Senior QA Engineer

MarketOnce; Denver (CO); On-site; USD 100,000 - 140,000; Full time

Benefits offered by this job

Flexible vacation policy

401k with company contribution

Beautiful downtown Denver office with,

company-paid commuter benefits (RTD/Ec

Job summary

MarketOnce is hiring a Senior QA Engineer to build and lead QA across our software products. You will own quality throughout the delivery lifecycle and mentor a junior QA engineer as we grow the function. The role emphasizes hands-on manual and automated testing and evolving our test tooling.

You'll shape testing strategies, implement automated suites with TestNG, and integrate tests into CI/CD pipelines to accelerate releases. Strong collaboration with developers and product teams is essential.

Qualifications

• 5+ years in software quality assurance, incl. 3+ years in test automation.
• Hands-on TestNG design and maintenance of automated tests.
• Experience with UI automation and API testing in a Microsoft‑centric stack.

Responsibilities

• Own quality across the full software delivery lifecycle from requirements to release.
• Design and implement comprehensive test strategies for new features and existing apps.
• Develop and maintain automated tests with TestNG; update tests as the app evolves.
• Create and execute manual and automated test plans, cases, and regressions.
• Perform functional, regression, integration, and API testing.
• Collaborate with developers, analysts, and product owners on acceptance criteria.
• Identify, document, and track defects; work with the team to root cause issues.
• Integrate automated tests into CI/CD pipelines for faster releases.
• Mentor junior QA engineers and share testing best practices.
• Establish QA standards and processes across the team.

Skills

QA experience

Test automation

Java or similar

Selenium WebDriver

API testing

TestNG

SQL

Git & CI/CD

Agile/Scrum

Communication

Mentoring

Tools

TestNG

Selenium WebDriver

Postman

REST Assured

Azure DevOps

SQL Server

Git

Job description

At MarketOnce, we empower businesses with the insights and strategies they need to excel in today's dynamic market. With a strong foundation in market research, we offer innovative solutions in research, software, consulting, advertising, and marketing to corporate, private equity firms, and other organizations seeking to achieve their goals.

Our team is distinguished by their client‑centric approach—treating each client's business with the dedication and care as if it were their own. This commitment enables us to deliver personalized service and achieve the highest standards of success and innovation in everything we do. Together, our family of companies, including MarketOnce, ROI Rocket, and eAccountable, work towards delivering unparalleled solutions. Headquartered in Denver, Colorado, our global team collaborates from locations across the US and Europe.

We value curiosity, creativity, collaboration, and expertise, continuously striving to push boundaries and exceed our clients' expectations. Join us to be part of a culture that drives meaningful results.

About the Opportunity

We’re looking for a Senior QA Engineer to build and lead quality engineering for our software products. You’ll own quality across the software delivery lifecycle, with plans to grow the function by adding a junior QA engineer you’ll help mentor and develop.

This is a hands‑on role for someone experienced in both manual and automated testing who wants to shape how a team tests, not just execute test cases. We’re in the process of modernizing our test automation and development tooling, and you’ll play a key part in that evolution. You’ll help our engineers ship faster by improving how we test our products and building quality into every stage of development.

What You’ll Do

• Own quality across the full software delivery lifecycle, from requirements review through release
• Design and implement comprehensive test strategies for new features, enhancements, and existing applications
• Design, develop, and maintain automated test suites using TestNG, and update existing automated tests as the application evolves
• Create and execute manual and automated test plans, test cases, and regression suites
• Perform functional, regression, integration, and API testing
• Collaborate with developers, business analysts, and product owners to define acceptance criteria and testability requirements
• Identify, document, and track defects through resolution, working with the development team to find root causes
• Integrate automated tests into CI/CD pipelines to support continuous testing and faster releases
• Mentor junior QA engineers and provide guidance on testing techniques and tools
• Establish and promote QA best practices, standards, and processes across the team

What You Bring

• 5+ years of experience in software quality assurance, including at least 3 years focused on test automation
• Strong hands‑on experience designing and maintaining automated test suites with TestNG
• Proficiency in Java or a similar object‑oriented programming language
• Experience with UI automation tools such as Selenium WebDriver
• Solid experience with API testing using tools such as Postman or REST Assured
• Proven ability to write clear, thorough test plans, test cases, and regression suites
• Experience working in a Microsoft‑centric environment (e.g., .NET applications, Azure DevOps, SQL Server)
• Working knowledge of SQL for data validation and backend testing
• Experience with CI/CD pipelines and version control systems such as Git
• Familiarity with Agile/Scrum development methodologies
• Strong analytical and problem‑solving skills with close attention to detail
• Excellent communication skills and the ability to collaborate across technical and non‑technical teams
• Experience mentoring or leading other QA engineers

What We Offer

• Flexible vacation policy – take the time you need to recharge
• 401k with company contribution
• Beautiful downtown Denver office with company‑paid commuter benefits (parking or RTD EcoPass)
• Opportunity for career progression with plenty of room for personal growth

What to Expect

• 1st Round: 30‑45 minute interview with the Recruiter
• 2nd Round: 45‑minute interview with the Hiring Manager
• 3rd Round: Pre‑Interview Assessment and 2 hours of onsite interviews with the Hiring Team

Please note that we are fully onsite work environment, and require daily presence at our LoDo/Union Station (Denver) or Southpoint/Butler & 95 (Jacksonville) office. We are not considering remote, hybrid, or out‑of‑area candidates, and do not work with outside recruiting agencies.

MarketOnce will accept applications for this role on an ongoing basis.

MarketOnce is an Equal Opportunity Employer. We believe in creating a diverse and inclusive workplace where everyone has the opportunity to thrive. We are committed to hiring individuals based on their skills and qualifications, regardless of race, gender, age, sexual orientation, disability, or any other characteristic. We welcome and encourage applications from all backgrounds.