Hannan Raza
@hannanraza
Backend-focused Node.js engineer building scalable services, migrations, and event-driven integrations.
PakistanWhat I'm looking for
I’m a backend-focused Software Engineer with 4+ years of experience building scalable Node.js and NestJS applications. I design data migration pipelines with strong validation and data integrity guarantees, and I develop production backend services that support real users.
In recent roles, I worked on legacy-to-modern system migrations using Node.js and PostgreSQL, and I built internal tools integrated with Node.js APIs and PostgreSQL. I also develop automation workflows and backend logic for message handling and task execution, integrating external APIs for messaging and web search.
I bring hands-on expertise across event-driven architectures and production-grade integrations—PostgreSQL, MongoDB, Redis, GraphQL, and third-party APIs (including Twilio). I’m currently working remotely with international teams to deliver backend platforms and help modernize legacy systems.
Experience
Work history, roles, and key accomplishments
Automation Integration
Openclaw
Jan 2026 - Present (3 months)
Built automation workflows in Openclaw integrating WhatsApp messaging with email read/send and external APIs. Developed backend logic to automate message handling and task execution workflows.
Software Engineer (Backend)
Calandi GmbH
Oct 2025 - Jan 2026 (3 months)
Worked on legacy-to-modern system migration projects using Node.js and PostgreSQL. Designed validated data migration pipelines and developed internal tools in Retool integrated with Node.js APIs and PostgreSQL.
Node.js Developer
Coding Crafts
May 2024 - Oct 2025 (1 year 5 months)
Contributed backend services for HelloGov using NestJS, GraphQL, and PostgreSQL. Implemented a production refund module via the Ecrypt payment gateway, automated daily email reports, integrated Twilio SMS for alerts and OTP verification, and built AWS Lambda services using SQS for async processing and analytics.
Associate Software Engineer
AppRocket
Feb 2022 - Feb 2024 (2 years)
Worked across multiple MERN stack applications, primarily on backend development with Node.js and Express. Designed REST APIs and authentication flows, optimized MongoDB schemas for production use, and collaborated with frontend teams to integrate APIs for admin dashboards and web apps.
Education
Degrees, certifications, and relevant coursework
Knowledge Streams
MERN Stack Bootcamp, MERN Stack Development
2023 - 2023
Completed a MERN Stack bootcamp focused on backend development with Node.js, Express, MongoDB, and PostgreSQL, with React for frontend integration.
University of Central Punjab
Bachelor of Science in Computer Science, Computer Science
2018 - 2022
Grade: 3.03 (CGPA)
Earned a Bachelor's degree in Computer Science at the University of Central Punjab (Lahore) from 2018 to 2022, achieving a CGPA of 3.03.
Tech stack
Software and tools used professionally
Availability
Location
PakistanAuthorized to work in
Job categories
Interested in hiring Hannan?
You can contact Hannan and 90k+ other talented remote workers on Himalayas.
Message HannanFind your dream job
Sign up now and join over 100,000 remote workers who receive personalized job alerts, curated job matches, and more for free!
