26.10.2026 aktualisiert

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Principal Product Manager | AdTech, Marketplaces & Platforms

Berlin, Deutschland
Berlin +500 km
M.Sc. Media Informatics, Lübeck University of Applied Sciences
Berlin, Deutschland
Berlin +500 km
M.Sc. Media Informatics, Lübeck University of Applied Sciences

Profilanlagen

John_Harder_CV_Almedia_Product_Lead_Adtech.pdf

Skills

Ad ManagerAngebotsmanagementProduct Lifecycle ManagementMessaging Application Programming InterfaceProduktmarketingIAd (Apple'S Advertising Platform)Cloud PlatformSalesforce Commerce CloudMarketing-TechnologieTerraformArtificial Intelligence Markup Language (AIML)Produktinformationsmanagementsystem
Product Leadership
Strategy and roadmaps, leading product organisations, KPI definition and tracking, Build-vs-buy decisions, stakeholder and partner management across cross-functional teams.

AdTech & MarTech
Expertise in programmatic advertising and RTB, retail media, auction and bidding systems, DSP, DMP and CDP, self-service platforms for partners, tracking, attribution and data protection.

Data & Cloud
Hands-on experience with Google Cloud Platform, BigQuery, Snowflake, Airflow, Cloud Run, Pub/Sub, Terraform and AWS, including data and reporting architecture.

Engineering & AI
Practical knowledge of Python, TypeScript, SQL, React, Node.js, REST APIs, Microservices, iOS/Android development with Capacitor, and production LLM systems.

Integration & Migration Architecture
Ownership of integration and migration architecture, including API and batch connections between internal and external systems, ad auction and bidding system migrations, and decommissioning of legacy services.

LLM-Based Content Classification
Introduction of LLM-based content classification and semantic matching between content and advertising partners, enabling automated ad content generation inside platforms.

Contextual Data Models
Development and maintenance of contextual categorisation models, data pipelines, testing and validation of model output, and translation of model results into recommendations for commercial and editorial stakeholders.

Mobile App Development
End-to-end founding and building of a consumer app including cloud strategy, user management, API and microservices, Android and iOS apps with Capacitor, and infrastructure as code with Terraform.

Erfahrung

Berufserfahrungmehr als 10 Jahre
Freelancer seit2024

Sprachen

DeutschMutterspracheEnglischverhandlungssicherSpanischGrundkenntnisse

Projekthistorie

Founder & Independent Product - Red Thread: Discover Home (iOS & Android)

redthread.world
Founded and built end to end, from concept to production: cloud strategy, user management, API and microservices, Android and iOS apps (Capacitor), infrastructure as code with Terraform. Production LLM services generate tours from location data and research, with text-to-speech narration. Built an accompanying voucher service that opened distribution through Viator, with Google Things to Do in preparation.

Principal Product Manager

nexxtep GmbH (employed; assigned to a leading German e-commerce platform)
Product Lead for a B2B marketing and advertising self-service platform used by several thousand marketplace partners. Led two engineering teams directly and steered delivery across four to five further platform teams. Built an in-house data platform with BigQuery, Snowflake, Airflow, Cloud Run, Pub/Sub and Terraform. Introduced LLM-based content classification and semantic matching. Owned integration and migration architecture including the ad auction and bidding system migration and decommissioning of legacy services.

Technical Product Lead - Contextual Data Models

BurdaForward GmbH
Led the development of contextual categorisation models with a team of software engineers and data scientists. Owned research and implementation of improved contextual models from business requirements through to validation. Built and maintained data pipelines and translated model results into recommendations for commercial and editorial stakeholders.

Lead Product Manager - MarTech Products

OTTO (GmbH & Co KG)
Functional and technical product leadership across a team of 20-25 developers, data scientists and data engineers. Set product vision, strategy, roadmap and KPIs. Established the strategic pillar for OTTO's retail media business, scaling partner self-service on a growing marketplace. Built strategic partnerships with Germany's leading digital marketers and shaped go-to-market with sales and marketing.

Initiator & Senior Product Manager - OTTO Display Network

OTTO (GmbH & Co KG)
Initiated and built a proprietary, real-time capable cloud advertising infrastructure for display, video and native formats on otto.de and across external web and app environments. Delivered core components including an in-house first-party data management system (CDP), ad performance tracking services, reporting dashboards, and self-booking frontends for external retailers.

Audio Engineer, studio and live events

Freelance, Germany-wide
Freelance audio engineer for studio and live events across Germany (alongside other roles).

Tools & Technology Manager - Display Advertising

OTTO (GmbH & Co KG)
Ran and developed OTTO's display ad stack including DSP and ad server setup and configuration via frontend and API, SOAP and REST integrations, web and app retargeting.

Technical Working Student, Real Time Advertising

OTTO, Hamburg
Technical working student role in the Real Time Advertising team at OTTO, Hamburg.

IT Administrator

Die Telekanzlei Lindow & Partner, Hamburg
IT Administrator at Die Telekanzlei Lindow & Partner in Hamburg.

Information Technician

Gundlach SEEN MEDIA GmbH, Hamburg
Information Technician at Gundlach SEEN MEDIA GmbH in Hamburg.

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