Senior Full Stack Engineer .NET / React (566)

Info on the Senior Fullstack Engineer .NET / React role Ready to take the next step in your international career? We can support you! Ubiminds is a GPTW-certified, people-first company that partners with American software product companies to scale their global teams. We curate top LATAM talent and connect professionals with long-term, high-impact opportunities while providing full employer-of-record support. In this role, you will join a US-based product company that builds digital interviewing and talent assessment solutions used globally. Challenge We’re looking for a Senior Full Stack Software Engineer with strong .NET (C#) and React expertise to join one of the Assessment product teams. This is a new role, and the ideal candidate must be comfortable handling ambiguity, adapting to evolving requirements, and contributing to both new feature development and existing system evolution. You’ll work in a collaborative, distributed team environment and play a key role in shaping scalable and maintainable solutions. Responsibilities: - Develop new features and maintain existing components across front-end and back-end systems. - Build and enhance applications using React (front-end) and .NET / C# (back-end). - Design and optimize MS SQL databases for performance and reliability. - Contribute to architectural discussions and system design decisions. - Write clean, maintainable, and testable code. - Collaborate closely with cross-functional teams, including product and engineering stakeholders. - Help improve engineering standards and development workflows. Mandatory Skills: - Strong experience with .NET (C#) in production environments. - Solid experience building modern front-end applications with React. - Experience working with MS SQL or similar relational databases. - Senior-level mindset with strong ownership and accountability. - Experience working on existing production systems (not only greenfield). - Ability to handle evolving requirements and technical ambiguity. - Strong English communication skills (written and verbal). - Experience collaborating in distributed teams. Nice to Have: - Experience with microservices architectures. - Familiarity with AWS cloud environments. - Exposure to test automation practices. - Experience with AWS AI-related services such as SageMaker, Lex, Comprehend, or Rekognition (bonus, not required). Team & Environment: - Join one of the Assessment-focused engineering teams. - Collaborative environment with senior engineers and technical leadership. - Strong focus on product evolution and maintainability. About Ubiminds Our Culture - People First. We are all about people! - Challenge yourself. There’s always room for improvement and continuous improvement is in our essence. - Make it happen. Be ready to take challenges as they come. It’s all about attitude and commitment. - We’re in this together. We work as a team, thrive as a team, and evolve as a team. - Averaging on awesome. We work hard to deliver high-quality services and look forward to exceeding expectations. - Keep it real. We promise you honesty, transparency, and openness, regardless of the situation. Perks and Benefits As a Full Stack Engineer - NET / React @Ubiminds, you: - You are placed in a product-based company, with the same treatment as their full-time employees. - Have our full back-office support, from career guidance to HR and concierge services. - Enjoy our remote-first policy – we are a distributed team, after all. - Get your own MacBook (none of that "bring your own device" stuff here). - Have access to growth opportunities with other amazing technology professionals, through tech talks, chapter meetings, and even remote happy hours for tons of fun! - Improve your English through free lessons with a native English speaker - get to the next level on your communication skills! - Candidate Referral bonus (promote Ubi to your tech friends, and get paid for it!) - Miss working in the office? Our cool Florianópol