Sr. Developer

Are you interested in working with the World’s leading AI-powered Quality Engineering Company? Ready to advance your career, team up with global thought leaders across industries and make a difference every day? Join us at QualityAI!

We are looking for a Sr Developer to join our growing team in Argentina or Mexico! 

Location: Argentina/Mexico (Remote) 

Time zone: EST 

We’re seeking Senior Engineer who thrives at the intersection of scalable cloud architecture and modular frontend development. You’ll build Azure-native services in C# using Functions, Service Bus, and Event Grid, while crafting composable. This role demands deep expertise in SOLID principles, unit testing, and DevOps workflows across GitHub and Azure DevOps.

Responsibilities
• Implement Azure Functions using C# (.NET 8+) for event-driven and serverless workflows
• Design and integrate messaging systems using Azure Service Bus and Event Grid (topics, subscriptions, filters)
• Build modular, tree-shakable TypeScript ESM libraries with clean separation of concerns
• Write comprehensive unit tests for both C# and TypeScript codebases using xUnit, MSTest, and Vitest
• Apply solid principles rigorously across backend and frontend components
• Collaborate on CI/CD pipelines using Azure DevOps and GitHub Actions for build, test, and deployment automation
• Ensure traceability and observability across services with structured logging and diagnostics
• Participate in code reviews, architecture discussions, and developer onboarding

Required Skills

• .NET & C# > 5+ years experience, async/await, DI, clean architecture
• Azure Functions > Durable workflows, bindings, retries, diagnostics
• Azure Messaging > Service Bus (topics, sessions), Event Grid (custom schemas, filters)
• TypeScript & ESM > Deep understanding of ESM syntax, module boundaries, tree-shaking
• Unit Testing > xUnit/MSTest for C#, Vitest for TypeScript, mocking strategies
• Solid Principles > Proven application across layered architecture and modular design
• DevOps & Git > Experience with Git workflows, GitHub Actions, Azure DevOps pipelines

Preferred Skills
• Familiarity with Power Platform extensibility or Azure Logic Apps
• Knowledge of domain-driven design (DDD) & event sourcing
• Passion for developer enablement, modularity, and reproducibility

Why QualityAI?

QualityAI is an AI-first quality engineering company helping enterprises deploy and scale complex systems with greater confidence. Operating across data, models, platforms, infrastructure, and operational environments, the company provides assurance and engineering expertise that helps organizations ensure systems perform reliably in real-world conditions.

Formerly Qualitest, QualityAI supports global enterprises across regulated and technology-driven industries, combining deep engineering heritage with AI-enabled delivery, operational assurance, and lifecycle expertise to help clients achieve certainty at go-live.

• Be a part of a company who strives to support for diversity and inclusion in the workplace – we are one, we are many at QualityAI. Celebrate culture, share knowledge with engineers from around the globe, and inspire each other through our differences.
• Local and global opportunities – we offer you internal rotation and international mobility opportunities to grow your career.
• Clear view of your career and progression with the company – QualityAI is growing massively (since Jan 2021 – added more than 2000 engineers) and giving you the opportunity to grow with us.
• Work hard and play harder with our flexible and casual culture. Take a break from work and join an employee event, or enjoy the amenities and games provided from one of our Employees Centers.
• Never stop experimenting and learning with QualityAI Tech academy: 3000+ training courses, mentorship programs, technical tribes, sponsored certifications, leadership programs and much more
• Earn bonuses via our Client Referral and Employee Referral Program’s. Refer and earn – tap your network for net-worth.

If you like what you have read, send us your resume and let’s start talking!

Intrigued to find more about us? Visit our website at https://www.QualityAIgroup.com/

If you like what you have read, send us your resume and let’s start talking!

https://www.linkedin.com/company/qualityaigroup