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Liftoff is an AI-powered performance marketing platform for the mobile app economy. The View Master team builds mobile SDKs (iOS, Android, Windows) and systems connecting publishers with advertisers, managing applications, campaigns, and creatives that feed into the ad-serving pipeline. The team creates innovative advertisements viewed by millions daily, optimizing ad performance and user experience across a global customer base of 6,600+ mobile businesses.
In this Staff Software Engineer role, you will own the technical direction for new ad format development in the SDK, making architectural decisions on native/web approaches and cross-platform compatibility independently. You will scope and lead ambiguous, cross-team initiatives from problem definition through rollout—such as overhauling automation quality and improving creative/SDK interoperability. You will drive multi-quarter improvements to system efficiency, reliability, and rendering performance, owning tradeoffs between short- and long-term solutions.
You will set and evangelize testing strategy and standards (unit, integration, automated) across the team, design and drive experimentation and canary-release strategies for ad unit performance, and technically lead and mentor other engineers, including guiding junior and mid-level engineers' project work and growth. You will represent the team in cross-functional and roadmap discussions, influencing prioritization and scope. You will uphold and help define the team's engineering bar for code quality, security/privacy, cost efficiency, and production hygiene (oncall, monitoring, documentation). You will also contribute to hiring and leveling by participating in interviews and helping maintain the technical bar.
The role is eligible for remote or hybrid work out of the London office. Travel expectations include attending in-person team gatherings (project meetings, regional meet-ups, company-wide events) at least once per quarter.
**Requirements:**
- Bachelor's degree in Computer Science or related field
- 6+ years of relevant software engineering experience
- Deep expertise in JavaScript (ES6+), CSS preprocessors, and HTML5, with demonstrated ability to make architectural decisions in this stack
- Experience working in and helping shape Agile processes for a team
- Strong communication skills, including ability to influence technical direction across engineering and product without formal authority
**Nice to Have:**
- Previous AdTech experience
- Experience developing mobile applications
- Advanced automated testing strategies using tools such as AWS Device Farm, iOS and Android simulators, Playwright, Selenium, etc.
