Clojure job: Senior Software Engineer, Creative Serving

Senior Software Engineer, Creative Serving at Liftoff

🇬🇧 United Kingdom › London   (Posted Jun 23 2025)

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Job description
Liftoff is the leading growth acceleration platform for the mobile industry, helping advertisers, publishers, game developers and DSPs scale revenue growth with solutions to market and monetize mobile apps.

Liftoff’s solutions, including Accelerate, Direct, Influence, Monetize, Intelligence, and Vungle Exchange, support over 6,600 mobile businesses across 74 countries in sectors such as gaming, social, finance, ecommerce, and entertainment. Founded in 2012 and headquartered in Redwood City, CA, Liftoff has a diverse, global presence.

The Creative Serving team maintains and operates mission critical systems involved in every ad serving across Liftoff’s product line. Our systems are foundational and fundamental for Liftoff to function and thrive. As a senior staff engineer, you will build and maintain deep, strategic integration with our partner exchanges, assure impeccable uptime and drive cost effective content delivery world-wide. This includes close collaboration with our internal Vungle Exchange and SDK to help enable Liftoff Exclusive advertising capabilities. As a software engineer, you will also be a critical part of maintaining our ad serving infrastructure, working closely with peers and senior engineers. Your specific responsibilities will include:

Responsibilities:

Contribute to Ad Serving Architecture: Develop and maintain code that supports our ad serving architecture, ensuring reliability and performance. Participate in the on-call rotation to help troubleshoot and tackle issues as they arise.
Implement Cross-Functional Requirements: Work closely with other teams to understand their needs and translate those requirements into effective code solutions that integrate seamlessly with existing systems.
Participate in Code Reviews and Discussions: Actively engage in code reviews, contributing your insights and suggestions to improve the quality of the codebase. Take part in architectural discussions and provide valuable input into technical decisions.
Support Coding Standards and Best Practices: Collaborate with your team to uphold and refine coding standards, development processes, and best practices, ensuring consistency and quality in the work produced.
Collaborate with Peers: Work alongside fellow engineers, sharing knowledge and supporting each other’s growth. Contribute to a positive, collaborative work environment.
Engage in Roadmap Planning: Participate in brainstorming and planning sessions for the product roadmap, providing feedback and suggestions that help shape the technical direction of the team.

Requirements:

5+ years of software engineering experience
3+ years of industry experience
Experience with Golang required, JavaScript, TypeScript and Clojure would be a bonus.
Basic knowledge of various ad formats (e.g., display, video, native) and technologies like VAST, VPAID, and MRAID is a big plus.
Prior experience with mission critical systems.
Some knowledge of the ad tech ecosystem, real time bidding (RTB) protocol.
Good communicator, empathetic and focused listener.

Working at Liftoff is fast-paced, fun, and challenging, and we thrive on innovation. Come join the rocket ship and help shape the future of the mobile app ecosystem with us!

Travel Expectations:
We offer several opportunities for in-person team gatherings, including but not limited to project meetings, regional meetups, and company-wide events. We expect our employees to attend these gatherings at least once per quarter. These gatherings provide essential opportunities for collaboration, communication, and team building.

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