Product Engineer (Node.js / React / AdTech) – Contract (6+ Months, Extension Likely)Location: Remote (EU Time Zones)Contract Length: 6 months – strong potential for long-term extensionsStart: ASAPTech Stack: Node.js, React, APIs, Social/YouTube integrations, AdTech, Creator/UGC discoveryAbout the RoleWe’re looking for a highly experienced Product Engineer to help build a next-generation AdTech platform, supporting categories such as beauty, lifestyle, UGC, and topic-based recommendations for a Euro Retail and Marketing powerhouse. This contract role sits inside a fast-moving, cross-functional product team building internal tools and white-labelled solutions used across wider business units. You’ll be responsible for scoping, designing, and developing features end-to-end — from backend services to polished, user-friendly front-end experiences.This is a hands-on build role, perfect for an engineer with strong product instincts and experience delivering consumer-facing or AdTech-driven discovery systems.Key ResponsibilitiesProduct Engineering & Feature OwnershipBuild and evolve a creator discovery solution end-to-end using Node.js and ReactOwn product features from concept → prototype → implementation → iterationWork closely with product managers, data teams, and internal partners to define requirementsRapidly test, validate, and iterate on user workflows and ranking experiencesAPI & Platform IntegrationsIntegrate with social-platform APIs (e.g., YouTube Data API, Instagram, TikTok, Pinterest)Develop services to ingest, enrich, and structure creator data (categories, topics, UGC signals, relevance scoring)Optimise ingestion and discovery pipelines for performance and scaleAdTech & Recommendation WorkBuild components that support advertising partners, sponsorship matching, and creator-brand fitImplement logic for topic/category classification, recommendation ranking, and metadata structuringWork on internal tools and white-label solutions used by cross-functional teamsBackend & Frontend EngineeringBuild scalable backend services in Node.js (REST, GraphQL, event-driven services)Develop polished UIs in React, ensuring high usability and clarity for internal teamsEnsure strong code quality, automated testing, and reliable CI/CDCollaboration & DeliveryPartner closely with engineering leads, PMs, data scientists, and marketing/AdTech teamsOperate in a rapid, iterative environment with short feedback loopsParticipate in architectural decisions and contribute to long-term platform directionSupport a healthy engineering culture focused on velocity, clarity, and product impactRequired Experience5+ years as a product-focused engineerStrong hands-on experience with Node.js and ReactExperience integrating with social media APIs (YouTube essential; Instagram/TikTok/Pinterest a plus)Experience in AdTech, marketing tech, creator platforms, or discovery/recommendation systemsExperience building internal tools, dashboards, or white-label solutionsStrong product mindset — comfortable owning features, making trade-offs, and shipping iterativelyAbility to translate ambiguous ideas into clear technical plansStrong communication, stakeholder alignment, and cross-functional collaborationNice to HaveExperience with video/content metadata (categories, beauty, topics, “lookalike” discovery)Understanding of ranking, scoring, or classification modelsBackground with UGC/creator ecosystems (YouTube creators, UGC workflows, performance marketing)Experience with event-driven microservices or data pipelinesGraphQL experienceExperience in high-scale consumer-facing platformsWhy This Role?High-impact greenfield projectCentral to the business’ advertising & creator strategyAutonomy to shape the product and tech directionFlexible remote contract with extensions very likely