Senior Frontend Engineer

Liftoff, Multiple locations options - EMEA (see below for details)

Fueling Mobile Growth

About Liftoff+Vungle

At Liftoff+Vungle, we’re solving one of the core problems faced by every mobile app: growth. To do so, we build Machine Learning and Big Data-driven technology that can accurately predict which apps a user will like, and connect them in a compelling way. Our systems operate at a scale unseen outside of the largest Internet companies -- processing over 4 million requests per second and interacting with over a billion users a week. Our technology is innovative and we have strong product-market fit; as a result, we're profitable and seeing tremendous growth.

Across our engineering teams, we offer a wide range of opportunities for different skill levels and experiences.

The Ad Formats Team at Liftoff+Vungle

The Ad Formats Team builds the systems that connects Liftoff+Vungle’s publishers with advertisers and manages the applications, campaigns, creatives (bonus points for knowing what all that means) and everything else that feed into our ad serving pipeline. We also build the advertisements that millions of people see every day across the world.

We’re a group of full-stack, JS-focused engineers. As for you: you’re passionate about mobile-first front-ends with an eye for design and good system design fundamentals. This team is dedicated to building/extending the framework that displays ads to our users. We want you to hit the ground running and begin adding new features within a couple of weeks; but don’t worry, the team will help you get up-to-speed!

So what’s the day-to-day look like? It’s a lot of coding, a decent amount of code reviews and unit testing, some discussions with end users and product teams, and most importantly, very few meetings. We want engineers who are looking to grow, build awesome features, and play a role in the expansion of our team.


This role can be based out of London, Berlin or Helsinki


  • Build new ad units (dynamic templates) with assistance from our product and creative teams.
  • Design and implement foundational updates to our dynamic template code base to facilitate future development.
  • Create new systems to better test, measure performance, and decrease time-to-market for our advertisements.
  • Enhance existing ad units.
  • Work closely with our SDK teams to ensure compatibility across platforms and add advanced interactivity to advertisements.
  • Mentor junior engineers.

Desired Skills and Ability

  • Bachelor’s degree in Computer Science or related fields and 6 years relevant experience.
  • At least 6 years experience with the following: ES6, CSS preprocessors, and HTML5.
  • Experience working in an Agile(ish) development team.
  • Experience developing mobile-first user interfaces
  • Knowledge of the following frameworks is a plus: Webpack, Gulp, NodeJS.
  • Excellent people skills, willingness to give and receive constructive feedback
  • Previous AdTech experience is always welcomed.

Working at Liftoff+Vungle is fast-paced, fun, and challenging, and we thrive on innovation. Come join our team and help shape the future of the mobile app ecosystem. If this role sounds interesting to you, we would love to hear from you!

Liftoff+Vungle is committed to providing and maintaining a work environment where all employees and candidates are treated with dignity and respect and that is free of bias, prejudice, and harassment. Liftoff+Vungle is further committed to providing an equal employment opportunity for all employees and candidates for employment free from discrimination and harassment on the basis of sex, gender (including sexual harassment, gender harassment, and harassment due to pregnancy, childbirth, breastfeeding, and related conditions), sexual orientation, gender identity, gender expression, gender nonconformity, race, creed, religion, color, national origin, ancestry (including association, affiliation, or participation with persons or activities related to national origin, English-proficiency or accent, or immigration status), physical or mental disability, medical condition(s), genetic information of an individual or family member of the individual, marital or domestic partner status, age, veteran or military status, family care status, requesting or taking pregnancy, parental or disability leave, requesting an accommodation, or any other characteristic protected by federal, state, or local law, regulation, or ordinance. All such discrimination and harassment is unlawful and will not be tolerated. Liftoff+Vungle maintains a continued commitment to equal employment opportunity and expects the full cooperation of all personnel.


Agency and Third Party Recruiter Notice:

Liftoff+Vungle does not accept unsolicited resumes from individual recruiters or third-party recruiting agencies in response to job postings. No fee will be paid to third parties who submit unsolicited candidates directly to our hiring managers or Recruiting Team. All candidates must be submitted via our Applicant Tracking System by approved Liftoff+Vungle vendors who have been expressly requested to make a submission by our Recruiting Team for a specific job opening. No placement fees will be paid to any firm unless such a request has been made by the Liftoff+Vungle Recruiting Team and such a candidate was submitted to the Liftoff+Vungle Recruiting Team via our Applicant Tracking System.

About Liftoff

We began Liftoff in August, 2012 with the mission to revolutionize how mobile app marketers build and grow an active, engaged user base. Our approach was to design the first truly ROI-optimized mobile acquisition and retention platform for non-gaming apps. We set our sights on enabling marketers to run campaigns focused on finding users who will take meaningful actions beyond the install, like register for an account, book a hotel room or make a purchase. This is how mobile app marketing should work.

Since our launch, Liftoff has grown to become a leader in the mobile marketing industry, powering cost-per-action optimized app marketing and re-engagement campaigns for some of the world’s greatest brands.

Want to learn more about Liftoff? Visit Liftoff's website.