Senior Frontend Engineer

SiftHub is an Agentic Platform for Deal Orchestration. We deploy agents to automate sales collateral, deal briefs, RFPs, and post-meeting follow-ups; unblocking deals for sales and solutions teams.SiftHub collates and sifts through your ecosystem (Drive, Gong, CRM, Slack, and more) to identify and convert real-time deal signals into tailored content and ready-to-execute actions. Designed to replicate how top-performing reps execute deals. Trusted by revenue teams at Saviynt, Allego, Superhuman, Sirion and more.

Why This Role Exists
SiftHub reaches users across multiple surfaces: a web app, a Chrome extension that surfaces AI intelligence mid-call and mid-workflow, a Microsoft Office add-in, and a Google Sheets add-on. The frontend experience is the product. We need a senior engineer who can own it across all of these: architecture, performance, and the bar enterprise users will hold us to.

What You’ll Own

• The Chrome extension, Office add-in, Sheets add-on, and React/TypeScript web app: architecture, performance, reliability, and cross-surface consistency


• Component systems and design token infrastructure the team builds on


• Frontend performance: load times, rendering, memory, and extension lifecycle


• Integrating AI outputs into clean, responsive UIs, working closely with NLP and backend engineers


• The frontend quality bar: code reviews, patterns, and technical standards

Must-have

• 4+ years of production experience with React and TypeScript


• Strong command of the modern frontend stack: state management (Redux, Zustand, or similar), Webpack or Vite, and testing with Jest/Vitest, React Testing Library, or Playwright


• Deep experience with at least one non-web surface (browser extensions, Office add-ins, or Google Workspace add-ins), including its platform constraints, lifecycle, and edge cases


• Strong opinions on component design and state management, with the ability to reason about trade-offs, not just implement


• Hands-on performance profiling and optimization in production


• Writes tests as part of development, not as an afterthought


• Builds clean, accessible, maintainable interfaces and can clearly articulate design decisions

Good to have

• Chrome extension internals: content scripts, service workers, and messaging patterns


• Office.js or Google Sheets API experience


• AWS and CI/CD (e.g. GitHub Actions)


• B2B SaaS experience and a feel for enterprise UI expectations


• Exposure to AI or LLM-powered product surfaces, especially streaming output

Who You Are

• You care about the last 5%: micro-interactions, edge cases, and polish


• You push back on UX decisions when something feels off, and have the design intuition to back it up


• You’re energised by early-stage ambiguity and can build a path where there isn’t one


• You communicate clearly with designers, PMs, and backend engineers

What We Offer

• Hard UX problems: making AI output feel fast and trustworthy inside the tools people already use


• Direct access to the founder


• Competitive salary plus ESOPs


• Best-in-class dev tools and AI assistants


• Health insurance


• In-office in Mumbai, 5 days a week. We value building together in person.