Senior Mobile Developer

Santex is a global Certified B technology company as well as one of North America's fastest-growing companies, according to the Inc. 5000. It’s present in 18 countries and over 100 cities, and headquartered in Argentina with offices in the United States, Mexico, and Peru. Its two service lines — AI Tech Consulting and AI-Optimized Engineering — help organizations comprehensively adopt technology, expand their capabilities, and improve business outcomes at scale. The same approach defines its culture: Santex has 80.4% employee engagement (global average: 21%), 8% annual turnover (tech sector: 20–25%), 9,369 training hours invested in 2025 — more than double the global average —, and a 26.5% year-over-year reduction in carbon footprint, achieving carbon neutrality through offsetting. Santex. A company with purpose and judgment. Yes, it's possible.   We are an Equal Opportunity Employer and are committed to fostering an inclusive and diverse workplace. We do not discriminate on the basis of race, color, religion, sex, gender identity or expression, sexual orientation, national origin, age, disability, veteran status, genetic information, or any other characteristic protected by applicable law. All qualified applicants will receive consideration for employment without regard to any of these factors. We strongly encourage candidates from all backgrounds to apply.   Job Description: SDET (Software Development Engineer in Test) We are looking for a skilled Mid-Senior SDET to own test strategy and automation across our platform, spanning two distinct technology stacks: a .NET / SQL Server service, and a set of Node.js / AWS Lambda serverless microservices that share a common stack. You will build and maintain automated test coverage across the .NET/SQL Server service and event-driven AWS microservices, validating both synchronous APIs and asynchronous, queue-driven workflows, while partnering closely with engineers to define testability requirements early in feature design.  Essential Functions ●Design and implement automated test suites across our .NET/SQL Server service and Node.js Lambda microservices. ● Build and maintain unit and integration tests using Mocha, Chai, and Nock (HTTP mocking) for Node.js Lambda functions. ● Track and report code coverage using c8, enforcing coverage thresholds in CI. ● Validate event-driven flows involving SQS and EventBridge, including async processing and message-based integration paths. ● Test REST API contracts across both external (public, REGIONAL) and internal (PRIVATE, VPC- isolated) API Gateway endpoints, including SCIM 2.0 compliance validation. ● Validate data layer changes across SQL Server and RDS Aurora PostgreSQL, including DACPAC- based schema deployments. ● Build test coverage into CI/CD pipelines (Azure Pipelines) across DEV → QE → STG → UAT → PE → PROD. ● Validate Terraform-provisioned infrastructure behaves as expected per environment (dev/dev1/uat/qe/prod). ● Monitor test failures and application behavior using CloudWatch Logs and Dynatrace. ● Partner with engineers to define testability requirements early in feature design across the platform. Skills and Abilities Required Must-Haves: ● Strong experience with Mocha, Chai, Nock, and c8 (or directly equivalent JS testing tools). ● Experience testing AWS serverless architectures (Lambda, API Gateway, SQS, EventBridge). ● Working knowledge of SQL Server and data validation/testing for .NET applications. ● Experience integrating automated tests into CI/CD pipelines (Azure Pipelines or equivalent). ● Ability to test across two distinct architectures (monolithic .NET/SQL vs. distributed serverless)within the same role. ● Familiarity with API testing tools/approaches for both REST and event-driven (queue-based) systems. Nice-to-Haves: ● Experience validating SCIM 2.0-compliant services. ● Experience with Terraform-provisioned test/staging environments. ● Experience with Dynatrace or CloudWatch-based test observability. ● Experience testing payments or identity/access management systems. Education ● Bachelor’s degree in computer science, Engineering, or related field, or equivalent practical experience. Experience ● 4–8 years of professional QA/SDET experience, including test automation ownership. ● Experience delivering production test automation across multiple, architecturally distinct systems preferred. ● Experience working in Agile or team-based development environments preferred. Accountability / Scope ● People Management: No. ● Scope: Individual contributor responsible for test strategy and automation coverage across the product portfolio. ● Decision Making: Makes test-design and tooling decisions within defined quality standards and guidance. Travel Requirements ● Minimal to none.

