Who We Are MAS means "more" in Spanish, and MAS Global’s name reflects our mission to create educational and career opportunities for women and Latinos in tech—just like the ANDI-EAFIT scholarship that helped our Latina Founder rise from a low-income neighborhood in Medellín to being named a Top 100 Hispanic in Tech in the U.S. Headquartered in Tampa, Florida with a strong presence in Colombia, Argentina, and across LATAM, we offer North American clients onshore and nearshore access to top tech talent. From full-stack engineering and cloud modernization to data and AI solutions, our digital pods deliver real impact. With a diverse team representing 10+ nationalities and a track record of results for clients like Johnson Controls, JPMorgan Chase, and Dell, our future is bright. MAS Global is a 100% Hispanic- and women-owned company, recognized as a Great Place to Work and one of the fastest-growing companies in the U.S. About the Opportunity We are seeking a talented Back-End .NET Developer to join our Agile development team and support mission-critical systems for a global financial services organization. In this role, you will focus exclusively on backend development, contributing to the design and implementation of scalable, high-performance APIs and microservices. This is a remote position based in Colombia , offering a collaborative environment with exposure to modern tools and cloud technologies. Key Responsibilities Maintain and enhance legacy applications built with ASP.NET WebForms and AJAX Develop backend functionality using C# and .NET Framework/Core Design, consume, and support RESTful APIs and web services Collaborate with the team to deliver features within sprints and Agile ceremonies Work with MySQL and ensure performance-optimized queries and data models Apply strong understanding of object-oriented programming (OOP) in daily development tasks Write clean, maintainable code following best practices, including unit and integration testing Troubleshoot and debug production issues related to legacy and new systems Required Qualifications Min 4+years of experience in .NET development (C#) Hands-on experience with ASP.NET WebForms and AJAX Solid understanding of object-oriented programming (OOP) principles Proficiency with relational databases , specifically MySQL Experience with Entity Framework or ADO.NET for data access Understanding of RESTful APIs and service integrations Familiarity with version control systems (e.g., Git) Experience working in an Agile/Scrum development environment Strong debugging and troubleshooting skills Soft Skills Strong communication and collaboration skills Analytical thinking and attention to detail Proactive attitude and willingness to learn Ability to work independently in a fully remote environment Our Values At MAS, we believe in the power of “MORE.” This belief drives our commitment to excellence, accountability, collaboration, and growth: Client Value Obsession – We deliver the highest levels of excellence by proactively addressing client needs. Driven by Action & Accountability – We uphold the highest standards of reliability and follow-through. One Team, One Voice – We foster inclusivity, value diverse perspectives, and support one another as a unified team. Growth Mindset – We thrive on change and innovation through continuous learning and personal development. Why MAS Global? Join a team where your voice matters. At MAS Global, people from diverse backgrounds come together to make an impact and bring their authentic selves to work. As a woman- and minority-owned business, we are proud to be an equal opportunity employer. We embrace inclusivity and accessibility and provide reasonable accommodations for applicants with disabilities. Are you legally authorized to work in the country you reside at the moment? * Please provide with your monthly salary expectations in USD * #J-18808-Ljbffr