Senior Software Engineer - Backend - Billing Team

Team: IT

Location: Spain

Commitment: Full-time

Workplace Type: remote

Accountabilities

• Develop, maintain, and improve backend features and services supporting the product.
• Design and implement robust backend APIs and business logic for both new and existing product capabilities.
• Build services with a strong focus on simplicity, reliability, scalability, and maintainability.
• Participate actively in code reviews, providing constructive feedback and incorporating feedback from other engineers.
• Design, test, consume, and support APIs for production web services.
• Contribute to improving the reliability, redundancy, and resilience of production infrastructure.
• Work across a diverse technology environment and identify opportunities to improve systems, processes, and engineering practices.
• Stay informed about emerging technologies and evaluate opportunities to apply them effectively within the technical environment.
• Collaborate closely with teammates and other stakeholders to deliver high-quality projects efficiently.
• Take ownership of technical challenges, analyze problems independently, and drive solutions through to completion.

Requirements:

• Strong professional experience in backend software engineering, with expertise in at least one general-purpose programming language.
• Highly proficient in database design and development, with experience working with both relational and NoSQL databases such as Scylla and Redis.
• Hands-on experience creating, testing, consuming, and supporting APIs for web services.
• Comfortable working with AWS, Linux, Docker, Kubernetes, and continuous deployment workflows.
• Ability to work effectively within a multi-language technology stack and adapt to different programming environments.
• Experience with Node.js and TypeScript or Rust is an advantage, but not required.
• Basic frontend development knowledge and an understanding of how backend and frontend systems interact.
• Experience with modern frontend frameworks is a plus.
• Strong written and verbal communication skills, with the ability to collaborate effectively in a technical team.
• Self-directed and analytical approach, with strong problem-solving abilities and a willingness to take ownership.
• Entrepreneurial and pragmatic mindset, with the ability to move quickly while maintaining high engineering standards.
• Comfortable working in small teams where individual contributors have significant responsibility and influence.

Benefits:

• Startup-style environment with a flat organizational structure.
• Opportunity to work closely with founders and experienced team members.
• Significant influence over product development and technical evolution.
• Opportunity to build technology that reaches and impacts a large global audience.
• Equity package offering an opportunity to share in the long-term success of the business.
• Access to the technology and tools needed to perform effectively.
• High degree of ownership and autonomy in your work.
• Collaborative environment where individual contributions have a meaningful impact.
• Opportunity to work on complex backend, cloud, and infrastructure challenges in a rapidly scaling product environment.