We are seeking a (Senior) Backend Developer with expertise in Ruby-on-Rails to join our engineering team at Ablefy. You will design, build, and maintain high-quality backend components, collaborate across teams, and integrate AI-powered capabilities into our scalable SaaS platform for digital entrepreneurs.
What You'll Do
- Design, build, and maintain high-quality Ruby code using best practices.
- Work on technical feasibility assessments, developing new solutions, architecture, and process improvements.
- Build back-end components for web applications.
- Collaborate with other developers and stakeholders to understand requirements and develop solutions.
- Test applications for performance, responsiveness, and security.
- Participate at all stages of the development lifecycle.
- Maintain existing applications and make necessary updates and enhancements.
- Stay informed about relevant new technologies and drive their continuous adoption and integration into the design.
- Build and integrate AI-powered capabilities that create user and platform value.
What We're Looking For
- At least 4+ years of commercial experience with Ruby-on-Rails.
- Experience with architecture decisions and development process improvements.
- Solid understanding of object-oriented programming.
- Understanding of fundamental design principles behind a scalable application.
- Deep experience with version control systems like Git.
- You have an eye and passion for clean code.
- Problem-solving skills.
- Understanding of agile software development.
- Fluent in English.
Nice to Have
- Experience in test-driven development.
- Good understanding of CI/CD process (Circle CI, GitHub Actions).
- Hands-on experience with PostgreSQL & NoSQL databases.
- Experience in building high-load systems.
- Experience in the FinTech or e-commerce industry.
- Familiarity with prompt engineering or AI workflow tools.
- Experience working with LLMs, vector databases, or building AI agents.
Technical Stack
Ruby-on-Rails, Git, PostgreSQL, NoSQL, CI/CD, Circle CI, GitHub Actions, AI-powered capabilities, LLMs, vector databases, prompt engineering, AI agents
Team & Environment
Join an agile engineering team within a company of around 60 employees, which has doubled in size since 2021. The team focuses on scalable, user-centric software solutions and operates with a culture of collaboration, adaptability, and continuous learning.
Benefits & Compensation
- 30 vacation days
- A competitive salary
- A personal training & development budget of €1,500 per year
- Responsibility and trust from day 1
- Individual coaching and further training to support you in your development
- A free BVG ticket
- Employee discounts at numerous companies (e.g. at the gym or in online stores)
- Pension Program with company match
- A Culture of equity and Inclusion where you are appreciated for the person you are
Work Mode
Hybrid work setup based in Berlin, or fully remote within the European Union. Berlin-based candidates follow a hybrid model, while EU-based remote candidates can work fully remotely.
Discrimination based on race, religion, color, national origin, gender identity or expression, sexual orientation, age, marital status, disability status, or any other aspect that makes you unique is not tolerated at ablefy. We aim to make growth accessible to everyone!
