Principal Full Stack Engineer - .NET Ecosystem
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Коротко по делу
Principal full-stack engineer with 8+ years building web apps in C#, SQL, and Angular. Needs strong troubleshooting, testing, Shift Left practices, English communication, and comfort using AI-powered development tools. Role focuses on SaaS compliance/security remediation in complex enterprise applications.
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Info on the Principal 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 leveraging AI to identify outstanding compliance issues across its applications. As part of this initiative, the company is expanding its engineering team to address critical technical and security concerns, modernize applications, and ensure a high level of quality, reliability, and compliance.
Challenge
We’re looking for a Principal Full Stack Engineer with strong experience in the .NET ecosystem to help resolve outstanding compliance issues identified by AI within SaaS applications.
In this role, you will combine hands-on development and implementation with high-level technical leadership, focusing on architecture, design, technical planning, troubleshooting, and security-related remediation. You will be responsible for helping identify and resolve issues that, if left unresolved, could potentially become security risks.
The ideal candidate is a highly experienced engineer who can navigate complex enterprise applications, understand security and compliance findings, and translate technical issues into practical, scalable solutions. You should be comfortable taking ownership of complex problems while collaborating effectively across teams.
Responsibilities
- Design, develop, and maintain scalable, secure, and high-performance SaaS applications.
- Investigate and resolve outstanding compliance and security-related issues identified through AI-driven analysis.
- Participate in architecture and technical design decisions across the application stack.
- Perform hands-on development and implementation of solutions to address identified issues.
- Troubleshoot complex application, performance, compliance, and security challenges.
- Analyze and remediate issues identified through CVEs, SAST scans, and other security audits.
- Design and optimize relational databases, SQL queries, stored procedures, and data access patterns.
- Contribute to technical planning and define strategies for resolving complex application issues.
- Write clean, maintainable, and well-tested code following engineering best practices.
- Work in a Shift Left development environment with strong ownership of software quality and reliability.
- Leverage AI-powered development tools and coding agents to improve engineering productivity and solution delivery.
- Collaborate effectively across teams to resolve technical and security challenges.
Mandatory Skills
Experience
- 8+ years of professional experience building web applications using C#, SQL, and Angular.
- Experience working with stored procedures, relational databases, or 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 work 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 able to take ownership of complex technical challenges.
- Strong collaboration skills and ability to work effectively across teams.
- Clear and confident 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.
Nice to Have
- Familiarity with reading and interpreting CVEs, SAST scans, and other security audits to identify and resolve application issues.
- Strong knowledge of Microsoft SQL Server, including indexing and query optimization.
- Familiarity with AWS or other cloud environments, including services such as EC2, S3, and SES.
- Exposure to modern API technologies such as GraphQL.
- Experience with coding agents or AI-assisted development workflows, including MCP, GitHub Copilot, and Claude Code.
- Experience building applications for large enterprise customers.
Team & Environment
- Engineering environment focused on resolving complex compliance and security challenges in SaaS applications.
- Opportunity to work at the intersection of software engineering, architecture, AI, compliance, and application security.
- Strong focus on software quality, reliability, and secure development practices.
- Shift Left engineering culture with a strong emphasis on proactive issue identification and remediation.
- Collaborative environment requiring technical ownership and cross-team communication.
- Opportunity to leverage modern AI-powered development tools and workflows.
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.
Perks and Benefits
As a Principal 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. \n
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Чем предстоит заниматься
- Design, develop, and maintain scalable, secure, and high-performance SaaS applications.
- Investigate and resolve outstanding compliance and security-related issues identified through AI-driven analysis.
- Participate in architecture and technical design decisions across the application stack.
- Perform hands-on development and implementation of solutions to address identified issues.
- Troubleshoot complex application, performance, compliance, and security challenges.
- Analyze and remediate issues identified through CVEs, SAST scans, and other security audits.
- Design and optimize relational databases, SQL queries, stored procedures, and data access patterns.
- Contribute to technical planning and define strategies for resolving complex application issues.
- Write clean, maintainable, and well-tested code following engineering best practices.
- Work in a Shift Left development environment with strong ownership of software quality and reliability.
- Leverage AI-powered development tools and coding agents to improve engineering productivity and solution delivery.
- Collaborate effectively across teams to resolve technical and security challenges.
Что требуется
- 8+ years of professional experience building web applications using C#, SQL, and Angular.
- Experience working with stored procedures, relational databases, or performance-sensitive SQL.
- Bachelor's degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent practical work experience.
- 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 able to take ownership of complex technical challenges.
- Strong collaboration skills and ability to work effectively across teams.
- Clear and confident written and verbal communication skills in English.
- 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.
- Preferred: Familiarity with reading and interpreting CVEs, SAST scans, and other security audits to identify and resolve application issues.
- Preferred: Experience building applications for large enterprise customers.
Преимущества
- Placed in a product-based company and treated like a full-time team member.
- Full back-office support, including career guidance, HR, and concierge services.
- Remote-first policy.
- Company-provided MacBook.
- Access to tech talks, chapter meetings, and a strong community of top engineers.
- Free English lessons with a native English speaker.
- Referral bonus for recommending new Ubiminders.
- Access to Florianópolis HQ with snacks, massages, drinks, and games.
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.