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Senior PHP Backend Engineer

Omnes Group

Full time Belgrade / Hybrid

Job description

We’re looking for a Senior PHP Developer to further develop while maintaining the organization of our well-structured Symfony monorepo serving enterprise clients. You’ll work with proven patterns, established architecture, defined coding standards, building features that directly impact doctors’ education and patient outcomes.

This is not a maintenance role. This is a builder’s role – an opportunity to craft elegant solutions within a thoughtful codebase, leverage AI tools daily, and contribute to a platform that helps medical professionals worldwide.

Requirements

  • Have 6+ years PHP experience and 4+ years hands-on Symfony including advanced Doctrine ORM, custom repositories, and multi-tenant SaaS architectures
  • Value elegant, clean code built for long-term maintenance over quick fixes and can keep cyclomatic complexity below 7
  • Are a systems thinker who values consistency and long-term decisions over quick patches
  • Fully capable of taking substantial features from concept to shipping as the sole programmer (alongside a designer)
  • Use AI tools daily – Claude Code, Cursor, GitHub Copilot – and sees them as creativity amplifiers

Beyond Code, You:

  • Believe that being a great team member matters just as much as writing great clean code
  • Are a clear, specific and precise communicator who avoids confusion as much as possible
  • Are easy to work with, collaborative and low ego – takes ownership without drama
  • Follow up consistently and doesn’t need reminders
  • English language fluency: You are comfortable joining calls with clients where needed
  • Have experience in growing companies (20-200+ people) that balance innovation with engineering discipline
  • Have experience mentoring and guiding mid-level developers while maintaining code quality standards

Bonus Experience (Nice to Have)

  • Experience in hardening and scaling a SaaS platform post-product-market-fit
  • Familiarity with educational platforms, content personalization, or video-based learning delivery
  • Exposure to multi-tenant SaaS environments, feature flag systems, or customer-specific configuration models

Our Current Tech Stack

Our platform runs on a hybrid multi-tenant architecture with per-tenant databases and shared infrastructure. We operate in a modern development environment where AI tools are part of daily workflow.

  • Backend: PHP 8+, Symfony 5.4+, Doctrine ORM
  • Architecture: Multi-tenant SaaS with per-tenant schemas and containers, with shared codebase
  • Infrastructure: AWS Fargate, Docker, Redis, MySQL, PostgreSQL (for analytics)
  • Development: PHPStorm, Bitbucket
  • CI/CD: TeamCity
  • Monitoring: Datadog
  • AI Tools: Claude Code, Cursor, GitHub Copilot – expected daily usage
  • Frontend: Angular 17 (you’ll focus backend, but good to understand the full picture)