20 of 20 API Development Jobs in the South East

.NET DEVELOPER

Hiring Organisation
Avanti
Location
Crawley, West Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £52,000 per annum
technology stack and wants exposure to enterprise-scale systems used by clients across multiple international markets. You will be involved in the full software development lifecycle, contributing to the development, maintenance, enhancement, and support of business-critical applications. The Role You will work closely with senior developers, technical … business stakeholders to deliver robust software solutions across a range of internal and client-facing platforms. The role offers a strong mix of, backend development, API development, Database work, application support, technical improvements and collaboration across the wider business. This is a hands-on development role ...

.NET Developer (Mid-Level)

Hiring Organisation
Avanti
Location
Crawley, West Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £52,000 per annum
technology stack and wants exposure to enterprise-scale systems used by clients across multiple international markets. You will be involved in the full software development lifecycle, contributing to the development, maintenance, enhancement, and support of business-critical applications. The Role You will work closely with senior developers, technical … business stakeholders to deliver robust software solutions across a range of internal and client-facing platforms. The role offers a strong mix of, backend development, API development, Database work, application support, technical improvements and collaboration across the wider business. This is a hands-on development role ...

Senior Full Stack Engineer

Hiring Organisation
Digital Waffle
Location
Guildford, Surrey, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £75,000 per annum, Inc benefits
business infrastructure-allowing them to work flexibly while delivering high-quality legal services. Key Skills Frontend: Angular (latest versions), TypeScript, RxJS NgRx, REST API integration HTML, SCSS, modern UI frameworks Backend: C#, .NET/.NET Core API development & microservices SQL Server, Azure If this role matches your … business infrastructure-allowing them to work flexibly while delivering high-quality legal services. Key Skills Frontend: Angular (latest versions), TypeScript, RxJS NgRx, REST API integration HTML, SCSS, modern UI frameworks Backend: C#, .NET/.NET Core API development & microservices SQL Server, Azure If this role matches your ...

Senior Software Engineer

Hiring Organisation
Jobleads-UK
Location
Sunbury-on-Thames, England, United Kingdom
within startup or small team environments, comfortable with fast-paced tradeoffs Ability to mentor and review code proactively Solid understanding of database design and API development Key Responsibilities Build and improve core data systems and APIs Manage data pipelines involving high-volume data transformations Own features … including API development, database management, and internal tools Collaborate closely with the engineering team to enhance system performance and scalability Contribute to the team’s technical growth and share knowledge through mentoring and code reviews Requirements Right to work in the UK Experience in a similar senior engineering ...

Software Engineer

Hiring Organisation
Spectrum IT Recruitment
Location
Southampton, England, United Kingdom
issues and claims through a single, customer-focused solution. The team is now growing and looking for another developer to contribute to both new development and the continued improvement of existing services. Software Developer Backend/Full-Stack Southampton, Hampshire – Hybrid, 2–3 days per week in the office … also be scope to work across the full stack for someone who wants broader exposure. The team is also actively exploring how AI-assisted development and agentic systems can improve the way software is built and delivered. You do not need to be an AI tooling expert ...

Software Developer

Hiring Organisation
Spectrum It Recruitment Limited
Location
Southampton, Hampshire, South East, United Kingdom
Employment Type
Permanent
Salary
£70,000
issues and claims through a single, customer-focused solution. The team is now growing and looking for another developer to contribute to both new development and the continued improvement of existing services. Software Developer Backend/Full-Stack Southampton, Hampshire - Hybrid, 2-3 days per week in the office … also be scope to work across the full stack for someone who wants broader exposure. The team is also actively exploring how AI-assisted development and agentic systems can improve the way software is built and delivered. You do not need to be an AI tooling expert ...

Software Engineer

Hiring Organisation
Addition
Location
Milton Keynes, Buckinghamshire, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
deployment, ensuring we meet the evolving needs of our customers with innovative, reliable software. Required Skills: Strong experience in C# and .Net Core development Proficiency with Web API design and development Solid understanding of REST principles and SOLID design patterns Hands-on experience with Docker, Kubernetes …/SCRUM methodologies, CI/CD, and DevOps practices Good communication skills and a collaborative team mindset Nice to Have Skills: Experience with Web API integrations and microservices architecture Knowledge of Kubernetes and container orchestration AWS or Azure certifications or experience Familiarity with WebSocket or real-time data streaming ...

Integration Lead - Secure Digital Platform

Hiring Organisation
Advanced Resource Managers Limited
Location
Reading, Berkshire, UK
Employment Type
Full-time
Clearance - current and active SC Cleared already is strongly preferred Role Description The Integration Lead is responsible for leading the technical design, development, and delivery of secure, scalable, and reusable foundational technology services within the Secure Digital Platform. The Integration Lead partners with Delivery Leads, product owners and architects … delivered solutions align with solution designs and security guardrails. Guide teams in the selection and use of modern tools, frameworks, and platforms that optimise development efficiency and operational effectiveness for delivery. Support the development and evolution of the Secure Digital Platform roadmap by identifying technical dependencies, enablers ...

Integration Lead - Secure Digital Platform

Hiring Organisation
ARM
Location
Reading, Berkshire, United Kingdom
Employment Type
Contract
Clearance - current and active SC Cleared already is strongly preferred Role Description The Integration Lead is responsible for leading the technical design, development, and delivery of secure, scalable, and reusable foundational technology services within the Secure Digital Platform. The Integration Lead partners with Delivery Leads, product owners and architects … delivered solutions align with solution designs and security guardrails. Guide teams in the selection and use of modern tools, frameworks, and platforms that optimise development efficiency and operational effectiveness for delivery. Support the development and evolution of the Secure Digital Platform roadmap by identifying technical dependencies, enablers ...

