Subhash Chandra
Rogers,AR
Overview
7
7
years of professional experience
Work History
SE 3
Walmart Inc.
Rogers, AR
06.2024 - Current
- Architected and operated a high-throughput backend using Java and Spring Boot, reliably handling ~40M requests per day while maintaining low latency under heavy concurrent load.
- Implemented database-level optimizations in PostgreSQL, including table partitioning, targeted indexing, and connection pool tuning, resulting in a 50% increase in throughput during peak traffic windows.
- Designed and deployed a custom Kafka partitioning approach to prioritize event processing paths, reducing end-to-end latency by 40% and improving near-real-time data flow across services.
- Integrated Redis-based distributed caching to offload frequent reads from the database, significantly lowering response times and stabilizing system performance during high-usage periods.
- Enhanced platform security posture by enforcing OAuth2 authentication, TLS encryption, and HTTPS through Spring Security, contributing to a 30% reduction in security-related findings.
Senior Backend Developer
HTS
San Jose, CA
11.2023 - 06.2024
- Developed RESTful backend services using Spring Boot for a secure transaction platform, driving a 90% improvement in user experience and interaction reliability.
- Increased system resilience by implementing Resilience4j circuit breakers and fault-tolerance patterns, isolating downstream failures and preventing cascading outages across microservices.
- Optimized critical APIs by combining query-level tuning and distributed caching mechanisms, enabling efficient processing of high-volume transactional workloads.
- Established end-to-end streaming observability by connecting Kafka pipelines with the ELK stack, helping reduce Mean Time to Detection (MTTD) by 30% for production issues.
Software Engineer Intern
Cohere Health
Boston, MA
06.2023 - 11.2023
- Designed and maintained 130+ REST APIs using Java and Spring Boot, integrated with Kafka streams to enable reliable, real-time data exchange between microservices.
- Improved healthcare pre-authorization approval rates by 20% by optimizing scheduled/batch processing flows and embedding rule-driven decision logic into backend workflows.
- Reduced database query latency by 30% through creation of optimized PostgreSQL views and effective use of JPA/Hibernate ORM mappings.
- Built a production-grade monitoring and alerting ecosystem with Prometheus and Grafana, enabling early detection of anomalies and improving overall service stability.
Senior Software Developer
Capgemini Technology Services
Banglore, India
08.2021 - 01.2022
- Engineered concurrency improvements using multithreading and asynchronous processing models, increasing overall system throughput by 20% under heavy workloads.
- Deployed containerized backend services using Docker on AWS ECS with auto-scaling configurations, achieving elastic scalability while reducing infrastructure spend by 20%.
- Designed and implemented a product reservation system with Java, Spring Boot, and MySQL, exposing RESTful APIs to support reliable data exchange between services.
Software Engineer 2
Honeywell Technology Solutions
Banglore, India
08.2018 - 07.2021
- Designed and delivered REST-based backend services for e-commerce workflows using Java and Spring Boot, incorporating Hibernate/JDBC with pagination and sorting via Spring Data JPA, and improving SQL execution efficiency by 8%.
- Built an enterprise-grade Automated Test System (ATS) leveraging Java, React, Spring, Selenium, and Cucumber, cutting over 500 hours of manual testing per week and achieving high code quality through SonarQube-driven coverage and analysis.
- Provisioned and operated cloud infrastructure on AWS (EC2, S3, EBS, RDS, CloudFormation), while enabling auto-scaling and load balancing using ECS and Elastic Beanstalk, leading to a 25% reduction in ongoing maintenance effort.
- Created a Jira automation solution using Java, Spring, and Jira REST APIs to streamline project workflows, and integrated with Confluence to automate and centralize technical documentation.
- Enforced aerospace software compliance standards by applying Checkstyle and FindBugs, performing rigorous code reviews and quality audits to ensure safe, secure, and standards-aligned deliveries.
- Authored and maintained API specifications and technical documentation using Swagger and Confluence, and validated endpoints with Postman to support long-term maintainability and onboarding.
- Led technical onboarding and knowledge-sharing initiatives by conducting training sessions and workshops on design patterns, SOLID principles, clean code, and Agile practices, accelerating team ramp-up.
Education
Master of Science - Software Engineering
SJSU
12.2023
Skills
- Programming Languages: Python, Java, JS, C, C, Javascript (JS), Groovy, Typescript (TS)
- Web Technologies and Frameworks: NodeJS, ReactJS, GraphQL HTML5, CSS, Bootstrap, Rest API, Spring Boot, Django, Grails, JMeter, Mocha, Junit,GitHub, Eclipse, Visual Studio Code, JIRA, Postman, Bitbucket
- Databases: MySQL, MongoDB, PostgreSQL
- Cloud Technologies: AWS (EC2, RDS, ECS, ECR, S3), GCP, Docker
Projects
Tech Talk (Oct 2023)
- Architected a full-stack Q&A discussion platform inspired by Stack Overflow, supporting 10,000+ questions and answers using Java, Spring Boot, React.js, React Native, and a microservices-based backend.
- Improved page load performance and SEO by introducing server-side rendering with Next.js, significantly enhancing initial render speed and user experience.
- Mentored junior engineers on SOLID principles, design patterns, and clean coding practices, increasing overall team delivery efficiency by 30% through structured guidance and technical reviews.
- Instituted automated code quality gates using SonarQube, lowering defect rates by 15% and standardizing static code analysis across repositories.
- Strengthened collaboration through consistent code reviews, pair programming, and Git/GitFlow-based release management, enabling smoother feature integration and deployments.
Time Table Generator (Jan 2022)
- Built a web-based automatic scheduling system using ReactJS, NodeJS, Express, and MongoDB that eliminated 90% of manual timetable creation effort.
- Enabled real-time timetable updates by leveraging MongoDB Change Streams to instantly propagate scheduling changes across clients.
- Developed a conflict-detection and resolution service with Python and Django that suggests valid alternatives when schedule clashes occur.
- Implemented randomized and genetic algorithms to auto-generate optimized timetables for users with partial inputs or complex constraints.
- Applied NumPy and Pandas for fast data transformation and analysis within scheduling workflows.
- Secured the platform with JWT- and OAuth2-based authentication, using bcrypt for encrypted password storage.
- Managed source control with Git/GitHub and followed Scrum and Kanban practices to coordinate feature delivery.
AWARDS & ACHIEVEMENTS
- Honeywell Bravo Award - For getting productivity savings of 150k in Tool Qualification Activities.,
- Honeywell Project Award - Secured 2nd place in completion of Honeywell project for "Natural Language Interface to query a Database".,
- Completed DFSS (Design for Six Sigma) Black Belt certification.
Timeline
SE 3
Walmart Inc.
06.2024 - Current
Senior Backend Developer
HTS
11.2023 - 06.2024
Software Engineer Intern
Cohere Health
06.2023 - 11.2023
Senior Software Developer
Capgemini Technology Services
08.2021 - 01.2022
Software Engineer 2
Honeywell Technology Solutions
08.2018 - 07.2021
Master of Science - Software Engineering
SJSU