Summary: Kendago seeks a Senior Full-Stack Developer to join their R&D team, focusing on a React-based funnel engine critical to business activity and technological vision. Highlights: 1. Key role in building Kendago's core technologies 2. Front-end-leaning full-stack role in a collaborative environment 3. Opportunity to impact business performance directly **Kendago** is a global AdTech leader leveraging advanced digital optimization and creative technologies to profitably scale some of the world’s most successful DTC brands. We are looking for a **Senior Full\-Stack Developer** to join our growing R\&D team. This role is a key addition to a small, high\-impact engineering group building one of Kendago’s **core technologies** — a **React\-based funnel engine** that sits at the heart of Kendago’s business activity and long\-term technological vision. This is a **front\-end–leaning full\-stack role (approximately 70% front\-end / 30% back\-end)**, ideal for someone who thrives in an intensive, collaborative environment and enjoys building scalable, flexible systems that directly impact business performance. Requirements: * **5–6\+ years of professional experience** as a Full\-Stack Developer * Strong hands\-on experience with **React** and modern front\-end development * Solid back\-end experience with **Python development** * **Strong understanding of TypeScript and modern JavaScript** * **Strong understanding of databases, data structures, and data flow across web components**, with the ability to design and implement complex data processes * Proven experience working on **complex, flexible front\-end systems or engines** * Strong system design, architecture, and problem\-solving skills * Experience working with **AWS** or similar cloud platforms * Excellent English proficiency (spoken and written) * Ability to work independently while maintaining close collaboration within a remote team Responsibilities: * Expected to align with the team from **9:00 to 18:00 Israel time**, including working on **Sundays** initially. * Design, develop, and maintain scalable, high\-quality web applications, with a strong focus on **front\-end development using React** * Take ownership of features end\-to\-end, from design and architecture to implementation and optimization * Develop and maintain robust server\-side services and APIs using **Python** * Work closely with team members in a **highly collaborative, fast\-moving Agile (Kanban\-based) environment** * Participate in system design discussions and contribute to architectural decisions * Ensure code quality through testing, reviews, and performance optimization * Take part in QA processes for internal development as well as external client funnels * Communicate technically with internal and external stakeholders when required * Act as a strong **team player**, **sharing ownership**, **responsibility**, and **knowledge** within a tightly connected team Biz Dev: R\&D Remote/Part time: Remote