Senior Full Stack Engineer (.NET) - (476)

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 assisting a U.S.-based SaaS company in expanding its engineering team with an experienced Senior Full Stack Engineer focused on building scalable, secure, and high-performance applications using modern architectures and AI-powered workflows.

What You’ll Do
Build and maintain RESTful APIs and backend services using C#, .NET Core, Entity Framework, and Web API.

Apply software architecture patterns like Domain-Driven Design (DDD) and CQRS to build modular and scalable systems.

Work directly with SQL Server—designing databases, writing stored procedures, optimizing queries, and tuning performance.

Use Entity Framework (EF Core or EF6) for ORM and data access.

Write clean, testable, and maintainable code with proper documentation.

Take full ownership of testing your own code—unit, integration, and performance testing—as part of a Shift Left / No QA team setup.

Collaborate with product managers and other teams to understand requirements and deliver customer-focused features.

Use AI development tools (required)—including GitHub Copilot, Claude, or similar—to assist with code generation, refactoring, documentation, and development speed.

Required Skills & Experience

5+ years of experience in enterprise or SaaS software development.

Strong hands-on experience with:
C#, .NET Core, Web API
Angular or other frontend frameworks.
Entity Framework (EF Core or EF6)
SQL Server – writing queries, stored procedures, indexing, and performance tuning

Solid understanding of object-oriented programming, design patterns, and enterprise architecture.

Experience with DDD, CQRS, and clean layering of business logic and data access.

Familiarity with multi-threading, asynchronous programming, and system performance tuning.

Comfortable with Git and working in a modern development environment (CI/CD, Agile).

Strong debugging and troubleshooting skills.

Excellent communication skills (written and verbal) in English.

Experience working across multiple teams or squads.

Required: Active daily use of AI development tools like GitHub Copilot, Claude, or similar in your workflow.

Bonus Points

Real-world experience building AI-powered features (e.g., smart forms, intelligent search, NLP features).

Experience working in a Shift Left environment with full feature ownership—design to production.

Exposure to event-driven architecture or messaging patterns.

Perks @Ubiminds

Work directly with U.S. product engineering teams.
Remote-first culture + MacBook provided.
English lessons, referral bonuses, tech talks, and continuous learning.
Full back-office support: HR, career development, and administrative assistance.

Apply now and elevate your international career while building cutting-edge, AI-powered SaaS products!