Senior TypeScript Engineer Belfast | 3 Days Onsite
At a Glance
- Senior-level full stack, frontend, or backend TypeScript engineer (5+ years)
- React, Node.js, AWS serverless stack
- 3 days onsite in Belfast
- Building the unified platform that powers a major global financial institution's core broker revenue
Who You'll Work For
One of the world's largest financial market infrastructure businesses, this group is the leading interdealer broker globally by revenue and the number one Energy & Commodities broker in the world. Operating across 60+ offices in 27 countries with over 5,300 people, they're at the forefront of how global financial markets connect, price, and trade.
What You'll Be Doing
The Fusion Platform is one of this organisation's most strategically important applications a major revenue-generating system consolidating multiple broker applications into a single, unified platform. This is a new team role and the team is open to strong full stack TypeScript engineers as well as frontend or backend specialists who have solid exposure across both layers. Built in direct partnership with AWS, this is a genuinely greenfield engineering challenge: modern architecture, a highly technical (and deliberately lean) team, and full ownership from design through to production on a platform used 24/5 by trading desks globally. Due to the complexity of the work and the collaborative nature of the team, 3 days onsite in Belfast is required.
Your Impact
- Drive engineering improvements and communicate the principles behind your decisions to the broader team
- Champion a well-defined SDLC, supporting planning, prioritisation, and delivery across the team
- Lead estimation conversations by challenging requirements, drawing on experience, and fostering solutions
- Shape system architecture discussions and help evolve services toward target-state design through refactoring
- Take end-to-end ownership of features design, development, testing, and production deployment
- Collaborate closely with Principal Engineers, Architects, and Leads to ensure successful releases
- Support and mentor junior engineers, fostering a culture of continuous improvement
What We're Looking For
Essential
- 5+ years of professional engineering experience in TypeScript (full stack, frontend, or backend)
- Front-end: proficient in React, Redux, React Query, HTML5, CSS3, and Tailwind
- Back-end: strong TypeScript (and/or C#/Java), RESTful APIs, GraphQL, WebSockets
- Solid database knowledge across SQL and NoSQL
- Experience with AWS services (Lambda, Fargate, API Gateway, AppSync) and Terraform
- Microservices architecture and containerisation experience
- Pub/Sub and messaging patterns (e.g. SOLACE/AMQP)
- CI/CD in enterprise environments; automated unit, integration, and e2e testing
- Agile delivery team experience with tools like JIRA
- Able to commit to 3 days onsite in Belfast
Desirable
- OOP/SOLID principles and demonstrable C# (.NET 8+) experience
- Contribution to open-source projects
- Knowledge of financial markets or OTC products
What's In It For You
- Up to £60,000 base salary
- Hybrid working 3 days onsite in Belfast
- Work directly alongside AWS engineers on a flagship platform build
- Highly technical, small-team environment with genuine ownership and scope
- Inclusive culture with active employee networks and development pathways
- Greenfield platform build something new, not maintain something old
Interested?
If you're interested or have any further questions on the role, please feel free to reach out to Eve Geddis directly on LinkedIn.
Skills:
Typescript React AWS Serverless CICD Microservices Full Stack
Benefits:
Pension Fund Medical Aid / Health Care
WHJS1_NI