* **Join ABC Fitness, the leading technology provider for the fitness industry!** **Job Description** **Mid-Level Backend Developer** Join ABC Fitness and become part of a culture as ambitious as it is authentic. Let's transform the future of fitness—together! **Our Values** **Best Life** We believe great work starts with great people. That’s why our culture is built on respect, trust, and a sense of belonging. We create an inclusive environment where every team member can bring their authentic self to work—because diverse perspectives drive innovation and create meaningful impact. **Growth Mindset** We are doers, thinkers, and dreamers. At ABC Fitness, your growth is our investment. Through continuous learning, mentorship, and professional development opportunities, we empower you to reach new levels—both personally and professionally. **One Team** From day one, you’ll be part of a team that collaborates, celebrates, and cares. We act quickly, support each other, and have fun along the way. Because when you thrive, we all thrive. **ABOUT THE OPPORTUNITY** It’s fun to work at a company where people truly BELIEVE in what they’re doing! *We are committed to bringing passion and customer focus to the business.* **INTRODUCTION** We are looking for a Mid-Level Backend Developer to work on the development and evolution of our EVO system, using technologies from the Microsoft ecosystem. The candidate will be responsible for implementing new features, optimizing existing code, performing maintenance, and ensuring software quality through best development practices and automated testing. Our environment involves DDD architecture, Web APIs, SQL Server, and Azure, and we are seeking someone with backend development experience, strong coding practices, and a problem-solving and scalability-oriented mindset. **WHAT YOU WILL DO:** * Develop and maintain backend applications in C# and .NET, using Web APIs and Azure Functions * Create and optimize procedures and queries in SQL Server * Develop and maintain jobs and automated processes * Apply DDD (Domain-Driven Design) concepts in system modeling and implementation * Ensure code quality through unit testing and best development practices * Maintain and evolve the monolith, ensuring its stability and performance * Collaborate with business analysts, QA, and frontend developers to deliver robust, well-integrated solutions * Participate in code reviews and propose architectural and performance improvements **REQUIREMENTS:** * Solid experience with C# and .NET (Core or Framework) * Knowledge of Web APIs and Azure Functions * Experience with SQL Server, including procedures and query optimization * Experience with unit testing and frameworks such as xUnit, NUnit, or MSTest * Knowledge of DDD (Domain-Driven Design) architecture * Experience with backend automation jobs and processes * Experience with Git and Azure DevOps for version control and task management * Ability to debug and solve problems in monolithic systems * Strong communication and teamwork skills **PREFERRED QUALIFICATIONS:** * Experience integrating systems via REST APIs and messaging * Knowledge of design patterns and architectural best practices * Experience with monitoring and logging (Application Insights) * Experience in projects modernizing monolithic systems **WHAT WE OFFER** * Purpose-driven company committed to helping change lives through technology, with a value-based culture focused on Best Life (\#bestlife), One Team (\#oneteam), and Growth Mindset (\#growthmindset); * 22 working days off after 12 months of service, without any reduction in fees; * Home office subsidy—maybe you need help with your internet bills; * Disconnect Days—one time per quarter, we take a collective break and enjoy a day off together around the world. \#oneteam. * Free access to LinkedIn Learning; * Dell and Microsoft Office partnership (up to 30% discount on PCs, electronics, and accessories); * University partnerships: Mackenzie, FIAP, and Fundação Vanzolini; * EAP—psychological, legal, and financial assistance whenever you need it; * Subscription app for gym access; * Opportunity to enroll in corporate health insurance by paying the full amount according to company policy and negotiation. Enrollment is subject to minimum service company registration time and direct approval of the health plan, which is not ABC's responsibility; * Corporate life insurance at no additional cost At **ABC Fitness**, we don’t just develop technology—we build communities and transform lives. Here, your work matters, your growth is supported, and your voice is heard. We value diverse talents and encourage you to apply even if you don’t meet all the requirements. **ABC’S COMMITMENT TO DIVERSITY, EQUITY, BELONGING, AND INCLUSION** ABC is an equal opportunity employer committed to diversity, equity, and inclusion. Our goal is to create a workplace where every employee, customer, and partner feels valued, inspired, and empowered to achieve their full potential. For us, inclusion isn’t just the right thing to do—it’s a strategic business priority. Learn more at **a****bcfitness.com****.** **About ABC Fitness** **A****BC Fitness** is the #1 software provider for fitness businesses of all sizes worldwide. With over **30,000** **clubs**, **650,000** **trainers**, **40** **million** **members**, and processing over **$12** **billion** **in** **payments** **per** **year**, ABC Fitness delivers scalable, data-driven solutions to simplify club management and engage members and customers. From **personal trainers**, **boutique studios**, and **gyms**, to large international health and wellness chains, ABC Fitness drives your business forward through technology and industry insights. Innovation is at the heart of everything we do, in solutions like **ABC** **Glofox**, ABC Ignite, ABC **Trainerize**, and ABC Evo. Let’s turn your fitness vision into a perfect reality—together. Learn more at **abcfitness.com** \#LI\-REMOTE *If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!*