Senior Software Development Engineer In Test Jobs in Colorado

Position Summary

This role requires someone who can operate independently and take ownership of automation across both service-level and cross-service testing.

Design and implement automated testing strategies for a distributed microservices architecture

• Build and maintain service-level (unit + integration) automated tests for TypeScript/Node.js services
• Develop cross-service integration tests to validate APIs, contracts, and workflows
• Create and evolve reusable automation frameworks for backend and API testing
• Integrate tests into CI/CD pipelines to provide fast, reliable feedback
• Collaborate with engineers to embed testing into the development lifecycle
• Identify gaps in coverage and drive improvements in system reliability
• Troubleshoot flaky tests, distributed system issues, and test environment challenges

About the Team

Powerful entertainment experiences come from brilliant teams, and at VIZIO, we work together to deliver the latest SmartCast TV and Sound Bar Technologies across the world. We are skilled engineers who care about the people they work with, the work they create, and the teams they nurture. At VIZIO we’re built around supporting each other in a relaxed, collaborative environment. We’re focused on learning, doing something new and valuable, and encouraging our team to do the same. With flexible work hours, a collaborative open-door environment, and teams who support each other in and out of the office, our work experience becomes meaningful. (And we don’t focus on hierarchy; instead, we work together to create the roles we’re most excited about). Now we need a brilliant Sr Software Engineer to join us and own the development of our features through the full-release lifecycle.

About the Role

We are looking for a driven Software Development Engineer in Test (SDET) to support a backend-heavy, microservices-based architecture built primarily in TypeScript. This is a high-impact role focused on improving reliability, accelerating development velocity, and embedding quality into the engineering culture.

What You Bring:

- 4+ years of experience in an automation-focused role (SDET, QA Automation Engineer, or similar)
- Strong experience testing backend systems and microservices architectures
- Proficiency in TypeScript/JavaScript and experience with Node.js services
- Strong proficiency in TypeScript and/or C#; experience in Python or Go is a plus
- Working knowledge in Postman API
- Hands-on experience with automation tools/frameworks (e.g., Jest, Mocha, Playwright, Supertest, or similar)
- Experience with API, integration, and contract testing (e.g., Pact or similar)
- Familiarity with CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI, etc.)
- Solid understanding of distributed systems (service dependencies, retries, eventual consistency)
- Ability to operate independently and take ownership of ambiguous problems

Nice to have: experience with event-driven systems (Kafka, RabbitMQ), Docker/Kubernetes, Test containers, observability tools, and performance testing.

Growth & Impact

This role starts with a strong focus on building a scalable automation foundation across our services. As that foundation matures and becomes embedded within the team’s workflows, ownership of automation will increasingly shift to the broader engineering team. Over time, this role is expected to evolve into a more traditional Software Engineer position, with opportunities to:
- Build and ship backend features
- Contribute directly to service development
- Help maintain and extend the automation ecosystem as a shared team responsibility

We’re looking for someone who is excited to lead the automation effort early and grow into a broader engineering role as the team scales.

At Walmart, we offer competitive pay as well as performance-based bonus awards and other great benefits for a happier mind, body, and wallet. Health benefits include medical, vision and dental coverage. Financial benefits include 401(k), stock purchase and company-paid life insurance. Paid time off benefits include PTO (including sick leave), parental leave, family care leave, bereavement, jury duty, and voting. Other benefits include short-term and long-term disability, company discounts, Military Leave Pay, adoption and surrogacy expense reimbursement, and more. You will also receive PTO and/or PPTO that can be used for vacation, sick leave, holidays, or other purposes. The amount you receive depends on your job classification and length of employment. It will meet or exceed the requirements of paid sick leave laws, where applicable. For information about PTO, see https://one.walmart.com/notices. Live Better U is a Walmart-paid education benefit program for full-time and part-time associates in Walmart and Sam's Club facilities. Programs range from high school completion to bachelor's degrees, including English Language Learning and short-form certificates. Tuition, books, and fees are completely paid for by Walmart.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to a specific plan or program terms.

For information about benefits and eligibility, see One.Walmart.

The annual salary range for this position is $99,000.00 - $198,000.00. Additional compensation includes annual or quarterly performance bonuses. Additional compensation for certain positions may also include:
- Stock

Minimum Qualifications

Outlined below are the required minimum qualifications for this position. If none are listed, there are no minimum qualifications.

• Option 1: Bachelor's degree in computer science, computer engineering, computer information systems, software engineering, or related area and 3 years’ experience in software engineering or related area.
• Option 2: 5 years’ experience in software engineering or related area.

Preferred Qualifications

Outlined below are the optional preferred qualifications for this position. If none are listed, there are no preferred qualifications.

• Master’s degree in Computer Science, Computer Engineering, Computer Information Systems, Software Engineering, or related area and 1 year's experience in software engineering or related area.
• We value candidates with a background in creating inclusive digital experiences, demonstrating knowledge in implementing Web Content Accessibility Guidelines (WCAG) 2.2 AA standards, assistive technologies, and integrating digital accessibility seamlessly. The ideal candidate would have knowledge of accessibility best practices and join us as we continue to create accessible products and services following Walmart’s accessibility standards and guidelines for supporting an inclusive culture.

Primary Location

55 Madison St, Denver, CO 80206-5419, United States of America

Walmart and its subsidiaries are committed to maintaining a drug-free workplace and has a no tolerance policy regarding the use of illegal drugs and alcohol on the job. This policy applies to all employees and aims to create a safe and productive work environment.