Senior Fullstack Engineer
Core
Design, build, and maintain high-performance user-facing applications and interfaces for a mobile demand-side platform (DSP), including self-serve dashboards and real-time reporting suites.
Role type
Senior Fullstack Engineer (Individual Contributor)
Builds
User-facing applications, self-serve campaign management dashboards, real-time reporting suites, and internal tooling for the Kayzen Console team.
Domain
Ad-tech / Programmatic Advertising / SaaS
Deliverable
product features
Required skills
Fullstack development (JavaScript/TypeScript), React/Angular/Vue, HTML5/CSS3, data-heavy UIs, real-time data visualization, performance optimization, state management, testing methodologies, AI-assisted development tools
Preferred skills
Ruby on Rails, ad-tech experience, high-traffic data products, open-source contributions, AI/ML-powered interfaces, LLM APIs
Technologies
JavaScript, TypeScript, React, Angular, Vue, HTML5, CSS3, Redux, MobX, Zustand, Jest, Cypress, Playwright, RESTful services, GraphQL
Responsibilities
Design and build fullstack features from UI to API integration; write clean, tested production code; collaborate with Product, Design, QA, and Backend teams; contribute to architecture and tooling decisions; take end-to-end ownership of features; integrate AI-powered coding agents and automated testing; break down requirements into actionable tasks; balance feature delivery with technical debt.
Seniority
Senior, hands-on IC