Senior Frontend Developer

About the RoleThis is an early-stage startup building a product. This role is critical for owning the entire frontend, shipping polished, intuitive, and high-performance interfaces for a complex application. The hire will be a foundational member of the team, expected to make significant product and design decisions independently.This role requires authorization to work in the United States and must be performed onsite 5 day a weekResponsibilitiesYou'll own the frontend of our core product shipping interfaces that feel instant, intuitive, and polished even when the underlying work is complex.This is not a role where you wait for designs to land in your queue.You'll make product and design calls yourself, prototype quickly, and execute without perfect specs.Sometimes you'll implement designs. Other times you'll create them.The expectation is craft not just working code, but software that feels good.Loading states, empty states, error messages, keyboard shortcuts, and the thousand small decisions that separate a polished product from a functional one.Qualifications4+ years of frontend engineering experience with a portfolio of complex web apps you've shipped not side projects, but production systems real users depend on.Deep React fluency You love React and deeply understand state management when to use Memo, how callbacks work, the component lifecycle, and how to write beautiful, reusable components.You recognise prop drilling before it becomes a problem and know when to lift into context or Zustand instead.Full-stack comfortable owning a feature end to end DB migration, backend route, frontend fetch, and UI. You don't need a separate engineer for each layer.Performance instinct You know when to cache, when to refetch stale data, and how to optimistically update the UI.You notice duplicated network requests and care about the app feeling snappy.Product sense and design intuition Able to take a rough product direction, sketch an interaction, and ship something that feels right without waiting for a designer to hand you a finished spec.High autonomy, low ego. You ship, gather feedback, and iterate. You don't wait for permission. You unblock yourself.Required SkillsBonus Experience with multiplayer apps (Y.js, Automerge, CRDTs).Building interfaces for LLM-based tools "” streaming responses, handling uncertainty, progressive disclosure.Local-first architectures (IndexedDB, service workers, sync strategies).Design background or strong visual sense.Previously a founding frontend engineer who established standards from scratch.Experience with OpenClaw (code bot).Usage of conductor.build: processes for using AI/LLMs in professional engineering.Can describe their AI coding setup to become "hyperengineer".Will give 24-hour task to candidates who haven't tried these tools.Looking for candidates who work late and 6 days per week in office.Preferred SkillsExperience with multiplayer/real-time collaboration frameworks (Y.js, CRDTs).Experience building interfaces for LLM-based tools.Experience with local-first architectures (IndexedDB, service workers).A formal design background or a strong, demonstrable visual sense.Previous experience as a founding frontend engineer.Pay range and compensation packageSalary very attractive depending on the experience.Equity Meaningful early-stage equity.Health and dental Comprehensive health and dental coverage.401(k) 401(k) included.Time off Considerable PTO.Perks Gym budget and daily lunch.Equal Opportunity StatementExceptional candidates go from first touch to offer within 2 weeks.

Created: 2026-05-13