Santex is a global Certified B technology company as well as one of North America's fastest-growing companies, according to the Inc. 5000. It’s present in 18 countries and over 100 cities, and headquartered in Argentina with offices in the United States, Mexico, and Peru. Its two service lines — AI Tech Consulting and AI-Optimized Engineering — help organizations comprehensively adopt technology, expand their capabilities, and improve business outcomes at scale. The same approach defines its culture: Santex has 80.4% employee engagement (global average: 21%), 8% annual turnover (tech sector: 20–25%), 9,369 training hours invested in 2025 — more than double the global average —, and a 26.5% year-over-year reduction in carbon footprint, achieving carbon neutrality through offsetting. Santex. A company with purpose and judgment. Yes, it's possible.   We are an Equal Opportunity Employer and are committed to fostering an inclusive and diverse workplace. We do not discriminate on the basis of race, color, religion, sex, gender identity or expression, sexual orientation, national origin, age, disability, veteran status, genetic information, or any other characteristic protected by applicable law. All qualified applicants will receive consideration for employment without regard to any of these factors. We strongly encourage candidates from all backgrounds to apply. This covers a Mid-Senior Engineer position supporting the various Integration products. Position: Senior Backend Developer (Must: .Net, Node & AWS)  Reports to: Engineering Manager / Engineering Team Lead Position Summary We are looking for skilled Mid-Senior Software Engineers to join our Engineering team supporting various Integration initiatives like Digital Payments (Node.js/AWS serverless stack), Data Integration (a .NET 8 / SQL Server backend service) and Building APIs. You will work across all three codebases — this is not a single-stack role — moving between a .NET console application backed by SQL Server and event- riven AWS Lambda microservices provisioned via Terraform, depending on sprint priorities. You will take ownership of engineering quality, architecture, and delivery across these systems, collaborating closely with SDETs and Product to ensure reliable, well-tested releases. Essential Functions - Design, build, and maintain features across our learning platform (LMS) and our payments/API systems. - Build and connect APIs that let our systems talk to each other securely, keeping employee-facing and public-facing access clearly separated. - Use AI coding tools like Claude or GitHub Copilot to speed up development — generating starter code, writing and reviewing tests, drafting documentation, and testing out ideas quickly. - Write clean, well-tested code and hold a high bar through code reviews and clear documentation. - Make sure the application runs fast, feels responsive, and works reliably even with a spotty connection. - Find, troubleshoot, and fix bugs and issues, including problems that come up in production. - Take part in team planning meetings and retrospectives as part of our Agile process. - Set up and maintain the cloud infrastructure our applications run on and keep it consistent across all our testing and production environments. - Take part in code reviews and help enforce our quality and coding standards. - Work closely with our QA/testing team to make sure new features are well tested before release. - Participate in an on-call rotation, providing production support and incident response outside standard business hours as needed. - Plan and execute product deployments that occur outside standard business hours, coordinating with the team to minimize disruption to the business. Skills and Abilities Required Must-Haves: -  Proficiency in C# (.NET 8) and T-SQL / SQL Server. -  Proficiency in JavaScript/Node.js and building serverless applications on AWS (Lambda, API Gateway, SQS, EventBridge etc.). -  Experience with RDS/PostgreSQL or similar relational databases. - Hands-on experience with Terraform for infrastructure as code. - Experience with CI/CD pipelines (Azure Pipelines or equivalent). - Experience building and consuming REST APIs. - Understanding of event-driven and microservices architecture. Nice-to-Haves: - Experience with SCIM 2.0 or identity/access management systems. - Experience with Dynatrace or similar APM/observability tooling. - Experience with DACPAC-based SQL Server deployment workflows. - AWS certification (e.g., Solutions Architect Associate). - Experience in payments, fintech, or restaurant/retail technology domains. Education Bachelor’s degree in computer science, Engineering, or related field, or equivalent practical experience. Experience - 4–8 years of professional software engineering experience. - Experience delivering production software across multiple, architecturally distinct systems preferred. - Experience working in Agile or team-based development environments preferred. Accountability / Scope - People Management: No. - Scope: Individual contributor responsible for delivering assigned software components/features across multiple project/products - Decision Making: Makes implementation decisions within defined designs, standards, and guidance. - Work Schedule: Requires participation in an on-call rotation and availability for off-hours deployments and incident response. Travel Requirements - Minimal to none.