Powerhouse
On-demand digital services SaaS platform generating $50K+ MRR. Backend services, CRM integrations, workflow automation and real-time data pipelines.
- NestJS
- Supabase (PostgreSQL)
- Node.js
Lahore, Pakistan
Hafiz Muhammad Usman
Senior Product Engineer | Full Stack · AI
Senior Product Engineer with 7+ years building and shipping full stack SaaS products using React, Python, Node.js and AWS. Experienced in building AI-powered features and agentic workflows with LLMs (OpenAI, Claude via AWS Bedrock), LangChain and LangGraph, including prompt engineering, RAG with vector databases, and tool-calling. Owns features end to end, from architecture and APIs to UI, deployment and production support, with strong experience in workflow automation and CRM integrations across legal tech, sales, fintech and e-commerce.
Featured Projects
Hammer
AI work platform that takes tasks from ticket to production across a team's tools.
- TypeScript
- Python
- AWS
- Node.js
- Next.js
Liradocs
Legal practice management SaaS for law firms: case management, client intake, legal billing, time tracking, document automation and eBrief court bundles.
- TypeScript
- Python
- AWS
- Node.js
- Next.js
More projects
Meeting Copilot
AI sales assistant for Google Meet with real-time transcription, live sales coaching and automated Salesforce documentation. Built solo for a German B2B recruiting company, fully GDPR-compliant with EU-only data processing.
- NestJS
- React
- AWS Bedrock (Claude)
- +6
GoPDF
Browser-based PDF toolkit to edit, convert, compress and e-sign documents, with AI chat-with-PDF built using LangChain, RAG and a vector database.
- React
- TypeScript
- NestJS
- +2
Services
AI Features & Agents
LLM features, RAG chat, agentic workflows with LangChain/LangGraph.
Full Stack Product Development
SaaS products from architecture to deployment.
Workflow Automation & Integrations
CRM, Salesforce, Slack and third-party API integrations.
Backend & Cloud
Scalable APIs, data pipelines and AWS infrastructure.
Tech Stack
AI & LLM
- OpenAI
- AWS Bedrock
- Claude
- LangChain
- LangGraph
- RAG
- Vector DB
- Prompt Engineering
Frontend
- React
- Next.js
- TypeScript
- Redux
Backend
- Node.js
- NestJS
- Express
- Python
- FastAPI
- GraphQL
- WebSockets
Data
- PostgreSQL
- Supabase
- MongoDB
- Redis
- DynamoDB
Cloud & DevOps
- AWS
- Docker
- Kubernetes
- CI/CD (GitHub Actions)
Integrations
- Salesforce
- Slack
- Google APIs
- Stripe
Experience
Jun 2024 – Present
Backend Engineer
Powerhouse — USA, Remote
May 2026 – Jul 2026
AI Engineer / Full-Stack Engineer (Contract)
Recruiting NOW GmbH — Germany, Remote
Apr 2022 – May 2024
Senior Full Stack Developer
Renesis Tech — Lahore
Jul 2020 – Jul 2022
Full Stack Engineer
OptimusFox — Lahore
Mar 2019 – May 2020
MERN Stack Developer
Jobesk — Lahore
2016 – 2020
B.Sc. Mechatronics and Control Engineering
UET Lahore