Senior FullStack Engineer

Our client is building a real-time, AI-native creative and optimization engine for programmatic advertising.
Our system generates creatives on the fly, analyzes every impression, and continuously evolves campaigns through live experimentation and AI-driven feedback loops.
We move fast, build intelligently, and rely on strong QA to maintain product quality across rapid development.

We are looking for a Senior Fullstack Engineer to architect and build the core product surfaces that advertisers use every day: campaign management, creative workflows, experimentation tools, and real-time insights.

This role is ideal for someone who loves owning a product area end-to-end, moving fast, and translating complex systems into simple, elegant user experiences. You will work across the stack, collaborate closely with AI, backend, and data teams, and have major influence on both product and technical direction.

Requirements:

• 6+ years as a fullstack engineer building production systems.

• Strong proficiency in React + TypeScript.

• Solid backend experience in Node.js / Python (TypeScript backend experience a big plus).

• Deep understanding of API design and client–server architectures.

• Experience building data-rich UIs (dashboards, insights, complex forms).

• Strong system design, product thinking, and attention to detail.

• Ability to work autonomously and deliver high-quality code fast.

• Comfort working in a fast-paced environment with high ownership.

• Upper-Intermediate English.
   

Responsibilities:

• Build and own major parts of company’s core application:

• Design and implement backend services and APIs in collaboration with AI and infrastructure teams.

• Translate complex logic (creative evolution, pacing, optimization, performance data) into clean, intuitive UX.

• Lead features from concept → architecture → implementation → production.

• Improve performance, reliability, and structure across frontend and backend codebases.

• Help establish engineering best practices, design patterns, and system architecture for a rapidly growing product.

• Work closely with product and founders to define requirements and ship quickly.
   

Nice to have:

• Experience with AdTech/DSP/RTB systems.

• Experience building experimentation or A/B testing systems.

• Experience with real-time data or event-driven architecture.

• Experience with performance monitoring and frontend instrumentation.

• Familiarity with design systems or component architecture.

• Exposure to AI-driven or tool-driven product workflows.

What we offer:

• Long-term employment with competitive compensation, based on experience.

• Possibility to work remotely.

• An open, transparent and fun work culture.

• Multi-national team and collaborative work environment.

• Work on a product unlike anything else in AdTech.

• Huge ownership: you will define how the platform works and feels.

• Build complex, high-impact systems with a small, elite engineering team.

• Shape the future of AI-driven, performance-optimized advertising.

• Your work will be seen and used by customers, immediately impacting performance and revenue.

• Career and professional growth opportunities.