Senior SDET

RAPP Chicago is looking for a Senior SDET to join our award-winning Technology team. WHO WE ARE: We are RAPP – world leaders in activating growth with precision and empathy at scale. As a global, next-generation precision marketing agency we leverage data, creativity, technology, and empathy to foster client growth. We champion individuality in the marketing solutions we create, and in our workplace. We fight for solutions that adapt to the individual’s needs, beliefs, behaviors, and aspirations. We foster an inclusive workplace that emphasizes personal well-being. HOW WE DO IT: At RAPP, our fearless superconnectors help to create value from personal brand experiences by focusing on three key areas: connected data, connected content and connected decisioning. Our data analysts identify who that person is, our strategists understand what they want, and our award-winning technologists and creatives know how to deliver it – ensuring we’re able to activate authentic customer connections for our clients. Part of Omnicom’s Precision Marketing Group, RAPP is comprised of 2,000+ creatives, technologists, strategists, and data and marketing scientists across 15+ global markets YOUR ROLE: RAPP has a tradition that encourages entrepreneurial thinking, innovative solutions, and the conviction to executive. We seek individuals who thrive in fast-paced, problem-solving environments. We are looking for a talented Sr SDET with a specialty in performance engineering. YOUR RESPONSIBILITIES: Design, develop, and maintain automated test frameworks across functional, integration, and regression layers. Shift quality left by embedding in feature squads contributing to testable design, acceptance criteria, and code reviews. Own test automation integration within CI/CD pipelines (GitHub Actions, CodePipeline, Jenkins). Champion testing standards, patterns, and reusable tooling across engineering teams. Define and own the performance testing strategy covering load, stress, soak, spike, and chaos scenarios. Establish SLO/SLA baselines in collaboration with Engineering, Product, and Platform teams. Author performance testing standards and runbooks for org-wide adoption. Build and maintain performance test suites using k6, Gatling, or Locust scripted, version-controlled, and CI-integrated. Model realistic traffic patterns, data volumes, and concurrency profiles against AWS-hosted services. Design tests targeting API Gateway, Lambda cold starts, ECS/EKS container throughput, RDS/Aurora query latency, and SQS/SNS queue depth under load. Profile Lambda execution duration, memory utilization, and concurrency limits. Evaluate RDS/Aurora connection pool exhaustion, slow query patterns, and read replica lag under load. Automate baseline comparison runs on every release candidate; surface regressions before they reach staging. Integrate AWS Load Testing solutions (e.g., Distributed Load Testing on AWS, Artillery Cloud) for large-scale test execution. Deliver clear, business-contextualized performance reports to engineering leadership translating p99 latency and error rates into user and revenue impact. Maintain a performance health dashboard (CloudWatch dashboards or Grafana) visible to all engineering stakeholders. REQUIRED SKILLS • Bachelor’s degree in Computer Science, Systems Engineering, or related field. • 5+ years in software test automation with focus in performance engineering • Proficiency in Python or JavaScript. • Basic understanding of unit testing frameworks such as PyTest, Mocha, or Jest. • Exposure to API testing tools such as Postman or REST Assured. • Knowledge of Git or GitHub. • Familiarity with CI/CD tools such as GitHub Actions, Azure DevOps, or Jenkins. • Solid understanding of cloud platforms (AWS or Azure) and containerization (Docker). Our hybrid work model: RAPP's current hybrid model is designed to enable in-person connections and collaboration that is core to our culture, while also supporting flexibility for all employees. As such, we have the option to work from home two days per week, if we'd like. RAPP provides a competitive salary and comprehensive benefits plan. Benefits for this role include health/vision/dental insurance, 401(k), stock options, Healthcare & Dependent Flexible Spending Accounts, vacation, sick, and personal days and positive activism days, paid parental leave and disability benefits. For more information regarding Omnicom benefits, please visit www.omnicombenefits.com . A reasonable estimate of the salary for this role, at the time of posting, is $90,000 - $99,000. This range is specific to Chicago and multiple factors are considered in making compensation decisions including, but not limited to: skill set, experience and training, certifications; etc. This is an exempt position. If your requirements fall outside of this range, you are still welcome to apply. “As an EEO/Affirmative Action Employer all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status.” NOTE: This job description is not intended to be all-inclusive. Employee may perform other related duties as negotiated to meet the ongoing needs of the organization.