Senior Full Stack Engineer (B2B - Warsaw)
Core
Build and maintain scalable, reliable backend services for Fresha's AI-powered operating system serving the global beauty, wellness, and self-care industry.
Role type
Senior Backend Engineer (Ruby/Elixir)
Builds
Microservices, event-driven systems, and AI-augmented workflows for salons, spas, and fitness studios
Domain
SaaS / Fintech / Beauty & Wellness
Deliverable
production ML models | product features
Required skills
Ruby, Elixir, GraphQL, TypeScript, gRPC, Kafka, Kubernetes, Domain-Driven Design, distributed systems, AI agent integration
Preferred skills
TypeScript, Elixir, Ruby
Technologies
Ruby, Elixir, GraphQL, TypeScript, gRPC, Kafka, Kubernetes
Responsibilities
Collaborate with cross-functional teams to take features from discovery to rollout; design and implement scalable backend code; work within a Kubernetes-driven microservice architecture; integrate AI agents into workflows while maintaining code quality
Seniority
Senior, hands-on IC
