Hassan Shahzad
@hassanshahzad2
I build full-stack fintech, collaborative, Production, and AI voice products with React, NestJS, TypeScript, Node.js, and PostgreSQL.
PakistanWhat I'm looking for
Full-stack engineer with 5+ years shipping production systems across fintech, collaborative platforms, and AI-integrated applications. Specialized in React, NestJS, and TypeScript, with hands-on experience integrating OpenAI Realtime API, Whisper, and WebRTC for in-product voice features, building offline-first collaborative tools with CRDT, and shipping multi-tenant AI agent systems (FastAPI, LangChain, OpenAI Agents API). Strong ownership of features end-to-end, from API design to deployment, in async, remote-first teams. Looking for a full-time remote role where AI integration or real-time systems are central to the product.
Experience
Work history, roles, and key accomplishments
Senior Software Engineer
Calandi GmbH
May 2025 - May 2026 (1 year)
Full-stack engineer building complex financial systems and real-time collaborative platforms using React, NestJS, and modern TypeScript ecosystems. Continuing part-time with the CEO on new product exploration after the main engagement concluded.
Software Engineer
Software Alliance
Mar 2024 - May 2025 (1 year 2 months)
Led frontend development for a multi-tenant SaaS POS product, built NestJS APIs for a mobile app, and developed a Solana meme coin trading platform. Integrated third-party services and mentored junior developers.
Software Engineer (AI Agent Focus)
Hashlogics
Jan 2025 - Apr 2025 (3 months)
Built a per-tenant AI conversational agent platform for healthcare clinics, including automated follow-up systems and multi-tenant agent provisioning. Developed backend in Python with FastAPI and integrated OpenAI Agents API.
Associate Software Engineer
Techmania
Jan 2022 - Mar 2024 (2 years 2 months)
Developed backend systems for healthcare and pharmacy platforms, social media automation, and admin dashboards. Designed reusable modular backend architecture and optimized MySQL performance.
Education
Degrees, certifications, and relevant coursework
Knowledge Streams
Bootcamp, MERN Stack
2023 - 2023
Completed a MERN Stack Bootcamp in Lahore from January to April 2023.
Government College University Faisalabad
Bachelor of Science, Software Engineering
2017 - 2021
Grade: 3.33/4.00
Pursued a Bachelor of Science in Software Engineering, achieving a CGPA of 3.33 out of 4.00.
Tech stack
Software and tools used professionally
Availability
Location
PakistanAuthorized to work in
Portfolio
hassan-shahzad.netlify.appSalary expectations
Social media
Job categories
Skills
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