Senior Full Stack Developer (.Net + React.Js)

Santex is a US-based global company founded in 1999, with 25 years of experience in the software industry. Headquartered in California with offices in Córdoba, Argentina, its talent network spans over 18 countries thanks to its flexible, remote-first culture. Santex specializes in custom enterprise software development, operating through Hubs that include eCommerce, BIM, Mobility, Content Delivery, Integration, Web & Mobile Development, Cloud Computing, Artificial Intelligence (AI), Data Science, IT Consulting, and Services. The company is committed to making a positive impact across three dimensions: economic, social, and environmental.

Job Description: 

We are looking for a Senior Full-Stack Developer to join our team. The ideal candidate will have solid experience in both front-end and back-end development, with strong skills in React.js and .NET technologies. You will work closely with cross-functional teams to design, develop, and deliver scalable, high-performance applications.

Responsibilities

• Develop responsive and dynamic user interfaces using React.js.
• Design, build, and maintain back-end services and APIs using .NET.
• Collaborate with product managers, designers, and other developers to define and implement new features.
• Write clean, maintainable, and well-tested code.
• Ensure optimal application performance, scalability, and security.
• Participate in code reviews and contribute to continuous improvement processes.

Requirements

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• 5+ years of experience in full-stack development.
• Proficiency in React.js, .NET (C#), JavaScript, HTML, and CSS.
• Strong experience with relational and/or non-relational databases (e.g., SQL Server, MongoDB).
• Ability to design and consume RESTful APIs.
• Advanced English — excellent verbal and written communication skills.

Nice to Have

• Experience with cloud platforms such as AWS or Azure.
• Knowledge of DevOps practices and CI/CD pipelines.
• Familiarity with Agile/Scrum methodologies.

Location

• Candidates must be based in Argentina or Peru.