**Job Summary**:
This is not a QA-at-the-end role.
You'll be in the room when we design services, shaping what 'done' means before a line of code is written.
You'll execute against an established QA strategy and set of frameworks, with QA leadership provided by a senior team member who has deep context on how everything fits together.
Your focus is on building and running great tests - across unit, integration, contract, and end-to-end layers.
Because Platform services are consumed by many products simultaneously, a defect here is a defect everywhere.
You'll own quality as a first-class concern, not an afterthought.
**Duties and Responsibilities**:
- Design, build, and maintain automated test frameworks across unit, integration, contract, and end-to-end layers for Node.js shared services.
- Participate in service design and API reviews from day one, contributing a quality-engineering perspective before implementation begins.
- Build and maintain CI/CD test pipelines that give the team fast, reliable feedback on every commit.
- Own test coverage for multi-tenant scenarios: tenant isolation, data separation, per-tenant configuration, and cross-tenant security boundaries.
Write and maintain automated tests against AWS-native infrastructure - Lambda, EventBridge, SQS/SNS, API Gateway
- including event-driven and async patterns.
- Define and enforce API contract testing so downstream product teams can integrate with confidence.
- Instrument test runs for observability: flakiness tracking, coverage trends, and test health dashboards.
Monitor and track quality metrics - test coverage trends, defect escape rates, flakiness
- and surface insights to the team regularly.
- Validate rollback and recovery behavior: ensure services degrade gracefully and recover correctly under failure conditions.




- Identify and drive resolution of systemic quality gaps; bring data, not just opinions.
- pairing, code reviews, and shared ownership of what we ship.
**Education and Experience**:
- 4+ years of SDET or quality engineering experience working on production back-end systems.
- Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
Experience testing microservices and event-driven systems
- you know how to test async flows, not just synchronous request/response.
- Solid experience with CI/CD pipelines and integrating test suites into them (GitHub Actions, CircleCI, or similar).
- Experience testing against cloud infrastructure, ideally AWS.
- Experience testing multi-tenant SaaS platforms, especially around isolation and security boundaries.
- Hands-on experience with AWS serverless specifically: testing Lambda functions, EventBridge rules, and SQS/SNS workflows.
- Experience with performance and load testing frameworks (k6, Artillery, or similar).
- Experience testing payments integrations or familiarity with PCI compliance requirements.
- Experience with infrastructure-as-code and testing infrastructure changes (SAM, CloudFormation, or similar).
- Experience working with AI-assisted development tools in a production codebase.
**Knowledge, Skills and Abilities**:
- Strong understanding of relational databases (we use PostgreSQL) and how to test data integrity and migrations.




- Excellent written and verbal communication.
Much of our team is distributed, so clear async communication matters.
- Highly motivated, self-guiding, and a constant learner who still loves contributing to team design and discussion.
- Solid experience writing tests in JavaScript or TypeScript, with frameworks like Jest, Mocha, Playwright, or Selenium; familiarity with the Page Object Model (POM) pattern is a plus.
- Hands-on experience with API testing and contract testing (Pact or equivalent).
**Work Environment**:
- Office setting with a moderate noise level.
- The employee will work at an individual workstation, using a telephone and computer.
**- Physical Demands**:
- Must be able to remain seated for extended periods.
- Regular use of a computer and other office machinery, such as printers and copy machines.
- Occasional movement around the office.
- Frequent communication via telephone.
**- Neumo Summary**:
With the backing of four decades of public sector expertise and corporate capability, Neumo has successfully supported government services.
Neumo was honored and recognized for four (4) consecutive years as a GovTech 100 Company representing the top 100 companies focused on making a difference in and selling to state and local government agencies across the United States.
Neumo is committed to helping communities thrive and brings a wealth of experience combined with innovation.
Today, Neumo offers more administrative and financial support to government officials than any other organization.
And with a responsive, client-focused approach, we foster partnerships that give our customers the certainty they need to accomplish more.
Neumo offers a competitive benefits and compensation packa

📌 Software Development Engineer In Test (Sdet) (Mexico)
🏢 Neumo Holdings
📍 Guadalajara