Job Title: Lead Full-Stack Engineer Company Name: OnSpot Data Job Url: https://builtin.com/job/lead-full-stack-engineer/8979990 Job Description: OnSpot Data Lead Full-Stack Engineer Job Posted Yesterday Posted Yesterday Hiring Remotely in Denver, CO, USA In-Office or Remote 120K-180K Annually Mid level AdTech • Big Data SaaS Data and Analytics The Role Design and maintain full-stack applications for AdTech, develop scalable backend services, and integrate AI/ML models while optimizing systems for performance and compliance. Summary Generated by Built In Full Stack Developer (AdTech Focus) About the Role We’re looking for a Full Stack Developer with strong experience building scalable, data-driven web applications and a deep interest in advertising technology. You’ll work across the stack to design, build, and optimize systems that power digital advertising workflows—such as audience targeting, ad serving, attribution, reporting, and real-time analytics. You will also help us leverage AI and machine learning to build smarter, more predictive advertising systems. This is a fully remote role. This role sits at the intersection of engineering, data, media, and AI, and is ideal for someone who enjoys solving complex problems at scale in a fast-moving AdTech environment. What You’ll Do Design, build, and maintain full-stack applications supporting AdTech use cases (campaign management, targeting, attribution, measurement, reporting) Develop scalable backend services and APIs for high-volume, low-latency data processing Build intuitive, performant front-end experiences for internal tools and customer-facing dashboards Work with large datasets including event streams, impression logs, and conversion data Collaborate with product, data, and analytics teams to translate advertising requirements into technical solutions Optimize systems for performance, reliability, and scalability under real-time traffic Implement data privacy, consent, and compliance considerations (GDPR, CCPA, etc.) Participate in architecture decisions, code reviews, and technical roadmap planning Integrate AI/ML models and pipelines into advertising products (e.g., predictive bidding, audience modeling, anomaly detection)   Required Qualifications 3+ years of experience as a Full Stack Developer or Software Engineer Strong proficiency in modern backend languages and frameworks (e.g., Scala, Python, Java) Experience building APIs (REST and/or GraphQL) Strong front-end experience with modern frameworks (Vue, React) Solid understanding of relational and NoSQL databases (Postgres, MySQL, etc.) Experience working with cloud platforms (AWS, GCP, or Azure) Familiarity with event-driven architectures, message queues, or streaming platforms (Kafka, Pub/Sub, Kinesis) Strong problem-solving skills and ability to work independently in a fast-paced environment AdTech / Domain Experience (Strongly Preferred) Experience in AdTech, MarTech, or media platforms Understanding of digital advertising concepts such as: DSPs, DMP’s, SSPs, ad exchanges Audience targeting and segmentation Attribution models and measurement Programmatic, CTV, mobile, and location-based advertising Experience working with large-scale event data (impressions, clicks, conversions) Familiarity with identity, cross-device graphs, or ID resolution Knowledge of privacy-safe data handling and consent frameworks Nice to Have Experience with real-time bidding (RTB) systems Data engineering experience (ETL pipelines, Spark, BigQuery, Redshift) Experience with feature flags, A/B testing, or experimentation platforms Familiarity with CI/CD pipelines and infrastructure as code Prior work in high-scale, high-throughput systems What We Offer Opportunity to work on cutting-edge advertising technology at scale Competitive salary and equity (if applicable) Flexible work environment Collaborative, engineering-driven culture Real ownership over architecture and product direction   Read Full Description Top Skills AWS Azure GCP GraphQL Java Kafka Kinesis MySQL Postgres Pub/Sub Python React Rest Scala Vue