Senior Fullstack (Ruby On Rails/TypeScript/React) Engineer
Confirmed on the employer's own hiring board on Oct 31, 2026. First seen by Alion on Jan 24, 2026. Kake scores B on the Alion truth index.
Summary
We’re looking for a Senior Fullstack Engineer to help shape and scale a modern web experience for a fast-paced, consumer-facing product team. You’ll work closely with cross-functional stakeholders to deliver elegant, performant, and maintainable applications using TypeScript and React. This role is ideal for someone who possesses a high level of agency, a "doer" mentality, and the ability to maintain a full product vision while shipping high-quality code at speed.
Core Requirements:
- Mastery of TypeScript, React and Ruby on Rails for building complex, scalable web applications.
- 5+ years of professional experience in frontend development with a proven track record of shipping production-grade software.
- Demonstrated high level of agency and a proactive "doer" mentality, with the ability to hit the ground running and own features end-to-end.
- Demonstrated experience executing comprehensive website rebrandings and implementing new user flows from design-ready specifications.
- Proven ability to orchestrate complex backend payment flows and manage the long-tail technical work associated with data transfers.
- Strong understanding of API design and the integration of third-party payment processing systems.
- Experience ensuring high design-to-dev fidelity while migrating legacy components to a modern, rebranded UI.
- Strong product sense and the ability to build for the long term while balancing immediate delivery needs.
- Excellent understanding of modern frontend architecture, state management, and performance optimization.
- Solid experience with unit testing and a commitment to maintaining high code quality through thoughtful testing practices.
- Comfort navigating fast-paced environments and collaborating within cross-functional agile teams.
- Strong eye for design-to-dev fidelity and a passion for creating fluid, responsive user interfaces.
Nice to Have:
- Experience working with GraphQL APIs and modern data-fetching libraries.
- Familiarity with CI/CD pipelines and automated deployment workflows for web applications.
- Exposure to modern CSS-in-JS libraries or advanced styling frameworks.
- Prior experience in the Trading, Brokerage, or Wealth Management industries is a big plus.