QA Engineer

Vistar Media is the home of out-of-home (OOH). As a global ad tech company and the world's largest digital out-of-home (DOOH) advertising marketplace, we offer technology designed to make buying and selling OOH media easier. Our goal is simple : to help the world's marketers leverage OOH's unique ability to motivate and delight.

From strategic partnerships with major media owner networks to executing impactful campaigns with renowned global brands such as Nestlé, Porsche, Target, and Levi's, our team is filled with passionate, innovative, and collaborative problem solvers, engaging and entertaining consumers like you in the real world. Find your home in out-of-home - find your people at Vistar.

As of January 2025, Vistar Media was acquired by T-Mobile and is now part of T-Mobile Advertising Solutions. By combining our DOOH expertise with T-Mobile’s unique customer insights and expansive omnichannel capabilities, we’re creating new opportunities to innovate at scale and make a meaningful impact on the future of out-of-home media.

About the role :

As a QA Engineer, you will be responsible for building out test repositories and executing tests, while working with cross-functional teams to maintain quality and promote efficiency. This role involves requirement analysis, test planning, and test case development across our various platforms and services. This individual works to set standards and procedures within the team. This experienced engineer should be a team player and passionate about the team's success and the technology behind each product.

This position is not eligible for non-immigrant (H-1B, H-1B1, TN, E-3, L-1, etc.) or immigrant visa sponsorship (PERM and employment-based green card).

What you'll do :

Support QA efforts by planning, developing, and executing automated and functional tests against data-centric applications and systems.

Troubleshoot issues, report on findings, and escalate issues as necessary

Develop and enhance QA documentation and processes that contribute and support the team.

Understand the value derived from releasing quality code rapidly to production and when to iterate on the results.

Analyze data to identify trends in product quality or defects with a goal of mitigating and preventing recurrence and future defects.

What experience we're looking for :

3-5+ years of experience in a dedicated QA role, with a focus on data testing.

Bachelor's degree in Computer Science, Information Technology, Engineering, or a related quantitative field.

Strong proficiency in Python and SQL for complex querying, data manipulation, and analysis (e.g., joins, subqueries, aggregations, window functions).

Experience with database testing methodologies, including data integrity validation, schema validation, performance testing of database queries, and data migration testing.

Hands-on experience with at least one relational database system (e.g., PostgreSQL, MySQL, SQL Server, Oracle) and understanding of database concepts (ACID properties, indexing, normalization).

Familiarity with data warehousing, ETL processes, and Business Intelligence (BI) reporting concepts is a strong plus.

Experience with cloud platforms, Snowflake, dbt, Apache Airflow, Astronomer, Prefect, Great Expectations, and / or Soda Cloud are a plus.

Who you are :

Ability to analyze complex data sets to identify discrepancies, root causes, and potential data quality issues.

Strong with troubleshooting technical issues and reporting defects.

Curiosity and a strong desire to understand data flow and system architecture.

Adaptability to evolving requirements and technologies.

Excellent communicator that contributes in a timely manner.

Proactive and self-motivated with the ability to work independently and collaboratively within a team.

Strong communication skills (written and verbal) to articulate findings to both technical and non-technical stakeholders.

What we offer :

Flexible, fun start-up environment and culture.

An approachable and accessible C-Suite.

Comprehensive health benefits.

401k + match.

Quarterly Lifestyle Stipend.

Unlimited PTO and summer Fridays.

A flexible hybrid work environment, with a fully stocked kitchen, weekly catered lunches, and casual attire while in office.

Sponsored Volunteer Events and Vistar Gives Back program.

An awesome and supportive bunch of people to work with and learn from.

Recruiting fraud is a serious issue facing jobseekers. Please be aware that Vistar Media would never require personal information (such as bank account information) during the interview process. Should an employee from Vistar Media reach out to you, that communication will come from an @ vistarmedia.com email address. During a typical interview process, you will have several phone, video, and / or in-person interviews with multiple Vistar Media employees before a hiring decision is made. We do not require payment from applicants for training or other costs incurred, nor do we offer compensation before hiring.

If you’re ambitious, highly driven, and interested in making an impact, Vistar is the place for you. Apply to join our team… we’ll see you out there.