[Hiring] Fullstack Team Lead @Kayzen

Role Description

We are looking for a coding-first Fullstack Team Lead who is as comfortable in the IDE as they are in a sprint planning session. You should be an early adopter of AI-assisted engineering (e.g., Claude Code, Cursor, Copilot) not just for your team's productivity, but in your own daily coding workflows. You will own the translation of complex product requirements into high-performance UIs while managing the 'execution gap' across your team's projects.

Responsibilities

• Lead and mentor a team of Fullstack engineers, fostering a culture of quality, ownership, and continuous improvement
• Hands-on contribution to the codebase — writing production code, conducting code reviews, and setting coding standards
• Collaborate closely with Product, Design, QA, and Backend teams to deliver cohesive, user-centric features
• Define and drive the Fullstack technical strategy, architecture, and roadmap
• Recruit, onboard, and grow fullstack engineering talent
• Hands-on AI Implementation
• Lead by example by integrating AI-powered coding agents and automated LLM-based testing into your own daily development cycle to set the pace for the team
• Architect and build 'AI-First' UI patterns, moving beyond static dashboards to generative, prompt-driven interfaces in collaboration with the LLM Platform team
• Manage the 'Execution Gap' within the Fullstack pod, ensuring that high-level product roadmaps are broken down into actionable, high-velocity engineering sprints with zero 'slippage'
• Drive 'Ruthless Prioritization' within the team to maintain a high delivery heartbeat, balancing technical debt with feature velocity

Qualifications

• 10+ years of professional Fullstack development experience with a majority of experience with modern JavaScript/TypeScript
• Deep expertise in at least one major framework (React, Angular, or Vue) and its ecosystem
• Strong understanding of HTML5, CSS3, responsive design, and cross-browser compatibility
• Experience building complex, data-heavy UIs with real-time data visualization
• Solid grasp of Fullstack performance optimization — bundle size, rendering, lazy loading, caching strategies
• Experience with state management patterns (Redux, MobX, Zustand, or similar)
• Proficiency with Fullstack testing methodologies — unit, integration, and end-to-end (Jest, Cypress, Playwright, or similar)
• Familiarity with design systems and component library development
• Experience using AI-assisted development tools (e.g., Claude Code) to boost engineering productivity

Requirements

• 2+ years of experience leading or managing a Fullstack engineering team is a must
• Proven track record of mentoring engineers and conducting impactful code reviews
• Experience defining Fullstack architecture for large-scale applications
• Strong understanding of APIs, RESTful services, GraphQL, and system design
• Ability to balance technical debt management with feature delivery
• Excellent communication skills — can articulate technical decisions to both engineers and non-technical stakeholders

Nice to Have

• Familiarity with ad-tech, real-time bidding platforms, or high-traffic data products
• Contributions to open-source Fullstack projects or community involvement
• Experience building Fullstack interfaces for AI/ML-powered products (e.g., chatbots, recommendation engines, AI-generated content displays)
• Familiarity with LLM APIs and prompt-driven UI patterns

Benefits

• Reporting directly to Co-founder & CTO
• Direct access to top management and an extremely “visible” role
• Exceptional career growth and learning opportunity
• A unique opportunity to be part of an experienced team of industry experts and entrepreneurs who bring massive change to the Adtech market
• A fun, driven, and multinational team located across Germany, India, UK, Argentina, Ukraine, Turkey, Spain, and many more countries
• A flexible work-from-home arrangement
• A 500-dollar home-office setup budget
• A 1000-dollar annual learning and development budget