Freelance Applied Cryptography Programmer: AES-GCM, PBKDF2, JWE/JWS, pgcrypto & E-Signatures

Protecting user API keys in local-first web apps, encrypting healthcare PHI at rest in PostgreSQL, verifying Singpass JWE/JWS identity payloads, and signing OAuth 1.0a/2.0 requests require exact adherence to modern cryptographic standards.

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About the Author — Hire Freelance Programmer Aldian Fazrihady

Aldian Fazrihady is a Top-Rated Senior Freelance Programmer, Freelance Full Stack Developer, and AI Application Engineer with 15+ years of production software engineering experience and Google Cloud Professional Cloud Architect & Data Engineer certifications. He specializes in building custom LLM & autonomous AI agents, RAG pipelines, Next.js/React PWAs, Python (Django/FastAPI), Go microservices, and serverless cloud infrastructure on Google Cloud Run and AWS.

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