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Hi, I’m Touseef ur Rehman, a Backend Lead and Senior Full-Stack Developer with over 7.5 years of experience, currently delivering work remotely. I architect and deliver scalable, high-performance web applications, and I’ve shipped 12+ production projects, including 6 enterprise-grade platforms across social media, health-tech, music, and marketplace solutions. I specialize in Node.js, PHP/Laravel, React.js, MySQL, MongoDB, Redis, and cloud services such as AWS S3, AWS Lambda, Step Functions, GCP APIs, and Firebase FCM. I excel at leading backend teams, conducting code reviews, mentoring junior developers, and collaborating with frontend teams, project managers, and clients to take ideas from design to production.…Hi, I’m Touseef ur Rehman, a Backend Lead and Senior Full-Stack Developer with over 7.5 years of experience, currently delivering work remotely. I architect and deliver scalable, high-performance web applications, and I’ve shipped 12+ production projects, including 6 enterprise-grade platforms across social media, health-tech, music, and marketplace solutions. I specialize in Node.js, PHP/Laravel, React.js, MySQL, MongoDB, Redis, and cloud services such as AWS S3, AWS Lambda, Step Functions, GCP APIs, and Firebase FCM. I excel at leading backend teams, conducting code reviews, mentoring junior developers, and collaborating with frontend teams, project managers, and clients to take ideas from design to production.

Touseef ur Rehman

Back-End Developer, Full Stack Developer, Web Developer, +2

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Hi, I’m Touseef ur Rehman, a Backend Lead and Senior Full-Stack Developer with over 7.5 years of experience, currently delivering work remotely. I architect and deliver scalable, high-performance web applications, and I’ve shipped 12+ production projects, including 6 enterprise-grade platforms across social media, health-tech, music, and marketplace solutions. I specialize in Node.js, PHP/Laravel, React.js, MySQL, MongoDB, Redis, and cloud services such as AWS S3, AWS Lambda, Step Functions, GCP APIs, and Firebase FCM. I excel at leading backend teams, conducting code reviews, mentoring junior developers, and collaborating with frontend teams, project managers, and clients to take ideas from design to production.…Hi, I’m Touseef ur Rehman, a Backend Lead and Senior Full-Stack Developer with over 7.5 years of experience, currently delivering work remotely. I architect and deliver scalable, high-performance web applications, and I’ve shipped 12+ production projects, including 6 enterprise-grade platforms across social media, health-tech, music, and marketplace solutions. I specialize in Node.js, PHP/Laravel, React.js, MySQL, MongoDB, Redis, and cloud services such as AWS S3, AWS Lambda, Step Functions, GCP APIs, and Firebase FCM. I excel at leading backend teams, conducting code reviews, mentoring junior developers, and collaborating with frontend teams, project managers, and clients to take ideas from design to production.

Available to hire

Hi, I’m Touseef ur Rehman, a Backend Lead and Senior Full-Stack Developer with over 7.5 years of experience, currently delivering work remotely. I architect and deliver scalable, high-performance web applications, and I’ve shipped 12+ production projects, including 6 enterprise-grade platforms across social media, health-tech, music, and marketplace solutions.

I specialize in Node.js, PHP/Laravel, React.js, MySQL, MongoDB, Redis, and cloud services such as AWS S3, AWS Lambda, Step Functions, GCP APIs, and Firebase FCM. I excel at leading backend teams, conducting code reviews, mentoring junior developers, and collaborating with frontend teams, project managers, and clients to take ideas from design to production.

Skills

Experience Level

Expert

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Expert

Expert

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Expert

Expert

Expert

Expert

Expert

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Expert

Intermediate

Work Experience

Remote Backend Lead at PoshEnterprise Inc.

July 1, 2023 - Present

Led the development of a scalable, enterprise-grade social media platform (hybrid Laravel + Node.js with Express.js) and implemented REST API endpoints, a real-time communication system with Socket.IO, and a comprehensive media processing pipeline with FFmpeg. Built an AI-powered content moderation system (PoshDetect) and integrated Google Cloud Vision, Speech, Translate APIs for advanced features. Optimized performance with Redis caching, predictive feed prefetching, and robust security including token-based authentication and message encryption. Integrated Cloudflare R2 for storage and Firebase FCM/APNs for push notifications.

LLM Trainer at Meta LLaMA

April 1, 2024 - September 1, 2024

Contributed to an RLHF project for training the LLaMA large language model. Designed and curated domain-specific datasets for JavaScript, Python, C++, and SQL, ensuring quality and coverage. Fine-tuned the model to improve code generation, problem solving, and query optimization, enhancing understanding of algorithms, web technologies, and database management.

Senior Software Engineer at Softech Systems Limited

December 1, 2018 - April 1, 2021

Developed KalamTime, a cross-platform messaging and calling application with over 1 million downloads. Implemented real-time features (chat, voice calls, multi-party video conferencing) with Socket.IO, encryption, and privacy controls. Built a scalable backend with Node.js, Express.js, and MySQL; integrated Google Cloud Translation & Speech APIs for multilingual communication; delivered a React.js frontend with rich media sharing, and adopted Agile methodologies with proper code organization and version control.

Software Engineer at Coding Pixel, Lahore

December 1, 2018 - April 1, 2021

Developed and maintained full-stack applications using Laravel, PHP, MySQL and Vue.js; built RESTful APIs; implemented real-time features with Socket.IO; integrated third-party services such as Stripe, PayPal, and Google Maps; contributed to multi-vendor marketplace logic and payments workflows; collaborated with cross-functional teams to align features with business goals.

LLM Trainer at Turing

April 1, 2024 - August 1, 2024

Contributed to an RLHF pipeline for a Large Language Model, focusing on code generation quality across JavaScript, Python, C++, and SQL. Designed and curated domain-specific training datasets to improve accuracy, coverage, and quality. Achieved measurable improvements in code accuracy, problem-solving efficiency, and database query optimization after multiple fine-tuning iterations.

Backend Lead / Senior Software Engineer at Ogoul Technology

July 1, 2023 - Present

Led the end-to-end design and architecture of a Twitter/X-scale enterprise social media platform using a hybrid Laravel + Node.js/Express.js + MySQL stack. Implemented RESTful endpoints, a real-time messaging layer via Socket.IO with end-to-end encryption, and a media processing pipeline using FFmpeg. Optimized a critical news feed bottleneck by restructuring the database schema, adding Redis caching, and prefetching news feed APIs, reducing response times from 3–4 seconds to 2–3 milliseconds. Integrated PoshDetect AI content moderation with Google Cloud Vision, Speech, and Translate for multilingual safety. Conducted code reviews, set coding standards, and mentored junior developers. Managed cloud infrastructure including Cloudflare R2 object storage and Firebase FCM/APNs for push notifications.

Senior Software Engineer at Softech Systems Limited

April 1, 2021 - June 1, 2023

Contributed to the backend and frontend development of KalamTime, a cross-platform messaging and calling app with 1M+ downloads across Android, iOS, and desktop. Implemented real-time chat, voice calls, and multi-party video conferencing using Socket.IO, with encryption and privacy controls. Built a scalable backend using Node.js, Express.js, and MySQL, designing RESTful APIs for low-latency performance under high user loads. Integrated Google Cloud Translation & Speech APIs to enable real-time multilingual communication, supporting text and audio translation. Developed the frontend web client using React.js with rich media sharing capabilities. Adopted Agile methodologies and maintained code quality through the Repository Pattern and Git.