Lengow is hiring a Senior Software Developer to join the Product Experience Team, a cross-functional engineering group that owns the platform layer across all of Lengow's product suites. You will be a key contributor taking ownership of complex backend features while collaborating effectively on the frontend.

What You'll Do

Design, build, and maintain backend services and APIs in PHP/Symfony across both platforms.
Own database schema design, query optimization, and migration strategies in PostgreSQL/MariaDB.
Contribute to React-based frontends—reviewing, implementing, and improving UI features.
Collaborate on architectural decisions and participate actively in code reviews.
Operate and deploy services in a Kubernetes/GCP environment, maintaining observability with Datadog.
Work closely with product managers, designers, and peer engineers in an agile setup.
Leverage AI-assisted development tools (GitHub Copilot, Claude, Gemini) as part of your daily workflow.

What We're Looking For

Strong experience designing and building backend services and APIs with PHP/Symfony.
Proven skills in database design, optimization, and migration using PostgreSQL or MariaDB.
Ability to contribute effectively to React-based frontend codebases.
Hands-on experience operating and deploying services in a Kubernetes and GCP environment.
Excellent collaboration skills for working with cross-functional partners in an agile team.
Experience with modern observability tools and practices.

Technical Stack

Languages & Frameworks: PHP/Symfony, React
Databases: PostgreSQL, MariaDB
Infrastructure & Cloud: GCP, Kubernetes
Tools: RabbitMQ, Datadog

Team & Environment

You’ll be joining the Product Experience Team, a cross-functional engineering group based in Barcelona and Nantes. The broader Tech, Data, and Product team comprises 70+ people, while the Product Experience Team is a small, focused group of developers ranging from 4 to 8 people. You will report directly to an Engineering Manager.