Senior Software Engineer

Job Description:
Overview
About Business Unit:
The Product team forms the crux of our powerful platforms and helps connect millions of customers worldwide with the brands that matter most to them. This team of innovative problem solvers develops and builds products that position Epsilon as a differentiator, encouraging an open and balanced marketplace built on respect for individuals, where every brand interaction holds value. Our full-cycle product engineering and data teams chart the future and set new benchmarks for our products, by using industry standard methodologies and sophisticated capabilities in data, machine learning, and artificial intelligence. Driven by a passion for delivering smart end-to-end solutions, this team plays a key role in Epsilon’s success story.
Role Overview:
You will design and maintain automated test suites for RESTful APIs and web applications, collaborate closely with developers, architects, and product teams, and help set a higher standard on quality across the software delivery lifecycle. This role is ideal for QA engineers who enjoy ownership, technical depth, and applying emerging technologies—including Generative AI—to improve test coverage, efficiency, and defect prevention at scale.
Why we are looking for you:
You are a hands-on, quality-focused engineer who: Enjoys building and maintaining scalable API and UI automation frameworks Has strong experience with tools such as Selenium, ReadyAPI, and Taiko (or similar browser automation tools) Is comfortable validating cloud-hosted applications and services (AWS and/or Azure) Is curious about Gen AI in QA automation—test generation, intelligent test data, self-healing tests, and AI-assisted defect analysis Likes taking ownership of test strategy and automation, not just executing manual test cases Thinks in terms of risk, coverage, and continuous quality—not only pass/fail outcomes
What you will enjoy in this role: As part of the Epsilon Product Engineering team, the pace of the work matches the fast-evolving demands of Fortune 500 clients across the globe As part of an innovative team that’s not afraid to take risks, your ideas will come to life in digital marketing products An open and transparent environment that values innovation, efficiency, and engineering excellence in quality Opportunity to work with modern stacks—.NET Core backends, Angular front ends, and cloud services—while deepening your automation and AI-in-QA expertise
Responsibilities
Design, develop, and maintain API automation frameworks and test suites for RESTful services built on .NET Core Build and enhance UI automation using Selenium and Taiko (or equivalent modern browser automation tools) for Angular-based web applications Create and maintain API functional, regression, and contract tests using ReadyAPI (and/or equivalent API testing tools) Integrate automated tests into CI/CD pipelines and work with DevOps/platform teams to improve test execution, reporting, and reliability Define and implement test strategies for new features—covering functional, regression, integration, smoke, and non-functional scenarios where applicable Validate cloud-native deployments and configurations on AWS and/or Azure Explore and apply Generative AI in QA automation—e.g. test case generation, synthetic test data, log/analysis assistance, and intelligent maintenance of automation assets Partner with developers, product managers, and UX on shift-left practices, acceptance criteria, and quality gates Identify, document, and track defects; perform root-cause analysis and help prevent recurrence Promote testability, clean automation design, reusable frameworks, and continuous improvement in the QA lifecycle Contribute to solution and test design discussions with technical leads and architects
Qualifications
BE / B.Tech / MCA (Full-time education; no correspondence courses) 5–8 years of hands-on software quality assurance experience, with a strong focus on test automation Proven experience in API automation testing for RESTful services Solid experience in UI automation testing using Selenium Hands-on experience with ReadyAPI (or comparable API automation platforms) for functional and regression API testing Experience with Taiko (or equivalent modern browser automation tools) for UI/end-to-end testing Working knowledge of Angular applications and .NET Core-based APIs from a testing perspective Working knowledge of AWS or Azure (deployments, environments, cloud concepts relevant to testing) Strong understanding of software testing principles, test design techniques, and defect lifecycle management Experience integrating automation into CI/CD pipelines (e.g. Jenkins, Azure DevOps, GitHub Actions, or similar) Proficiency in at least one programming/scripting language used for automation (e.g. C#, JavaScript/TypeScript, or Python) Excellent problem-solving, analytical, and communication skills
Good to Have (Nice-to-Have Skills): Experience applying Generative AI in QA—AI-assisted test authoring, test data generation, or automation maintenance Hands-on or exploratory experience with Agentic AI concepts applied to testing workflows Experience with Infrastructure as Code (Terraform) and test environments provisioned via automation Familiarity with performance, security, or accessibility testing Experience with BDD frameworks and behavior-driven test design Experience with test reporting dashboards, flaky-test management, and quality metrics/KPIs
Additional Information
Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. For decades, we’ve provided marketers from the world’s leading brands the data, technology and services they need to engage consumers with 1 View, 1 Vision and 1 Voice. 1 View of their universe of potential buyers. 1 Vision for engaging each individual. And 1 Voice to harmonize engagement across paid, owned and earned channels.
Epsilon’s comprehensive portfolio of capabilities across our suite of digital media, messaging and loyalty solutions bridge the divide between marketing and advertising technology. We process 400+ billion consumer actions each day using advanced AI and hold many patents of proprietary technology, including real-time modeling languages and consumer privacy advancements. Thanks to the work of every employee, Epsilon has been consistently recognized as industry-leading by Forrester, Adweek and the MRC. Epsilon is a global company with more than 9,000 employees around the world.
Our pillars aren't just words. They're how we show up every day. People centricity: We focus on employee well-being in an environment where colleagues truly care about each other. Collaboration: We work together, support one another, and collectively achieve goals. Growth: There are endless opportunities for growth through learning, development and career advancement. Innovation: We drive progress through cutting-edge solutions and forward-thinking approaches. Flexibility: We’ve created a balance between work and personal life, and we encourage adaptability to solve problems creatively.
Our values guide us to create value for our clients, our people and consumers. Act with integrity Work together to win together Innovate with purpose Respect all voices Empower with accountability
These pillars and values are our foundation—shaping our culture, guiding our decisions, and uniting us in common purpose.
Epsilon is an Equal Opportunity Employer. Epsilon is committed to promoting diversity, inclusion, and equal employment opportunities by using reasonable efforts to attract, recruit, engage and retain qualified individuals of all ethnicities and backgrounds, including, but not limited to, women, people of color, LGBTQ individuals, people with disabilities and any other underrepresented groups, traits or characteristics.