“Let’s solve hard backend problems together — the kind that keep your engineers up at night.”
👋 Who I Am
I am Lê Tuấn Anh (vesviet), a Senior Go Backend Architect and Distributed Systems Engineer with 17+ years of production experience. I have led the migration of a decade-old Magento monolith into a 21-service Go microservices ecosystem at zero downtime, designed APIs handling 25M+ requests/month at peak 8,000 RPS, and reduced p95 latency from 1.2s to 120ms through architecture and caching strategy.
I work with teams that need:
- Deep backend architecture expertise they cannot hire full-time
- An experienced engineer to guide critical migrations or scale decisions
- Honest technical review of a system under pressure
🎯 What I Can Help With
Microservices Architecture & Migration
- Strangler Fig migrations from PHP/Magento/Laravel monoliths to Go microservices
- Distributed data consistency: Dapr Pub/Sub, Transactional Outbox, Saga orchestration
- Service mesh design, gRPC/REST API gateway patterns
- Zero-downtime bidirectional data synchronization strategies
High-Traffic Platform Reliability
- Backend architecture for flash sales, peak-event traffic (8,000+ RPS)
- Database optimization: PostgreSQL sharding, Redis caching strategies, Elasticsearch indexing
- Kubernetes cluster design (EKS/K3s), horizontal scaling, and OOM/CPU profiling in production
- Goroutine leak detection, Go pprof memory and CPU profiling
GitOps & Developer Platform
- ArgoCD GitOps pipeline design for multi-service Kubernetes deployments
- CI/CD pipeline automation for Go microservices
- Secrets management, Helm chart design, and cluster upgrade strategies
Technical Architecture Review
- System design review and ADR writing
- Code review for Go microservices, performance bottleneck identification
- Architecture readiness assessment before major scaling events
💼 Recent Work (Selected)
| Project | Scope | Outcome |
|---|---|---|
| Lotte Innovate / Vigo Retail (2021–Present) | Monolith → 21 Go services, B2B/B2C Commerce | Zero-downtime migration, 40% checkout throughput improvement |
| SnapMart & ICM (2019–2021) | Magento 2 backend, Flutter mobile APIs | Payment gateway, fulfillment routing, warehouse scanner integrations |
| Composable Commerce Architecture | Open-source 21-service Go ecosystem | Dapr Pub/Sub + Outbox + Saga in production-grade Go |
View my full profile → | GitHub Portfolio →
🤝 Engagement Types
| Type | Description | Duration |
|---|---|---|
| Architecture Review | Deep review of your current system, migration plan, or scaling strategy | 1–2 weeks |
| Advisory Retainer | Ongoing technical guidance for your engineering team | Monthly |
| Hands-On Consulting | Direct implementation or lead engineering on a specific problem | Project-based |
| Workshop / Talk | System design deep dives, Go microservices best practices for your team | 0.5–1 day |
📍 Location & Availability
- Based in: Vietnam (UTC+7)
- Remote: Yes — globally available
- On-site: Vietnam and Southeast Asia
- Languages: Vietnamese (native), English (professional)
📫 Let’s Talk
The best starting point is a short conversation about your problem. No long forms.
- Email: vesviet@gmail.com
- LinkedIn: linkedin.com/in/vesviet
- GitHub: github.com/vesviet
I read every message and respond within 48 hours on business days.