Senior Ad Tech Mobile Engineer - Android/Flutter

Onefootball GmbH; United Kingdom; Remote; GBP 60,000 - 90,000; Full time

Job summary

A leading digital football platform seeks a Senior Ad Tech Mobile Engineer to optimize and scale their mobile ad tech stack. This strategic role requires deep expertise in ad tech principles and hands-on experience with mobile development technologies. Join a dynamic team committed to innovation and user experience.

Benefits

25 vacation days (plus UK public holidays)

1 extra anniversary day each calendar year (up to 5)

Birthday day off

5 personal 'OneFootball days'

£600 learning & development budget per year

Mental health support via OpenUp

Additional Pension Contribution

Private Healthcare

Company-Issued MacBook

Enhanced maternity and paternity leave

Qualifications

• 6+ years of experience in software engineering focusing on Ad Tech.
• Strong knowledge of mobile development with Flutter and Kotlin.
• Proven experience integrating mobile ad SDKs.

Responsibilities

• Define and own the technical architecture for the mobile Ad Tech stack.
• Design and optimize ad-serving workflows for mobile apps.
• Lead technical decision-making around ad integrations.

Skills

Ad Tech architecture

Programmatic advertising

In-app monetization

Mobile development

Tools

Google Ad Manager

MoPub

AppLovin

Prebid Mobile

Job description

Senior Ad Tech Mobile Engineer - Android/Flutter

Location: UK - Remote Working
Type: Full-time
Department: Engineering / Ad Tech - Client XP

About OneFootball

OneFootball is the world’s #1 digital football platform, with more than 100 million active users across the world. Founded in 2008, we have come a long way to provide our users with the best personalized digital football experience. At OneFootball, our purpose is to disrupt the status quo and make football more accessible, inclusive and enjoyable.We are a product-driven company with an obsession of crafting a great user experience backed by world-class engineering.

About the Role

We are looking for a strategic and hands-on Ad Tech Architect to design, optimize, and scale our mobile Ad Tech stack. This role is ideal for someone with deep expertise in in-app monetization, programmatic advertising, and backend ad-serving technologies. As the technical authority on Ad Tech, you will define the architecture, ensure system scalability, and drive revenue growth by implementing cutting-edge solutions.

Key Responsibilities

• Define and own the technical architecture for our mobile Ad Tech stack, ensuring scalability, performance, and compliance with industry standards.
• Design and optimize ad-serving workflows for mobile apps built with Flutter, Kotlin, and Swift, ensuring seamless integration with ad mediation and programmatic platforms.
• Lead technical decision-making around ad integrations, header bidding, and low-latency ad rendering.
• Collaborate with engineering, product, and business teams to align Ad Tech strategies with company revenue goals.
• Evaluate and implement best-in-class Ad Tech solutions, including SDKs, demand-side platforms (DSPs), and supply-side platforms (SSPs).
• Ensure compliance with privacy regulations (GDPR, CCPA, ATT) and implement privacy-first ad strategies.
• Act as a technical mentor for engineers working on Ad Tech mobile integrations and backend services.
• Stay ahead of Ad Tech innovations, including AI-driven ad optimization, contextual targeting, and the evolving landscape of in-app advertising.

Requirements

• 6+ years of experience in software engineering with a focus on Ad Tech architecture, programmatic advertising, and mobile monetization.
• Strong knowledge of mobile development (Flutter, Kotlin) and a good understanding of backend development.
• Experience with Extreme Programming (XP) - Paired programming, TDD, CI etc.
• Hands-on experience integrating and optimizing mobile ad SDKs (Google Ad Manager, MoPub, AppLovin, Prebid Mobile, etc.).
• Deep expertise in ad mediation platforms, RTB protocols, header bidding, and in-app bidding.
• Proven experience designing and scaling ad-serving architectures for mobile applications.
• Strong understanding of real-time data processing, latency optimization, and high-throughput ad transactions.
• Experience working with Ad Tech privacy frameworks (GDPR, CCPA, ATT) and implementing compliance strategies.
• Familiarity with cloud-based ad infrastructure (AWS, GCP, or Firebase) for data analytics and reporting.
• Ability to guide and mentor engineering teams, promoting best practices in Ad Tech and Mobile development.
• Having Knowledge or prior experience in media/entertainment or with a direct-to-consumer streaming service is a great advantage.

Nice to Have

• Experience with AI-driven ad personalization and revenue optimization.
• Knowledge of machine learning models for ad targeting and fraud detection.
• Familiarity with first-party data strategies and contextual advertising in a post-cookie world.

Why Join the Media advertising team?

• Architect the future of mobile Ad Tech, directly impacting revenue and user experience.
• Work with cutting-edge technologies in a fast-growing, high-impact domain.
• Opportunity for ownership and leadership, driving key architectural decisions.

Why Join Us?

In the UK, we provide a flexible work environment, giving you the option to work remotely while encouraging occasional office visits for collaboration and connection.

• Vacation days: 25 days (plus UK public holidays)
• Anniversary Days: 1 extra day each calendar year (up to 5)
• Birthday Day off: even if your birthday falls on a non-working day, you can enjoy the extra day off
• Personal days: 5 "OneFootball days" to use when life happens, no questions asked!
• Learning & Development Budget: £600 per year (after probation) to support your career growth
• Mental Health Support via OpenUp - because your well-being matters
• Additional Pension Contribution for a secure future
• Private Healthcare - because your health comes first
• Company-Issued MacBook to power your success!
• Enhanced Leave: Paternity Leave - 3 weeks fully paid for fathers & Maternity Leave - 6 weeks of fully paid leave for mothers
• Very cool office in Central London (Holborn) to come say hi and connect
• Remote Work Abroad: we offer flexibility for our employees to work remotely. Being based in the UK, there may be additional considerations due to being outside the EU, but we’ll do our best to accommodate where possible.

No matter where you are, OneFootball is committed to providing a workplace that values flexibility, balance, and personal growth. Join us today!

At OneFootball, we value the insights and ideas that stem from having a diverse team. We believe everyone should have the opportunity to be a part of the beautiful game—irrespective of gender, race, ethnicity, nationality, age, background, sexual orientation, religion, team followed, or other personal traits. Whether you're a dedicated 24/7 football fan or not, we actively seek to recruit and support a diverse team to ensure our platform, football, and the wider world are viewed through an inclusive lens.