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Toufiqur Rahman Tamkin

Senior Software Engineer & Backend Architect

tamkin22rahman@gmail.com admin@vertoone.com +8801894700564 Rajshahi, Bangladesh · Remote-First toufiqur-rahman-tamkin.vertoone.com
GitHub: ToufiqurRahmanTamkinLinkedIn: in/toufiqur-rahman-tamkinGitLab: tamkin22rahman

Summary

I'm a Senior Software Engineer and the Founder of Vertoone, a software product studio building high-performance digital systems, AI-powered automation and cloud-native SaaS products. With 4+ years of production battle-testing, I design architectures that aren't just functional - they're durable. I've shipped distributed microservices, real-time event pipelines, latency-sensitive APIs, multi-tenant SaaS platforms and AI automation tools from concept through production.

Technical Skills

Core Backend
Node.js, NestJS, Express.js, TypeScript, GraphQL, REST APIs, gRPC, Python, Microservices, WebSockets, WebRTC
Data & Messaging
MongoDB, PostgreSQL, MySQL, Redis, Prisma, Mongoose, Apache Kafka, RabbitMQ, Elasticsearch, BullMQ
AI, LLMs & RAG
OpenAI, Anthropic Claude, Google Gemini, LangChain, RAG Pipelines, Pinecone / pgvector, Whisper STT, ElevenLabs TTS, Ollama, LM Studio
Workflow & Business Automation
n8n, Zapier, React Flow, BullMQ, Agenda.js, Webhook Orchestration, Drip Campaigns, Event-Driven Triggers, Multi-Channel Campaigns
Frontend & Mobile
React.js, Next.js, React Native, Expo, React Flow, Redux, React Hooks, Tailwind CSS, Material-UI, Ant Design
Cloud & DevOps
AWS, GCP, Azure, Docker, Kubernetes, Terraform, Nginx, Cloudflare, GitHub Actions, GitLab CI
Observability & CI/CD
Prometheus, Grafana, ELK Stack, Jenkins, Blue-Green Deploys, Canary Releases, APM & Flame Graphs
Payments, Auth & Security
Stripe, PayPal, Paddle, NMI, Valor, OAuth 2.0, JWT, Firebase Auth, CASL / RBAC

Experience

Founder & Lead Engineer · Vertoone

January 2024 – Present
  • Founded and architected a product studio actively shipping 7+ products spanning SaaS, AI automation, community platforms and ISP management.
  • Designed event-driven, multi-tenant architectures targeting sub-50ms APIs and 99.9% uptime.
  • Integrated 40+ third-party APIs - payments, ads, messaging and AI - with idempotent webhook handling.

Senior Software Engineer (Team Lead) · MyManager

April 2024 – Present
  • Architected and led development of a scalable MERN microservices CRM serving enterprise clients.
  • Managed and mentored a team of 18 engineers across the full development lifecycle.
  • Engineered an automated marketing workflow system, reducing manual processing time by 50%.

Assistant Manager (Software Engineer) · Pakiza Software Limited

February 2024 – April 2024
  • Directed a team of 10+ engineers for the D-Social and AI-Grow applications.
  • Integrated the AI-Grow advertising platform with D-Social for seamless feature synergy.
  • Implemented real-time features using Socket.io and WebRTC, improving engagement.

Software Engineer · AKIJ iBOS Limited

October 2022 – January 2024
  • Developed enterprise-scale apps - iBOS Enterprise (ERP) and Peopledesk (HRMS).
  • Streamlined HR operations including salary structure preparation with intuitive UI/UX.
  • Optimized finance-module operations within the ERP, improving processing efficiency.

Software Developer (Part-Time) · Sped Delivery

January 2024 – March 2025
  • Developed and maintained web applications for food delivery and taxi platforms.
  • Collaborated with an international team to ship new features.
  • Resolved technical issues and implemented performance optimizations.

Full-Stack Developer · Content Turbine

February 2021 – September 2022
  • Developed the Writers Portal and Demo Turbine platforms.
  • Built a CMS enabling efficient writer-editor collaboration and workflow tracking.
  • Implemented full-stack features using the MERN stack.

Open Source

Express Smart Cache — Lightweight, flexible caching middleware for Express.js with in-memory and Redis support.
Express Service Proxy — Smart proxy middleware with load balancing, failover and circuit breaking.

Education

Bachelor of Science in Computer Science & Engineering

Daffodil International University

2018 – 2021 · CGPA: 3.41 • Batch: CSE-49

Key Achievements

  • Founded Vertoone and actively ships 7+ products serving clients worldwide.
  • Led a team of 18+ engineers delivering an enterprise CRM with 50% faster workflow automation.
  • Architected real-time systems (WebRTC + Socket.io) serving thousands of concurrent users.