What are the responsibilities and job description for the Frontend Software Engineer position at Reason?
Frontend Software Engineer
Location: New York City (Onsite)
Salary: $160K–$180K
Equity: competitive
Must haves: CS degree / experience at a company with a high bar for engineering and product, early stage work is a big plus / built and shipped production features with Angular/React/Vue (they use Angular)
Why Join
The client are at a rare and exciting phase: strong traction, real enterprise adoption, and still an extremely small team. The product has taken off quickly — hitting seven-figure ARR within the first year, signing multi-hundred-thousand-dollar annual contracts with major financial institutions, and replacing several outdated systems at once.
You’d join as roughly the 10th or 11th employee — early enough to have meaningful ownership and influence on architecture, culture, and product direction, but with the confidence that comes from clear product-market fit. Every feature you ship will be used by some of the biggest players in modern finance.
About
A fintech building connected, real-time software infrastructure for institutional finance — replacing slow, fragmented workflows with intelligent, data-driven systems. The platform enables banks, investors, and issuers to coordinate seamlessly, improving accuracy, speed, and transparency across the lifecycle of financial transactions.
Headquartered in NYC, operate in a high-ownership culture, and move fast while staying deeply focused on product quality.
The Role
They're looking for a frontend-leaning engineer who loves working close to product and wants to influence the foundations of a modern platform. You’ll help shape both the architecture and the engineering culture as they scale.
What You’ll Do
- Build scalable UI architecture in a modern Angular environment
- Implement advanced state management patterns using signals and RxJS
- Develop reusable components and maintain consistency across the design system
- Work with large datasets and design efficient data-fetching flows
- Contribute to API design and ship backend endpoints as needed
- Introduce new patterns, tools, and engineering best practices
- Build features across a multi-product suite — CRM, messaging tools, event workflows, reporting, and more
- Create UI for AI-powered features, automated workflows, and intelligent recommendations
- Optimise performance as data volume increases with each new enterprise client
- Work closely with product, design, and domain experts in a fast-moving environment
Salary : $160,000 - $180,000