Senior Front‑End Developer (TypeScript/React)

We have an opportunity for someone to help build a modern SaaS decision‑support platform that empowers aquaculture producers to plan smarter and operate more sustainably. As a Senior Front‑End Developer, you’ll work closely with designers and customer success to deliver user‑friendly, robust experiences that put powerful models and data at customers’ fingertips.

📍 Location: Stockholm

🕒 Type: Full‑time (with a flexible remote work policy)

Responsibilities:

🚀 Be a core member of an autonomous, cross‑functional team that owns problems end‑to‑end

🧭 Help shape the culture, practices, and methodology of a growing product organization

⚛️ Build applications with TypeScript, React, and Material UI/JSS

🧪 Maintain high architectural fitness and delivery speed using TDD and CI/CD

🔗 Collaborate to expose advanced mathematical models via REST APIs, making them intuitive for users

Requirements:

👩 💻 Front‑end delivery: Strong experience shipping SPAs with React + TypeScript

🧱 Foundations: Semantic HTML5, CSS3/SCSS, Flexbox/Grid, responsive design, cross‑browser compatibility

⚛️ React ecosystem: Hooks, context, performance optimization (memoization, code‑splitting)

🧠 State & data: React Query (or similar), familiarity with Redux/Zustand/Recoil

🎨 Design systems: Material UI theming, design tokens; Storybook for components

♿ Accessibility: WCAG 2.1 AA practices, keyboard navigation, screen‑reader support

🧪 Testing: Unit/integration with Jest + React Testing Library; e2e with Cypress or Playwright; TDD mindset

🔗 APIs: Comfortable with REST, OpenAPI/Swagger; robust error handling and retries

🧰 Tooling: Git, npm/pnpm, Vite/Webpack; ESLint/Prettier for a consistent codebase

🚀 CI/CD: Experience with pipelines (e.g., GitHub Actions/Azure DevOps); feature flags and gradual rollout

📈 Performance & UX: Lighthouse/Web Vitals, lazy loading, bundle analysis, profiling

🔒 Security: Front‑end OWASP basics, OAuth/OIDC flows, secure storage of tokens and secrets

🔍 Observability: Client‑side logging/metrics, Sentry (or similar), basic analytics instrumentation

🧭 Product mindset: Customer empathy, discovery with designers/CS, comfort with ambiguity

🤝 Collaboration: Code reviews, pairing, mentoring; clear written and async communication

Package:

📈 Equity opportunity

💰 Competitive salary and a strong insurance scheme

🧰 Access to best‑in‑class tools to do your best work

🏡 Flexible remote work policy

🧹 Zero bureaucracy (clear ownership and fast decisions)

🧭 A chance to shape the product and company in its early days

🚀 A start‑up environment with strong financial backing, where your impact is visible

🤝 A team mindset (they win and lose together)

🧠 Technical founder‑led management and mentorship