[Hiring] Principal Full Stack Software Engineer @Ubiminds

Role Description

Ready to take the next step in your international career? We can support you! In this opportunity, you will join a product engineering team building a next-generation cloud-native SaaS platform from the ground up. You'll work alongside architects, product managers, designers, and engineers to deliver scalable, secure, and high-performance software while embracing AI-first development practices that accelerate delivery and improve engineering quality.

We are looking for a Principal Full Stack Engineer who combines deep technical expertise with hands-on software development and technical leadership. This is a highly impactful role where you'll own features end-to-end, define architecture, mentor engineers, and establish engineering best practices across the organization.

You'll help shape modern, AI-assisted software development workflows, leveraging tools like GitHub Copilot, Cursor, and Claude Code to deliver production-ready solutions in a fast-paced, shift-left engineering environment.

Responsibilities

• Design, develop, and deliver scalable SaaS applications using .NET, Angular, SQL Server/PostgreSQL, and AWS.
• Own end-to-end delivery, from domain modeling and backend services to frontend implementation, testing, deployment, and production support.
• Leverage AI-assisted development tools to generate production-ready code and accelerate engineering workflows.
• Collaborate with Architects to define application architecture and validate technical approaches through proof-of-concepts (PoCs).
• Design solutions using modern architectural patterns including Domain-Driven Design (DDD), CQRS, Event-Driven Architecture, Backend-for-Frontend (BFF), and API Gateway.
• Develop modern Angular applications using standalone components, Signals, RxJS, and Reactive Forms.
• Design efficient data models and optimize database performance for scalable applications.
• Troubleshoot complex production issues, perform root cause analysis, and improve system reliability.
• Mentor engineers through technical leadership, architecture discussions, code reviews, and knowledge sharing.
• Promote engineering excellence through automation, AI-enabled workflows, and continuous improvement.

Qualifications

• 10+ years of professional software engineering experience.
• Experience as a Principal Engineer, Lead Engineer, or equivalent technical leadership role.
• Expert proficiency in C#, .NET, Entity Framework, Angular, and SQL Server/PostgreSQL.
• Strong experience with DDD, CQRS, REST APIs, Event-Driven Architecture, and distributed systems.
• Experience designing secure, scalable, multi-tenant SaaS applications.
• Strong knowledge of SQL optimization, data modeling, Redis, and OpenSearch/Elasticsearch.
• Experience with automated testing, CI/CD, Git, Agile methodologies, and modern DevOps practices.
• Experience with observability and monitoring tools, as well as static analysis tools such as SonarQube and Mend.
• Hands-on experience using GitHub Copilot, Cursor, Claude Code, or similar AI coding assistants.
• Strong communication, mentoring, collaboration, and problem-solving skills.
• Bachelor's degree in Computer Science, Engineering, or equivalent professional experience.
• Advanced English communication skills.

Requirements

• Experience with AWS services such as ECS/Fargate, Lambda, SQS/SNS, S3, and RDS.
• Experience with Terraform or AWS CDK.
• Knowledge of GraphQL, WebSockets, or Server-Sent Events (SSE).
• Experience with Playwright or SmartBear TestComplete.
• Experience using Datadog, CloudWatch, or New Relic.
• Experience building AI-enabled applications using LLMs, RAG, or Model Context Protocol (MCP).

Benefits

• 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.
• Get your own MacBook.
• Have access to growth opportunities through tech talks, chapter meetings, and remote happy hours.
• Improve your English through free lessons with native English speakers.
• Participate in our Candidate Referral Program.
• Optionally use our Florianópolis office with snacks, games, and weekly massages.