Jayce JayceWright

"When you understand how a system works — you start seeing structure in everything."

`$ whoami`

name:     Jayce Wright (Azizbek Ismoilov)
role:     Backend Engineer
stack:    Java 21 · Spring Boot · PostgreSQL · Redis · Docker · k6
focus:    High-load systems, fault-tolerant APIs, distributed architectures
status:   Open to internships & full-time roles
location: Russia · Ready to relocate

I don't just write code that works — I write code that holds under pressure.
My benchmark is 1000 concurrent users, not 1.

`$ cat achievements.log`

🏆 Kod Sporta — Winner T-Bank 2026
Team Competitive Programming Contest. Team of 3. Work under pressure, won under pressure.

🏦 Backend Lead T-Bank × HSE Practicum 2026
Led a 5-person team for 10 weeks (600+ hours). Public defence before T-Bank && HSE jury.
58 PRs · 222+ commits · Full CI/CD pipeline built from scratch

⚡ 1000 VU Load Test k6 · 0 errors · 0 double-bookings
avg 250ms · p95 465ms · 0 errors 5xx · 0 race conditions

`$ cat projects/featured.md`

🎫 T-Reserve Engine

T-Bank × HSE · Production · Backend Lead

High-load ticket booking system with dual-layer race condition protection:

Layer 1 — Redis SETNX ~2ms fast-reject
999 of 1000 concurrent requests rejected before touching the database
Layer 2 — PostgreSQL SELECT FOR UPDATE NOWAIT ACID source of truth
1 winner gets the ticket. Zero double-bookings guaranteed.

SafetyNet Scheduler — auto-release expired locks every 30s via partial index scan
Graceful Degradation — Redis failure → system falls back to PG-only, stays alive
WebSocket STOMP — real-time seat map updates for all connected clients
RabbitMQ async pipeline — PDF generation → MinIO → email delivery (non-blocking)

Metric	Result
🟢 Concurrent VUs	1,000
⚡ Avg response	250ms
📊 p95 latency	465ms
❌ 5xx errors	0
🎫 Double-bookings	0
🔁 PRs merged	58

Stack: Java 21 Spring Boot 3.3 PostgreSQL 16 Redis 7 RabbitMQ Docker Nginx Prometheus Grafana k6 Testcontainers GitHub Actions

🏛️ Architecture & Engineering Highlights

`$ cat stack.json`

{
  "languages":   ["Java 21 (primary)", "Python", "SQL", "Bash"],
  "frameworks":  ["Spring Boot 3", "Spring Security", "Hibernate/JPA", "FastAPI"],
  "databases":   ["PostgreSQL 16", "Redis 7", "RabbitMQ"],
  "infra":       ["Docker", "Nginx", "GitHub Actions", "Linux", "Railway"],
  "monitoring":  ["Prometheus", "Grafana", "HikariCP metrics"],
  "testing":     ["k6", "JMeter", "JUnit 5", "Mockito", "Testcontainers"],
  "patterns":    ["Distributed Locking", "Circuit Breaker", "Graceful Degradation",
                  "State Machine", "Ports & Adapters"]
}

`$ git log --stat`

[SYSTEM ONLINE] :: Backend that survives production. Architecture that scales.

jaycewright.github.io · Built by Jayce Wright · 2026

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Jayce JayceWright

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