Full-time

Senior Backend Engineer (C++ / PHP)

Posted by Lifted, an Upwork Company • Barcelona, Catalonia, Spain

📍 Barcelona, Catalonia 🕒 February 20, 2026

About the Role

Job Description

What You’ll Be Responsible For:

  • Designing, building, and maintaining backend systems using C++ and PHP as primary technologies
  • Owning features and systems end-to-end, from architecture through production delivery
  • Solving complex technical problems independently and proactively
  • Providing daily written updates on progress, decisions, and blockers
  • Actively participating in technical and product discussions via Slack in a chat-driven environment
  • Collaborating with a small, senior team in a fully asynchronous operating model

Qualifications

Technical Requirements (Non-Negotiable):

  • Expert-level proficiency in both C++ and PHP
  • Clear commitment to C++ and PHP as long-term backend technologies (not stepping stones)
  • Demonstrated problem-solving ability, validated through a paid C++ and PHP technical challenge
  • Strong backend systems thinking (performance, relia...

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