Contract Lead JavaScript Developer

Contract Lead JavaScript Developer 📜 Outside IR35 💸 £500–£550p/d 🏡 Fully Remote (UK) ⏳ 12 Months Opus is partnered with an early‑stage start‑up embarking on a true 0→1 platform build. They’re looking for a Contract Lead JavaScript Developer to take ownership of the architecture, define the tech stack, and build a high‑performing engineering team from the ground up. This is a hands‑on technical leadership role where you’ll shape the platform, influence product direction, and be central to discovery through to delivery. If you thrive in ambiguity, enjoy greenfield builds, and want genuine ownership — this one’s for you 🚀 🔍 What You’ll Be Doing Leading a full 0–1 build for a start‑up platform Defining and owning the JavaScript-based tech stack Architecting a scalable, cloud‑native system Hands‑on development across frontend & backend Playing a key role in the discovery phase, shaping technical decisions Driving best practices around architecture, testing, and delivery Hiring and mentoring engineers + surrounding skillsets as the platform scales Working closely with founders, product, and stakeholders 🛠️ Tech You’ll Be Using (or Defining) React Next.js Node.js TypeScript AWS Terraform Modern CI/CD, testing, and cloud-native tooling(You’ll have autonomy to shape and evolve this stack.) ✅ Ideal Experience Senior / Lead JavaScript experience on greenfield builds Strong React + Node + TypeScript background Proven system architecture experience Comfortable operating in start‑up / fast‑moving environments Experience scaling teams or mentoring engineers Confident making technical decisions with long-term impact 📩 Apply or send your CV to (url removed)