Senior Full Stack Engineer (Flutter & Backend)

About the role

We are a fast‑growing SaaS company dedicated to modernising the restoration industry. Backed by Y Combinator and recognised as a top start‑up, we are expanding rapidly and need a Senior Full Stack Engineer to own mobile features from UI to backend while mentoring the team.

Key responsibilities

• Lead the development and architecture of Flutter applications for iOS and Android.
• Design, build, and maintain scalable backend services using .NET or comparable frameworks.
• Create and manage RESTful APIs, GraphQL endpoints, and database models supporting mobile and web clients.
• Collaborate with product managers and designers to deliver seamless user experiences.
• Optimise performance, implement smooth animations, and integrate third‑party APIs and cloud services.
• Establish CI/CD pipelines for both mobile and backend systems.
• Mentor junior developers and define best practices for Flutter, mobile engineering, and API development.
• Participate in architectural decisions, code reviews, and technical strategy discussions.

Required profile

• 5+ years of professional mobile development experience, including 3+ years building apps with Flutter/Dart.
• 3+ years of backend development experience with at least one of Java.NET, Python, or Ruby on Rails.
• Strong understanding of mobile design principles, state‑management patterns, and platform‑specific challenges.
• Experience creating and integrating RESTful APIs, Firebase, GraphQL, or similar services.
• Familiarity with SQL and NoSQL databases such as PostgreSQL, MongoDB, and Firestore.
• Exposure to CI/CD pipelines (GitHub Actions, Bitrise, Codemagic) and cloud environments (Azure, AWS, GCP).
• Excellent collaboration skills and a passion for end‑to‑end user experiences.

Required skills

• Flutter
• Dart
• .NET
• C#
• Java
• Python
• Ruby on Rails
• RESTful APIs
• GraphQL
• SQL
• NoSQL
• PostgreSQL
• MongoDB
• Firestore
• CI/CD
• GitHub Actions
• Bitrise
• Codemagic
• Azure
• AWS
• GCP
• Provider
• Riverpod
• Bloc
• Firebase

What we offer

• Purpose‑driven environment with high energy and rapid growth.
• Opportunity to shape the mobile strategy of a market‑leading SaaS platform.
• Mentorship responsibilities and influence over technical direction.