17 of 17 API Development Jobs in the South East

Development Manager - Digital & API

Hiring Organisation
Sanderson Recruitment
Location
Surrey, South East, United Kingdom
Employment Type
Permanent
Role: Development Manager - Digital & API Salary: Up to £100,000 per year + Bonus Location: Surrey Working Pattern: Hybrid - 2 days per week onsite (5 days per week during the first month) We're working with a well-established organisation embarking on a company-wide digital transformation programme … investing heavily in modern technology, API development and engineering capability. This is an excellent opportunity for an experienced Development Manager to lead Digital & API engineering teams through a significant period of change. You'll play a key role in driving modern engineering practices, supporting Agile delivery ...

Senior Software Engineer - Java, Cloud and AI

Hiring Organisation
NEEV LIMITED
Location
Waltham Cross, Hertfordshire, South East, United Kingdom
Employment Type
Permanent
role in raising engineering quality, accelerating delivery through automation, and driving continuous improvement across the platform. Job Responsibilities: Executes software solutions including design, development, and technical troubleshooting, with the ability to think beyond routine or conventional approaches to build durable solutions and break down complex technical problems using Java … complex applications (e.g., service boundaries, data flows, interface contracts, resiliency patterns) and is accountable for ensuring design constraints are implemented and validated through software development Gathers, analyses, synthesizes, and develops visualizations and reporting from large, diverse datasets to drive continuous improvement in application performance, resiliency, and operational stability Proactively ...

Full Stack Developer - Permanent - London - Financial Services

Hiring Organisation
Oliver James
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £85,000 per annum
supporting the team's transition from Power BI to Databricks and building out a broader data and application capability. The role combines full-stack development, data visualisation and API development, with experience across Databricks, Python, web development and APIs being particularly relevant. You'll be involved … designing and developing the technical infrastructure and API layers that sit behind applications, as well as proof-of-concept and early-stage solutions. A key part of the role will be technical leadership without direct people management - mentoring and upskilling a relatively junior team, helping establish best practices around ...

Financial Systems Developer (C#.NET Engineer)

Hiring Organisation
Centre People Appointments
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
candidates have led enhancements, maintenance, or improvements of existing systems. This position is especially suitable for those with hands-on experience in financial system development or financial IT consulting. (Ref: YC47581- Please include this when making any enquiries.) Main Responsibilities: Develop, maintain, and enhance financial systems (banking, securities, insurance … optimise databases such as SQL Server Propose and implement improvements or new functionalities for existing systems Coordinate with internal and external stakeholders Ideal Candidate: Development experience with C#.NET (3+ years preferred) Experience with SQL and database operations Knowledge of financial systems or financial operations (e.g., payments, settlements, reporting ...

Agentic AI Software Engineer

Hiring Organisation
Adecco
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
developing next generation AI platforms, cloud native infrastructure, and intelligent agent based applications that support cutting edge scientific research. Key Skills & Experience Strong Python development experience FastAPI and backend API development Cloud platforms (GCP and/or Azure) Kubernetes, Docker, and cloud-native architectures CI/ ...

Senior Product Engineer C#/.NET & AI

Hiring Organisation
Daniel James Resourcing Ltd
Location
Hungerford, Berkshire, South East, United Kingdom
Employment Type
Permanent
Salary
£80,000
customer functionality What we're looking for Youll ideally bring: Strong commercial C#/.NET engineering experience Modern .NET/ASP.NET Core/REST API development Genuine full-stack capability React, Angular, TypeScript, JavaScript or similar SQL and strong software-engineering fundamentals Cloud exposure across Azure and/ ...

Senior Software Engineer

Hiring Organisation
Method Resourcing
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
building backend or distributed systems Cloud experience: GCP preferred, although AWS or Azure is also valuable Experience with Docker and containerised applications Strong REST API development experience Experience with event-driven architectures or messaging Experience working with real-time data or high-throughput systems An understanding of designing ...

Lead Software Engineer .NET

Hiring Organisation
Masson Appointments Ltd
Location
Crawley, West Sussex, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £85,000 per annum
systems and own their reliability Tech Stack Skills: · Language: C# on .NET (primary, and what you’ll write every day) · Frameworks: ASP.NET Core (Web API), Azure Functions (isolated worker) · Database: SQL Server, accessed via Entity Framework Core and/or Dapper (you’ll write queries, design schemas, and optimise … foundation . The Azure-specific skills can be learned on the job. Requirements: You Must Have · 7+ years professional software development experience, primarily in C#/.NET, including time leading, mentoring, or coaching other engineers · People leadership: you’ve coached, mentored, or line-managed developers, and you get satisfaction ...

