AI Platform Engineer – Lead

🕒 January 29

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Kayzen

WebsiteLinkedInAll Job Openings

51 - 200 employees

☁️ SaaS

🤝 B2B

💰 $4M Seed Round on 2020-01

Advertising • SaaS • B2B

Kayzen is a leading mobile programmatic advertising company, specializing in providing in-house mobile bidding technology. Built from the ground up, Kayzen empowers advertisers, app developers, agencies, and media buyers to run programmatic campaigns with full transparency and control over data. With solutions tailored for SKAdNetwork, user acquisition, and retargeting, Kayzen offers advanced optimization strategies and insights. Its platform is known for superior data sharing, privacy, and performance, democratizing mobile programmatic marketing by removing the reliance on traditional "black box" service platforms. Kayzen's SaaS solution allows businesses to customize and control their media buying processes, aiming for higher return on ad spend (ROAS).

📋 Description

• Design and build internal AI frameworks, SDKs, and shared libraries • Enable teams to integrate AI features with minimal friction • Set up standardized patterns for using LLMs, embeddings, agents, and workflows • Build reusable components for prompt management, evaluation, observability, and safety • Define best practices for AI usage, cost control, and reliability • Evangelise AI internally through documentation, examples, and hands-on guidance • Rapidly prototype AI-powered features and turn them into reusable building blocks • Own AI tooling from experimentation to production

🎯 Requirements

• Hands-on experience with LLM APIs (OpenAI, Anthropic, etc.) • Experience with RAG pipelines, embeddings, vector databases • Familiarity with prompt engineering, prompt versioning, and evaluation • Experience with AI orchestration frameworks • Understanding of AI observability, cost monitoring, and failure modes • You’ve shipped at least one LLM-powered feature to production and iterated based on telemetry or user feedback. • Comfortable with embeddings, fine-tuning, vector search, tokenization, and evaluation methodologies. • Familiar with data lakes/warehouses, feature stores, and streaming/batch ETL; cloud (AWS/GCP/Azure). • Excellent Python skills (required) • Experience building frameworks, platforms, or developer tooling • Strong understanding of APIs, services, and system design • Writes clean, maintainable, production-grade code • Bias for shipping and iteration • Can translate AI complexity into simple abstractions • Comfortable with ambiguity and rapid change • Thinks in terms of leverage and reuse, not one-off solutions

🏖️ 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