Reference: 57984Location: London, United KingdomIndustry: Financial ServicesSalary: 160,000Overview We are seeking a Senior Full Stack Developer to build and enhance high-performance, secure digital products within Financial Services.
Are you the right candidate for this opportunity Make sure to read the full description below.
You will work across backend services and modern web front ends, contributing to architecture, delivery, and continuous improvement.
This is a hands-on role with strong influence over engineering standards, quality, and technical direction.Key Responsibilities Design, develop, test, and maintain scalable services using C#/.NET (ASP.NET Core) and RESTful APIs.Build responsive, accessible user interfaces using React, TypeScript, HTML, and CSS.Implement secure authentication/authorisation (e.g., OAuth2/OIDC) and follow secure coding practices.Optimise performance, reliability, and observability (logging, metrics, tracing).Work with relational databases (e.g., SQL Server) including schema design, queries, and tuning.Write automated tests (unit, integration, end-to-end) and participate in code reviews.Collaborate with product, design, and stakeholders to refine requirements and deliver iteratively.Contribute to CI/CD pipelines and cloud deployment practices.Mentor engineers and promote best practice in engineering craft and delivery.Required Skills & Experience Extensive commercial experience in full stack development with C#/.NET and React.Strong knowledge of .NET Core, dependency injection, asynchronous programming, and API design.Strong React experience including state management and modern front-end tooling.Solid understanding of software design principles, patterns, and clean code practices.Experience with SQL databases, ORM tooling (e.g., Entity Framework), and data modelling.Experience with cloud platforms (Azure and/or AWS), containerisation (Docker), and CI/CD.Understanding of Financial Services constraints: security, auditability, data protection, and resiliency.Strong communication skills and ability to work effectively in an agile environment.Desirable Experience with microservices, event-driven architecture (e.g., Kafka/RabbitMQ), and distributed systems.Infrastructure as Code (e.g., Terraform/Bicep) and advanced monitoring/alerting practices.Experience building systems with low latency and high throughput requirements.What You’ll Bring Ownership mindset, pragmatic decision-making, and a focus on delivering value safely. xsabvtc Commitment to engineering excellence, continuous learning, and improving team ways of working.
Senior Full Stack Developer | C#.NET, React | London in Vauxhall employer: Source Group International
As a Lead Data Engineer in London, you will join a forward-thinking company that prioritises innovation and employee development. With a strong emphasis on collaboration and mentorship, the work culture fosters continuous learning and growth, while competitive salaries and comprehensive benefits ensure a rewarding experience. The vibrant London location offers unique networking opportunities and access to a diverse tech community, making it an excellent place for professionals seeking meaningful and impactful work.
Contact Details:
Source Group International Recruitment Team
