financial workflows are growing their engineering team! They're profitable, well-funded, and engineering-led, and as their newest Engineer you'll shape their core platform and take ownership of critical features. This is a hands-on senior role where you can influence the technical direction, own features and build software that has a real impact. * Build and scale end-to-end features across the full stack using .NET and React * Work with SQL and NoSQL databases to deliver robust, high-performance solutions * Design, maintain and optimise cloud-based services on AWS, GCP or Azure
£80000-100000 GBP - Equity - Hybrid WORKING - Location: Central London, Greater London - United Kingdom Type: Permanent - London (4 days onsite) £80,000 to £100,000 base plus package - A high-growth B2B fintech scale-up transforming how complex industries handle payments and financial workflows are growing their engineering team! They're profitable, well-funded, and engineering-led, and as their newest Engineer you'll shape their core platform and take ownership of critical features. This is a hands-on senior role where you can influence the technical direction, own features and build software that has a real impact. * Build and scale end-to-end features across the full stack using .NET and React * Work with SQL and NoSQL databases to deliver robust, high-performance solutions * Design, maintain and optimise cloud-based services on AWS, GCP or Azure
PREMIUM
)
C# .NET Software Developer with FX and Fixed Income
C# .NET Software Developer with FX and Fixed Income
Nexus Jobs
City of London (EC1)
From £80,000 to £100,000 per annum
Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding of FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just making up the numbers.
Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates ideally with some understanding Trading Floor projects to include Fixed Income, Risk Management, Swap Options and FX. You need to be resilient as you will be working closely with traders and developing financial trading systems so an understanding of FX instruments would be very useful. The Company is a fast growing dynamic brokerage firm, specialising in currency options and interest rate swaps. They are seeking a talented technologist to join the London team. You will be working in a fast paced, delivery focused environment where you will get the opportunity to make a genuine impact on the business rather than just making up the numbers.
)
Senior Software Engineer .NET React
Senior Software Engineer .NET React
Anson Mccade
South East London (SE1)
From £80,000 to £105,000 per annum
Senior Software Engineer (Early-Stage SaaS | .NET & React)?? London | ?? On-site | ?? Full-time | ?? Up to £100k + equity - The Role - A fast-growing startup is building a financial operations platform and is looking for a hands-on Senior Software Engineer. Youll help build the product from the ground up, own key features, and have a real influence on both the technology and the direction of the platform. What Youll Do * Build new features across the backend and frontend * Work with .NET and a modern JavaScript framework (React used internally) * Help shape the architecture as the platform scales * Work closely with founders, engineers and product teams * Take ideas from concept to production - What You Need * Experience building software with .NET or another modern backend language * Experience with JavaScript/TypeScript on the frontend * Comfortable working with API
Senior Software Engineer (Early-Stage SaaS | .NET & React)?? London | ?? On-site | ?? Full-time | ?? Up to £100k + equity - The Role - A fast-growing startup is building a financial operations platform and is looking for a hands-on Senior Software Engineer. Youll help build the product from the ground up, own key features, and have a real influence on both the technology and the direction of the platform. What Youll Do * Build new features across the backend and frontend * Work with .NET and a modern JavaScript framework (React used internally) * Help shape the architecture as the platform scales * Work closely with founders, engineers and product teams * Take ideas from concept to production - What You Need * Experience building software with .NET or another modern backend language * Experience with JavaScript/TypeScript on the frontend * Comfortable working with API
PREMIUM
)
12 months - Remote - Inside IR35 - Umbrella only - Active SC clearance required - As a Salesforce Developer, you will lead the development of custom solutions on the Salesforce platform. You will be responsible for writing Apex code, creating visual force pages, and implementing integrations. You will have a strong understanding of the Salesforce platform and experience leading successful projects. A Senior Salesforce Developer will have a deep understanding of the Salesforce platform and the ability to develop complex solutions, mentor and lead the development team, troubleshoot and provide technical support to clients. They will also have a solid understanding of web development concepts and languages and keep up-to-date with new Salesforce features and best practices. * Skilled in Apex, HTML, JavaScript (ES6+), CSS, SLDS, and Salesforce DX.
12 months - Remote - Inside IR35 - Umbrella only - Active SC clearance required - As a Salesforce Developer, you will lead the development of custom solutions on the Salesforce platform. You will be responsible for writing Apex code, creating visual force pages, and implementing integrations. You will have a strong understanding of the Salesforce platform and experience leading successful projects. A Senior Salesforce Developer will have a deep understanding of the Salesforce platform and the ability to develop complex solutions, mentor and lead the development team, troubleshoot and provide technical support to clients. They will also have a solid understanding of web development concepts and languages and keep up-to-date with new Salesforce features and best practices. * Skilled in Apex, HTML, JavaScript (ES6+), CSS, SLDS, and Salesforce DX.
