Sabeel Khan

CEO

Delhi, India5 yrs 1 mo experience

Most Likely To SwitchHighly Stable

Key Highlights

Led critical payment features at PayU.
Mentored over 10,000 students in web development.
Expert in backend systems and clean architecture.

Stackforce AI infers this person is a Backend-focused Fintech Engineer with strong educational mentorship experience.

Contact

sabeel.khan@payu.com LinkedIn

Skills

Core Skills

Backend DevelopmentPayment SystemsMentorship

Other Skills

AJAXAWSAmazon SQSApache KafkaBack-End Web DevelopmentC++Express.jsGitHTML/CSSHTML5JavaJavaScriptKafkaMERN StackMicroservices

About

I'm a Software Engineer with over 4 years of experience building scalable backend systems, crafting developer-friendly solutions, and mentoring aspiring engineers. Currently at PayU (LazyPay), I work in the Repayments Pod, where I’ve led critical initiatives—from re-architecting complex services using Domain-Driven Design to building secure and intelligent payment features like UPI AutoPay Split and QR-based repayments. Previously at Coding Blocks, I wore two hats—backend engineer and lead instructor—where I built internal tools using the MERN stack and mentored over 10,000+ students, helping them master full-stack development and launch their careers. I'm passionate about system design, clean architecture, developer tooling, and sharing knowledge through teaching and content creation. Whether it’s simplifying a payments pipeline or explaining JavaScript prototypes to a beginner, I believe in solving problems with clarity and empathy. 🔧 Tech Stack: Node.js, Spring Boot, Java, TypeScript, MongoDB, Kafka, AWS, Redis, and more 🌱 Always learning. Always building. Always teaching.

Experience

Youtube

Educator and Content Creator

May 2025 – Present · 10 mos

Teaching web development and backend engineering to learners worldwide through practical, hands-on tutorials. Focused on Node.js, JavaScript, and full-stack development concepts, I create content that simplifies complex topics and helps developers build real-world projects.
Passionate about mentoring, creating educational content, and empowering the next generation of developers to code with confidence.
My Channel : https://www.youtube.com/@SabeelCodeLab

Codefast

Building Codefast

Jan 2025 – Present · 1 yr 2 mos · New Delhi, Delhi, India · Remote

CodeFast is an innovation-driven initiative creating platforms that solve real business problems through advanced engineering, AI automation, and modern architectures.

Payu

Software Engineer

Mar 2022 – Present · 4 yrs · Gurugram, Haryana, India · Hybrid

As part of the LazyPay Backend, I’ve led and contributed to several high-impact initiatives powering credit repayment infrastructure at scale. My work spans across payments, automation, compliance, and performance optimization:
🚀 Led the UPI AutoPay Split feature, enabling seamless high-ticket repayments by breaking them into multiple auto-debits, reducing user friction.
🔁 Re-architected a legacy Repayment System, simplifying complex template-based flows using DDD, Factory Pattern, and SOLID principles—enhancing maintainability and clarity.
📱 Delivered features like Manage AutoPay and UPI QR Repayment, giving users greater control and streamlining repayment via web.
💡 Introduced a Convenience Fee engine with A/B testing and segmentation for better fee personalization.
🔐 Spearheaded integration of HashiCorp Vault across PayU Finance with a reusable Spring Boot module, improving secrets management.
📊 Built a Kafka-S3-based API logging framework, enabling analytics via AWS Athena for millions of logs.
✅ Played a key role in compliance—revamped the User Consent Flow to meet RBI standards, securely storing over 1M+ consents.
🎯 Also contributed to the Rewards Platform, optimizing campaign logic and creating a bot that used biased probability to balance costs and user incentives.

Node.jsJavaTypeScriptMongoDBKafkaAWS+4

Coding blocks

Product Engineer and Mentor

Jan 2021 – Feb 2022 · 1 yr 1 mo · New Delhi, Delhi, India

At Coding Blocks, I played a dual role—building impactful backend systems and mentoring thousands of students in web development:
🛠️ Engineered a Student Tracking System to monitor placements, internships, and skill growth using the MERN stack, AWS, and microservices—directly improving internal analytics and student support.
📚 Lead Mentor for the Web Development course, guiding over 10,000+ students through advanced backend and frontend concepts via live sessions, projects, and doubt support.
🤝 Collaborated on multiple in-house products, contributing to scalable backend features and design.
👨‍💻 Mentored interns and junior developers, helping them transition from fundamentals to industry-ready skills.

MERN StackAWSJavaScriptBackend DevelopmentMentorship