YASIN-KHAN@PORTFOLIO:~$

# whoami

Yasin
Khan.

> // Product Engineer

$ cat ~/about.txt

Senior Full-Stack Engineer with 5+ years of experience turning high-level product ideas into production-ready platforms. Combines product thinking with expertise across React, TypeScript, Node.js, Python, PostgreSQL, cloud infrastructure, and security to rapidly deliver scalable systems with measurable business impact. Proven history of owning products end-to-end in fast-paced startup environments.

$ ls ~/cta/

▸ VIEW PROJECTS ✉ CONTACT

guest@terminalinteractive · v1.0

guest@terminal:~$

STATUS● ONLINE

loc: Dhaka, BD · UTC+6

role: open to remote

last_commit: 2h ago

HERO SCROLL↓

02 / EXPERIENCE — `git log --author=yasin`~/work

WORK
HISTORY.

$ git log --pretty=full --since=2021

commit bet-art1Feb 2026 → Jul 2026· Larnaca, Cypress · remoteHEAD → main

Betarchitect· Senior Full Stack and Security Engineer

+ Led the design, development, and maintenance of a Back Office CRM portal built with Payload CMS for content and multi-tenant management.
+ Architected a secure, company-hosted cloud development platform using GitHub Enterprise, Coder, Infisical, and Tailscale, providing developers with remote workspaces, centralized source control, secure secrets management, and private network connectivity.
+ Hardened PostgreSQL security by redesigning financial tables as append-only ledgers and enforcing immutable audit trails through Row-Level Security (RLS) and database policies.
+ Implemented mTLS and ACL-based authorization for Redpanda and consuming services, preventing unauthorized access and ensuring each service could only publish or consume its designated data.
+ Designed and implemented a secure KYC/KYB document viewing solution leveraging client-side encryption and Canvas-based rendering to protect sensitive customer data.

ReactTypeScriptNestjsPostgreSQLRedpandaPayloadCMSHetzner

commit f10qer1Oct 2024 → Oct 2025· Halifax - Canada · remote

Floqer· Senior Full Stack Engineer

+ Redesigned the data layer (partitioning, indexing strategy, and read/write replicas), reducing query latency from 52s to 0.96s (~98% improvement) while maintaining 100% availability.
+ Built a real-time AG Grid data table by implementing end-to-end WebSocket updates (server and client), eliminating polling and manual refreshes while scaling to support 2,000 concurrent connections and 1M events/minute with smooth UI performance.
+ Architected and developed a React Flow based workflow builder with robust state management, transactional undo/redo, and support for split-path and conditional flows, ensuring consistent behavior and responsive performance at scale.
+ Improved API performance and reliability by optimizing Fastify services, Redis caching, Idempotency and database functions, reducing p95 response time from 30s -> 1s and lowering error rate by 50%.
+ Led end-to-end delivery of high-impact features (backend + frontend), owning design, implementation, and rollout — integrated 36 third-party services, shipped 62 production releases.

ReactTypeScriptFastifyNode.jsPostgreSQLMongoDBRedisWebSocketsGCP

commit bildnwOct 2022 → Oct 2024· Riyadh, Saudi Arabia · remote

Buildnow· Senior Frontend Engineer

+ Owned frontend development across multiple portals (Client, Admin, Supplier), leading implementation from requirements → release.
+ Built a Auction platform end-to-end (frontend + backend), delivering a workflow where clients create material requests (quantity/specs), vendors receive notifications and place bids, and contracts are automatically awarded to the lowest eligible bid after a timed window.
+ Designed and implemented complex forms, reusable custom components, and advanced validation logic to create an intuitive and seamless customer onboarding experience.
+ Delivered a fully localized and accessible UI for English/Arabic (RTL/LTR), improving usability and reducing localization bugs/support tickets.
+ Partnered with operations during live incidents and hotfixes, troubleshooting production issues and reducing MTTR from significantly via rapid diagnosis, safe patch releases, and post-incident fixes.

