Principal Full Stack Software Engineer - AI-First Development

Principal Full Stack Engineer – AI First Development

Remote – LATAM / Full-time / Remote

Ready to take 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 global teams. We connect top LATAM talent with international product companies while providing full employer-of-record support and long-term career development.

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 Git Hub Copilot
, Cursor
, and Claude Code to deliver production-ready solutions in a fast-paced, shift-left engineering environment.

• 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.

• 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 Open Search/Elasticsearch
  .

• Experience with automated testing,
  CI/CD
  , Git
  , Agile methodologies, and modern Dev Ops practices.

• Experience with observability and monitoring tools, as well as static analysis tools such as Sonar Qube and Mend
  .

• Hands-on experience using Git Hub 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.

• Experience with
  AWS services such as ECS/Fargate
  , Lambda
  , SQS/SNS
  , S3
  , and RDS
  .

• Experience with
  Terraform or…