Associate Software Engineer

Kargo creates breakthrough cross-screen ad experiences for the world’s leading brands and publishers. Every day, our 600+ employees bring the power of their creativity and diversity to radically raise the bar on what mobile, CTV, AI, social, and eCommerce can do to build businesses. Now 20 years strong, Kargo has offices in NYC, Chicago, LA, Dallas, Sydney, Auckland, London and Waterford, Ireland. Humble brag: In 2025, Kargo was recognized as a Best Place to Work by Built In.

Who We Hire

Success takes all kinds. Diversity describes our workforce. Inclusion defines our culture. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, marital status, age, national origin, protected veteran status, disability or other legally protected status. Individuals with disabilities are provided reasonable accommodation to participate in the job application process, perform essential job functions, and receive other benefits and privileges of employment. 

Title: Associate Software Engineer 

Job Type:  Permanent
Job Location: Los Angeles, CA (3 days in office)  / Remote 
Salary Range: $80,000 - $110,000

The Opportunity

We’re looking for an Associate Rich Media Engineer to join our Creative Production Ad Tech team. In this role, you will work on building interactive ad experiences, mini-games, sleek animations, and other high-engagement content for digital advertising campaigns for desktop and mobile web. You’ll collaborate with designers, developers, and other teams to push the boundaries of rich media advertising, integrate APIs, optimize performance, and ensure seamless cross-platform experiences. 

The Daily To-Do

• Develop Interactive Ad Experiences – Code and optimize rich media ads, interactive games, and animated banners using HTML5, JavaScript, and CSS3 using a variety of ad building technologies
• Hit APIs & Integrate Data – Consume third-party APIs (e.g., weather, real-time product data feeds, sports) to enhance interactivity and personalization in ad experiences.
• Optimize Performance & Compatibility – Ensure fast, smooth, and cross-platform performance across different devices and browsers.
• Collaborate with Designers & Marketers – Work closely with our ad designers and product teams to bring creative concepts to life.
• Experiment & Innovate – Research and implement new rich media techniques and animation libraries, staying up-to-date with the latest and newest technologies
• Test & Debug – Ensure high-quality, bug-free ad executions that meet industry standards
• Develop a lean JavaScript library of reusable tools for everything from complex animations to gaming. 
• Collaborate with other engineering teams to help implement ad units with complex rich media interactions.
• Identify and initiate investigations into new production technologies, prototype and test solutions for product features, and design and validate production designs that deliver an exceptional user experience.

Qualifications : 

• Strong portfolio (ie. Github) demonstrating past work experience
• Proficiency in JavaScript (Typescript, ES6), HTML5, and CSS
• Experience working with RESTful APIs and JSON to fetch and display dynamic data.
• Basic knowledge of Ad Tech (e.g., Google Ads, DV360, Celtra, Google Studio, programmatic platforms) is a plus.
• Familiar with the current technical capabilities and limitations of mobile rich media, and know “what works where” across devices and desktop.
• Ability to manage ambiguity, work autonomously, multi-task, and meet fast evolving deadlines with a curiosity and passion for building rich, new experiences.
• An aptitude and honed intuition for tasteful, visual design details.
• Understanding of browser performance optimizations, debugging, and responsive design principles.
• Familiarity with the full stack, Node.js, or other backend frameworks.
• Familiarity with unit testing, automation testing, and quality assurance.
• A clean sense of design aesthetics and a natural propensity towards simplification over complication.
• Excellent communication, presentation, interpersonal, and analytical skills; the ability to communicate complex, interactive design concepts clearly and persuasively.
• Familiarity with A/B testing and analytics integration is a plus.

Follow Our Lead

• Big Picture:  kargo.com

The Latest:  Instagram (@kargomobile) and LinkedIn (Kargo)