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 6+ years of professional experience as a Full-Stack Developer Minimum 5 years of experience with React and modern front-end development. Minimum 2 years of experience with Node.js or 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

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/Node.js 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