Full Stack Developer

Full Stack DeveloperEpsilon powers connected marketing by unlocking the full potential of data and identity. As a Full Stack Developer on the Automation & Infrastructure team, you'll build and support internal applications and integrations that automate workflows and help operational teams work more efficiently. You'll work directly with internal users and project teams to understand their workflows and turn requirements into practical software solutions. In this mid-level role, you'll independently own clearly scoped features and improvements through development, testing, deployment, and ongoing support, collaborating with senior engineers on broader architecture decisions.ResponsibilitiesBuild and maintain usable, accessible web applications using TypeScript and modern frontend frameworks.Develop secure, well-structured APIs and backend services using Node.js and frameworks such as NestJS or Express.Write clean, maintainable code and automated tests appropriate to the change.Participate in code reviews and contribute to shared development practices.Troubleshoot application and integration issues using logs, monitoring, and other diagnostic tools.Work with internal users to clarify requirements, validate workflows, and improve existing applications.Contribute to AI-enabled application features and workflow automation where appropriate.QualificationsBachelor's degree in Computer Science or a related field, or equivalent practical experience.2+ years of professional software development experience, including experience delivering and supporting production applications.Strong proficiency in TypeScript and experience with Angular or another modern frontend framework.Experience building backend applications and APIs with Node.js and frameworks such as NestJS or Express.Experience building data-driven web applications and integrating with internal or external APIs.Working knowledge of relational databases and SQL, such as PostgreSQL or MySQL.Experience writing automated tests and troubleshooting application issues.Proficiency with Git and collaborative development workflows.Experience developing or supporting applications in Linux-based environments.Ability to break work into manageable increments, communicate progress and dependencies, and raise blockers or priority conflicts early.Ability to clarify requirements with technical and non-technical partners and explain technical decisions clearly.Epsilon operates in 30+ countries across EMEA, the Americas and APAC, with more than 8,000 employees. Because you matter, Epsilon offers perks and benefits that put you, your family and your finances first. Our benefits encompass a wide range of offerings, including but not limited to: flexible time off, parental leave, childcare assistance, comprehensive health coverage, 401(k), tuition assistance, commuter benefits, professional development, charitable donation matching, health coaching and counseling.Epsilon is an Equal Opportunity Employer. Epsilon's policy is not to discriminate against any applicant or employee based on actual or perceived race, age, sex or gender (including pregnancy), marital status, national origin, ancestry, citizenship status, mental or physical disability, religion, creed, color, sexual orientation, gender identity or expression (including transgender status), veteran status, genetic information or any other characteristic protected by applicable federal, state or local law. Epsilon also prohibits harassment of applicants and employees based on any of these protected categories.Compensation Range: USD $73,500.00 - USD $136,500.00/Annually.