Results-oriented Full Stack Developer with 8+ years of experience building scalable, production-grade systems using C#/.NET, OneStream, Laravel/PHP, Python, Django, Next.js, and NestJS.

I specialize in designing microservices architectures, high-performance APIs, and event-driven systems using Kafka and RabbitMQ. Experienced in database design, system optimization, and leading projects in Agile environments.

Currently expanding into blockchain and Web3, with hands-on exploration of smart contracts, NFT marketplaces, and Layer 2 solutions.

I value clean architecture, efficient delivery, and long-term maintainability. Always open to meaningful collaboration and solving challenging problems.

• Master's Degree in Computer Science
  Arden University, Berlin
  Oct 2018 – Sept 2019

• Bachelor's Degree in Computer Science
  Jilin International Studies University, China
  Sept 2014 – Sept 2018

Languages:
SQL (PostgreSQL, MySQL), JavaScript (ES6, Node.js), HTML/CSS, PHP, UML, Liquid, C, C++, C#, Java, TypeScript, Python

Frameworks/Libraries:
NestJS, Laravel, Django, React, Vue, Angular, Redux, Next.js, KMP(Compose Multiplatform), Docker, Jest (unit & e2e tests), Chrome Extension, AI (IPython, YOLO), LLMs Integration (OpenAI API, Gemini)

SDKs/Libraries:
JDK, NDK, OpenCV, Luxand FaceSDK, WinDDK

Databases:
PostgreSQL, MongoDB, MySQL, AWS DynamoDB, AWS RDS

Authentication: Google OAuth2.0, Firebase, Facebook, Apple

Payment Integration: Paypal SDK, Stripe, Authroize.Net

Cache: Redis, Amazon ElastiCache, DynamoDB Accelerator (DAX)

DevOps/Tools:
Docker, Kubernetes, CI/CD(GitHub Actions), AWS, Nginx, Prisma, DrizzleORM

Cloud Platforms:
AWS (S3, EC2, RDS, Lambda, API Gateway), GCP, Azure, Firebase

Search Engines:
Elasticsearch, Apache Solr, Amazon CloudSearch

Platforms:
Microservices (Kafka, RabbitMQ, MQTT), SEO

Project Management:
Nifty, Agile, Scrum, Jira, Asana

Design/Prototyping:
Figma, UI/UX Design

Software Engineer – Platform Support (Remote)
Private Company | Sep 2025 – Present

• Worked on a Laravel Sail–based backend with AWS S3, reducing storage usage on the production environment hosted on Cloudways
• Implemented cron jobs to optimize uploaded media files
• Optimized the codebase to reduce server resource consumption (CPU and RAM)
• Added logging across all modules and generated daily reports for managers via email and a status dashboard
• Successfully integrated a third-party platform as a data source
• Built a user-friendly frontend using React and Tailwind CSS

DevOps Engineer — Cloud Infrastructure Support (Remote)
U.S.-based technology consulting firm | Jul 2024 – Sep 2025

• Automated AWS infrastructure using Pulumi + Terraform modules (VPC, EKS, API Gateway)
• Standardized reusable IaC modules + documentation for repeatable environments
• Implemented Helm workloads; improved deployments using blue/green + canary strategies
• Integrated Prometheus/Grafana + Slack alerts to reduce incident response time
• Strengthened CI/CD (GitHub Actions, CodePipeline) for build, scan, rollout/rollback
• Hardened EKS security with least-privilege access and cluster policies/standards

IoT Systems Engineer & Full Stack Developer (Hybrid)
China-based technology consulting firm | Jun 2023 – Jun 2024

• Designed microservices-based IoT hub (ZigBee/Wi-Fi/LoRa/BLE/5G) for home automation
• Built embedded systems (ESP32, Raspberry Pi, PIC) and full-stack UIs (React + NestJS/Laravel)
• Implemented edge video detection with ESP32-CAM, OpenCV, YOLOv8
• Integrated AWS IoT Core + ThingsBoard; implemented OTA updates and device analytics
• Secured MQTT/HTTPS communication with SSL/TLS and authenticated Modbus protocols

Full Stack Developer (Remote)
Confidential IT Solution Company | Sep 2020 – May 2023

• Improved backend services and code quality; increased uptime by ~20%
• Built and maintained React/Vue components; data visualization and UI improvements
• Worked in Agile teams to align frontend architecture with product requirements

Frontend Engineer (Remote)
Momofuku | Sep 2019 – Sep 2020

• Customized Shopify themes and integrated React
• Added Jest + Cypress testing pipelines; optimized performance in large React/JS codebases

Highlighted Repositories:

• Next.js Hotel Reservation System: A hotel booking platform with intuitive UI/UX designed using Figma.
• Shopify and React Integration: Enhancements and customizations to Shopify themes using React and Redux.
• IoT Home Automation Project: An IoT-based project for residential automation integrated with ThingsBoard.
• Web3 and Blockchain Development: A collection of smart contracts and Web3 tools developed using Rust.

• Email: Lucas K. Teoh
• Telegram: @black_hole_fear