resume ─── sultan ahmad

Sultan Ahmad

imhackax@gmail.com · hackax.space · github.com/hackax-1

Education

ICS — Intermediate with Computer Science [REDACTED]
[REDACTED]  ·  95%+ in CS subjects 2024

Experience

Streaming Infrastructure — Backend Engineer Remote
Self / Freelance 2023 – Present
  • Streaming Backend: Built high-throughput HLS stream resolution and content delivery backends in Rust/Axum with multi-tier caching — Cloudflare edge cache, Redis session store, and in-process Moka LRU cache. Stress-tested under 20k+ concurrent streamers with sub-50ms p99 latency.
  • Error Rate Reduction: Reworked retry logic and failover routing across redundant upstream sources, cutting downstream error rates. Implemented structured tracing with tracing-subscriber and Sentry panic capture to identify and close failure loops.
  • Load Balancing: Multi-node Axum deployments on Fly.io ([REDACTED]) with automatic machine scaling, health-check routing, and blue-green rollouts via Docker multi-stage builds.
Proxy & Bypass Engineering Remote
Self / Freelance 2023 – Present
  • Rotating Proxy Pipelines: Engineered async rotating IP proxy pools to bypass geo-locks and IP-rate-limits on third-party sources. Wrote a standalone proxy_scan.rs binary to validate and rank live proxies from sourced lists with concurrency-limited reqwest workers.
  • Client Fingerprint Spoofing: Built custom Axum middleware for header injection — User-Agent cycling, TLS JA3 mitigation strategies, cookie passthrough chains, and Referer spoofing. Used wreq with SOCKS5 support for per-request proxy binding.
  • Cryptographic Pipeline: Implemented ChaCha20, AES-CTR, HMAC-SHA256, and base64 encode/decode pipelines for inter-service token obfuscation and content integrity checks.
Infrastructure & Multi-Node Deployment Remote
Self / Freelance 2023 – Present
  • Multi-Node Orchestration: Manages containerised service clusters with Docker Swarm and Fly.io rolling deployments across multiple regions. Services include Postgres (SQLx migrations), Redis, Moka in-memory caches, and Cloudflare Workers for edge passthrough.
  • Microservice Management: Operates multiple independent Rust binaries behind Nginx reverse proxies with upstream failover, rate limiting, and TLS termination. Each service ships as a stripped release binary (lto=true, strip=true) in a minimal Docker image.
  • Frontend Integration: Next.js frontends deployed on Vercel, consuming Axum APIs over HTTPS with Cloudflare in front for DDoS mitigation and cache layering.
Auth System & User Account Management Remote
ReedStreams Backend 2023 – Present
  • Authentication: Full auth flows in Axum — registration, bcrypt/argon2 password hashing, JWT issuance and refresh, role-based route middleware guards. UUID v4 primary keys, chrono-stamped audit rows, compile-time checked SQLx queries against Postgres.
  • Live Viewer System: WebSocket-backed real-time viewer count tracking via DashMap shared state, with live broadcast to connected clients and Redis-backed persistent counters across node restarts.
  • Admin & Content Routing: User, profile, playlist, chat, admin, and source management route groups. Override system synced from Redis with configurable TTL for zero-downtime source switching.

Skills

LanguagesRust, JavaScript, TypeScript, SQL, Bash, HTML/CSS
Rust EcosystemTokio, Axum, Tower, SQLx, reqwest, wreq, Moka, Serde, Tracing, DashMap
InfrastructureDocker, Docker Swarm, Fly.io, Cloudflare, Nginx, Redis, Postgres
CryptographySHA-256, HMAC, AES-CTR, ChaCha20, argon2, bcrypt, JWT, base64
FrontendNext.js, React, Vite, CSS, Canvas API
ToolsKali Linux, Arch Linux, Git, Neovim, k6 load testing, Sentry

note: location & institutional details redacted for privacy. credentials available via imhackax@gmail.com.

stage ─── horse_01