I’m Lok Sai Vajja, an AI Infrastructure Engineer and data engineer with 3.5+ years of experience building and operating scalable AI infrastructure, LLM integrations, and cloud-based data platforms. I enjoy turning product and analytics needs into production-grade pipelines and services that improve reliability, reduce latency, and automate critical workflows. At work, I focus on end-to-end delivery—API development, observability, CI/CD, security, and managed deployments on AWS. I’ve integrated LLMs into real-world applications, designed monitoring frameworks to speed up incident response, and built robust ETL pipelines that improve cross-system data consistency and reduce recurring errors.

Lok Sai Vajja

I’m Lok Sai Vajja, an AI Infrastructure Engineer and data engineer with 3.5+ years of experience building and operating scalable AI infrastructure, LLM integrations, and cloud-based data platforms. I enjoy turning product and analytics needs into production-grade pipelines and services that improve reliability, reduce latency, and automate critical workflows. At work, I focus on end-to-end delivery—API development, observability, CI/CD, security, and managed deployments on AWS. I’ve integrated LLMs into real-world applications, designed monitoring frameworks to speed up incident response, and built robust ETL pipelines that improve cross-system data consistency and reduce recurring errors.

Available to hire

I’m Lok Sai Vajja, an AI Infrastructure Engineer and data engineer with 3.5+ years of experience building and operating scalable AI infrastructure, LLM integrations, and cloud-based data platforms. I enjoy turning product and analytics needs into production-grade pipelines and services that improve reliability, reduce latency, and automate critical workflows.

At work, I focus on end-to-end delivery—API development, observability, CI/CD, security, and managed deployments on AWS. I’ve integrated LLMs into real-world applications, designed monitoring frameworks to speed up incident response, and built robust ETL pipelines that improve cross-system data consistency and reduce recurring errors.

See more

Language

English
Advanced
Javanese
Advanced

Work Experience

AI Infrastructure Engineer at PTC
January 1, 2025 - Present
Architected observability frameworks using Python and AWS CloudWatch to monitor AI system health, reducing incident detection time by 45%. Integrated large language models into broadcast software platforms via REST APIs to automate content tagging and cut manual review workload by 30%. Deployed containerized microservices on AWS ECS, achieving 99.9% uptime for AI-driven features. Standardized API development with OpenAPI documentation to streamline integrations across five cross-functional teams. Built development harnesses and testing environments to reduce model validation cycles from weeks to three days. Implemented CI/CD with automated testing and deployment gates, reducing production deployment failures by 35%. Strengthened security and compliance through role-based access controls and audit logging, passing two major compliance reviews.
Data Engineer at Wipro
January 1, 2022 - July 31, 2023
Delivered ETL solutions for structured and semi-structured data, improving cross-system data consistency by 27% through systematic testing and reconciliation checks. Built Python-based integrations with external REST APIs to central data stores, eliminating manual data entry and reducing synchronization delays. Performed root-cause analysis on integration failures and implemented logging and alerting, reducing recurring pipeline errors by 30%. Optimized SQL queries across relational databases, improving stakeholder report-generation speed by 25%. Created reusable OOP modules to improve maintainability and reusability of transformation logic. Supported database maintenance, performance benchmarking, and documentation to enable smooth production release cycles; also contributed to project planning and story sizing for analytics requirements.

Education

Master of Science in Computer Science at California State University, San Bernardino
August 1, 2023 - May 31, 2025
Master of Science in Computer Science at California State University, San Bernardino
August 1, 2023 - May 1, 2025

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Computers & Electronics, Media & Entertainment, Professional Services