[Remote] Senior Full-Stack Engineer

Note: The job is a remote job and is open to candidates in USA. Wunderkind is a performance marketing solution that uses AI and data to help brands acquire and retain customers. They are seeking a Senior Full-Stack Engineer to deliver their advertising roadmap by building and scaling campaign placements and triggers, integrating demand sources, and improving auction flows, while also evolving tooling and reporting for advertisers and publishers.ResponsibilitiesDesign, build, and maintain full stack product capabilities across backend services, APIs, frontend interfaces, and internal tools that support Wunderkind AdvertisingImplement supply-side product capabilities such as new placements, trigger logic, refresh behavior, and multi-campaign activation rules across onsite, in-app, and adjacent ad surfacesBuild frontend and backend workflows that support advertiser and publisher use cases, including segmentation controls, placement configuration, campaign setup, and bulk-edit or operational toolingContribute to demand-side integrations and optimization work, including SSP onboarding, OpenRTB request / response handling, auction logic, curation flows, and traffic-shaping or path-optimization capabilitiesPartner closely with product managers, designers, and engineers to translate roadmap items into clear technical designs, scoped milestones, and production-ready implementationsDevelop reporting and observability capabilities that improve visibility into bids, impressions, inventory, advertiser outcomes, and platform healthWrite clean, modular, testable code and uphold strong engineering standards through code reviews, documentation, and thoughtful system designHelp shape architecture and delivery decisions around latency-sensitive systems, event-driven workflows, privacy-aware data handling, and operational reliabilitySupport production readiness by contributing to monitoring, troubleshooting, incident response, and ongoing platform improvementsSkills5+ years of professional software engineering experience, including substantial hands-on experience in both backend and frontend developmentStrong proficiency in at least one backend language such as Go, Java, or similar, with experience building production APIs, services, and integrationsStrong proficiency in modern frontend development, ideally with React and TypeScript, including experience building product configuration or operational interfacesExperience designing and integrating with RESTful APIs, event-driven systems, and service-oriented architecturesAbility to model and implement business logic for campaigns, placements, segmentation, reporting, or workflow configuration in a scalable and maintainable waySolid understanding of distributed systems fundamentals, production debugging, observability, and performance considerationsAbility to reason about ad-tech concepts such as supply and demand flows, SSP integrations, OpenRTB, VAST, impression / click tracking, creative metadata, privacy signals, and latency-sensitive request pathsExperience working with telemetry, analytics, or event streams to power reporting and operational visibilityComfort working across the full delivery lifecycle: discovery, technical design, implementation, testing, deployment, and post-launch supportStrong problem-solving skills, attention to detail, and the judgment to make pragmatic trade-offs in ambiguous environmentsAbility to work independently and autonomously without requiring constant supervisionExcellent communication and collaboration skillsExperience in the Ads, CTV, SSP, DSP, OEM, or broader ad-tech space is a strong assetFamiliarity with OpenRTB, VAST, impression / click tracking, privacy signals, and creative rendering workflowsExperience building configurable campaign, placement, segmentation, or rules-based product capabilitiesExperience with advertiser reporting, publisher tooling, dashboards, or bulk-edit / operations interfacesExperience with Kubernetes, service-oriented architectures, queues / streams, or observability toolingExposure to video, image, or creative-processing pipelines, including asset packaging or transformation flowsCompany OverviewWunderkind enables brands to better recognize their customers online, providing 1-to-1 marketing at scale. It was founded in 2010, and is headquartered in New York, New York, USA, with a workforce of 501-1000 employees. Its website is https://www.wunderkind.co.Company H1B SponsorshipWunderkind has a track record of offering H1B sponsorships, with 2 in 2024, 5 in 2022, 3 in 2021. Please note that this does not guarantee sponsorship for this specific role.