Senior Full-Stack Engineer (Ruby + AWS)

About You

You are a senior-level Full-Stack Engineer with deep Ruby on Rails expertise and strong backend fundamentals. You take ownership of complex systems, are comfortable making architectural decisions, and can contribute across the stack when needed. You value clean design, operational excellence, and long-term maintainability, and you enjoy mentoring other engineers while delivering business-critical solutions.

You Bring to Applaudo the Following Competencies:

• Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience.
• 8+ years of professional experience as a Full-Stack Engineer in production environments.
• Strong, hands-on experience building and scaling applications with Ruby on Rails.
• Professional experience working with Java (Spring Boot) and/or React in real-world applications.
• Proven experience designing, deploying, and scaling microservices on AWS.
• Solid understanding of cloud-native architectures, including compute, storage, and messaging services (EC2, S3, SQS, SNS).
• Experience designing and consuming event-driven systems.
• Strong experience with relational databases, particularly MySQL, including schema design and performance optimization.
• Hands-on experience working with Docker and Kubernetes in production environments.
• Experience contributing to CI/CD pipelines and applying observability and monitoring best practices.
• Demonstrated ability to mentor engineers and participate in technical decision-making.
• Pragmatic mindset with the ability to balance delivery speed, quality, and long-term system maintainability.
• Kubernetes certification (nice to have).
• Advanced English proficiency (B2+), able to work with global stakeholders.

You Will Be Accountable for the Following Responsibilities:

• Design, build, and maintain backend microservices primarily using Ruby on Rails, with focus on scalability, reliability, and performance.
• Contribute to Java-based services when needed to support the broader platform.
• Define service boundaries, API contracts, and integration patterns across distributed systems.
• Design and evolve MySQL data models to support growing data volumes and traffic.
• Implement and maintain event-driven workflows to enable asynchronous and resilient processing.
• Improve and maintain AWS infrastructure, including compute, messaging, and storage services.
• Drive improvements to Docker and Kubernetes environments, including deployment strategies and runtime configurations.
• Contribute to and enhance CI/CD pipelines to ensure fast, reliable, and secure delivery.
• Build and maintain frontend features using React when needed, ensuring performance, accessibility, and usability.
• Collaborate closely with product and design teams to implement consistent UI patterns and components.
• Provide technical leadership through code reviews, design discussions, and mentoring of other engineers.
• Identify and lead initiatives to reduce technical debt and improve system reliability and developer productivity.

• 8+ years of experience as a Full-Stack Engineer.
• Deep expertise in Ruby on Rails
• Hands-on experience with AWS in production environments.
• Experience working with microservices and cloud-native architectures.

About Us

At Applaudo, we partner with ambitious companies to transform through technology with an AI-native mindset at the core of how we think, build, and deliver. We combine strategic clarity, world-class execution, and modern engineering practices to help clients accelerate measurable business outcomes and stay competitive.

We are building a high-performance culture grounded in five values: Empowering Excellence, Collaborative Teamwork, Unsolicited Respect, Consistent Transparency, and Efficient Communication. These define how we work, how we make decisions, and how we hold ourselves accountable.

Applaudo is a place for people who want to grow fast, take ownership, and work alongside strong teams. Joining us means being part of an organization that is evolving intentionally, investing in modern ways of working, and embracing AI as a lever for productivity, innovation, and impact.