Senior Software Engineer – Kotlin/Java, Python, React

• Build backend systems for brand measurement used by major advertisers
• Own features from customer problem through production
• Design and develop microservices and RESTful APIs for the analytics platform
• Build data pipelines processing large volumes of advertising and survey data
• Integrate LLMs and causal inference into production customer workflows
• Generate visualizations and plain-language campaign-performance insights through the internal AI analyst
• Build Python analytics services and React frontends when features span the stack
• Deploy and operate systems on Kubernetes and AWS
• Automate deployment through CI/CD and monitor systems with DataDog and Sentry
• Productionize statistical models with Data Science
• Shape features in collaboration with Product
• Mentor others and share technical knowledge

• 5+ years of experience across APIs, data systems, and distributed infrastructure
• Track record of clean architecture and reliable systems
• Experience building RDBMS-backed backends with Java/Kotlin, Spring Boot, Django, Rails, or Express
• Experience building single-page frontends in React, Vue, or Angular
• Knowledge of UI frameworks, microservice architectures, databases, and cloud platforms
• Experience using AI-assisted development tools such as Claude Code, Cursor, and GitHub Copilot
• Structured practices including testing, documentation, CI/CD, and code review
• Observability, cost, and reliability mindset
• Ability to mentor others and share knowledge
• Strong plus: Java, Kotlin, or Groovy with Spring Boot or Grails
• Strong plus: Presto and relational versus NoSQL tradeoffs
• Strong plus: AWS, Kubernetes, and Terraform
• Strong plus: React/Redux
• Strong plus: startup experience and comfort with ambiguity
• Strong plus: AdTech, MarTech, or measurement-platform experience

• Bonus
• Equity
• Benefits
• Remote work