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At sofias, we are redefining how businesses adopt AI by creating intelligent agents that are ready to deploy and easy to integrate. Our mission is to make cutting-edge AI technology accessible to organizations of all sizes, enabling them to unlock new efficiencies and opportunities. As a growing startup, we are building the next generation of enterprise software for GenAI, and we want you to be part of this journey.

The Role

We are looking for an experienced Ruby on Rails developer with a strong technical background and a passion for clean, test-driven development to join our team. This role is ideal for someone who thrives in dynamic environments, enjoys building robust web applications, and wants to work on technology that is shaping the future. You will play a pivotal role in developing the backend infrastructure that powers our AI agent platform and ensures its reliability and scalability.

What You'll Do

Backend Development : Design and build scalable web applications using Ruby on Rails, following best practices and clean code principles.

Test-Driven Development : Write comprehensive test suites using RSpec, ensuring code quality and maintainability through TDD practices.

API Development : Create and maintain RESTful APIs that integrate seamlessly with our AI agents and client applications.

Database Design : Design and optimize database schemas, queries, and migrations for optimal performance.

System Integration : Build integrations between our platform and third-party services, ensuring reliable data flow and communication.

Code Review & Mentoring : Participate in code reviews and collaborate with the team to maintain high development standards.

Performance Optimization : Monitor and improve application performance, identifying bottlenecks and implementing solutions.

Strategic Collaboration : Work directly with the founding team and engineering team to shape our technical architecture and development practices.

What We're Looking For

Must-Have Skills

• 5+ years of proven experience with Ruby on Rails in production environments.
• Strong expertise in Test-Driven Development (TDD) with RSpec or similar testing frameworks.
• Solid understanding of RESTful API design and implementation.
• Experience with relational databases (PostgreSQL, MySQL) and database optimization.
• Knowledge of version control systems (Git) and collaborative development workflows.
• Problem-solving mindset with the ability to debug complex applications.
• Excellent communication skills for cross-functional collaboration.

Nice-to-Have Skills

• Experience with background job processing (Sidekiq, Resque).
• Knowledge of containerization technologies (Docker).
• Familiarity with cloud platforms (AWS, GCP, or Azure).
• Understanding of CI / CD pipelines and DevOps practices.
• Knowledge of caching strategies (Redis, Memcached).
• Experience working in startups or agile environments.
• Understanding of security best practices in web development.

What We Offer

• Competitive Salary : €40,000 gross annually.
• Impactful Work : Be part of a growing startup where your backend expertise directly enables our AI technology to scale.
• Remote Flexibility : Work from the comfort of your home with a focus on results, not hours.
• Professional Growth : Accelerate your career by working on cutting-edge AI technology with modern development practices.
• Collaborative Environment : Join a team that values innovation, learning, and collaboration.
• Strategic Involvement : Work closely with the founding team and have a say in the direction of the product and company.

Why Join Us?

If you're an experienced Ruby on Rails developer looking to work on meaningful technology, this is your opportunity to make an impact. At sofias, you'll be building the robust backend systems that power the next generation of AI agents, helping businesses unlock the potential of artificial intelligence. We value technical expertise, test-driven development, and a drive to build something extraordinary.

Ready to take the next step in your career? Let's build the future of AI together.

Seniority level

• Seniority level Mid-Senior level

Employment type

• Employment type Full-time

Job function

• Job function Engineering and Information Technology
• Industries Software Development

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