Senior Full Stack Engineer - NET ecosystem (545)

# Info on the Senior Full Stack Engineer role

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 growing SaaS company that is modernizing its technology platform and investing in scalable, AI-assisted software development practices. As part of this journey, they are expanding their engineering team to build secure, high-performance applications while leveraging modern architecture, cloud technologies, and AI-powered development workflows.

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# Challenge

We’re looking for a **Senior Full Stack Engineer** with strong experience in the **.NET ecosystem** to help build scalable, secure, and high-performance SaaS applications.

In this role, you'll be responsible for hands-on software development, architecture and design, troubleshooting complex technical challenges, and planning technical solutions. You'll work across both backend and frontend technologies while collaborating closely with cross-functional teams to deliver reliable, high-quality software.

The ideal candidate embraces modern engineering practices, enjoys solving challenging technical problems, and is excited to leverage AI-powered development tools to improve productivity and software quality.

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# Responsibilities

• Design, develop, and maintain scalable, secure, and high-performance SaaS applications.
• Participate in architecture and technical design decisions across the application stack.
• Develop and maintain backend services using the .NET ecosystem.
• Build and maintain modern web applications using Angular.
• Troubleshoot complex application issues and optimize system performance.
• Design and optimize relational databases, SQL queries, and stored procedures.
• Write clean, maintainable, and well-tested code following engineering best practices.
• Contribute to planning, technical discussions, and solution design.
• Work in a Shift Left engineering environment with strong ownership of software quality.
• Leverage AI-powered development tools to accelerate software delivery and improve engineering efficiency.

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# Mandatory Skills
### Experience

• 5+ years of professional experience building web applications using **C#, SQL, and Angular**.
• Experience working with **stored procedures, relational databases, and performance-sensitive SQL**.
• Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field (B.E., <B.Tech>, MCA, <B.Sc>), or equivalent practical experience.

### Engineering Practices

• Strong troubleshooting, debugging, and performance optimization skills.
• Experience writing **unit and integration tests**.
• Comfortable working in a **Shift Left** development environment.
• Strong commitment to delivering high-quality, reliable software.
• Self-driven, proactive, and collaborative mindset.
• Excellent written and verbal communication skills in English.

### AI & Modern Development

• Willingness to embrace **AI-powered development tools** such as GitHub Copilot, Cursor, Claude Code, or similar.
• Basic to intermediate understanding of modern AI concepts including **LLMs, MCP, RAG**, or related technologies.

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# Nice to Have

• Experience modernizing **<ASP.NET> Web Forms** or similar server-rendered applications.
• Strong knowledge of **Microsoft SQL Server**, including indexing and query optimization.
• Familiarity with **AWS** services such as EC2, S3, SES, or similar cloud platforms.
• Exposure to modern API technologies such as **GraphQL**.
• Experience working with **coding agents** or AI-assisted development workflows.
• Solid understanding of **HTML and CSS** in traditional web application environments.

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# Team & Environment

• Collaborative engineering team focused on modernizing enterprise SaaS applications.
• Strong engineering culture centered on quality, ownership, and continuous improvement.
• Opportunity to work with modern AI-assisted software development workflows.
• Collaborative environment with architecture discussions and cross-functional planning.
• Fast-paced product organization focused on scalability, innovation, and engineering excellence.

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# About Ubiminds
## Our Culture
**People First.** We are all about people!
**Challenge Yourself.** Continuous improvement is in our essence.
**Make it Happen.** We value attitude, ownership, and commitment.
**We’re in This Together.** We work, grow, and evolve as a team.
**Averaging on Awesome.** We deliver high-quality services and exceed expectations.
**Keep it Real.** Honesty, transparency, and openness — always.
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# Perks and Benefits

As a **Senior Full Stack Engineer @Ubiminds**, you

• Are placed in a product-based company, treated like a full-time team member.
• Count on our full back-office support: career guidance, HR, and concierge services.
• Enjoy our remote-first policy.
• Get your own MacBook (no BYOD here!).
• Access tech talks, chapter meetings, and a strong community of top engineers.
• Improve your English through free lessons with a native English speaker.
• Earn a referral bonus when recommending new Ubiminders.
• Want office vibes sometimes? Our Florianópolis HQ is open — snacks, massages, drinks, and games included.