ReactTypeScripti18nPythonFastAPI

commit gorila-moveJul 2022 → Nov 2022· Dhaka, Bangladesh

Gorillamove· Software Engineer

+ Shipped customer/driver mobile features and internal admin tooling using React Native + React/TypeScript, delivering production ready releases on tight timelines in a high-operations environment.
+ Built a real-time driver order notification system (server → mobile), increasing acceptance rate by 15% through reliable delivery, deduplication, and clear UX states.
+ Developed an inventory management module in the admin portal enabling internal teams to track stock levels and create replenishment requests, reducing manual tracking and cutting processing time.
+ Improved the mobile preference/settings experience (React Native), increasing usability and reducing related support issues.

React NativeReactTypeScriptGo

commit me@lfullJun 2021 → Aug 2022· Halifax, Canada · remote

Mealful· Full Stack Engineer

+ Built and shipped three production web apps—Customer Portal, Admin Portal, and Driver Portal covering the end-to-end ordering and delivery lifecycle (ordering, dispatch/ops workflows, driver execution) using React/TypeScript on the frontend and PHP/PostgreSQL on the backend.
+ Designed and implemented backend APIs and database schema in PostgreSQL, focusing on data integrity and performance, supporting daily operational workloads with predictable response times (p95: 900ms).
+ Implemented operationally critical workflows such as dispatching, driver assignment, real-time order status tracking, and role-based access controls (RBAC), reducing manual ops effort by 75% / speeding up dispatch by 50%.
+ Led DevOps and production ownership by managing AWS environments and automating CI/CD pipelines with GitHub Actions and Jenkins, increasing deployment frequency from Development to Production and improving reliability to 99% uptime.
+ Improved delivery quality by introducing/strengthening engineering practices (code reviews, release process, rollback plans, monitoring), reducing production issues by 80% and cutting MTTR from 3 days → 1 day.

ReactTypeScriptPHPPostgreSQLAWSGitHub ActionsJenkins

↳ 5 ROLES · 5 YRS · OPEN TO REMOTE03 PROJECTS→

03 / PROJECTS — `ls -la ~/work/featured`~/projects

SELECTED WORK.

01/05

№01

● SHIPPED

SaaS · b2c · 2026

Visitly

Visitly is an embeddable website widget that lets visitors start a live 1:1 video call with a host in one click.

WHY I BUILT IT

I built Visitly to help founders connect with website visitors instantly, without forms, scheduling links, or long wait times.

HOW IT WORKS

Visitors click the widget and join a live queue. The host receives a browser notification, answers the request, and both connect through a video call.

WHAT I LEARNED

I learned how to build embeddable widgets, manage real-time queues, and create browser-based video calls.

Dashboard ↗Client ↗Homepage ↗

↳ 1 SELECTED PROJECTS04 SKILLS→

04 / SKILLS — TECH STACK + LIVE PROFILES~/skills

THE STACK.

$ tree ~/stack --depth=2

stack/
├── frontend/
│   ├── React · Next.js · TypeScript · Vite
│   ├── Tailwind CSS · shadcn/ui · Radix UI · Framer Motion
│   ├── TanStack Query · Redux Toolkit · Zod · React Hook Form
│   └── AG Grid · React Flow · Storybook
├── backend/
│   ├── Node.js · Fastify · NestJS
│   ├── Python · FastAPI · Django
│   ├── Go · PHP · Payload CMS
│   └── REST · OpenAPI · GraphQL · tRPC
├── security/
│   ├── OAuth 2.0 · OpenID Connect · JWT · Auth.js
│   ├── Infisical · Tailscale · mTLS
│   └── RBAC · PostgreSQL RLS
├── mobile/
│   └── React Native · Expo · Ionic
├── database/
│   ├── PostgreSQL · MongoDB · Redis
│   ├── Prisma · Drizzle ORM · SQLAlchemy
│   └── Supabase · pgvector
├── observability/
│   ├── Prometheus · Grafana · Loki
│   ├── OpenTelemetry · Sentry · Bugsink
│   └── Flagsmith
├── cloud and devops/
│   ├── AWS · GCP · Hetzner · DigitalOcean
│   ├── Docker · Kubernetes · Terraform · Ansible
│   ├── GitHub Actions · Jenkins · Nginx
│   └── Portainer · Dokploy
└── realtime and messaging/
    ├── WebSockets · Redpanda · Kafka
    └── BullMQ · Redis Pub/Sub

↳ only what I can defend in an interview.

$ curl -s api.profiles/me | jq

GITHUB · @hound6653 WK