Senior Software Engineer - .NET/React (477)

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.

We are looking for a Senior Full Stack Software Engineer (.NET/React.js) to join one of our Product Assessment teams. You will work on both the development of new features and the evolution and maintenance of critical systems.

In this role, you will face meaningful technical challenges and collaborate in a structured, cross-functional environment, always with a focus on making a real impact on the product.

💼 About the Role

We’re looking for a Senior Software Engineer who’s passionate about writing clean, scalable, and maintainable code. You’ll work with a modern tech stack in a fully distributed environment, collaborating with developers, project managers, and internal users.

🛠️ Responsibilities

Write efficient and readable code based on technical requirements.

Troubleshoot, debug, maintain, and improve existing software.

Test and deploy applications and programs.

Collaborate with developers, testers, product owners, and other teams.

Design and build front-end interfaces using React.

Contribute to architectural design and decision-making.

🧪 Tech Stack

Backend: C# (.NET)

Frontend: React, JavaScript, TypeScript

Infrastructure: AWS (Lambda, Step Functions, EKS), Terraform, Docker

Databases: SQL Server, DynamoDB

DevOps & Monitoring: GitLab, Datadog, Opsgenie

✅ Must-Have Requirements

Senior software development experience.

Strong proficiency in C# and React.

Experience with modern JavaScript/TypeScript.

Solid understanding of SOLID principles and Clean Code practices.

Deep knowledge of architectural patterns.

Hands-on experience with unit testing (bonus for synthetic or end-to-end testing).

Strong analytical and debugging skills.

Willingness to mentor and support other developers.

Open-minded and diplomatic approach to problem-solving and collaboration.

Excellent written and verbal communication skills.

🌟 Nice-to-Haves

Experience working with third-party vendors.

Familiarity with AWS Step Functions.

💬 Soft Skills

Patience when working with end users.

Persistence when dealing with external vendors.

Self-motivation and the ability to thrive in a dynamic environment.

Adaptability to shifting requirements and priorities.

• 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

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

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

• Offer