11 of 11 API Development Jobs in the City of London

21st century. We are seeking a Software Engineer to join a dedicated niche team delivering and evolving our clients' technology platforms. Entailing full lifecycle development to help design, build, and refine their systems that keep production workflows running smoothly and efficiently. About the role and responsibilities: Experience with project … Hands-on experience with Airtable or comparable project management platforms Workflow automation: Proven experience designing and implementing automated workflows to drive operational efficiency Scripting & API development: Proficiency in scripting languages such as JavaScript or Python, with experience building or consuming APIs Engineering methodologies: Clear understanding of engineering project ...

hire an Applications Developer into their London team. This is a strong fit for someone with deep Microsoft stack experience, particularly around SharePoint development and ASP.NET applications within enterprise environments. The role will focus on designing, developing, and supporting internal business applications and collaboration platforms across both on-prem … cloud-based environments. Key areas include: • SharePoint 2016/2019/SE & SharePoint Online development and administration • ASP.NET MVC/ASP.NET Core MVC application development • C# and Web API development • SQL Server, Entity Framework & SSRS • Power Platform (PowerApps/Power Automate) • Front-end technologies including React ...

have over half a million users on the platform. Following a successful funding round, we are gearing up for rapid product development and business expansion. the opportunity: This is a rare opportunity as a Full Stack Engineer to work at a venture-backed startup on a totally greenfield project … IDEs and IDE plugins, while still understanding the underlying architecture of our systems and correcting AI agents where they go wrong. Occasionally contribute to development and maintenance of React Native and mobile web front-end. Building and managing resources on Google Cloud Platform, serverless functions and other cloud technology. ...

driving engineering excellence . What You'll Be Doing Designing, building, owning and scaling cloud-native backend services Working across the full software development lifecycle in an agile environment Collaborating with Product Managers and stakeholders to shape technical solutions Building and integrating RESTful APIs Contributing to architecture decisions … software engineering principles (SOLID, testing, clean code) Experience with AWS cloud services Hands-on experience with Django, FastAPI and/or Flask Strong REST API development and integration experience Experience working within Agile/Scrum teams Excellent communication and problem-solving skills Nice to Have Event-driven architecture ...

risk management and backend operations for both corporate and retail trading. You will also contribute to shaping the technical roadmap and improving the Software Development Life Cycle (SDLC). Key Responsibilities: Design, develop, and maintain high-performance backend services for complex data processing systems Architect scalable solutions for high … years of experience in software engineering with strong Core Java expertise At least 2 years of experience working with SQL databases Strong experience in API development and automation Familiarity with cloud platforms such as AWS, Azure, or GCP Experience working in Agile environments Hands-on experience with ...

drive engineering modernisation, cloud adoption, and scalable analytics capabilities within a fast-paced financial environment. You will play a key role in the design, development, and enhancement of enterprise-grade investment and credit trading technology solutions. The role combines hands-on engineering with modern cloud-native delivery practices, automation … assisted software development approaches Responsibilities include: * Develop and enhance full-stack applications supporting investment and trading workflows * Build and optimise cloud-based data platforms and pipelines using Snowflake and DBT * Deliver reporting and analytics solutions using Sigma and Power BI * Support .NET application modernisation and API development ...

highly scalable software solutions to enhance functionality and durability. Collaborate closely with the wider team to refine requirements, ensuring feasibility and pragmatism, and validate development tasks in Jira. Transform designs into highly performant code. Manage design, build, and test bug-fix priorities. Prepare, review, and construct reusable components … Requirements: Minimum of 5 years' Python coding experience 3+ years using the FastAPI framework. AI experience (Claude, Cursor etc) Experience within a Front-end Development role Experience within a line management capacity Proficiency in microservices and related tools Expertise in RESTful API development and management Familiarity with ...

Agentic AI tooling and orchestration frameworks LangChain/LangGraph PyTorch and ML libraries REST APIs Docker and containerisation CI/CD pipelines Git-based development workflows What we're looking for 4-6 years' experience within Software Engineering, AI Engineering, or Machine Learning Engineering roles Strong hands-on Python … engineering practices Exposure to Agentic AI frameworks or autonomous AI workflows Experience working with Azure and Databricks Good understanding of backend engineering and API development Experience collaborating across cross-functional engineering and product teams Ability to mentor or support junior engineers Strong communication and problem-solving skills Package ...

team on Greenfield projects which you'll take ownership of and will see the business impact of. There's a focus on backend and API development although you'll also have elements of front end work with JavaScript and React.js. Location: You'll be based in plush City … office on a fulltime basis, Monday to Friday. About you: You have expertise with C# .Net, ASP.Net development You have a strong knowledge of databases (SQL or Oracle) You're comfortable with JavaScript/React You have a thorough knowledge of Computer Science fundamentals such as OOP, Design Patterns ...

custom solutions with third-party and enterprise systems Leading project delivery and mentoring junior team members What you'll need 3+ years in software development with strong SharePoint, SQL Server, and .NET experience Solid C# skills web API development, Entity Framework, MVC SharePoint across multiple versions ...

Working on ideation, prototypes, and greenfield builds, rather than maintaining or scaling a single product. Creating frontend implementations for CMS-driven projects Supporting backend API development and integrations where needed. Moving between different project types and switching context quickly, as is typical in an agency environment. Must-haves ...