• Designed contract lifecycle API with 50+ RESTful endpoints handling 50K+ requests/day, implementing validation schemas, error handling middleware, and standardized response patterns across 3 business divisions

• Architected multi-Lambda event pipeline with AWS SQS for bi-directional sync between legacy DB2 and PostgreSQL, processing 2K+ messages/day with automated billing workflows

• Led Aurora PostgreSQL v13→v16 migration via blue-green deployment with 30-second downtime, saving $10.5K/year while mentoring team on zero-downtime database strategies

• Diagnosed production connection leaks via pg_stat_activity and implemented RDS Proxy pooling, reducing active connections 84% (350+ to 31) and saving $2.9K/year

• Led platform modernization from legacy Java/DB2 to Node.js, TypeScript, and PostgreSQL, serving 5K+ dealers processing 15K+ transactions/month across Construction, Forestry, and Ag & Turf

• Implemented Redis caching for high-frequency queries and singleton Databricks/EDL client pattern, eliminating per-query connection overhead across 16 service integrations

• Owned cloud infrastructure using Terraform IaC (RDS, Lambda, SQS, Secrets Manager) and CI/CD with GitHub Actions, enabling daily deployments vs. previous bi-weekly releases

• Implemented feature flag system enabling gradual rollouts, environment-specific configs, and instant rollback capabilities, reducing deployment risk across production releases

• Achieved 90%+ test coverage with Jest and Puppeteer E2E automation, reducing production incidents and establishing backend testing standards adopted team-wide

• Built Dead Letter Queue monitoring with automated Teams alerting, improving incident response time across all async message workflows

• Overtime: Architected enterprise AI chat platform with real-time LLM streaming via SSE, achieving sub-200ms time-to-first-token with InfluxDB metrics for cost analytics

• Collaborated on 3-engineer team through full SDLC—contributing to technical architecture decisions, conducting code reviews, and coordinating sprint planning—delivering 100% of milestones on schedule

• Built React CRM dashboard for cryptocurrency trading platform, featuring real-time portfolio tracking,

transaction history with infinite scroll, and responsive data visualizations using Chart.js

• Architected data migration pipeline from Neo4j graph database to PostgreSQL with custom ETL scripts, enabling unified reporting and reducing complex query times by 40%

• Designed and implemented RESTful microservices with comprehensive input validation, error handling middleware, and OpenAPI documentation, improving API reliability and developer onboarding

• Built CI/CD pipelines with GitHub Actions featuring automated testing, linting, and staged deployments, reducing release cycle time by 30% and deployment failures by 50%