Ruby on Rails Full-Stack Developer (React, Swift, Kotlin required)

Role Overview

We are seeking a Senior Full-Stack / Mobile Engineer to take end-to-end technical ownership of an established multi-platform product.

This is a high-impact role with significant autonomy, where you will:

• Take over and deeply understand an existing multi-platform codebase
• Ensure long-term stability and maintainability
• Incrementally improve architecture, scalability, and performance
• Actively contribute to new feature development

As the team grows, this role is expected to naturally evolve into a Team Lead position.

You will work closely with product stakeholders and play a key role in shaping both the technical direction and future of the platform.
 

Key Responsibilities

• Take full ownership of the system across Web, Mobile (iOS & Android), and Backend
• Maintain, support, and enhance existing functionality
• Conduct code reviews and lead refactoring initiatives
• Identify, prioritize, and resolve technical debt
• Design and implement new features across multiple platforms
• Ensure system scalability, reliability, and performance
• Collaborate with stakeholders to define priorities and roadmap
• Improve engineering processes, standards, and workflows
• Gradually step into a leadership role as the team expands
   

Required Skills & Experience

• Strong hands-on experience with iOS development (Swift)
• Strong hands-on experience with Android development (Kotlin)
• Solid experience with modern web frameworks (e.g., Next.js or similar)
• Backend development experience with Ruby
• Practical experience working with AWS infrastructure
• Experience with MongoDB or similar databases
• Ability to work effectively across multiple codebases and technologies
• Strong understanding of system architecture and cross-platform integration
• Proven experience maintaining and improving legacy systems
   

Nice to Have

• Experience taking ownership of existing or legacy products
• Prior experience as a Tech Lead or readiness to grow into one
• Background in construction tech, field service platforms, or reporting tools
• Experience working in multi-platform product environments