I build and operate production infrastructure.

Ten years across the stack — sysadmin, cybersecurity, frontend, backend, and now agentic engineer running PrivateByte solo. Currently available for senior infrastructure, platform, or AI-solutions roles.

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Currently available

Open to remote or hybrid (UK).

Available immediately. Most interested in agentic-engineering, forward-deployed engineering, AI-solutions, or platform / infrastructure roles where the work is real systems rather than ticket throughput.

Reach me at hisham@privatebyte.com. I read every message and reply within twenty-four hours.

The arc

Ten years, five disciplines, one through-line.

My journey started as a sysadmin and moved through cybersecurity, frontend, and backend before landing on what I do now — agentic engineering, where AI is the primary collaborator rather than autocomplete. The through-line across all of it is the same: ship something real, operate it under load, learn from where it breaks.

Each chapter compounds the next. The sysadmin years made me treat production like production. The cybersecurity years made me think adversarially about every system I build. The frontend and backend years made me full-stack rather than nominally so. The agentic-engineering chapter ties it all together: I can operate a production-grade business end-to-end, solo, because every prior layer is already first-hand and fortified.

Current chapter

PrivateByte, 2024 — present.

A multi-tenant cloud infrastructure and proxy network platform serving paying customers worldwide. Every layer designed, built, and operated by one engineer over time:

  • Customer portal (Next.js + TypeScript)
  • Proxy gateway (Go) with upstream providers and intelligent routing between them
  • Crypto-payment infrastructure (Python / FastAPI) — HD wallet derivation, swap aggregation, age-encrypted vault, built from the ground up.
  • WHMCS billing integration with custom PHP hooks for the operational edges the stock product doesn't cover
  • SolusVM2 automation — hot-pool VM provisioning, sub-60-second deploys and multi-server orchestration
  • Telegram operations bot — provided a secondary surface to PrivateByte, users can operate their cloud infrastructure from the bot in isolation.
  • Incident response, on-call rotation of one, security and abuse handling, multiple P0/P1 incidents remediated within 4hrs

Solo, with AI as a primary engineering collaborator throughout.

Selected outputs from the earlier chapters: bug-bounty research and vulnerability-discovery tooling (ethical-hacking years), a macOS system monitor (frontend years), payment gateway prototypes (backend years), several AI-assisted research systems (the bridge into agentic engineering). More can be seen on LinkedIn.

What I bring
  • Genuine full-stack, by career path. I've earned every layer — sysadmin (infra), ethical hacker (security), frontend, backend, now agentic engineer. Most "full-stack" engineers have shipped two layers; I've shipped under load in five.
  • AI as a primary engineering surface. Roughly 80% of my code-shipping is driven through AI. I've written extensively about what works and what doesn't — this is a verifiable methodology, not a productivity claim.
  • Production discipline. Real incident response, GDPR Article 33 breach reporting, payment-system audits, zero-downtime infrastructure migrations, abuse and security response. The work that doesn't fit in a job description but is the difference between a service and a product.
  • Adversarial thinking, built in. The ethical-hacking years left a permanent habit of thinking about how every system I build will be attacked, abused, or misused. It changes the design at the spec stage, not the audit stage.
  • Polyglot, by necessity. TypeScript, Go, Python, PHP, Bash, Rust. Language picked per workload, not per preference. No framework loyalty.
  • Self-taught, ten years deep. No formal degree. The work I am committed to is the verification; the writing on this site is the deeper record of how it happened.
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