Senior Full Stack Engineer .NET / React (479)

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.

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.

- 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.

- 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.

- 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).

- Join one of the Assessment-focused engineering teams.

- Collaborative environment with senior engineers and technical leadership.

- Strong focus on product evolution and maintainability.

- 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.

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 Florianópolis headquarters is available, whenever you want, with weekly quick massages & tasty snacks, soft drinks, and games

1. Interview with Tech Recruiter (chat about the job opening and your experiences)

2. Technical Assessment

3. Client Interview

4. Offer (yay)