tbui324

Architected Karcher's IoT platform ecosystem, including device sensors, gateways, aggregators, and IoT cloud services for data ingestion, device provisioning, analytics, and orchestration, enhancing data ingestion and device provisioning efficiency. Integrated key system functionalities using Go (Fiber), AWS, Kubernetes, and PostgreSQL, improving system interoperability and reducing latency by 50%. Orchestrated the implementation of an S3 Backup and Disaster Recovery strategy, reducing recovery time objective (RTO) from 24 hours to 2 hours. Established an API backend hosting solution on AWS ECS Fargate, Copilot, and CloudFormation, streamlining resource provisioning and management. Collaborated with the DevOps team to implement global infrastructure provisioning and configuration management using AWS CDK and Terraform, reducing provisioning time by 50%.

Developed multiple ETL pipelines using Airflow, Kafka, and Python for the WorkPacks Borneo construction platform. Led the creation and optimization of core data models and high-performance, low-latency APIs, delivering single-page applications using React and Golang (Fiber, GORM)/API gateway, reducing page load times by 60%. Implemented scalable AWS security controls at the edge, including CloudFront, ALB, and WAF, with curated Web ACLs comprising OWASP protections, ensuring secure operations. Integrated CI/CD into data pipelines and built automated tools for infrastructure provisioning using Jenkins and Drone, reducing deployment times by 70%.

Revamped the UI and app interface for a healthcare site with 120,000+ unique visitors per month, boosting user engagement by 35%. Developed and launched health tools apps for type 1 diabetes and COVID-19 using React, NextJS, WebPack, and styled-components. Designed APIs for 10+ new features in health provider systems (HPS) and health monitoring systems (HMS) using Golang (Gin, Gorilla Mux) and Redis caching, enhancing system performance and reliability. Identified and resolved performance bottlenecks in EHR applications, databases, and infrastructure, improving response times for critical tasks by 45%.

Led a team of 7 software engineers to develop a smart card management platform for businesses and financial institutions, handling 10,000 orders/min during high-traffic flash sales. Engineered a backend system for exchanging contact information and streaming media storage using Golang (Gorilla Mux), Firebase, and MongoDB, optimizing capacity to handle high-volume transactions. Ensured data safety with backups, replication, and infrastructure security, achieving PCI DSS compliance. Mentored a support team of 4 junior developers, improving code quality by 35% and team productivity by 15%. Designed and implemented a Bitcoin bridge using multi-sig and HD wallet structures, ensuring secure and efficient cross-chain transactions. Maintained and created APIs for market makers, optimized the indexer pipeline for exchange, achieving a 40% increase in performance and delivering various features such as conditional orders and historical orders. Architected and built scalable microservices for the revamped Aggregator, handling high transaction volumes and user activity using Golang, GRPC Protobuf, and Hyperledger Fabric SDK. Identified and resolved performance bottlenecks, reducing processing time for handling 50-event blocks from over 4 minutes to 3 seconds by implementing a manual nonce manager.

Software Engineer + Customer service for Atlassian CX Project

Developing web application for hotel management