Absar Khan

Results-driven Full Stack Developer with 3+ years of experience specializing in backend engineering and enterprise application development. Proven expertise in designing and building scalable RESTful APIs, scalable architecture, and cloud-native solutions using Node.js, Express.js, MongoDB, and AWS. Hands-on experience with real-time systems using WebSockets, caching with Redis, CI/CD pipelines, and Docker-based containerization.

Delivered high-impact internal products (HRMS & CRM) that streamlined operations for 200+ users. Adept at translating business requirements into robust technical solutions with strong ownership of the entire SDLC.

Software Developer — Backend & Full Stack at Falcon Multi Service Ltd. (2024-05 – Present)

• Architected and developed scalable RESTful APIs using Node.js & Express.js serving 200+ enterprise users with JWT-based authentication, role-based access control (RBAC), and secure middleware layers.
• Engineered real-time notification and event systems using WebSockets (Socket.io), enabling instant updates for attendance, payroll, and CRM activity feeds.
• Implemented Redis caching for high-frequency API endpoints, improving response times by ~50% and reducing database load on critical payroll and reporting modules.
• Designed and optimized MongoDB schemas with aggregation pipelines and indexing strategies to handle complex payroll computation and multi-level sales reporting efficiently.
• Owned complete DevOps lifecycle: containerized applications with Docker, configured Nginx as a reverse proxy, and built CI/CD pipelines on AWS EC2 — reducing deployment time by ~40%.
• Led end-to-end delivery of HRMS and CRM enterprise platforms from requirement analysis to production deployment, collaborating directly with business stakeholders and cross-functional teams.
• Integrated third-party services including payment gateways and email (Nodemailer) to automate follow-ups and transactional communications.

Software Developer — Full Stack at DigiRich (2023-02 – 2024-05)

• Built and maintained dynamic, responsive web applications using JavaScript, Node.js, and REST APIs for multiple client projects with strict delivery timelines.
• Integrated third-party Payment Gateway (Razorpay) and Email APIs into client web applications, enabling end-to-end transactional workflows.
• Collaborated with senior developers in an Agile/Scrum environment, participating in sprint planning, code reviews, and bug resolution for live production systems.
• Developed reusable frontend components using HTML5, CSS3, and JavaScript (ES6+), ensuring cross-browser compatibility and mobile responsiveness.

Bachelor of Engineering in Computer Engineering – Anjuman-I-Islam's Kalsekar Technical Campus (2020 – 2023)