Jack Le
Building distributed systems handling millions of users — from real-time multiplayer platforms to AI-native products.
CTO & Technical Architect
CTO / Head of Engineering with 15+ years of experience building and scaling high-performance systems across telecom, SaaS, gaming, Web3, and AgriTech domains.
Proven track record of architecting and delivering distributed systems handling millions of users, including real-time multiplayer platforms, large-scale data systems, and cloud-native infrastructures. Known for a builder mindset — reverse engineering complex systems, designing custom infrastructure, and leveraging AI to significantly accelerate development velocity.
Career in Numbers
Key metrics from 15+ years of building and scaling technology.
Domain Experience Distribution
Professional Journey
From writing high-performance C/C++ at a 300-engineer division to leading technology strategy as CTO.
Principal Engineer (Independent)
Designed and built multiple production-grade platforms across domains (AgriTech, marketplaces, automation tools).
- Developed multi-tenant farm management system managing dozens of farms, each with thousands of ponds and hundreds of operational features
- Built real-time bidding platform "Kèo Thơm" for trading ornamental fish and plants, enabling live auction workflows
- Created Cortex Hub — AI platform to streamline development workflows, improve collaboration, context sharing, and efficiency with AI systems
- Developed automation plugins and tools (Zalox integration) to support bot systems and platform extensibility
- Actively researched and applied AI across development workflows: advanced AI coding platforms (Copilot, GPT-based tools) and built internal tooling to enhance team productivity
Chief Technology Officer (CTO)
Led architecture and development of a large-scale AgriTech platform managing thousands of hectares of agricultural production.
- Designed big data pipelines processing millions of data points from farming operations, enabling real-time monitoring and analytics
- Built distributed systems for crop lifecycle management, supply chain traceability (export compliance), and real-time operational dashboards
- Delivered data-driven insights to improve productivity, yield, and operational efficiency across large-scale farming operations
- Ensured system scalability and reliability under continuous data growth and real-time processing requirements
Chief Technology Officer (CTO)
Founded and led a high-performance team building a cross-platform 3D multiplayer game (Unity/WebGL) integrated with Web3 systems.
- Architected distributed real-time backend supporting millions of users with dynamically scalable micro-clusters (~20 players/room)
- Designed custom TCP networking layer optimized for low-latency real-time gameplay, eliminating dependency on third-party services (Photon)
- Built microservices architecture: gRPC, Kafka event streaming, Redis real-time state — full cloud-native on Kubernetes (HPA/VPA) with CI/CD
- Designed transparent on-chain/off-chain economy with Web3 token model, ensuring fairness and auditability
- Led full product lifecycle: system architecture, game design, economic balancing, and observability stack (monitoring, logging, metrics)
Senior Software Engineer
Contributed to building a world-class SaaS product in the deal management and data room domain, following top-tier engineering practices.
- Worked in a high-performing engineering culture with strong emphasis on clean code, testing, maintainability, and CI/CD with modern DevOps practices
- Gained deep product engineering mindset, transitioning from outsourcing to building high-quality, user-centric software
- Collaborated closely with cross-functional teams to deliver features aligned with business value and customer needs
- Contributed to scalable system design and product quality at enterprise SaaS scale
Technical Architect / Senior Software Engineer
Progressed from Senior Engineer to Technical Architect, leading multiple large-scale projects across telecom and enterprise domains.
- Technical Architect for DG1 division (~300 engineers) — responsible for system architecture, technical direction, and mentoring teams
- Delivered solutions for global telecom clients across Windows, Linux, and Solaris platforms
- Designed high-performance, multi-threaded systems in C/C++ focusing on scalability, stability, and cross-platform compatibility
- Led system porting: Windows → Linux (RedHat, SUSE), 32-bit → 64-bit (including driver-level components)
- Onsite internationally: USA (2×, 6 months each), UK, Australia (2×) — collaborating directly with customers and resolving production issues
Things I've Built
Two decades of shipping products — from game servers and crypto platforms to AI-powered agriculture tech and creative developer tools.
Shrimp Farm Platform
End-to-end SaaS platform for smart shrimp farming — real-time monitoring, AI-powered camera detection, water quality analytics, and multi-farm management for commercial aquaculture operations.
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Cortex Hub
Unified AI platform for multi-provider LLM management — project workspaces, conversation memory (mem0), provider configuration, and intelligent routing across OpenAI, Gemini, Anthropic, and local models.
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English 4Kids
Interactive learning platform for children — gamified vocabulary with flashcards, AI-powered hand gesture recognition, progress tracking, and engaging animations designed for young learners.
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Kèo Thơm
Social marketplace for exclusive group-buy deals. Real-time auction bidding, integrated wallet with frozen funds, seller verification, and automated payout system.
→Game Server Infrastructure
High-performance MMO game server cluster handling 5,000+ concurrent players with real-time state synchronization, matchmaking, and anti-cheat systems.
→Shrimp Scanner
Mobile-first ML species classification — real-time on-device detection with TFLite, Gemini AI cloud fallback, and species database management.
→Enterprise Platforms
Led architecture design for multiple enterprise-grade applications — ERP systems, logistics platforms, and e-commerce solutions serving 100K+ users.
→Core Expertise
Deep technical knowledge across architecture, cloud, data systems, and specialized domains.
Architecture & Systems
Cloud & Infrastructure
Data & Backend
Specialized Domains
Engineering Principles
Notable Milestones
Highlights from a career dedicated to pushing technical boundaries.
VS Extension Contest Winner
CodeProject Visual Studio Extension Contest
First Vietnamese — ProjectEuler
First Vietnamese to solve 300+ problems on ProjectEuler.net
Products at Scale
Built products reaching 100,000+ users and downloads
Systems for Millions
Designed and operated systems handling millions of concurrent users
Deep Tech & R&D
Beyond product engineering — low-level hacking, protocol reconstruction, and system internals.
Reverse Engineering
Reverse engineered 3D online game at assembly level (ASM). Reconstructed client-server protocols and internal systems.
Custom Multiplayer Server
Built from scratch: 2000+ CCU per instance with real-time synchronization. Custom networking layer optimized for low latency.
System Internals
Deep expertise in networking protocols, concurrency & performance optimization, system internals across Windows/Linux/Solaris.
Blockchain & Web3
Blockchain & crypto market analysis. Web3 automation systems, token economics, anti-exploit mechanisms.
Let's Build Something
Together.
Got an idea, a project, or just want to say hi? I'm always open to interesting conversations and collaborations.