Sr. Software Engineer Frontend

About the role

Togetherwork is seeking a Frontend Engineer to incrementally modernize the user interfaces of 20+ SaaS products across a polyglot stack while keeping everything running for customers. You will work from Figma designs, leverage AI coding tools to accelerate implementation, and own the full journey from design handoff to backend integration.

Responsibilities

• Legacy UI Modernization - Incrementally replace server-rendered UIs with modern React components without breaking what is currently running. Scope modernization work into small shippable increments that are safe to deploy.
• Figma to Production - Take Figma designs from handoff to production-ready React components using AI tools to accelerate code generation, then apply the judgment to validate, refine, and ship.
• Backend Integration - Identify when a legacy server-rendered product needs API decoupling before the frontend can be modernized, and work with backend engineers to solve that problem.
• AI-Augmented Development - Use AI models as active tools in your daily workflow, accelerating Figma-to-code implementation. Evaluate AI output critically and know when to accept, refine, or rewrite.
• Quality and Stability - Implement feature flags for UI changes so rollback is always possible. Write unit and visual regression tests to catch when modernized components affect surrounding legacy UI. Own performance benchmarking before and after modernization to demonstrate measurable improvement.
• Cross-Functional Collaboration - Work directly with designers on Figma handoff, product managers on scope and priority, and backend engineers on API contracts. Communicate modernization trade-offs clearly.

Requirements

• 5+ years of experience as a frontend engineer
• Strong proficiency in React, TypeScript, JavaScript, and CSS
• Hands-on experience modernizing at least one server-rendered legacy stack: PHP, Ruby on Rails, or .NET
• Demonstrated use of AI coding tools to ship production frontend code
• Figma handoff experience
• Backend integration experience with understanding of API decoupling requirements
• Proven frontend testing proficiency
• Experience with feature flagging for safe incremental UI rollout

Preferred Qualifications

• Experience across multiple products or a platform engineering team simultaneously
• Accessibility awareness (WCAG compliance) especially when modernizing legacy UI
• Component library experience