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Ramesh Ramasamy

Lead Software Engineer | 10+ Yrs | Java, Spring Boot, Microservices | AWS, Kubernetes (EKS) | Distributed Systems | AI-Assisted Engineering & LLM Integration | Ex-athenahealth, FourKites | Immediate Joiner

Greater Bengaluru Area

10+ years of work experience

athenahealth
Oct 20251 yr 1 moPresent

Bengaluru

• Led zero-downtime migration of Tier-1 mission-critical services from AWS ECS to AWS EKS across multi-region infrastructure supporting 160K+ healthcare providers; designed a LaunchDarkly-based cutover strategy that became the standard pattern for subsequent EKS migrations. • AI-Assisted Engineering: developed custom AI code-review skills for Claude Code and Codex across Java, React and Perl codebases, standardizing review practices, scaling adoption to 2,000+ engineers and reducing manual code-review turnaround by ~70%. • LLM Integration: integrated LiteLLM (GPT-5 Mini) to generate days-of-supply estimates from user inputs, supporting prescription calculations across 1M+ daily transactions. • Engineered Version 13 of the Real-Time Prescriber Messaging system, enabling alternative medication and pharmacy options across 100M+ patient records. • Designed and maintained scalable Java-based microservices; led production monitoring, incident investigation, root-cause analysis and preventive fixes with product, DevOps and QA teams. Technologies: Java | React | Perl | GraphQL | AWS (ECS, EKS) | Kubernetes | LaunchDarkly | LiteLLM | Claude Code | Codex
FourKites, Inc.
Jun 20214 yrs 4 mosSep 2025

Chennai

• Designed and developed scalable backend microservices for the Order Intelligence Suite, increasing customer capacity by 50%+, from approximately 1,000 to 1,500+ concurrent users. • Resolved 100+ critical production issues, optimized database queries by 35% and contributed to achieving 99.95% system uptime. • Led development of an Order Dashboard using Elasticsearch aggregation and AntChart, improving data retrieval speed by 70% and reducing manual reporting effort by 40%. • Enabled 50+ customers to identify order trends faster and respond to operational challenges in under two minutes through real-time analytics. • Led migration of order-visibility services to Microsoft Azure, maintaining 99.9% uptime, reducing infrastructure costs by 25% and scaling services to support 2× traffic growth. • Implemented Azure Key Vault across 10+ services, reducing exposure risk by 90% and lowering overall vulnerabilities by 30%. • Served as PR Reviewer and Architecture Advisor, reviewing 50+ pull requests monthly and contributing to the architecture of 3+ new services, improving team productivity by 20%. Technologies: Java | Spring Boot | Microservices | Elasticsearch | Azure | Azure Key Vault | Jenkins | Apache Kafka | MongoDB
Infibeam Avenues Limited
Jun 20192 yrs 1 moJun 2021

• Drove expansion and optimization of the Government e-Marketplace (GeM) platform serving 50,000+ government departments, PSUs and organizations. • Collaborated across 7+ cross-functional teams to automate order processing, reducing manual intervention by 60% and improving operational efficiency by 35%. • Implemented Apache Solr multi-node replication for a catalog exceeding 1M items, reducing search response time from approximately 2 seconds to under 1 second. • Optimized indexing and retrieval, effectively doubling search performance and scalability. Technologies: Ruby on Rails | Apache Solr | MySQL | REST APIs.
Infibeam Avenues Limited
May 20163 yrs 2 mosJun 2019

• Redesigned the Return Merchandise Authorization (RMA) workflow, strengthening fraud detection and improving accuracy by 50%. • Optimized bulk-order processing using a Divide and Conquer algorithm, eliminating timeout-related crashes by 100%. Technologies: Ruby on Rails | MySQL | AngularJS.
Infibeam Avenues Limited
Dec 20155 mosApr 2016

• Designed and developed DutyKnocks, a web-based incident-management platform supporting real-time alerting and issue resolution. • Implemented multi-channel email, SMS and phone alerts, enabling faster IT incident response and reducing server downtime.

Ramesh’s AI Stack

claude code
claude code
codex
codex

Education

PSG College of Technology

Master of Computer Applications, Computer Science

PSG College of Technology

20133 yrs2016

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Headline

Lead Software Engineer | 10+ Yrs | Java, Spring Boot, Microservices | AWS, Kubernetes (EKS) | Distributed Systems | AI-Assisted Engineering & LLM Integration | Ex-athenahealth, FourKites | Immediate Joiner

