Airslate

Senior PHP Engineer

  • Airslate

Job Description

About your pdfFiller Team
We are a team of 120+ passionate builders shaping the future of our online PDF creator and editor — pdfFiller.
Every month, more than 10 million people rely on pdfFiller to create and edit PDFs, send documents for signing, and securely store their files — all within one intuitive platform. With unlimited storage, unlimited templates, and seamless cross-platform integration, pdfFiller is designed to help users get their work done faster and smarter.

And now we are looking for a Senior Software Engineer (PHP) to join us and play an important role in the next chapter of our product’s evolution.

This is a fully remote role open exclusively to candidates based in Poland. At this time, we’re not able to consider applicants residing in other locations.


Why this role is exciting:
  • Work on the CORE functionality of a large, high-load product used by millions worldwide.
  • Direct influence on product stability, scalability, and architectural direction.
  • A mix of challenges: backend engineering, performance optimization, internal tooling, platform integrations.
  • Close collaboration with DevOps, Security, Performance Engineering, and cross-functional product teams.
  • Opportunity to contribute to long-term architectural evolution and engineering best practices.

    • What you’ll work on:
  • Develop, maintain, and enhance CORE platform components and internal backend services.
  • Shape architectural decisions, contribute to system simplification and modernization.
  • Build secure, reliable, high-performance backend solutions.
  • Work closely with DevOps to improve CI/CD, observability, deployment workflows, and system reliability.
  • Support and elevate security initiatives, including authentication/authorization approaches (RBAC/ABAC).
  • Participate in code reviews, design discussions, and incident resolution.
  • Collaborate with cross-functional teams to enable new product capabilities built on top of the CORE platform.

    • What we Expect from you
  • 5+ years of backend engineering experience, including 3+ years with PHP
  • Strong expertise with PHP and the Laravel ecosystem
  • Solid experience with relational databases (MySQL, PostgreSQL) and distributed storage systems (e.g., Redis)
  • Understanding of secure coding principles and modern authentication/authorization approaches
  • Experience with Docker, Kubernetes, or other containerized environments
  • Background working with high-load systems or platform-level services is a strong advantage
  • English proficiency suitable for technical discussions

    • Apply Now
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