Hritik Kumar

Backend Software Engineer with 4+ years building scalable payment and fintech systems in Node.js/TypeScript — specialized in payment gateway integrations, distributed systems (Redis, RabbitMQ), and AI-integrated backend workflows, having led integrations processing $50M+ annually.

Freelance Backend Developer at SlipGen (2026-04 – Present)

SaaS Salary-Slip Management Platform for MSMEs

• Designed a modular monolith architecture with dedicated modules for authentication, business, employee and payroll management, cutting new-feature development time by 30%
• Designed PostgreSQL database schemas for businesses, employees, salary components and salary records, supporting end-to-end payroll workflows across 50+ salary components
• Developed REST APIs and authentication workflows for business onboarding, employee management and salary processing, reducing business onboarding time by 40%
• Automated salary-slip generation and PDF creation, enabling businesses to generate employee salary slips from payroll records in seconds — cutting manual processing time by 90%

Software Development Engineer 1 at SMILe Digital And Ai Lab (2024-10 – 2026-02)

Payment Integration Team and Lending Team (CREDIT/FINANCE)

• Integrated Yes Bank API, automating 500+ monthly payments and reducing manual effort by 80%
• Created client payment portal for QR-based invoice payments, automating reconciliation and cutting processing time
• Launched ICICI processor and wallet module — 30,000+ daily transactions, 99.5% uptime, 40% engagement boost
• Architected admin platform managing 20,000+ leads monthly with real-time dashboards and analytics
• Delivered system for 15+ lenders that streamlined workflow by 50% while processing Rs. 10 Cr+ in monthly financing
• Enhanced lender allocation algorithm, achieving a 2x increase in lead conversion and 30% faster approvals
• Migrated WordPress CMS to EC2, reducing infrastructure costs by 40%
• Reduced database load by 45% via Redis caching and connection pooling, improving response times
• Launched GPT-powered loan onboarding chatbot, automating end-to-end conversational data collection
• Integrated Vision AI for automatic PAN & Aadhaar verification, eliminating manual checks
• Collaborated with 3 teams, delivering 12+ features in 4 months with 95% on-time delivery

Payment Gateway Integration Team Lead at Jungleworks India Pvt Ltd (2021-07 – 2024-04)

• Spearheaded 100+ gateway integrations (Stripe, Razorpay, PayPal, PowerTranz, Cybersource), processing $50M+ annually across 15+ countries
• Engineered a proprietary payment engine for Yelo SaaS, cutting integration time by 60% for 10,000+ merchants
• Developed an AI store generator using OpenAI GPT and Google Custom Search API, letting 10,000+ merchants launch stores in seconds
• Evaluated 40+ gateway APIs, ensuring 99.9% transaction success for 100K+ daily users
• Optimized PostgreSQL schemas via query tuning and indexing, improving performance by 40%
• Deployed real-time WebSocket and Socket.IO communication for payment notifications
• Managed 5+ SMS providers, delivering 1M+ monthly notifications with 98% delivery rate
• Enhanced PetPooja POS, lowering sync errors by 75% and boosting merchant satisfaction by 40%
• Architected RESTful APIs with webhooks, achieving 99.95% uptime across 5M+ monthly calls
• Established encryption/auth measures and streamlined AWS CI/CD for zero-downtime deployments across 500+ clients
• Delivered 25+ features across 500+ enterprise clients, driving 30% platform growth

Master of Computer Applications in Computer Applications – National Institute of Technology, Karnataka, Surathkal (2018-07 – 2021-06)