Python Software Developer jobs in United Kingdom

Moloco builds some of the most powerful AI advertising solutions in the world. Our name—short for "machine learning company"—reflects our core mission: democratizing access to the advanced AI that has historically been reserved for tech giants. Led by machine learning pioneers who built some of the most successful ad systems at Google, including YouTube's monetization engine and key search advertising technologies, we're transforming how businesses grow and compete in the digital economy.

Built with AI from day one, Moloco’s planet-scale machine learning platform powers a suite of solutions for advertising growth and monetization. Moloco Ads is an AI-powered platform that delivers real business outcomes for mobile app marketers through performance-based user acquisition. Moloco Commerce Media and Streaming Monetization solutions enable retailers, marketplaces, and streaming platforms to build revenue-generating ad businesses that balance user experience and advertiser performance.

Moloco is headquartered in Silicon Valley, with offices in Seattle, New York, San Francisco, Seoul, Beijing, Singapore, Bangalore, Gurgaon, Tokyo, Shanghai, London, Tel Aviv, and Berlin.

Moloco is a truly rewarding place to work and in an exciting period of growth, which you could be a part of. Join us today and apply now!

We are seeking an experienced Software Engineer (Tech Lead) to drive the expansion of Moloco Commerce Media (MCM) in European markets. MCM’s enterprise platform helps retailers of all sizes build and monetize their retail-media advertising business. Our global-scale infrastructure handles billions of ad auctions everyday, while our cutting-edge machine learning (ML) delivers high performance for advertisers and quality experiences for retail shoppers. The MCM engineering team is responsible for the foundational systems underlying this platform, including core ad-serving, campaign management, data infrastructure, and customer integrations.

• Design, develop and operate an end-to-end enterprise platform that remains fast, reliable and secure at scale.
• Build and maintain APIs and features for campaign management, ad serving, targeting, data ingestion and export, reporting and analytics, etc.
• Provide technical leadership and guidance for a site-based engineering team to deliver on their roadmap.
• Directly engage with customers to identify gaps, translate real world needs into engineering solutions, and deliver outcomes including legacy platform migrations, data connectors, bespoke features, workflows and analytics.
• Contribute to the strategic vision of the platform, influencing technical decisions and long-term architecture.
• Explore and prototype next generation features including those enabled by generative AI.

• 8+ years software development experience using one or more modern languages such as Java, Python and Go.
• 2+ years of leadership experience in delivering technical projects with a small (5+) team of engineers.
• Hands‑on experience with large‑scale distributed systems, from requirements gathering and design to implementation and production deployment.
• Experience in building platforms for digital advertising or e‑commerce applications.
• Experience with cloud‑based technologies (e.g., AWS, GCE, GCP, Beam, Spark, BigTable, BigQuery etc.)
• Excellent problem‑solving skills and the ability to work independently in a fast‑paced environment.
• Strong interpersonal and communication skills, with the ability to build and maintain cross‑functional and customer relationships.
• Experience working directly with customers or in a customer‑facing role.
• Willingness to travel as needed (up to 20% travel).
• Multilingual proficiency (English, French preferred).

We take care of you and create the conditions for you to do the best work of your career. We offer innovative benefits that empower our employees to take care of themselves and their families so they can do the best work of their lives.

• Lead with Humility: Everyone’s voice is respected, valued, and heard. With humility, we become more open and accessible to each other. We win, lose, and learn together. Accountability and feedback are essential to our success.
• Uncapped Growth Mindset: We see all situations as opportunities to learn, grow, and improve as individuals and as an organization. We seek diverse perspectives, encourage curiosity, and promote experimentation to push the boundaries of what’s possible.
• Create Real Value: We pursue the most impactful opportunities with rigor and integrity. We take intelligent risks and make disciplined trade‑offs to maintain deep focus. We help our customers win by delivering durable value.
• Go Further Together: We’re one team working towards one mission and vision. We collaborate proactively and inclusively, involving the right people at the right time and in the right way. We strive to create a more equitable workplace. We won’t let each other fail.

Creating a diverse workforce and a culture of inclusion and belonging is core to our existence. To reach our goals, diversity of talent and thought is a critical component of how we operate as an organization. Our workforce is our superpower, and we know that fostering a culture of inclusion, authenticity, and belonging gives us the greatest opportunity to achieve our vision to become the scaling engine for the Internet economy.

Moloco is an equal opportunity employer. We highly value diversity in our current and future employees and do not discriminate (including in our hiring and promotion practices) on the basis of race, color, creed, religion, national origin, age, sex and gender, gender expression and identity, sexual orientation, marital status, ancestry, physical or mental disability, military or veteran status, or any other characteristic protected by law.

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