Senior Software Engineer, Frontend

About InstaSwitch

InstaSwitch is the fastest way for banks and fintech platforms to activate new accounts, driving deposits and primary relationships. Businesses hesitate to switch accounts due to time and complexity, leading to lost primacy. InstaSwitch automates switching, seamlessly moving income sources, payroll, and spend with minimal effort.

Why This Role?

We're looking for a senior engineer with deep frontend expertise to own our client-facing TypeScript stack. You'll be the first dedicated frontend hire on a small, senior engineering team.

You’ll build, maintain, and set engineering standards for our frontend and client SDK built on Lit 3 and web components as we scale: versioning, distribution, testing, isolation, and establishing patterns and architecture for the team.

In practice, you’ll be full stack - contributing to our API, working on other services, and collaborating across the stack - but your primary ownership is the frontend and SDK.

What You’ll Do

• Own our TypeScript/Lit frontend: architecture, patterns, and day-to-day development
• Own our embedded client SDK: versioning, distribution, customer-facing API design
• Contribute to our Rails backend
• Rapidly prototype, test, ship, and iterate on new features
• Contribute to technical strategy and engineering culture as part of a small, tight-knit team

What We’re Looking For

• 6+ years of experience in full-stack development
• Strong TypeScript proficiency
• Deep experience with web components or Lit; strong React or Next.js experience is welcome but web components depth is what we're hiring for
• Demonstrated experience building and distributing frontend SDKs, including versioning, lifecycle management, and isolation in third-party contexts
• Comfortable working across the stack in a small team environment
• Security-first approach to development
• Self-directed and effective in ambiguous, fast-moving environments

Nice to Have

• Experience building or maintaining browser extensions (Chrome, Firefox, or Safari)
• Experience with Ruby on Rails
• Web automation expertise (Puppeteer, Selenium, AI-driven automation, etc.)
• Fintech or banking API experience

Why InstaSwitch

We're a growing team solving a meaningful problem that hasn't been cracked yet. You'll work directly with the founding team, have real ownership over a critical part of the product, and help shape how we build as we grow. If you want a role where your technical decisions matter and your work ships to real customers, this is it.