Harish Bala S

About Harish Bala S

Backend Engineer with 5+ years building cloud-native microservices that power critical business operations at scale.I specialize in designing and delivering high-performance REST APIs using Java, Kotlin, and Spring Boot on AWS. My sweet spot is architecting scalable backend systems—from database design to CI/CD automation—and owning features end-to-end.Recent Impact- Built production microservices handling critical field operations, deployed on AWS ECS with 99.9%+ uptime- Designed event-driven architectures using Kafka to decouple systems and improve reliability- Automated CI/CD pipelines achieving zero-downtime deployments and 10x faster release cycles- Optimized infrastructure costs through intelligent ECS scaling policies and resource management- Built RAG-based virtual assistant POC for contextual search capabilitiesTech Stack: Java 12, Kotlin, Spring Boot, AWS (ECS, Lambda, API Gateway, DynamoDB, Aurora, S3, SNS, EventBridge), Docker, Terraform, Kafka, PostgreSQL, GitHub ActionsI\'m passionate about writing clean, testable code and solving complex technical problems. I thrive in environments where I can collaborate directly with product teams, iterate based on user feedback, and see the impact of my work in production. Currently seeking opportunities at product-driven companies where I can leverage my backend expertise to build products users love. AWS Certified Developer Associate | AWS Certified Cloud Practitioner

Experience

1. Application Developer

   IBM

   Feb 2024 — Present · Bengaluru, IN

   Building scalable backend systems for a production application that powers critical automotive field operations. What I Work On:I design and deliver cloud-native microservices using Kotlin and Spring Boot on AWS. My focus is on building APIs that are reliable, performant, and can scale to handle growing demand. The tech stack includes ECS for container orchestration, DynamoDB and Aurora PostgreSQL for databases, and Kafka for event-driven architecture. DevOps & Infrastructure:Beyond development, I own the full delivery pipeline—building CI/CD workflows with GitHub Actions and Docker, managing infrastructure-as-code with Terraform, and setting up monitoring to ensure our systems stay healthy in production. Impact Areas:I work on performance optimization, cost reduction through smart scaling policies, and maintaining 99.9%+ uptime for production services. I also collaborate closely with product owners and architects to turn business requirements into technical solutions. Team Collaboration:Mentoring junior developers, participating in design reviews, and working cross-functionally with product and architecture teams to deliver features on time. Recent Innovation:Built a RAG-based virtual assistant POC using Python and FastAPI to enable contextual search within our application.Tech Stack: Kotlin • Java • Spring Boot • AWS (ECS, Lambda, DynamoDB, Aurora) • Docker • Terraform • Kafka

Education

• Amrita School of Engineering, Bangalore

  Bachelor of Technology - BTech, Mechanical Engineering