DEBRAJ MAITY

Senior Principal Engineer | Technical Leadership | Distributed Systems | Gen AI
Newark, CA 94560 | 📞 972-975-0486 | ✉️ debrajmaity@gmail.com
🔗 LinkedIn | 📝 Blog
Professional Summary
Senior Principal Engineer with 15+ years of experience leading high-impact projects in cybersecurity, AI, video platforms, and ad-tech. Expert in architecting scalable distributed systems, Gen AI solutions, and agentic coding workflows. Proven track record of driving technical initiatives from concept to production through pragmatic system design, extreme ownership, and cross-functional collaboration. AWS certified with deep expertise in databases, microservices architecture, and building production-grade software that scales.
Technical Skills
AI & Emerging Tech: Agentic Coding (Claude Code, Gemini CLI, Cursor), Model Context Protocol (MCP), AI Prompts, LLMs (Claude Sonnet, OpenAI o3, Llama 3.2, Mixtral), Gen AI Stack
Languages: Java, TypeScript, Python, Golang, Rust, JavaScript, C/C++, Shell Script, Perl, PHP (Polyglot)
Databases: MySQL/MariaDB, PostgreSQL, Elasticsearch, OpenSearch, Redis, Cassandra, Riak, Time-series DB, Vitess DB
Cloud & DevOps: AWS (EC2, EKS, S3, RDS, CloudWatch, Lambda, Bedrock, Elasticache), Azure, Kubernetes, Docker, Terraform, Ansible, Jenkins, Harness
Frameworks & Tools: NestJS, Spring Boot, Dropwizard, go-gin, Kafka, NATS, gRPC, REST, WebSocket, Splunk, Prometheus, ELK Stack
Architecture: Microservices, Event-Driven Design, Data Pipelines/ETL, API Design, Test-Driven Development (TDD)
Professional Experience
Bolster AI | Santa Clara, CA
Senior Principal Engineer | October 2025 - Present
  • Leading multiple AI-enabled engineering projects to build next-generation Bolster AI products
  • Driving architectural decisions and feature development using agentic coding tools (Claude Code, Cursor)
  • Tech stack: Python, TypeScript, Golang, Rust, Elasticsearch, PostgreSQL, AWS, Azure, OpenAI
Bolster AI | Santa Clara, CA
Principal Engineer | January 2024 - September 2025
  • Architected and tech-led AI-based email security product, increasing SOC workflow efficiency using agentic AI
  • Managed teams through technical leadership and architectural ownership without direct reports
  • Led POCs, sprint planning, feature implementation, code optimization/reviews, and mentorship
  • Built next-generation products using Gen AI across backend and infrastructure layers
Proofpoint Inc | Sunnyvale, CA
Staff Software Engineer | January 2022 - January 2024
  • Tech Lead for Threat Intelligence and Insights Platform, processing millions of email data points into actionable threat insights
  • Built scalable database-as-a-service using Vitess DB and Kubernetes; automated deployments via Harness CD pipeline
  • Architected solutions for multi-sharded MySQL databases with terabytes of storage, including shard splitting and online schema migration (gh-ost)
  • Optimized SQL queries and system performance; published technical blogs: Scaling OLTP Databases and Database Shard Splitting
  • Provided mentorship and guidance to junior software engineers
Proofpoint Inc | Sunnyvale, CA
Senior Software Engineer | December 2018 - January 2022
  • Built and enhanced DASH ingestor service consuming millions of Kafka stream data points for threat detection
  • Developed next-generation insights APIs delivering malicious message forensics, campaign information, and threat metadata
  • Redesigned critical components to boost system performance, quality, resiliency, and scalability
  • Implemented centralized Redis-based rate limiting and circuit breaker solutions for enhanced fault tolerance
  • Tech stack: Java, Python, Golang, MariaDB, Elasticsearch, Kafka, Kubernetes, AWS
  • Led migration of Golang-based services to Amazon EKS cluster with service discovery using Consul
  • Implemented auto-scaling functionality using Kubernetes go-client based on custom metrics
  • Explored ALB, ASG, and Packer for AMI-based scaling with Ansible/Bash provisioning
Ooyala Inc | Frisco, TX
Software Engineer | June 2015 - May 2018
  • Spearheaded Next-Gen Live/SPS Platform initiative using Golang/Java microservices, Docker, and Kubernetes
  • Built DNS service as Golang-based Dockerized microservice and resilient DNS provider
  • Created scalable, fault-tolerant Kafka consumer microservice using Spring Boot, Kafka Connect, and Elasticsearch
  • Conducted latency benchmarks for handling 30+ million records and optimized pod requirements for peak loads
  • Developed high-performance search indexer pipeline using CDC tool Maxwell, Kafka, and Elasticsearch
  • Ad-Tech Auction Engine: Implemented core bidding logic and OpenRTB 2.3 protocol for SSP with <100ms latency
  • Built data flow pipeline using Amazon Kinesis for real-time log processing with log4j2 async logger and LMAX Disruptor
  • Developed microservice for periodic JSON data loading from external APIs with caching for faster processing
  • Implemented asynchronous queue and batch handler for concurrent message processing using Java concurrency
  • Added comprehensive test automation (TestNG), instrumentation (Codahale metrics), and Datadog monitoring
Earlier Experience
Nike (via Themesoft Inc) | Cloud Performance Engineer | April 2015 - May 2015
Assessed non-functional performance aspects of cloud applications to identify bottlenecks and optimize throughput, error rates, and AWS costs using Gatling, New Relic, and Splunk
Inmers LLC | Software Engineer Intern | May 2013 - December 2014
Full-stack development on Health2me, a HIPAA-compliant telemedicine platform using PHP, Java, JavaScript, and AWS
Infosys Inc | Technology Analyst | May 2010 - July 2012
Offshore tech lead for Lexis Nexis; developed XML transformation tools using Java, Perl, and Oracle DB
Wipro Technologies | Project Engineer | December 2007 - May 2010
Developed Push SDK for Avaya VOIP phones using Core Java, Java Sockets, and Java Media Framework
Education
University of Texas at Dallas | MS, Computer Science | 2012 - 2014
University of Pune, India | BE, Electronics and Telecommunication | 2003 - 2007
Certifications
AWS Database Specialty | AWS Developer Associate | HackerRank SQL | Proofpoint AI/ML Introduction | AI For Everyone | Preventing Workplace Harassment
Honors & Awards
Customer Delight Award (Proofpoint) • 2nd Place Ooyala Dallas Hackathon • Above and Beyond Award (Infosys) • Beyond the Call of Duty Award • On The Spot Award • Certificate of Excellence