Madhive is the leading independent and fully customizable operating system built to help local media professionals build profitable, differentiated, and efficient businesses. Madhive empowers sales teams to extend their reach into streaming and connects local advertisers with the communities they serve. Madhive’s platform provides the unique ability to reach local audiences at national scale, with premium supply partnerships and end-to-end tools for planning, targeting, and measuring full-funnel campaign outcomes. Powering campaigns for over 30,000 small and medium businesses per day, Madhive is driving the evolution of local media.  We’re looking for a Senior Software Engineer with experience in AdTech to join our Engineering team at Madhive. This person will help build and improve the systems that power our advertising platform, with work spanning both backend and client-facing features. You’ll work closely with engineers across the stack to ship reliable, well-tested software and contribute to the quality and evolution of our technology. This role is ideal for someone with hands-on experience in AdTech and who wants to deepen their impact in a fast-moving environment. This is a hybrid role, working 3 days a week at Madhive HQ in the Financial District of New York City, or our California Office, located in Redwood City. What you’ll do * Build and maintain features across our frontend and backend systems, with a strong emphasis on clean, robust, maintainable code. * Contribute to the design and implementation of user interfaces that give teams and clients strong visibility into system behavior and performance. * Support distributed backend systems with a focus on data accuracy, system reliability, and operational excellence. * Collaborate with teammates to enhance observability and monitoring through dashboards, alerts, and instrumentation. * Contribute to the design, implementation, and processing of AdTech-scale data pipelines and ML solutions. * Write comprehensive tests (unit, integration, end-to-end) and contribute to ongoing improvements in tooling, coverage, and quality. * Participate in meaningful code reviews, share feedback, and help drive alignment on technical decisions. * Collaborate with Product and Engineering partners to scope projects, refine requirements, and consistently deliver features on time. Who you are * 5+ years of experience as a full-stack engineer working with modern frontend and backend technologies. * Background in AdTech, including hands-on experience with bidding systems, inventory, supply, and related systems. * Experience with distributed systems, including Kafka or similar streaming technologies. * Excellent backend development skills - ideally using Golang, but experience with any modern backend language is welcome. * Strong experience with React or a comparable frontend framework preferred. * Familiarity with observability and monitoring tools such as Looker, OpenTelemetry, Centry, or New Relic. * A problem solver who enjoys working with high-throughput, low-latency production systems at scale. * A strong interest in data science and machine learning concepts, or hands-on experience with high-throughput, AdTech-scale data solutions. * Comfortable working with automated testing frameworks and contributing to an overall testing culture. * Strong communicator who works well with cross-functional teams and enjoys solving complex problems in a collaborative environment. * A thoughtful engineer who values reliability, usability, and building things the right way. The approximate compensation range for this position is $190,000-$220,000. The actual offer, reflecting the total compensation package and benefits, will be determined by a number of factors, including the applicant's experience, knowledge, skills, and abilities, as well as internal equity among our team. #LI-Hybrid We are Madhive Madhive is a dynamic, diverse, innovative, and friendly place to work. We embrace our differences and believe they fuel our creativity. We come from varied backgrounds and think that’s important. Whether it’s taking ideas from previous lives and applying them in different ways or creating something completely new, we are all trail-blazing team players who think big and want to make an impact.  We are committed to cultivating a culture of inclusion and collaboration. We welcome diversity in education, culture, opinions, race, ethnicity, gender identity, veteran status, religion, disability, sexual orientation, and beliefs. Please be advised that we will NOT be using third-party recruiting agencies for this search.