Principal Full Stack Engineer (AI-First Development)

TL;DR

Principal Full Stack Engineer (AI-First Development): Building and delivering end-to-end cloud-native SaaS applications with an accent on .NET, Angular, and production-grade architecture. Focus on AI-assisted development workflows, complex distributed systems, and technical leadership through DDD/CQRS and event-driven patterns.

Location: Remote (LATAM)

Company

hirify.global connects LATAM talent with American software product companies and provides employer-of-record support.

What you will do

• Design, develop, and deliver scalable SaaS applications end-to-end (domain modeling, backend services, frontend, testing, deployment, and production support).
• Define and validate application architecture with architects using proof-of-concepts (PoCs).
• Implement modern architectural patterns including DDD, CQRS, event-driven architecture, BFF, and API Gateway.
• Build Angular applications using standalone components, Signals, RxJS, and Reactive Forms; optimize data models and database performance.
• Troubleshoot complex production issues with root-cause analysis to improve reliability.
• Provide technical leadership: mentor engineers, run architecture discussions and code reviews, and promote automation and AI-enabled workflows.

Requirements

• 10+ years of professional software engineering experience and 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.
• Advanced English communication skills.

Nice to have

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

Culture & Benefits

• Remote-first policy and full back-office support (career guidance, HR, concierge services).
• Full-time employee treatment with employer-of-record support.
• MacBook provided; access to tech talks, chapter meetings, and remote happy hours.
• Free English lessons with native English speakers.
• Optional use of Florianópolis office (snacks, games, weekly massages).

Hiring process

• Interview with a Tech Recruiter (chat about role and experience).
• Client process (may vary).
• Offer.