About

Lead Software Engineer with 10+ years designing and scaling distributed systems, microservices and cloud-native platforms across healthcare, logistics, e-commerce and government technology. Available to join immediately. What I bring: • Java microservices at scale – platforms serving 160K+ healthcare providers and 1M+ daily transactions • Cloud & Kubernetes – led zero-downtime migration of Tier-1 services from AWS ECS to EKS, with a LaunchDarkly-based cutover strategy that became the standard pattern for later migrations; led an Azure migration that cut infrastructure costs by 25% and handled 2x traffic growth • AI-Assisted Engineering – built AI code-review skills for Claude Code and Codex across Java, React and Perl codebases, adopted by 2,000+ engineers and reducing manual review turnaround by ~70% • LLM Integration in production – LiteLLM (GPT-5 Mini) workflow generating days-of-supply estimates across 1M+ daily prescription transactions • Reliability & performance – 99.95% uptime, 35% faster queries, 70% faster analytics retrieval, Solr search cut from ~2s to <1s across 1M+ catalog items • Technical leadership – architecture advisor for 3+ new services, 50+ PR reviews per month, close collaboration with product, DevOps and QA Tech stack: Java · Spring Boot · Microservices · REST · GraphQL · Apache Kafka · AWS (ECS, EKS, EC2, RDS, S3, CloudWatch) · Microsoft Azure · Kubernetes · Docker · Elasticsearch · Apache Solr · PostgreSQL · MySQL · MongoDB · React.js · Ruby on Rails · Python · Jenkins CI/CD · New Relic · LaunchDarkly AI tools: Claude Code · Codex · GitHub Copilot · LiteLLM · LLM-integrated workflows Open to: Lead Software Engineer / Staff Engineer / Senior Backend Engineer / Tech Lead roles – Bengaluru, Chennai or Remote. Immediate joiner. Email: rameshramasamymca@gmail.com

Location

Greater Bengaluru Area

AI stack

claude code

codex

Work experience

Lead Member of Technical Staff (Lead Software Engineer) at athenahealth, Oct 2025 - Present · 1 yr 1 mo, Bengaluru, • Led zero-downtime migration of Tier-1 mission-critical services from AWS ECS to AWS EKS across multi-region infrastructure supporting 160K+ healthcare providers; designed a LaunchDarkly-based cutover strategy that became the standard pattern for subsequent EKS migrations. • AI-Assisted Engineering: developed custom AI code-review skills for Claude Code and Codex across Java, React and Perl codebases, standardizing review practices, scaling adoption to 2,000+ engineers and reducing manual code-review turnaround by ~70%. • LLM Integration: integrated LiteLLM (GPT-5 Mini) to generate days-of-supply estimates from user inputs, supporting prescription calculations across 1M+ daily transactions. • Engineered Version 13 of the Real-Time Prescriber Messaging system, enabling alternative medication and pharmacy options across 100M+ patient records. • Designed and maintained scalable Java-based microservices; led production monitoring, incident investigation, root-cause analysis and preventive fixes with product, DevOps and QA teams. Technologies: Java | React | Perl | GraphQL | AWS (ECS, EKS) | Kubernetes | LaunchDarkly | LiteLLM | Claude Code | Codex

Senior Software Engineer at FourKites, Inc., Jun 2021 - Sep 2025 · 4 yrs 4 mos, Chennai, • Designed and developed scalable backend microservices for the Order Intelligence Suite, increasing customer capacity by 50%+, from approximately 1,000 to 1,500+ concurrent users. • Resolved 100+ critical production issues, optimized database queries by 35% and contributed to achieving 99.95% system uptime. • Led development of an Order Dashboard using Elasticsearch aggregation and AntChart, improving data retrieval speed by 70% and reducing manual reporting effort by 40%. • Enabled 50+ customers to identify order trends faster and respond to operational challenges in under two minutes through real-time analytics. • Led migration of order-visibility services to Microsoft Azure, maintaining 99.9% uptime, reducing infrastructure costs by 25% and scaling services to support 2× traffic growth. • Implemented Azure Key Vault across 10+ services, reducing exposure risk by 90% and lowering overall vulnerabilities by 30%. • Served as PR Reviewer and Architecture Advisor, reviewing 50+ pull requests monthly and contributing to the architecture of 3+ new services, improving team productivity by 20%. Technologies: Java | Spring Boot | Microservices | Elasticsearch | Azure | Azure Key Vault | Jenkins | Apache Kafka | MongoDB

Senior Software Engineer at Infibeam Avenues Limited, Jun 2019 - Jun 2021 · 2 yrs 1 mo, • Drove expansion and optimization of the Government e-Marketplace (GeM) platform serving 50,000+ government departments, PSUs and organizations. • Collaborated across 7+ cross-functional teams to automate order processing, reducing manual intervention by 60% and improving operational efficiency by 35%. • Implemented Apache Solr multi-node replication for a catalog exceeding 1M items, reducing search response time from approximately 2 seconds to under 1 second. • Optimized indexing and retrieval, effectively doubling search performance and scalability. Technologies: Ruby on Rails | Apache Solr | MySQL | REST APIs.

Software Engineer at Infibeam Avenues Limited, May 2016 - Jun 2019 · 3 yrs 2 mos, • Redesigned the Return Merchandise Authorization (RMA) workflow, strengthening fraud detection and improving accuracy by 50%. • Optimized bulk-order processing using a Divide and Conquer algorithm, eliminating timeout-related crashes by 100%. Technologies: Ruby on Rails | MySQL | AngularJS.

Software Engineer Intern at Infibeam Avenues Limited, Dec 2015 - Apr 2016 · 5 mos, • Designed and developed DutyKnocks, a web-based incident-management platform supporting real-time alerting and issue resolution. • Implemented multi-channel email, SMS and phone alerts, enabling faster IT incident response and reducing server downtime.

Education

Master of Computer Applications, Computer Science, PSG College of Technology