Open to opportunities

Sandeep Chauhan

@sandeepchauhan1

Message

I build high-throughput Java microservices for finance, healthcare, aviation, and enterprise platforms.

India

Message

What I'm looking for

I'm seeking Senior or Lead Backend Engineering roles where I can build scalable Java microservices, improve reliability and performance, mentor engineers, and contribute to Agile delivery. I'm open to relocation across India.

I've built and scaled Java/Spring Boot platforms for Therapy Brands, Goldman Sachs, Emirates, Verizon, and Defence Forces applications. My work spans healthcare SaaS, financial transaction processing, airline reservation systems, telecom modernisation, and enterprise web applications.

At Goldman Sachs, I designed REST APIs that supported secure processing of more than 1 million financial transactions daily. I reduced API response times from 1.8 seconds to under 400ms through SQL query and indexing improvements, while implementing OAuth2 and RBAC across the transaction-processing suite.

At Therapy Brands, I led the migration of a core patient-management platform from a monolith to independently deployable Spring Boot microservices, reducing deployment cycles by about 40% for 50,000+ active users. I also helped raise uptime from roughly 70% to 90% by resolving critical production incidents.

I bring hands-on experience in event-driven architecture, database performance, API security, resilient services, and Agile delivery. I've mentored teams of 5–10 engineers, reviewed code, and helped teams deliver reliably across complex product environments.

Experience

Work history, roles, and key accomplishments

Senior Software Developer

Tietoevry

Dec 2023 - Apr 2025 (1 year 4 months)

Led monolith-to-microservices migration of a healthcare SaaS platform, cutting deployment cycle time by ~40% and raising uptime from ~70% to ~90%. Sustained 100% on-time sprint delivery across 15+ Agile cycles.

Java Spring Boot Microservices Agile Scrum PostgreSQL MySQL SQL Query Optimization Indexing JWT RBAC Docker AWS CI CD Git Jira Linux

Module Lead

Mphasis

Mar 2023 - Dec 2023 (9 months)

Designed and built REST APIs for a financial transaction-processing platform handling 1M+ transactions daily. Cut API response time from 1.8s to under 400ms and implemented OAuth2 and RBAC security.

Java Spring Boot JPA PostgreSQL REST APIs RBAC SQL Query Optimization Indexing Microservices Code Review

Senior Software Developer

Coforge

Dec 2021 - Feb 2023 (1 year 2 months)

Architected scalable backend microservices for airline reservation and scheduling systems. Improved transactional query performance by 35% and reduced payment-flow failures with resilient patterns.

Java Spring Boot Microservices SQL PostgreSQL MySQL Retry Logic Error Handling

Senior Software Engineer

Prodapt Solutions

Jun 2021 - Dec 2021 (6 months)

Refactored legacy telecom modules to SOLID-compliant clean code during a Java 11/Spring Boot migration, cutting bug count by ~25%. Authored technical documentation and led knowledge-transfer sessions.

Java Spring Boot SOLID Principles Clean Code Technical Documentation Knowledge transfer Refactoring

Software Engineer

Vihaan Network Limited

Nov 2017 - Jun 2021 (3 years 7 months)

Built and maintained Java/Spring/Hibernate enterprise applications for defence systems, meeting strict SLA requirements. Delivered full-stack features with REST APIs and front-end modules.