Asad Mahmood A.

I build secure full-stack products and AI features for SaaS teams. Go and Next.js are my main tools, with PostgreSQL underneath and OpenAI or Gemini where it adds real value. Recent example: Resso.ai, an AI interview-practice platform I built end to end with Next.js, PostgreSQL, OpenAI/Azure OpenAI, realtime AI, Clerk organizations and roles, Stripe subscriptions, and CI/CD on Azure. What sets me apart is security. Most full-stack developers add auth at the end. I specialize in it: OAuth2, OIDC, SAML, JWT and enterprise SSO (Auth0, Okta, Clerk), plus role-based permissions and tenant isolation for multi-tenant SaaS. What I can take on: - Backend and APIs (Go, Node.js, REST, webhooks, Stripe billing) - Full-stack web apps and SaaS MVPs (Go, Next.js, React, TypeScript) - AI features and LLM integrations (OpenAI, Azure OpenAI, Gemini) - Authentication, SSO and access control - Cloud deployment and CI/CD (GCP, Azure, AWS, Docker) I've spent 7 years as a backend engineer and solution architect for startups and established teams, taking systems from the first architecture decisions through to production and scale. Built to hold up in production, not just in a demo. Tell me what you're building and I'll tell you how I'd approach it.