Middle Strong Full-Stack Developer (Next.js / Node.js / Supabase), Lviv, Wroclaw,

Responsibilities

• Full-Stack Feature Development: Design, develop, and deploy new end-to-end features, covering both front-end user interfaces (Next.js) and back-end logic (Node.js/Supabase)
• Database Architecture & Security Management: Design relational database schemas in PostgreSQL, write optimized SQL queries, and configure Row Level Security (RLS) policies within Supabase to ensure data isolation and security
• API Design & Integration: Build and maintain secure, scalable RESTful/GraphQL APIs and Server Actions; integrate third-party APIs (payment gateways, analytics, CRM, etc.)
• Performance Optimization: Optimize application performance, including rendering paths, load times, bundle sizes, Core Web Vitals, and database query execution
• Code Quality & System Maintenance: Perform regular code reviews, refactor legacy-prone modules, write automated tests, and ensure strict TypeScript typing across the entire application to minimize production bugs
• Deployment & CI/CD Support: Support and maintain deployment pipelines and environment configurations (Vercel, GitHub Actions, Docker)

Requirements

• 4+ years of professional software development experience as a Full-Stack Developer
• Next.js Expertise: Deep understanding of React and Next.js core concepts (Server Components, Client Components, SSR, SSG, ISR, Server Actions, and Routing)
• Node.js Proficiency: Solid backend development experience using Node.js
• Database & Supabase Knowledge: Practical experience with PostgreSQL, writing complex SQL queries, and working with Supabase infrastructure (Auth, Storage, Edge Functions, and DB triggers)
• TypeScript Mastery: Exceptional TypeScript skills with a strong focus on strict typing and sharing types between client and server
• Markup & Layout: Strong UI/UX implementation skills utilizing HTML5, CSS3, and Tailwind CSS with a mobile-first responsive approach
• Version Control: Advanced proficiency with Git (Git-flow) and modern development workflows
• Cloud & Infrastructure (Azure)
• At least Upper-Intermediate level of English
• Core Frontend: Next.js (App Router), React, TypeScript
• Core Backend & Database: Node.js, Supabase (PostgreSQL, Row Level Security, Edge Functions)
• Styling: Tailwind CSS
• State Management & Fetching: React Query (TanStack Query) / SWR, Zustand
• ORM & DB Tools: Prisma / Drizzle ORM
• Validation & Forms: Zod, React Hook Form
• Authentication: Supabase Auth / Next-Auth (Auth.js)