Hi, I’m
Senthil Kumar Balasubramanian
Fullstack Developer | Cloud-Native Engineer | AWS Specialist
Chennai
Summary
Results-driven fullstack developer with 8+ years of experience building scalable applications across startups And SaaS platforms. Adept at developing robust frontend interfaces using React and TypeScript, combined with backend expertise in Node.js and Java. Strong foundation in object-oriented programming. Experienced in building micro-services and serverless architectures on AWS, and implementing CI/CD pipelines using modern DevOps practices. Passionate about clean code, SOLID principles, and delivering high-performance applications.
Overview
9
years of professional experience
3
Languages
4
years of post-secondary education
Skills
Java
Nodejs
Reactjs
Angular
Python
Docker
Kubernetes
HTML, CSS
Tailwind
Bootstrap
Postgres
DynamoDB
Redis
Kafka
Work History
Grootan Technologies
Technical Lead - Level 2
05.2024 - Current
Job overview
- Led the design and development of scalable backend services for Ezto Verify and Ezto Notify, utilizing Java and Node.js for building robust APIs.
- Developed a full-stack API marketplace application using Angular (frontend) with Java Spring Boot (backend), integrated with PostgreSQL and Redis for efficient data access and caching.
- Built a reusable Angular library with an HTTP interceptor to handle Authorization headers and error responses, streamlining front-end integration.
- Architected and deployed microservices using AWS Lambda, enhancing system scalability and performance across both backend and front-end components.
- Spearheaded cloud migration strategy, optimizing infrastructure costs by 25% and improving overall system performance and resilience.
- Implemented GitOps-based deployment pipelines using Argo CD, ensuring safer rollouts and real-time synchronization across multiple environments.
- Enhanced file retrieval performance and cost savings by optimizing S3 bucket policies and lifecycle rules.
- Ensured high-quality code across both front-end and back-end with thorough code reviews, debugging, and performance optimizations.
- Mentored junior engineers in both front-end and back-end technologies, including Angular, Java, Node.js, and cloud best practices.
- Collaborated with DevOps and Product teams to troubleshoot live issues, ensuring smooth integration and end-to-end system stability.
Vorwarts Technology
Founding Member - Engineering
09.2023 - 05.2024
Job overview
- Designed and implemented event-driven architectures, enabling seamless scalability and maintainability using .
- Built foundational backend APIs for Forward, a SaaS platform using Nodejs (Backend) and Angular (Frontend).
- Designed and implemented multi-region database replication using AWS RDS, ensuring data synchronization and high availability across multiple services.
- Integrated observability tools (AWS Cloudwatch, AWS X-Ray) to monitor performance and optimize resource usage.
- Built CI/CD pipelines with AWS CodePipeline and used AWS CDK for infrastructure automation.
- Led a diverse team of professionals, promoting collaboration, creativity, and a positive work environment.
- Fostered a culture of innovation within the organization by encouraging experimentation with new ideas and technologies.
- Led mobile application development efforts, ensuring seamless integration with backend services.
Persidio
Associate Architect
02.2019 - 08.2023
Job overview
- Acted as a technical lead in customer-facing roles, advising on AWS best practices and implementing distributed systems for large-scale enterprise applications.
- Led and mentored a team of 5+ engineers in designing and implementing highly resilient systems, fostering a culture of knowledge-sharing and best practices.
- Developed and optimized API-driven microservices using Java ensuring seamless data exchange between systems.
- Diagnosed and resolved inter-service communication failures across VPCs by implementing VPC peering and updating route tables and security groups in a customer-facing application.
- Designed and implemented an algorithmic pricing engine for a client in the sports media industry, enabling dynamic pricing of video content based on factors like sport type, video resolution, user location, and subscription tier—delivered as part of a customized solution to enhance monetization and user engagement.
- Built reusable UI components using React + Tailwind, reducing frontend development time by 30%.
- Designed a Redux-powered global state to ensure maintainability.
- Implemented CI/CD pipelines and automated deployments using GitHub actions.
- Enhanced event-driven architecture, leveraging AWS Lambda, AWS EventBridge to improve system responsiveness.
- Designed and implemented a real-time messaging system using AWS AppSync and DynamoDB, enabling seamless bidirectional communication with low-latency updates and offline support via AppSync's built-in data synchronization ensuring instant user updates.
- Developed a real-time video ingestion and processing pipeline using Amazon Kinesis Video Streams, enabling low-latency video analysis for a real-time face recognition application that used Amazon Rekognition.
- Developed comprehensive architectural plans to meet specific budgetary requirements and project timelines.
Fourkites
Software Development Engineer
05.2018 - 01.2019
Job overview
- Build scalable APIs using Node.js with optimized database queries for logistics tracking.
- Optimized backend services for high concurrency by implementing caching strategies and asynchronous processing, ensuring seamless performance under heavy loads.
- Developed reusable code libraries to expedite future development efforts, reducing time-to-market for new features.
- Improved system stability through rigorous debugging processes that identified root causes of issues quickly and efficiently addressed them before deployment deadlines were met.
- Led iOS application development, implementing UIKit-based custom views, offline data handling with CoreData, and MVVM for improved modularity and testability.
Zoho technologies Pvt Ltd
Member Technical Staff
02.2017 - 05.2018
Job overview
- Designed and built the Pubsub SDK, enabling real-time communication for mobile applications.
- Contributed to API-driven backend development for customer support platforms using Java Springboot.
- Led iOS mobile development, creating high-performance applications using UIKit, CoreData, and MVC architecture, ensuring smooth UI interactions and robust data management.
- Developed iOS and Android SDKs for the flagship customer service product, enabling third-party developers to integrate with Zoho's platform seamlessly.
Sirius Computer Solutions Pvt Ltd
Consultant Trainee
05.2016 - 02.2017
Job overview
- Played a key role in the Mattel project, where I exposed core functionalities of the eCSR module as REST APIs to streamline service integration.
Education
Velammal College Of Engineering And TechnologyMadurai
Bachelor of Engineering from Computer Science Engineering
08.2012 - 04.2016
Languages
English
Advanced (C1)
Tamil
Bilingual or Proficient (C2)