Microsoft C# Specialist

Drop-in authentication for a social app: email + password register/login, short-lived JWT access tokens with rotating refresh tokens, email OTP verification, and password reset. Ships with bcrypt hashing, a Passport JWT strategy, an @CurrentUser() decorator, and a ready-to-use JwtAuthGuard. Wire it into any NestJS + Prisma backend in minutes and stop rebuilding auth for every project.

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Auth & Accounts Kit (NestJS + Prisma + JWT)

The timeline engine for your social app. Create text + media posts, extract and index #hashtags, and serve a cursor-paginated home feed built from the accounts a user follows (fan-out-on-read). Includes per-profile feeds, hashtag feeds, reply threading, soft delete, and stable keyset pagination that doesn't skip or duplicate posts as new ones arrive.

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Posts & News Feed API (NestJS + Prisma)

Every engagement primitive a social feed needs, done right. Idempotent like/unlike with race-safe toggling, threaded comments with reply counts, reposts and quote-posts, and bookmarks — each returning fresh counts your UI can trust. Emits domain events so the Real-time Notifications gig can ping users the moment they're liked, replied to, or reposted.

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Likes, Comments & Reposts (NestJS + Prisma)

One-to-one real-time chat, the kind users expect from a modern social app. Get-or-create conversations, persisted message history with cursor pagination, live delivery over Socket.IO, typing indicators, delivery + read receipts, unread-per-conversation counts, and online presence. Messages persist first so they're never lost, then stream to connected participants.

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Direct Messaging / Chat (NestJS + Socket.IO)

Live notifications that feel instant. A Socket.IO gateway puts every user in their own private room, a service persists and pushes notifications (like, comment, follow, repost, mention), and an event listener wires it all to your engagement layer with zero coupling. Ships unread-count badges, mark-one/mark-all-read, JWT-authenticated sockets, and graceful offline delivery — the notification is stored whether or not the user is online.

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Real-time Notifications (NestJS + Socket.IO)

The media backbone for posts, avatars, covers, and chat attachments. Direct-to-S3 uploads via presigned URLs (keep large files off your API), server-side image processing with sharp (auto-orient, strip EXIF, resize to web/thumbnail variants, convert to WebP), MIME/type + size validation, and a clean key convention you store in your DB. Returns stable keys plus short-lived signed download URLs.

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Media Upload Service (NestJS + AWS S3 + sharp)

React based calendary library with momentjs support

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Genius Calendar

The frontend that ties a social app together. An infinite-scroll feed with IntersectionObserver, a post composer with media + character counter, a fully wired post card (like/comment/repost with optimistic updates and rollback), a follow button, a live notification bell over Socket.IO, and a threaded comment view. Typed hooks over React Query talk to the Posts, Engagement, Follow, and Notification APIs from the companion gigs — drop it in and you have a working timeline.

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Social Feed UI Kit (Next.js + React + Tailwind + React Query)

The social graph every network is built on. Editable profiles (bio, avatar, cover, location, links), follow/unfollow with self-follow and duplicate protection, follower/following lists with cursor pagination, live follower counts, and a 'who to follow' suggestion query powered by friends-of-friends. Clean NestJS services over a single Prisma Follow join table.

Saad Hasnain Khan

Professional Summary

Work Experience

Cofounder - Devmarketplace

Education

Masters in Computer Science

Bachelors in Computer Engineering

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Devmarketplace Profile

Saad Hasnain Khan

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