Onkar Singh

Full Stack Engineer

Faridabad, Haryana, India2 yrs 11 mos experience

Key Highlights

Integrated QR-based payment methods processing 1000+ transactions.
Reduced worker script crashes by 70% through performance optimization.
Created automated dashboard saving 14+ tech support hours weekly.

Stackforce AI infers this person is a Full-Stack Developer with expertise in Fintech and E-commerce.

Contact

Skills

Core Skills

Full-stack DevelopmentPayment SystemsSoftware Development

Other Skills

API ArchitectureAmazon Web Services (AWS)Bootstrap (Framework)C (Programming Language)C++Cascading Style Sheets (CSS)Collaborative Problem SolvingCommunicationCore JavaData AnalyticsDatabase OperationsEngineeringEnglishExpress.jsFeature Implementation

About

Full Stack Developer with 3 years of experience building scalable web applications and payment systems Currently at Sociolla, I specialize in: ✅ QR-Based Payment Integration - processing 1000+ transactions ✅ Performance Optimization - reduced worker script crashes by 70% and improved MongoDB query latency by 40% ✅ Feature Implementation - designed locker pickup systems reducing wait times by 90% **Recent Achievements:** - Integrated QR-based payment methods for offline stores - Built automated dashboard reducing support hours by 14+ weekly - Resolved 170+ production issues through systematic debugging - Created comprehensive API documentation reducing onboarding time by 40% **Technical Expertise:** Frontend: React.js, JavaScript, HTML5, CSS3, Bootstrap Backend: Javascript, Node.js, Express.js, RESTful APIs, Microservices Databases: MongoDB, PostgreSQL, SQL, Redis Tools: Git, Jenkins, RabbitMQ, Kibana, Firebase, Netlify **What sets me apart:** Strong problem-solving skills, experience in fintech/e-commerce, and a proven track record of delivering solutions that directly impact business metrics - from processing 1000+ transactions to reducing system crashes by 70%..

Experience

2 yrs 11 mos

Total Experience

1 yr 5 mos

Average Tenure

Current Experience

Sociolla

Full Stack Developer

Apr 2024 – Sep 2025 · 1 yr 5 mos · Gurugram, Haryana, India · On-site

🚀 Building scalable payment and operational systems for Indonesia's leading beauty e-commerce POS platform
Key Achievements:
✅ Payment Innovation: Integrated QRIS-based payment methods (DANA, BNI, BRI) processing 1000+ QR transactions, directly improving checkout conversion rates
✅ Operational Excellence: Designed locker-based pickup system reducing customer wait times by 90% during peak hours, enhancing user experience
✅ Performance Engineering: Fixed critical memory leaks in worker scripts, reducing OOM crashes by 70% and optimizing database queries to decrease latency by 40%
✅ Product Development: Delivered 4+ admin panel modules expanding feature coverage by 15% and streamlining operational workflows
✅ Quality Assurance: Conducted code reviews and resolved 170+ UAT/production issues, ensuring 99%+ deployment success rate

QR-Based Payment IntegrationPerformance OptimizationFeature ImplementationMongoDBJavaScriptNode.js+5

Indifi

Software Development Engineer - 1

Sep 2022 – Mar 2024 · 1 yr 6 mos · Gurugram, Haryana, India · On-site

Key Contributions:
Process Automation: Built comprehensive dashboard module reducing repetitive tasks by 31% and saving 14+ tech support hours weekly
API Architecture: Designed secure RESTful APIs with JWT authentication for admin panel, ensuring controlled access and seamless integrations
Data Analytics: Wrote optimized SQL queries for user-specific data extraction and resolved 15+ backend issues through systematic debugging
Documentation: Created comprehensive API and workflow documentation, reducing new developer onboarding time by 40%

Process AutomationAPI ArchitectureData AnalyticsSQLSoftware Development

Milestoneos

Full Stack Developer Trainee

Dec 2021 – Aug 2022 · 8 mos · Noida, Uttar Pradesh, India · Remote

Gained hands-on experience developing full-stack web applications using the MERN stack (MongoDB, Express.js, React, Node.js). Built responsive user interfaces, implemented RESTful APIs, and managed database operations.

MERN StackRESTful APIsDatabase OperationsFull-Stack Development