Sr. QA Test Automation Engineer

Job#: 3023464

Job Description:

Join a product delivery team responsible for a high-scale data ecosystem used for analytics and decisioning. This role focuses on automated validation of APIs, data transformations, and downstream reporting. You'll be hands-on in building automation that proves data correctness end-to-end-across ingestion, transformation, storage, and consumption.

What You'll Own

You will define and implement an automation approach that is data-aware-meaning your tests don't just click through UI flows; they verify data rules, lineage, and outcomes. You'll partner with engineers and data-focused stakeholders to continuously raise quality, reduce release risk, and improve observability of defects.

Key Contributions

* Build and evolve automation that validates services, pipelines, and data outputs across environments

* Create test strategies that cover functional risk, integration points, regression, and non-functional requirements

* Write automation utilities for repeatable dataset setup, assertions, and environment-ready test execution

* Execute API testing and performance baselining; identify bottlenecks and reliability risks early

* Investigate defects using logs, queries, and telemetry; communicate root cause and reproduction clearly

* Contribute to sprint planning, estimation, and release readiness; mentor peers in automation patterns

What You Bring

* 5+ years in QA automation / SDET / Quality Engineering roles

* Strong scripting ability (Python and/or Java) and experience building automation frameworks

* Experience testing analytics, data processing, or data‑driven platforms at scale

* Advanced SQL skills and comfort validating complex datasets in relational/warehouse environments

* Experience testing service-based architectures (REST APIs, event-driven workflows, batch/stream patterns)

* Familiarity with CI/CD, version control, and test reporting practices

* Bonus: exposure to IaC concepts, cloud security testing, or data governance validation

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package.

Our commitment to excellence is reflected in many awards, including Clearly Rated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process.  for more details.

Apex Benefits Overview:
Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a Support Linc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts.

In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach.

You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.

Employee Type:

Contract

Location:

St. Louis, MO, US

Job Type:

Date Posted:

February 23, 2026

Pay Range:

$70 - $85 per hour

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