{"@context":"https://schema.org","@type":"JobPosting","directApply":"https://schema.org/False","title":"Frontend Engineer — Next.js + Vercel (Contract)","description":"

Stack: Next.js (App Router & API routes), TypeScript, Vercel, Supabase (Postgres/Auth/Storage), LangGraph, Python (FastAPI), AWS

The mission

Own the end-to-end web experience in a modern Next.js codebase—shipping fast, accessible interfaces that integrate with Supabase and stream data from LangGraph workflows.

What you’ll work on

Build features with Next.js App Router, Server Components/Actions, and API routes.
Implement auth/session flows with Supabase (RLS-aware UI, storage, realtime).
Ship streaming UX (SSE/WebSockets) for LangGraph-backed agents with graceful retries and optimistic updates.
Improve Core Web Vitals (LCP/CLS/INP) via caching, prefetching, image/edge optimization on Vercel.
Create accessible, reusable UI primitives and docs (Storybook optional).
Own error/empty/loading states, analytics/telemetry, and production monitoring (Sentry/OTel).
Keep quality tight: tests (RTL/Playwright), types, linting, and CI.

What you bring

3+ years React/TypeScript; ≥1 year with Next.js App Router.
Strong SSR/SSG/ISR instincts, caching & data-fetch patterns.
Supabase experience (Auth, Postgres schemas, RLS-aware clients).
Real-world performance tuning and a11y fundamentals (WCAG, semantic HTML).
Comfortable with Vercel, preview deploys, env/secrets, Git-based CI.
Nice to have: Tailwind/CSS-in-JS, Storybook/design systems; realtime (Postgres changes/WebSockets/SSE); LangGraph/LangChain; Sentry/OTel; feature flags/experimentation; basic Python/FastAPI.

90-day outcomes

Ship 2–3 user-facing features with measurable Core Web Vitals gains.
Establish component patterns + critical-path test coverage (≈80%).
Deliver one streaming/agent UI that handles partial/async results elegantly.

How we set you up to win

Assess → Accept: Transparent scope, outcomes above, and fast feedback.
Affirm: Clear offer details and start plan—no surprises.
Activate/Acclimate: Day-one access, a dedicated buddy, weekly 1:1s, and a “first-week win.”
Accomplish/Adopt: Regular demos, recognition for shipped impact, and a simple path to extend the contract based on outcomes.

Tools

Next.js, TypeScript, Supabase JS, Playwright/RTL, ESLint/Prettier, Vercel, Sentry, OpenTelemetry, Storybook (optional), GitHub Actions.

If you want, I can tailor this further (e.g., add a comp range, application steps, or your company voice) without making it longer.

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