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Sudarsan Khan

@sudarsankhan

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Senior backend engineer specializing in distributed, event-driven fintech systems.

India

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What I'm looking for

I’m looking for a team building high-scale, fault-tolerant distributed systems in fintech, where I can own architecture and deliver low-latency event-driven services in a cloud-native environment.

I’m a Senior Backend Engineer with 10+ years of experience building high-scale, distributed backend systems across fintech and other enterprise domains. I architected and built multiple production platforms from scratch with end-to-end ownership across architecture, backend, database, and cloud infrastructure.

My work focuses on Node.js microservices, event-driven architectures, and performance/reliability engineering—building fault-tolerant, idempotent, low-latency systems that handle 100,000+ transactions/day. Recently, I delivered a Bank Statement Reconciliation Platform that processed 100,000+ transactions/day, reduced reconciliation effort by 40%+, and improved API performance by ~60% using Redis-based caching, plus invoice and workflow automation systems supporting 10,000+ users.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

Digicorp Information Systems Pvt Ltd

Dec 2020 - Present (5 years 5 months)

Architected Node.js microservices and event-driven workflows for fintech reconciliation, processing 100,000+ transactions/day and supporting 10,000+ users. Improved matching accuracy and reduced query latency by optimizing MongoDB aggregation and implementing Redis-based caching strategies.

Microservices Event Driven Architecture MongoDB AWS Redis Idempotent Processing Performance Optimization System Design

Software Engineer

Tekskill India Pvt Ltd

Jun 2019 - Jul 2020 (1 year 1 month)

Architected data-intensive ASP.NET/Oracle backend systems and optimized PL/SQL pipelines for large datasets with millions of records to improve performance. Enhanced production analytics and monitoring to support profitability analysis.

ASP.NET Oracle Pl SQL Data Pipelines Backend Analytics SQL Optimization

Software Engineer

Strawberry Infotech Pvt Ltd

Apr 2018 - Jun 2019 (1 year 2 months)

Engineered a government workflow system with multi-stage approval pipelines to process and track thousands of applications across departments while reducing manual effort. Implemented role-based access control and document validation within backend application processing.

Workflow Automation Multi Stage Approval Pipelines Role Based Access Control Validation Backend Services

Senior Application Developer

Rplanx Technology Pvt Ltd

Jun 2016 - Mar 2018 (1 year 9 months)

Built ERP, tourism, and learning management systems from scratch, including the M360 LMS with end-to-end ownership. Designed architecture and database schema, managed deployments, and led a small engineering team to deliver complete solutions.

PHP MySQL Learning Management Systems System Architecture Database Schema Design Deployment Team Leadership