Senior Fullstack Engineer

Who We AreadMarketplace is the largest global marketplace for Native Search advertising. For over 25 years, we’ve connected brands with consumers at the moment they express commercial intent beyond legacy search engines.Today, our Native Search solutions are exclusively integrated across next-generation platforms where discovery happens, including web browsers, Buy Now Pay Later apps, and AI chat surfaces. Powered by vector search technology, our platform delivers relevant text and product ads that match consumers with the brands, products, and offers they’re actively seeking.Our award-winning culture is grounded in the principles of Curiosity, Collaboration, Creative Conflict, Commitment, and Competitiveness – our 5Cs. These values drive us to turn complexity into clarity and create measurable value for consumers, advertisers, and publishers alike.The RoleWe are looking for an AI-first full-stack engineer to join Workflows team - building AI-native UI and agentic workflow Amplify platform. Amplify is a control plane for all advertiser & publisher activity within adMarketplace. You will own full-stack end-to-end projects - you’ll work closely with internal & external users, design, product, drive architecture and full stack implementation.Your work will have a direct and measurable impact on our revenue. You will have a clear career progression path and numerous opportunities for both personal and professional growth in an intellectually stimulating and dynamic work environment.What You'll Do:Deliver production-ready features that improve client-facing and internal product workflows.Build intuitive, reusable, and performant frontend experiences using React and other frontend technologies.Develop scalable, secure, and observable backend microservices using Java.Design and optimize database schemas, queries, indexes, and transactions.Improve system reliability, performance, maintainability, and code quality.Use AI-assisted development tools responsibly to increase productivity, testing quality, debugging speed, and documentation.Mentor engineers, contribute to technical design, and raise engineering standards across the team.Basic Qualifications:Technical / Functional SkillsBachelor’s degree in Computer Science, Engineering, or related technical field preferred, or equivalent practical experience.5+ years of professional software engineering experience.3+ years of hands-on experience with React and preferably TypeScript.3+ years of hands-on experience with Java (preferably Spring Boot)Experience working with relational databases, preferably MySQL.Experience designing and maintaining microservices and GraphQL/REST API endpoints.Experience with microservices, distributed systems, and production-grade applications.Strong understanding of software design principles, clean code, testing, refactoring, and maintainable architecture.Experience with CI/CD practices, automated testing, observability, and production support.Experience using AI-assisted development tools responsibly and effectively for prototyping, architecting, coding, debugging, testing, refactoring, documentation, and learning.Ability to validate AI-generated code for correctness, security, scalability, performance, and maintainability.Core CompetenciesStrong problem-solving and analytical thinking.Strong stakeholder management and communication skills.Sound technical judgment and ability to evaluate tradeoffs.High ownership, accountability, and delivery orientation.Ability to mentor engineers and improve team practices.Comfort operating in a fast-paced, evolving environment.Preferred QualificationsExperience querying analytical databases such as ClickHouse for reporting and product analytics.Experience with Kafka or similar event-driven technologies preferred.Experience in ad tech, search, marketplace systems, analytics, or high-scale transactional platforms is a plus.Compensation: $170,000 - $200,000 + bonus + equityJoin UsadMarketplace has been named as one of the best places to work in New York City by Built In and Crain’s- the latter of which have recognized us the past three years straight! AMP is currently experiencing triple digit growth, and it’s never been a better time to join our team!We offer a robust continuing education program, management training, regular company-wide lunch and learns, and well-defined career paths to ensure all our employees have an opportunity to grow.At adMarketplace, we play to win, but we learn from our setbacks. Our commitment to a collaborative environment means no one succeeds alone, and no one fails alone either.We know you’ve come to expect comprehensive healthcare, wellness programs, paid time off, commuter benefits, and 401k matching from any company, so it’s a good thing we offer all of that and so much more. adMarketplace offers Summer Fridays, catered lunches, a fully stocked kitchen, ZogSports teams, happy hours and corporate retreats to encourage a strong work/life balance.No Third Party Recruiters. We do not accept unsolicited agency resumes and we are not responsible for any fees related to unsolicited resumes.*This range represents the low and high end of the base salary someone in this role may earn as an employee of adMarketplace in the New York office. Salaries will vary based on various factors including but not limited to professional and academic experience; training; associated responsibilities; and other business and organizational needs. The range listed is just one component of our total compensation package for employees. Salary decisions are dependent on the circumstances of each hire.