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F6S

Senior Engineer, Python, PHP

F6S

Senior Engineer leading development of AI-first products and services for F6S. Working with modern AI architecture and collaborating with diverse teams in a fully remote role.

Posted 6/12/2026full-timeRemote • 🇷🇴 RomaniaSeniorWebsite

Tech Stack

Tools & technologies
PHPPython

About the role

Key responsibilities & impact
  • Build products that scale and win in an AI-first development environment
  • Write code in Python or PHP
  • Have ownership of systems, make key technical decisions and lead feature development
  • Leverage AI coding (Cursor, Claude, Codex, etc.) with MCP tooling
  • Define technical work in specification review to proactively assess feasibility, technical trade-offs, and project complexity
  • Collaborate with design and product team members

Requirements

What you’ll need
  • 7+ years of professional software engineering experience
  • Deep expertise in system architecture, design patterns, and high-level programming proficiency in either Python or PHP
  • Senior-level contributor with end-to-end accountability for features and deliverables
  • Experience with AI tools (Cursor, Claude, Codex, etc.) and modern AI infrastructure or agentic concepts (MCP, etc.)
  • Can balance rapid MVP shipping with clean, organized, and reusable code standards
  • Self-motivated, independent problem solver
  • Experience with AI observability and orchestration tools (e.g., LangSmith, LogFire, Arize, OpenLIT) is a plus
  • Experience with AI agent frameworks (e.g., PydanticAI, CrewAI, SmolAgents) is a plus
  • Track record of building, monitoring, or deploying AI agents in production environments is a plus.

Benefits

Comp & perks
  • Fully remote work
  • Flexible working hours
  • Fun and rewarding environment with skill and career progression
  • Paid annual leave
  • Birthday gifts :)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
PythonPHPsystem architecturedesign patternsAI codingMCP toolingAI observability toolsorchestration toolsAI agent frameworksproduction environments
Soft Skills
ownershipleadershipcollaborationself-motivatedindependent problem solveraccountabilityclean code standardsorganizational skills