BHBahdan Hal Backend Engineer
BACKEND ENGINEER · GDAŃSK

I build systems
that stay useful.

I’m a backend engineer with more than five years of experience modernising PHP applications, operating Linux infrastructure, and shipping practical AI integrations. I like clear systems, measured trade-offs, and software that survives contact with production.

Bahdan Hal
Gdańsk, Poland PHP · Symfony · Laravel Linux · Docker · AI 5+ years in software
01

Backend systems

Symfony and Laravel applications, legacy migrations, data-heavy workflows, APIs, integrations, queues, and the unglamorous reliability work that keeps them running.

02

Practical infrastructure

Docker, Linux hardening, migrations to cost-effective VPS and bare metal, mail deliverability, incident recovery, and production debugging.

03

AI with a job to do

Model integrations and agent tooling where they solve a concrete problem: content workflows, internal tools, structured research, and developer productivity.

SELECTED EXPERIENCE

Recent work

  • Freedom Mobile

    Backend development and internal agent tooling for a telecommunications platform, including integrations, stability work, and difficult production defects.

  • Gdańskie Wydawnictwo Oświatowe

    Modernised Symfony and Laravel systems used by millions, built editorial and education tools, and integrated generative and vision models into real workflows.

  • Independent consulting

    Linux security, migrations, SMTP deliverability, API integrations, and focused backend work for clients running real systems on practical budgets.

Bahdan Hal on a mountain summit
RESILIENCE & PREPARATION

Calm in production, whatever the scale.

Whether on the trail or in backend architecture, what matters is thorough preparation, simplicity, and resilience under pressure.

FAQ

Frequently asked questions

What backend stack and technologies do you specialise in?

My focus is PHP (Symfony, Laravel), PostgreSQL, MySQL, Redis, Linux systems, Docker containerisation, and deterministic or agentic AI integrations.

What collaboration models and projects do you take on?

I work on backend architecture, legacy migrations, API development, performance optimization, and independent consulting on B2B terms.

CONTACT

Have an interesting challenge?