Full-Stack Developer (React + Supabase)Advertising Specialist

AuthKeeper is a zero-knowledge authentication vault designed for modern security and privacy. We offer encrypted storage for TOTP secrets, passwords, secure notes, and credit card data powered by client-side encryption, real-time sync via Supabase, and robust row-level security. Our mission is to create a product where data sovereignty and usability coexist.

Whether you're a developer, privacy advocate, or security-conscious individual, AuthKeeper delivers military-grade protection with zero-trust architecture ensuring your data remains private, even from us.

We're hiring a Full-Stack Developer with strong experience in React, Supabase, and security-aware frontend/backend development. You'll play a central role in maintaining and scaling our secure vault infrastructure, building user-centric features, and strengthening client-side cryptography and secure storage workflows.

This is a hands-on role with high-impact responsibilities and direct influence over a security-first product.

• Design and develop secure features across the full stack (e.g., vault UI, TOTP, secure notes, password manager)
• Write scalable, privacy-preserving code using React, TailwindCSS, Supabase, and Netlify Functions
• Implement cryptographic workflows using Web Crypto API and AES-256-GCM
• Enforce strict Row Level Security in Supabase and manage PostgreSQL access policies
• Integrate secure session handling and auto-lock mechanisms for sensitive vault data
• Harden frontend components with strong CSP headers, input validation, and memory-safe design
• Collaborate with security engineers to address threat models and implement mitigation strategies
• Continuously audit and improve encryption practices to maintain zero-knowledge guarantees
• Contribute to a secure CI/CD pipeline with static analysis, secrets detection, and code linting

• Strong hands-on experience with React, TypeScript/JavaScript, and Tailwind CSS
• Deep understanding of Supabase, particularly authentication, RLS, and real-time sync
• Familiarity with Netlify Functions or similar serverless environments
• Experience with client-side encryption, browser-based crypto (Web Crypto API), and secure session design
• Solid knowledge of zero-knowledge architecture, memory handling, and local key derivation (PBKDF2)
• Understanding of web security principles: XSS, CSRF, CSP, HTTPS, HSTS
• Git, CI/CD workflows, and clean modular architecture
• Proactive mindset with attention to security implications in every layer

• Experience building or contributing to password managers, encrypted storage apps, or MFA tools
• Familiarity with OAuth2, TOTP generation, or browser extension security models
• Experience implementing Progressive Web Apps (PWAs) or offline-first apps
• Understanding of SSR (e.g., Next.js), advanced security headers, and anti-fingerprinting techniques

• Help build a product that prioritizes privacy, encryption, and user control
• Work independently with high ownership over core systems
• Collaborate with a mission-driven team on a modern stack
• Gain exposure to advanced cryptography, privacy tech, and real-world threat modeling
• Make an impact in a space where security is not an afterthought it's the foundation

Send your GitHub, portfolio (or projects), and a short paragraph about why this mission excites you to:

• [Confidential Information]