Software Engineer

Location
Milton Keynes, England, United Kingdom
outcomes without dependency on external PMs Ensure outputs are production-ready, maintainable, and observable from day one Apply AI and automation tooling to accelerate development, testing, and operations Integrations & API Development Both independently and via 3rd Party Engineering team Integrate third-party services, for example payment processors …/KYB providers, fraud platforms, and banking APIs Build and maintain robust API layers including validation, orchestration, and workflow logic Implement secure, PCI-aware designs aligned with payments industry expectations Data & Infrastructure Design and maintain data pipelines and reporting structures using AWS native tooling Apply high availability and fault ...

Data Engineer (FinTech)

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
ambitious team where you will have genuine ownership and visibility across the business. YOUR SKILLS AND EXPERIENCE: You will bring strong capability in: Python development AWS services including Lambda, EC2, CloudWatch and RDS SQL and database development, ideally with PostgreSQL Building, deploying and maintaining end-to-end production … pipelines API development, integration and monitoring within live environments Experience within Lending, FinTech, Banking or Financial Services THE BENEFITS: You will receive a salary of up to £70,000 depending on experience, along with the opportunity to take ownership of a critical function within a rapidly scaling FinTech ...

Full Stack Developer

Hiring Organisation
Corus Consultancy
Location
Crawley, West Sussex, United Kingdom
Employment Type
Permanent
Salary
£50000 - £60000/annum
supporting modern digital services. This is a hands-on engineering role where you will work across the full technology stack, contributing to the design, development, testing and ongoing support of web applications and digital services. You will work within a multidisciplinary product team and collaborate with product managers, business … planning, backlog refinement, stand-ups, reviews and retrospectives. Identify and communicate delivery risks and technical issues at an early stage. Use modern AI-assisted development tools to improve coding, testing, debugging and documentation workflows. Work collaboratively with technical and non-technical colleagues to understand requirements and develop practical solutions. ...

Applications Support Analyst

Hiring Organisation
Kudos Partners
Location
Slough, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
week in the office. Key technical requirements; Proven hands-on Angular or Bigcommerce (or similar) website, mobile app support experience Proven hands-on API development or support experience Proven hands-on Azure ADF, logic app, function app, storage accounts development or support experience Proven hands-on Mobile … middleware, IIS solution development, or support experience Proven hands-on experience in SSIS packages support, DB clustering set up, DB, SSIS upgrades, DB performance tuning. Experience in setting up monitoring and alerting using any monitoring tools e.g. spotlight, solarwinds etc. Power BI and MS fabric experience optional Key responsibilities ...

Frontline AI Engineer - Deploy & Scale Agentic Systems

Location
Crawley, England, United Kingdom
prem, hybrid and restricted environments. You will design production architectures for agentic AI, LLM and vision‐language apps. The role requires strong Python, API development, Docker, cloud deployments, and secure, observable production systems. You will build connectors, CI/CD, monitoring, and ensure reliability, performance and cost efficiency ...

Software Engineer

Location
Milton Keynes, England, United Kingdom
code quality through TDD, CI/CD, and Agile principles. Contributing to cloud-based solutions on AWS/Azure, using Kubernetes, Docker, and API development. Main Skills Needed Strong experience with C# and .Net Core in a professional setting. Familiarity with front-end frameworks such as Typescript and React … desirable). Experience with Web API, Kubernetes/Docker, and cloud platforms like AWS or Azure. Knowledge of SQL and NoSQL databases, with an understanding of REST, SOLID principles, and TDD. Good communication skills and effective team collaboration within an Agile/Scrum environment. What ...

Applications Support Analyst

Hiring Organisation
Kudos Partners
Location
Slough, Berkshire, United Kingdom
Employment Type
Permanent
Salary
GBP 75,000 Annual
week in the office. Key technical requirements; Proven hands-on Angular or Bigcommerce (or similar) website, mobile app support experience Proven hands-on API development or support experience Proven hands-on Azure ADF, logic app, function app, storage accounts development or support exp click apply for full ...

Technical Architect- SC Cleared

Location
Milton Keynes, England, United Kingdom
Architect to take a leading role in designing robust, scalable, and innovative technology solutions for our clients. You will work closely with stakeholders and development teams to ensure the alignment of technology with business goals, while championing best practices in architectural design and delivery. Key Responsibilities Collaborate with development … lead and influence technical discussions. Proven experience as a Technical Architect or similar role. In‐depth knowledge of system design, software architecture, and development methodologies. Experience with cloud platforms (e.g., AWS, Azure, Google Cloud). Expertise in architectural design, data pipelines, cloud platforms, and API development. Knowledge ...

Front-End Developer

Hiring Organisation
Catchfish
Location
Orpington, Kent, United Kingdom
Salary
£ 45 K
position for you! The front-end team is responsible for the delivery of the product.As the Front-End Developer you will be responsible for:API developmentProduct troubleshooting and testingCustomer workflow and user journeysFeature development as well as data visualisationThe successful Front-End Developer will have the following abilities ...