FEATURED
)
Salesforce QA Engineer
Salesforce QA Engineer
Yolk Recruitment
Morden, London (SM4)
£50000.00 - £60000.00 per annum + + excellent benefits
Yolk Recruitment are working with a leading global organisation that continues to grow and invest in its Salesforce capability. Known for its collaborative culture and commitment to continuous improvement, this is an excellent opportunity for a Salesforce QA Tester to make a real impact within a forward-thinking technology team. We're looking for someone who's passionate about quality and experienced in ensuring Salesforce solutions meet the highest standards of reliability and performance. You'll work closely with cross-functional teams to test, validate, and optimise Salesforce functionality, integrations, and custom developments. * Collaborate with developers, business analysts, and project teams to understand requirements and define effective test strategies. * Perform thorough manual testing of Salesforce applications, identifying and documenting defects for ...
Yolk Recruitment are working with a leading global organisation that continues to grow and invest in its Salesforce capability. Known for its collaborative culture and commitment to continuous improvement, this is an excellent opportunity for a Salesforce QA Tester to make a real impact within a forward-thinking technology team. We're looking for someone who's passionate about quality and experienced in ensuring Salesforce solutions meet the highest standards of reliability and performance. You'll work closely with cross-functional teams to test, validate, and optimise Salesforce functionality, integrations, and custom developments. * Collaborate with developers, business analysts, and project teams to understand requirements and define effective test strategies. * Perform thorough manual testing of Salesforce applications, identifying and documenting defects for ...
Strong understanding of RESTful API integration, authentication, and security practices.
Strong understanding of RESTful API integration, authentication, and security practices.
Rest API
Rest API
NEWFEATURED
)
Technical Architect, Azure
Technical Architect, Azure
ARC IT Recruitment Ltd
The City, City of London (EC3), EC3M 5BN
Up to £95,000 per annum bonus + benefits
Azure, API, PaaS * In-depth knowledge of Azure cloud services (PaaS, Containers, AKS, Logic Apps, API Management, Service Bus, Event Grid).
Azure, API, PaaS * In-depth knowledge of Azure cloud services (PaaS, Containers, AKS, Logic Apps, API Management, Service Bus, Event Grid).
)
Senior Backend Engineer
Senior Backend Engineer
Plexus Resource Solutions Ltd
City of London (EC1)
From £60,000 to £100,000 per annum
Use Rest API with Python
Use Rest API with Python
Senior Security Engineer (Defender, PurView, Sentinel)
Senior Security Engineer (Defender, PurView, Sentinel)
Invitise Ltd
City of London (EC1A)
Up to £500 per day
PowerShell scripting and use of Microsoft Graph API
PowerShell scripting and use of Microsoft Graph API
NEW
)
Azure PaaS, Function Apps, Blob/Table Storage, Service Bus Topics, Azure Search and API Management
Azure PaaS, Function Apps, Blob/Table Storage, Service Bus Topics, Azure Search and API Management
FEATURED
)
Senior Data Engineer - SC Cleared - OUTSIDE IR35
Senior Data Engineer - SC Cleared - OUTSIDE IR35
Sanderson Government and Defence
City of London (EC1), EC1
Up to £580 per day
Devops experience a bonus e.g. Terraform, Drone, Kubernetes cluster management for microservice style API data consumption
Devops experience a bonus e.g. Terraform, Drone, Kubernetes cluster management for microservice style API data consumption
FEATURED
)
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.
)
Our client is developing a platform that streamlines operations and connectivity for firms in the alternative investments space through an API-driven architecture.
Our client is developing a platform that streamlines operations and connectivity for firms in the alternative investments space through an API-driven architecture.
Machine Learning Engineer (Reinforcement Learning)
Machine Learning Engineer (Reinforcement Learning)
FBI &TMT
City of London, London
Up to £85000.00 per annum
Familiarity with model deployment and management, including API development, deployment pipelines, and performance optimisation.
Familiarity with model deployment and management, including API development, deployment pipelines, and performance optimisation.
)
AI Prompt Engineer
AI Prompt Engineer
Staffworx Limited
East London (E1)
market rates, outside IR35, remote first, UK but 1-2 days on site
Integrate LLMs into applications usingLangChain,LlamaIndex,Haystack,AutoGen and OpenAIs Assistant API patterns.
Integrate LLMs into applications usingLangChain,LlamaIndex,Haystack,AutoGen and OpenAIs Assistant API patterns.
)
Head of Development and AI
Head of Development and AI
McCabe & Barton
City of London (EC1V)
Up to £170,000 per annum Plus Excellent benefits package
Knowledge of microservices architecture, API design (REST, GraphQL)
Knowledge of microservices architecture, API design (REST, GraphQL)
Lead Software Developer - Python / AWS / React
Lead Software Developer - Python / AWS / React
Tech 4
East London (E1)
From £72,000 to £76,000 per annum + excellent benefits
Experience with AWS services (Lambda, SQS, API gateways, S3).
Experience with AWS services (Lambda, SQS, API gateways, S3).
Experience with AWS services (Lambda, SQS, API gateways, S3).
Experience with AWS services (Lambda, SQS, API gateways, S3).
)
Shift to the left: Functional test automation (API testing, UI testing [cucumber, nightwatch])
Shift to the left: Functional test automation (API testing, UI testing [cucumber, nightwatch])