Senior Full-Stack Engineer - Cloud-Native FinTech Platform

Vanrath; Belfast City District; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Hybrid working in Belfast

Exposure to cloud-native architecture

Mentorship opportunities

Job summary

Vanrath is seeking a Senior Software Engineer (Full Stack) to join our Belfast team. You will design, develop and deploy a modern fintech platform using TypeScript, React and cloud-native technologies, working closely with cloud partners and senior engineers.

You will own features end-to-end, contribute to architecture, and mentor junior engineers in an agile, collaborative environment. This role offers hybrid working and exposure to large-scale distributed systems.

Qualifications

• At least five years' commercial experience as a Full Stack/Frontend/Backend Software Engineer.
• Strong TypeScript development experience in a professional environment.
• Proficient in React, Redux and React Query, with HTML5, CSS3 and modern JavaScript.
• Experience developing backend services and APIs using TypeScript or other OO languages.
• Strong knowledge of REST APIs, GraphQL, WebSockets and microservices architecture.
• Commercial experience with AWS services (Lambda, Fargate, API Gateway, AppSync).
• Experience with SQL and NoSQL databases, messaging technologies and event-driven architectures.
• Familiarity with Terraform, Docker, CI/CD pipelines and automated testing.
• Understanding of software design patterns and the full SDLC.
• Experience working in Agile, cross-functional engineering teams.
• Strong communication and mentoring skills.
• Experience with C#/.NET 8 would be advantageous.
• Knowledge of financial markets or trading systems would be beneficial.

Responsibilities

• Design, develop, test and deploy software for a next-generation financial technology platform.
• Build scalable, reusable services using TypeScript, React and cloud technologies.
• Collaborate with cloud partners, architects and engineers to deliver high-quality solutions.
• Take ownership from design through production deployment.
• Develop and maintain cloud-native applications, microservices and event-driven systems.
• Contribute to architectural discussions and evolve systems toward target architecture.
• Drive engineering improvements and enforce best practices.
• Assist with estimation, planning and prioritisation for delivery.
• Maintain code quality through unit/integration/end-to-end testing.
• Mentor junior engineers and share knowledge across the team.
• Participate in production support to maintain stability of critical services.

Skills

TypeScript development

React/Redux/React Query

REST APIs/GraphQL/WebSockets

Mentoring juniors

Agile cross-functional teams

Communication & problem-solving

C#/.NET familiarity

Cloud architecture knowledge

Full stack development

Software design patterns & SDLC

Tools

Terraform

Docker

AWS (Lambda, Fargate, API Gateway, AppSync)

SQL/NoSQL databases

Job description

Vanrath is seeking a Senior Software Engineer (Full Stack) to join our Belfast team. You will design, develop and deploy a modern fintech platform using TypeScript, React and cloud-native technologies, working closely with cloud partners and senior engineers.

You will own features end-to-end, contribute to architecture, and mentor junior engineers in an agile, collaborative environment. This role offers hybrid working and exposure to large-scale distributed systems.