Software Engineer II, Ad Apps

GumGum

GumGum

Software Engineering
Santa Monica, CA, USA
USD 148k-167,500 / year + Equity
Posted on Nov 15, 2025

GumGum is a contextual-first, global digital advertising platform that uses advanced AI technology to serve captivating creative ads that drive consumer attention, without the use of personal data. At GumGum, we don’t need to know who you are to deliver relevant and engaging ads that align with your active frame of mind. 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.

To be a part of this next phase of digital advertising that prioritizes data privacy, please visit www.gumgum.com/careers

A Software Engineer II on the Advertising Applications team at GumGum builds and maintains a variety of web applications used by both internal and external users. This role is for a fullstack engineer who will work on both the frontend and backend, participating in a team that prioritizes skill sharing and learning. They will make an impact by developing applications used every day across the company. This role will have a collaborative perspective, supporting the design and direction of projects with feedback from other engineers, product managers, and QA to build key sections of the various applications. An engineer in this role is familiar with and works in technologies such as React, Redux, TypeScript, and Java/Spring on the Backend for the API.

Note: GumGum fosters a flexible work environment, offering GumGummers the ability to work either in-office or remotely/from home. For this position, in-person/office collaboration is required 2 days per week, supporting a balanced approach to flexibility and team engagement.

What You'll Achieve

  • Design, develop, and maintain new features and improvements for a variety of React web applications
  • Develop backend functionality with Java/Spring, including extending and maintaining APIs
  • Support more senior engineers with projects from inception to production release (and beyond)
  • Collaborate regularly with other teams such as DevOps, Designers, and Product to optimize our applications and brainstorm creative solutions together
  • Implement tests and ensure proper functionality and graceful degradation on multiple browsers
  • Help troubleshoot user reported issues from the team’s applications
  • Work with stakeholders in various departments to fully understand business requirements and translate them into the development of the products
  • Develop a deep understanding of the advertising industry as required to be able to make decisions about our technical approach and provide our users with more efficient applications
  • Create new web applications from the ground up if needed
  • Share knowledge by contributing to our technical blog and giving presentations/talks

Skills You'll Bring

  • Degree in Computer Science or a related technical field is a plus
  • 3+ years Software Engineer experience, including JavaScript
  • Candidate has shipped code to production
  • 3+ years experience with React
  • 2+ years experience with Java
  • Core understanding of JavaScript, HTML5, and CSS3
  • Use of Git and command-line tools
  • Comfortable using browser developer tools and build tools such as Webpack or build
  • Understanding of responsive design concepts and cross-browser compatibility
  • Understanding of deployment pipeline and processes for releases.
  • Prioritization of tasks in alignment with company goals.
  • Good knowledge of SQL
  • Familiarity with RESTful API concepts

What We Offer

At GumGum, competitive base pay is a part of a total rewards package which also includes benefits, an emphasis on recognition, development, and wellness. The reasonable estimated base pay range for this role is from $148,000 - $167,500 annually. The actual amount may be higher or lower. Individual compensation will vary based on factors including, but not limited to, relevant qualifications, work location, and labor market conditions.

The total rewards package offered also includes an employer-matched 401(k) retirement plan, and depending on the role, participation in a bonus, commission, or stock incentive program. Your recruiter can share more specifics during the hiring process. Learn more about our U.S. benefits & perks package at gumgum.com/benefits.

Awards

  • Shortlisted for Marketing Technology Company of the Year for the 2023 Mumbrella Awards
  • 2024 Winner of 7 BuiltIn Awards on a national, regional, and remote scale - including Remote Best Places to Work at #25 and Best Midsize Places to Work in Los Angeles, CA at #9
  • Ad Exchanger Programmatic Power Player 2022 and 2021
  • CTO Hero Award of OTT.X 2023
  • Digiday Media Awards Europe finalist 2022 and 2021
  • Finalist for the 2023 AdExchanger Awards Best Video Technology For Media Suppliers
  • Gold Award at the IAB Mixx Awards in Belgium in the “Best Use of Advertising Technology” category
  • The Drum Award Digital Advertising: Game-changing Technology for Domino's case study

GumGum is proud to be an equal opportunity employer. At GumGum, we believe in cultivating an environment where our team members can bring their authentic, whole selves to work. Encouraging identity and belonging is one of the many aspects of our culture that makes us stronger as an organization and drives innovation. We are committed to building and delivering a diverse, inclusive, and equitable workforce that is representative of the world around us, where all individuals are treated with respect and dignity - and to act swiftly if this value is ever threatened. We are constantly striving to be better, and we continue to take strategic steps to advance representation.

Learn more about our DEIB programming at gumgum.com/deib

Follow us on our socials...

Instagram: @gumgum & @dogsofgumgum
LinkedIn: GumGum
Tweet us: @gumgum
Facebook: GumGum