NITIN KUMAR

Software Engineer

Gurugram, Haryana, India3 yrs 10 mos experience

Key Highlights

Designed a unified payment system powering all transactions.
Engineered a global authentication system boosting revenue.
Integrated observability platform reducing debugging time by 30%.

Stackforce AI infers this person is a Backend Engineer specializing in Fintech and SaaS solutions.

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Skills

Core Skills

NestjsDjangoAwsReact

Other Skills

Active in sportsAlgorithmsApplied MathematicsAuthenticationCONVINCRON JobsCachingCeleryChart.jsCompetitive ProgrammingCoupon EngineDB Schema OptimizationDBeaverData IntegrityData Structures

About

Backend Engineer passionate about building scalable systems that power real-world impact. From designing robust payment solutions to crafting global authentication flows, I specialize in turning complex challenges into reliable, high-performance backend systems. With expertise in NestJS, Django, PostgreSQL, AWS, and tools like Prisma ORM, Celery, and CI/CD (Jenkins), I create solutions that drive user growth, streamline operations, and boost system efficiency. I’m focused on creating secure, efficient, and business-driven backend solutions that enhance user experience and deliver measurable results.

Experience

3 yrs 10 mos

Total Experience

1 yr 11 mos

Average Tenure

2 yrs 1 mo

Current Experience

Soulsensei

Software Developer

May 2024 – Present · 2 yrs 1 mo · Gurugram, Haryana, India · On-site

Designed and deployed a unified, end-to-end payment system using Razorpay (mWeb, Android) and Apple In-App Purchase (iOS) with fallback validation and webhook logging — powering 100% of transactions across all platforms and serving as the primary revenue engine for the product.
Built a flexible coupon engine (global, user-level, course-level), powering 16% of payments and enhancing promo effectiveness via dynamic rule-based logic.
Developed a global authentication system supporting phone-based login (India) and email-based login (International), with full JWT token flow and secure session management — unlocking access for international users and contributing to 26% of total revenue.
Engineered a reliable notification service (Email, WhatsApp, Push) with message retry logic, delivery tracking, and Slack error reporting — reduced ops load and improved communication uptime.
Automated live session workflows (pre/post reminders, recording uploads, status updates) with CRON jobs and event-based triggers — cutting manual operations drastically.
Integrated SigNoz observability platform, capturing detailed logs for API requests/responses — reduced debugging time by 30% and improved backend reliability.
Optimized staging environment, implemented new DB schema, indexed critical queries, and introduced Gumlet CDN integration for performance and scalability.

RazorpayWebhook LoggingCoupon EngineJWT Token FlowNotification ServiceCRON Jobs+5

Uniacco

2 roles

Software Developer

Jun 2023 – Apr 2024 · 10 mos · Mumbai, Maharashtra, India · On-site

Streamlined backend operations for Unicreds, ensuring seamless loan processing and efficient application handling.
Integrated third-party services including SquadStack, Gupshup, MoEngage, Freshchat, and Salestrail, enhancing web application functionality and user engagement.
Engineered PDF and image compression features using PyMuPDF and img2pdf, reducing file size by 10% for documents below 5MB and 40% for above 5MB through a polling API.
Implemented WhatsApp and site chatbots via Freshchat, boosting user engagement by 15% while integrating MoEngage for enhanced marketing insights.
Boosted performance and scalability with caching, lazy loading, and Django ORM optimizations (select_related, prefetch_related, annotations, only), and used Celery for efficient asynchronous task processing.
Secured data integrity and privacy by addressing BOLA and BOPLA vulnerabilities and improving authentication and authorization.
Improved code maintainability and reduced developer onboarding time through comprehensive product documentation.
Leveraged Jenkins for CI/CD, ELK Stack for debugging, and AWS for server management, ensuring efficient deployment workflows and reliable application performance.
Migrated substantial datasets from third-party services into the database using Celery, Celery Beat, and SQS (Simple Queue Service), ensuring seamless integration with minimal downtime.

DjangoCeleryAWSJenkinsMoEngageFreshchat+4

Tech Intern

May 2022 – Apr 2023 · 11 mos · Mumbai, Maharashtra, India · Remote

Developed a comprehensive Partner Dashboard with dynamic graphs and charts, empowering partners to track contributions and enhance engagement through intuitive date filtering.
Engineered Partner Dashboard APIs using DjangoFilter and ModelResource, optimizing lead management through import-export functionalities.
Integrated CONVIN for recording and analyzing lead agent conversations, enabling valuable insights extraction. Leveraging this analysis, we optimized lead distribution based on the quality of agent interactions, resulting in increased lead conversion rates by 21%.
Utilized React, Material UI, Django, and MySQL to create a scalable and user-friendly Partner Dashboard.

DjangoReactMaterial UIMySQL