Senior Software Engineer - Ads Experience (시니어 소프트웨어 엔지니어)

Confirmed live in the last 24 hours

Moloco

Seoul, Korea

On-site

Posted April 30, 2026

Job Description

About Moloco:

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 enables retailers and marketplaces 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, 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!

About the role

As a Senior Software Engineer on the Ads Experience (AdEx) team, you will lead the design and delivery of key advertiser and operator workflows in Moloco’s web-based campaign management portal (Moloco Cloud Portal, our Ads Manager UI). You will shape how advertisers configure, monitor, and troubleshoot campaigns at scale, driving both user satisfaction and business impact.

The Opportunity

Lead the end‑to‑end design and implementation of complex advertiser workflows and services in Moloco Cloud Portal, from problem framing and technical design to launch and post‑launch iteration.
Act as technical lead for medium‑ to large‑scale projects, breaking down ambiguous problems into clear milestones and aligning engineers and cross‑functional partners.
Architect and evolve backend services and APIs that support campaign setup, health monitoring, reporting, alerting, and diagnostics for advertisers and internal operators.
Partner with Product, UX, Data, and ML to define the operational and reporting experience strategy in the Ads Manager UI, ensuring our experiences are coherent, scalable, and easy to operate.
Collaborate with data and infra teams to design reliable analytics and reporting pipelines, including data contracts, SLIs/SLOs, and mechanisms for data correctness and latency.
Raise the engineering bar by driving best practices in code quality, testing, observability, reliability, and incident response across the AdEx team.
Mentor and guide junior engineers, providing technical feedback, sharing context, and helping them grow in system design and execution.
Influence longer‑term technical direction for Ads Experience, identifying platform opportunities and technical investments that unlock future product capabilities.

Basic Qualifications

BS/MS in Computer Science or a related technical field, or equivalent practical experience.
8+ years of software engineering experience, including significant backend or platform work on user‑facing products.
Proficiency in one or more modern programming languages such as Java, Go, Kotlin, C++, or Python, and experience building large‑scale distributed systems or high‑throughput services.
Strong system design skills, with a track record of leading the design and implementation of complex features or services across multiple components or teams.
Deep experience designing and operating web services / APIs and working with relational or NoSQL databases (e.g., BigQuery, Bigtable, MySQL, PostgreSQL).
Proven experience acting as a project tech lead: breaking down ambiguous problems, aligning stakeholders, and delivering projects on time with high quality.
Demonstrated ability to work effectively with Product, UX, Data, and ML partners, influencing product scope and technical trade‑offs.
Fluent in English, capable of driving technical discussions and decisions with global, cross‑functional stakeholders.

Preferred Qualifications

Extensive experience with advertiser- or operator-facing systems such as campaign managers, reporting/analytics dashboards, troubleshooting/alerting tools, or billing/capacity management systems.
Deep understanding of digital advertising / AdTech, including campaign performance metrics, attribution models, reporting dimensions, and advertiser needs.
Experience designing analytics and reporting architectures (data contracts, schemas, SLIs/SLOs, backfill strategies, latency vs. cost trade‑offs).
Hands‑on experience with cloud and big‑data technologies (e.g., GCP, BigQuery, Dataflow, Kafka, Beam/Spark) and integrating them into user‑facing products.
Experience driving engineering-wide improvements in reliability, observability, testing, or developer productivity in a production environment.
Strong track record of mentoring and growing engineers, and of positively influencing team culture and engineering practices.
Prior experience in global or multi‑region environments where advertiser needs and regulations differ by market is a plus.

Moloco Thrive: Benefits and Well-Being:

We take care of you and create the conditions for you to do the best work of your career. Through a lens of inclusion, 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.

Moloco Values:

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.

Additional Resources:

AI Use in Interviews

Our interview process is designed to get to know the real you. Unless a round specifically includes AI as part of what's being assessed, we ask that candidates engage without AI assistance. Please review our AI Use in Interviews Policy before your interview to understand what to expect. Failure to comply with this policy may impact your candidacy.

Equal Opportunity:

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.

Candidate Privacy Notice:

Your privacy matters to us. By applying, you acknowledge that you’ve reviewed our Candidate Privacy Notice.

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