Senior Software Engineer

GumGum is a contextual-first, global digital advertising platform that uses advanced AI technology to serve captivating creative ads without the use of personal data. We believe that a digital advertising industry based on context rather than personal data builds a more equitable and less invasive future for the internet and is better for consumers, publishers and advertisers alike. Our blueprint for the future, The Mindset Matrix™, combines the power of context and creative in digital advertising to deliver superior attention and drive consumer action without sacrificing personal data.

The Ad Exchange development team is responsible for the technical development and operations of our Ad Exchange technology – a high‑volume, high‑traffic Java web service that handles roughly 40 million requests per minute. Technologies in use include Java, Spring, MySQL, Kafka, Aerospike, ScyllaDB, Memcached and more.

What You’ll Achieve

• Lead the design, development, and delivery of complex features and high‑volume web services written in Java, orchestrated with Spring, and using data from MySQL, ScyllaDB and Aerospike.
• Architect solutions with attention to performance, maintainability, and usability; solve ambiguous problems and execute on a solution with a diverse team of engineers across Data and Web.
• Set up integrations with supply‑side and demand‑side partners.
• Understand ML models and integrate new optimization models into Ad Exchange.
• Mentor and support junior and mid‑level engineers, fostering a culture of technical excellence, knowledge sharing, and continuous improvement.
• Write clean, maintainable, and well‑tested code following best practices; investigate and resolve production issues, ensuring application reliability and performance.
• Collaborate with Product and internal stakeholders to identify, prioritize and develop new features and improvements for the product.
• Improve the performance of the Ad Exchange, reducing latency and infrastructure cost.
• Take a leadership role in actively reviewing other teammates’ code and provide insightful feedback.
• Develop a deep understanding of the advertising industry to inform technical decisions and provide users with efficient applications.
• Use technology innovatively to implement privacy frameworks, ad‑tech features, and set up integrations with external partners.
• Contribute to internal documentation, technical blogs or presentations to elevate engineering visibility and learning.

Skills You’ll Bring

• B.S. in Computer Science or equivalent experience.
• 6+ years of experience as an engineer with strong Java/Spring skills.
• A history of successfully shipping products into production.
• Experience in taking ownership of end‑to‑end product implementation and providing stakeholder updates.
• Preferred experience in a high‑volume transaction system (>100 k transactions/second).
• Experience in Ad Tech, CTV and Real‑Time Bidding is a plus.
• Excellent communication skills and demonstrated ability to work with cross‑functional teams across time zones, including remote collaboration.
• Fast learner with excellent problem‑solving skills in highly complex multi‑threaded applications.
• Experience working with AWS and distributed systems such as Kafka, Aerospike or equivalent large‑scale data storage/processing systems.
• Experience with MySQL or similar RDBMS systems.
• Analytical thinking and understanding of complex logic.
• An understanding of RTB (Real Time Bidding protocol).
• Experience working with Git, Gradle, and CI/CD delivery pipelines.

What We Offer

At GumGum, competitive base pay is part of a total rewards package that includes benefits, recognition, development, and wellness. The estimated base pay range for this role is $172,000–198,000 annually. The total rewards package also includes an employer‑matched 401(k) retirement plan and, depending on the role, participation in a bonus, commission, or stock incentive program. Learn more about our U.S. benefits & perks package at gumgum.com/benefits.

GumGum is proud to be an equal‑opportunity employer. We are committed to building and delivering a diverse, inclusive, and equitable workforce that is representative of the world around us. All individuals are treated with respect and dignity and are given opportunity to succeed.