MUTHUKUMAR KALAISELVAN
Trichy
Summary
Dynamic Software Engineer with expertise in C# and AWS, previously at VasTek Solutions Pvt. Ltd. Achieved a 25% improvement in backend responsiveness through optimized Lambda execution. Proficient in REST APIs and microservices, while fostering collaboration in Agile teams to enhance product delivery and stability.
Overview
2
2
years of professional experience
Work History
Software Engineer (Cloud & API Integration)
VasTek Solutions Pvt. Ltd.
India
03.2020 - 06.2022
- Delivered cross-platform applications using React Native integrated with AWS backend, enabling real-time delivery tracking, customer notifications, and operational visibility.
- Developed and integrated RESTful APIs and microservices using C# with AWS Lambda, supporting scalable mobile-to-cloud workflows and backend feature delivery.
- Improved backend responsiveness by ~25% by optimizing Lambda execution and applying asynchronous handling patterns and efficient data exchange.
- Strengthened reliability under poor network conditions using offline-first behaviors (caching/sync patterns), geolocation flows, and robust notification logic.
- Practiced TDD, pair programming, and contributed to CI/CD pipelines (Jenkins / GitLab CI/CD) to improve release stability and reduce regression risk.
- Collaborated in Agile teams (Scrum/Kanban) with product, UI/UX, and engineering stakeholders; supported documentation and code-review cycles.
Education
Master of Science - Advanced Computer Science
University Of Essex
United Kingdom10-2023
Bachelor of Science - Computer Science
Sathyabama University
Chennai04-2017
Skills
- C#
- Python
- JavaScript
- TypeScript
- REST APIs
- Microservices
- NET Core
- Nodejs
- AWS
- S3
- Lambda
- API Gateway
Projects
Logistics System Modernisation, Modernized a legacy logistics platform into modular service components and stable API interfaces consumed by mobile clients. Improved observability and delivery reliability via structured logging and automated CI/CD workflows, reducing downtime by ~20%. JPMorgan Chase - Software Engineering Job Simulation (Forage), Java, Spring Boot, Kafka, JPA, H2, REST, Maven, Implemented a Spring Boot microservice consuming high-throughput transaction events via Kafka (topic configuration + deserialization) and persisting via Spring Data JPA (H2). Integrated an external REST Incentive service (RestTemplate) and delivered balance query endpoints; validated behavior with Maven tests and debugger-driven verification.
Languages
- English, Fluent
- Tamil
- Malayalam
- Telugu
- French, Basic
Certifications Virtual Experience
- JPMorgan Chase - Software Engineering Job Simulation (Forage), 01/01/26, Kafka + Spring Boot microservice; JPA persistence (H2); REST endpoints; Maven tests.
- Tata Consultancy Services - Cybersecurity Analyst Job Simulation (Forage), 01/01/26, IAM-focused simulation with cybersecurity best practices and alignment of security controls to business objectives; delivered structured documentation and presentation-style communication.
Timeline
Software Engineer (Cloud & API Integration)
VasTek Solutions Pvt. Ltd.
03.2020 - 06.2022
Master of Science - Advanced Computer Science
University Of Essex
Bachelor of Science - Computer Science
Sathyabama University