Senior Full Stack Software Engineer - .NET React 525

Want to get to 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 development footprint. Ubi custom-curates Brazilian top 5% talent for their LATAM strategy, offering a unique combo of staff augmentation and employer-of-record services.

Ubiminds is assisting a company that is transforming the way organizations discover, engage, and hire the best talent. Connecting companies and candidates anytime, anywhere, end-to-end hiring platform features video interviewing, assessments, and conversational AI. As an industry leader in science-backed, modern hiring solutions powered by ethical AI, they have hosted more than 70 million video interviews and 200 million chat-based candidate engagements for over 1,200 pioneering customers around the globe.

Apply now! This is a unique opportunity for you to not only accelerate your international career but also work in a groundbreaking company.

Challenge

We are seeking a Senior Full Stack Software Engineer to join our platform team. You will help maintain and enhance a critical codebase, focusing primarily on backend systems built with .NET and frontend components using React and TypeScript.

This role involves close collaboration with other engineers and cross-functional teams to resolve issues, improve reliability, and deliver incremental improvements, with opportunities to expand into more feature-driven work over time.

What you'll do

• Design, implement, and maintain robust .NET Core services and APIs within a microservices architecture.
• Build responsive and accessible front-end experiences using React and TypeScript.
• Write clean, testable, and scalable code, following modern engineering best practices.
• Support automated test coverage for high-quality releases.
• Participate in design reviews, code reviews, and technical planning.
• Help identify and reduce technical debt across the platform.

In order to succeed in this position, you will need:

Mandatory skills

• 7+ years of professional experience with .NET Core / C# for web applications.
• Solid experience with REST APIs and microservices design.
• Experience with cloud platforms and tooling (e.g., Azure, AWS, or GCP).
• Strong proficiency with JavaScript, HTML, CSS, and frameworks like React.
• Experience with relational databases and ORMs such as Entity Framework Core.
• Familiarity with Git workflows and source control best practices.
• Basic reading and writing skills in English (used for reading documentation, variable

naming, and code comments).

• Ability to collaborate in distributed, remote teams.

Nice to Have

• Experience working on high-scale enterprise platforms.
• Familiarity with automated testing tools: xUnit, N