Senior Full Stack Software Engineer

at Ubiminds: You, International.

Job description

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 one of our product assessment teams, contributing to both new feature development and the maintenance of critical systems. The team collaborates closely with PMs, Product Designers, QA, and other engineers to deliver scalable and reliable user-facing solutions.

This role involves adapting to evolving processes, handling ambiguity with confidence, and operating in a more structured and cross-functional engineering environment. The successful candidate will balance hands-on development with strategic decision-making, helping shape solutions that are clean, maintainable, and impactful.

What you’ll do

- Design, implement, and maintain robust .NET services and scalable APIs.

- Build responsive and accessible front-end interfaces with React and TypeScript.

- Write clean, secure, testable, and maintainable code using modern engineering practices.

- Develop new product features while also supporting and evolving existing systems.

- Work collaboratively with PMs, designers, QA engineers, and peer developers.

- Adapt to a maturing development culture with more defined processes.

- Participate in design/code reviews, technical planning, and agile ceremonies.

- Demonstrate ownership, proactive learning, and a strong sense of responsibility in a distributed environment.

- Help reduce technical debt and improve code quality across the codebase.

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

Mandatory skills

- Strong experience with .NET (C#) for backend development.

- Solid knowledge of React and front-end development practices.

- Ability to operate at a senior level: autonomy, proactive communication, and team alignment.

- Comfort working with cross-functional teams and navigating structured, evolving processes.

- Strong problem-solving mindset and adaptability to ambiguity.

- Fluent English reading and writing skills.

- Experience working in distributed, remote teams.

Nice to Have

- Familiarity with Python (legacy systems only; not the focus of this role).

- Experience with cloud services, particularly AWS (SageMaker, Lex, Comprehend, Rekognition).

- Background in microservices architecture.

- Exposure to containerization (Docker), test automation, or DevOps practices.

Perks and Benefits

As a Senior Full Stack Software Engineer @Ubiminds, 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

How our process works

• Interview with Tech Recruiter (specific chat about the job opening)

• Client process (including technical challenges and on-demand assessments)

• Offer

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