We are looking for an experienced **Senior Full\-Stack Developer** with expertise in Ruby on Rails to join our client’s engineering team. In this role, you will work within a cross\-functional Agile team to design, develop, test, and deploy scalable, high\-quality features for a SaaS multi\-tenant platform. This position offers an exciting opportunity to contribute to a dynamic and innovative environment. *We accept* *CVs in English only.* **Responsibilities** * Develop and maintain robust web application features using Ruby on Rails for back\-end development * Build and enhance front\-end components using ReactJS * Collaborate in pair programming sessions to ensure code quality and share knowledge * Conduct code reviews and follow test\-driven development practices to maintain consistency * Write automated tests covering unit, integration, and end\-to\-end scenarios * Integrate platform components with external services, including Association Management Systems (AMS) * Enhance and optimize multi\-tenant architecture across database, middleware, and service layers * Work closely with Product Owners, Designers, and Engineers to understand requirements and deliver solutions * Participate actively in Agile ceremonies, including sprint planning, retrospectives, and daily standups * Promote best practices in security, scalability, and maintainability within the development process * Optimize PostgreSQL queries and handle advanced data manipulation tasks * Support the migration from Angular to React, ensuring a seamless transition **Requirements** * At least 3 years of experience developing web applications using Ruby on Rails * Proven experience working with SaaS multi\-tenant architectures * Hands\-on experience in Agile XP environments, including pair programming and continuous integration * Familiarity with AWS services and experience deploying applications in a cloud\-native stack * Excellent communication skills and the ability to collaborate effectively within remote teams across different time zones * Proficiency in English, both written and spoken, at a B2\+ level or higher **Nice to have** * Experience with Angular 9\+ to support migration efforts * Knowledge of event\-driven architectures and service integrations * Strong SQL skills for analytics and managing data\-heavy features * Experience working in industries like EdTech, community platforms, or B2B SaaS products * Familiarity with DevOps practices and AWS infrastructure management tools such as CloudFormation, ECS/EKS, and Terraform * Deep understanding of relational databases, particularly PostgreSQL, including schema design and query optimization * Front\-end development expertise with ReactJS and TypeScript * Proficiency in test\-driven development tools like RSpec, Capybara, and Jest **We offer** * Learning Culture \- We want you to be the best version of yourself, that is why we offer unlimited access to learning platforms, a wide range of internal courses, and all the knowledge you need to grow professionally * Health Coverage \- Health and wellness are important, that is why we have you and up to four family members in a premiere health plan. We have a couple of options, so you can choose what is best for you and your family * Visual Benefit \- Seeing your work for us would be a sight for sore eyes. We want your vision to always be at 100% which is why we offer up to $200\.000 COP for any visual health expenses * Life Insurance Plan \- We have partnered with MetLife to offer a full\-coverage Ife insurance plan. So, your family is covered, even if you are gone. * Medical Leave Coverage \- We are one of the few companies that cover 100% of your medical leave, for up to 90 days. Your health is the most important thing to us * Professional Growth Opportunities \- We have designed a highly competitive and complete development process, where you will have all the tools to get where you have always wanted to be, personally and professionally * Stock Option Purchase Plan \- As an EPAMer you can be more than just an employee, you will also have the opportunity to purchase stock at a reduced price and become a part owner of our organization * Additional Income \- Besides your regular salary, you will also have the chance to earn extra income by referring talent, being a technical interviewer, and many more ways * Community Benefit \- You will be part of a worldwide community of over 50,000 employees, where you can learn, challenge yourself, stand out, and share your knowledge and experience with multicultural teams! *Please note that even though you are applying for this position, you may be offered other projects to join within EPAM.* EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi\-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting\-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.