Senior Azure Cloud Engineer

Hiring Organisation
Mars Recruitment
Location
Abingdon, Oxfordshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum Plus bonus & benefits
Azure CLI used regularly for automation, operational tasks, and reducing manual intervention. Azure Integration Services: proficient in Logic Apps, Service Bus, Event Grid, and API Management for integration design and implementation. API Development: solid experience with SOAP and REST APIs, including design, development, and secure management. … Summer event and 4 sponsored weekends a year. If you’re an Azure Cloud Engineer looking for a career defining opportunity with progression and development, then please drop Lee at MARS an application. MARS Recruitment is an equal opportunities employer and positively welcomes applications from suitably qualified applicants regardless ...

Senior Cloud Engineer

Hiring Organisation
Mars Recruitment
Location
Abingdon, Oxfordshire, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum Plus bonus & benefits
Azure CLI used regularly for automation, operational tasks, and reducing manual intervention. Azure Integration Services: proficient in Logic Apps, Service Bus, Event Grid, and API Management for integration design and implementation. API Development: solid experience with SOAP and REST APIs, including design, development, and secure management. … Summer event and 4 sponsored weekends a year. If you’re an Azure Cloud Engineer looking for a career defining opportunity with progression and development, then please drop Lee at MARS an application. MARS Recruitment is an equal opportunities employer and positively welcomes applications from suitably qualified applicants regardless ...

Senior Python Developer - Banking Experience

Hiring Organisation
Akkodis
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
high-availability, data-intensive applications Collaborate with engineering, data, and business teams Required Experience Strong Python experience (Django, Flask or FastAPI) Proven backend/API development experience Experience within banking or financial services Exposure to cloud (AWS/Azure/GCP) and modern engineering practices Nice To Have ...

Automation Engineer

Hiring Organisation
ALFA TECHNOLOGY RECRUITMENT LTD
Location
South East London, London, United Kingdom
Employment Type
Permanent
Salary
£600 per day Fully Remote
automation pipelines and network environments Create clear and concise technical documentation Contribute to evolving automation standards and best practices What Were Looking For Automation & Development Strong Python skills, including API development, integration, and testing Experience writing high-quality, testable code and participating in code reviews Hands ...

AI Security Engineer

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £100,000 per annum
Security Engineer - Hybrid role in Finance - Up to £100,000 The Role - Build and lead the AI Security Services function, including capability development, tooling and operating models. - Establish secure patterns for model development, deployment and monitoring. - Develop guardrails, detection capabilities and response playbooks for AI-related incidents … Required Skills & Experience - Strong programming and scripting skills specifically python and bash. - Strong knowledge of cloud technologies specifically AWS and Azure. - Strong knowledge of API development and security. - Good understanding/interest in data science methods. - Experience using Python or Power Shell - Proof of using AI for security ...

Senior AI Platform Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£95,000 - £130,000 per annum
Your Skills and Experience Strong commercial experience building AI powered systems in production Experience with LLM frameworks, retrieval systems and agent workflows Full stack development experience, including React Strong system design and API development capability Product focused mindset with a focus on usability and impact Experience ...

Senior Software Engineer, AI/ML Integration

Hiring Organisation
ECM Selection Ltd
Location
Guildford, Surrey, South East, United Kingdom
Employment Type
Permanent
Salary
£80,000
software engineering experience, ideally in engineering or scientific software dealing with large data volumes for an expert userbase Awareness of security and compliance considerations API development, for internal boundaries and potentially external usage Being involved in ensuring operational success through monitoring/diagnostics and troubleshooting for deployments … continuous improvement Languages of interest include Python, C++ and C#. Software may be desktop or web + cloud. Mobile app development is not a primary focus. AI and ML techniques are likely working with numerical data or imaging rather than natural language/LLM. The role offers a highly ...

GOG1JP00004398-Software Engineer (II)

Hiring Organisation
Randstad Technologies
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£349 - £369 per day
drive a massive roadmap spike for highly mature sales, marketing, and event analytics platforms. Your Toolkit Front-End Firepower: High proficiency in modern web development using the latest Angular (17/18) and TypeScript. Backend Mastery: Solid experience with API development, Object-Oriented Programming (OOP), and service ...

Senior Backend Engineer - Data Platform & APIs (Hybrid UK)

Hiring Organisation
Jobleads-UK
Location
Sunbury-on-Thames, England, United Kingdom
Node.js, and AWS, offering the chance to tackle complex data challenges and mentor a small team. The ideal candidate will have strong experience in API development, data pipelines, and database management. With a hybrid working environment, this position promises significant impact and career advancement. #J-18808-Ljbffr ...

Lead Cloud-Native Software Architect

Hiring Organisation
Jobleads-UK
Location
Southampton, England, United Kingdom
using C#. You will lead technical decisions and mentor team members while collaborating with Product Management. Successful candidates will have significant experience with C#, API development, and network security principles. Join us to thrive in a flexible, hybrid work environment with internal growth opportunities. #J-18808-Ljbffr ...

Applications Developer

Hiring Organisation
Ryder Reid Legal Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
aligned with business goals. What They Are Looking For Degree in Computer Science, Information Systems, or related field. Minimum 3 years' experience in software development, with strong skills in SharePoint, SQL Server, and the .NET environment. Proficiency in C#, ASP.NET MVC/Core, and web API development. Experience … with front-end frameworks and modern development practices. Strong problem-solving skills and ability to manage multiple projects. Excellent communication and collaboration skills. Why Apply? This is a fantastic opportunity to join a prestigious global organization that values innovation and offers a collaborative, forward-thinking environment. You'll work ...