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Maciej JasiewiczPL

Experience

Commercial PHP work since around 2021 and Laravel work since June 2022, followed by responsibility for application architecture, deployment, security and production reliability. Freelance work runs alongside employed roles.

  1. ONEXO.pl

    – Present

    Remote

    Tech Lead & Web Systems Architect

    Requirements, architecture and delivery for client web systems

    I lead technical delivery and remain hands-on with PHP/Laravel implementation and infrastructure. My scope covers requirements, architecture, deployment, security and maintenance.

    • Review other developers’ code for correctness, maintainability and security before it reaches production.
    • Use AI-assisted tools for implementation and test generation within project data-handling constraints; architecture decisions, code review and production approval remain under human control.
    • PHP
    • Laravel
    • Linux
    • Docker
    • CI/CD

  2. Freelance

    – Present

    Poland and abroad

    Alongside

    Software engineer

    Part-time Laravel delivery, infrastructure and security

    Since around 2021 I have completed 14+ commercial projects for Polish and international clients as part-time engagements alongside employed roles. The work covers Laravel backends, integrations, deployment, infrastructure and security.

    • Containerised delivery with multi-stage Docker builds, shipped through GitHub Actions or GitLab CI.
    • Ran production K3s with Helm, Ingress and RBAC, and worked hands-on with AWS and Cloudflare.
    • Laravel
    • Docker
    • CI/CD
    • K3s
    • AWS

  3. WEBERRY

    Jul 2023 – Nov 2024 · Rojewo, Poland · two roles

    1. –

      Full Stack Developer & Linux Administrator

      PHP application development and Linux administration

      I built and maintained PHP/PostgreSQL applications and administered the Linux hosts that ran them. The role included deployment, hardening, monitoring and production troubleshooting.

      • Added Redis caching to take load off the database, and handled operational security, monitoring and vulnerability remediation on production systems.
      • PHP
      • PostgreSQL
      • Redis
      • Linux

    2. –

      Software Engineer / Technical Lead

      Application architecture, backend performance and production reliability

      I was responsible for application architecture, backend performance and production reliability in a small delivery team. I reviewed changes from other developers and maintained infrastructure serving client sites.

      • Designed and maintained high-availability infrastructure that reduced unexpected service interruptions for client sites.
      • Implemented edge caching to reduce origin load and improve behaviour during traffic peaks.
      • PHP
      • Linux
      • High availability
      • Edge caching

  4. ConnectTo Event Solutions

    –

    Warsaw, Poland

    Junior Full-Stack Developer

    Laravel 7 event-registration systems

    I worked in a three-developer team on Laravel 7 and MariaDB event-registration systems covering attendee registration, ticketing, QR codes, mailing and organiser administration.

    • Supported manual Git-based production deployments, including conflict resolution on the live system.
    • Laravel 7
    • PHP
    • MariaDB
    • Sass

Related: selected work and technologies.