--- title: 'Staff Software Engineer (소프트웨어 엔지니어) at Moloco' canonical: 'https://feeny.ai/job/staff-software-engineer-moloco-seoul-qq4h2335f31y' type: 'job' last_seen: '2026-10-14' --- # Staff Software Engineer (소프트웨어 엔지니어) at Moloco - **Company:** Moloco - **Location:** Seoul, South Korea - **Posted:** 2026-09-27 - **Last confirmed live:** 2026-10-14 - **Apply:** https://job-boards.greenhouse.io/moloco/jobs/8002090003 ## Job description About Moloco: Moloco is an AI-native performance advertising company, bringing the power of AI advertising to the open internet. Founded in 2013 by machine learning engineers who had built AI advertising systems inside the world's largest technology companies, Moloco began from a shared mission: to build that same engine for the open internet. Today, Moloco is one company with two businesses, built on the same compound AI system. [Moloco Ads](https://www.moloco.com/moloco-ads) is our AI-native performance advertising platform, helping mobile app marketers acquire, retain, and re-engage high-value users across the open internet. [Moloco Commerce Media](https://www.moloco.com/moloco-commerce-media) is our AI-native retail media platform, enabling retailers and marketplaces to turn their platforms into thriving ad businesses. Both are powered by CARA (Compound Ad Recommendation Architecture), the AI system behind every Moloco product. At Moloco, we bring together those who've already solved hard problems and those with the drive to. Here, we work on some of the complex problems in AI advertising, at a scale and level of sophistication very few companies can offer. Come build what's next. ## About the role As a Staff Software Engineer at Moloco, you will help build the systems and products that power intelligent advertising and machine learning solutions for customers around the world. You will work on complex, large-scale problems at the intersection of software engineering, data, machine learning, and product development, turning them into reliable and intuitive solutions for customers and internal partners. This role is ideal for an experienced engineer who combines strong technical depth with broad organizational impact. You will contribute to technical direction, lead critical initiatives from concept to production, and partner with teams across Moloco to deliver products and platforms that are scalable, measurable, and trusted by our customers. Here’s what you’ll be working on: - Set technical direction for key product and platform initiatives, influencing architecture, engineering standards, and long-term technical strategy. - Lead complex, cross-functional projects from problem framing and requirements definition through technical design, implementation, launch, and post-launch improvement. - Design, implement, and operate scalable backend services, APIs, data systems, and workflows that support Moloco’s products and customer experiences. - Translate ambiguous business and customer problems into clear technical solutions, balancing product impact, engineering quality, delivery timelines, and operational cost. - Partner closely with Product, Data, ML, UX, and other Engineering teams to define scope, align stakeholders, and make effective technical and product trade-offs. - Build and improve systems that help customers manage, deliver, measure, and optimize their business outcomes. - Improve system reliability, performance, scalability, and observability through strong engineering practices, including testing, metrics, logging, monitoring, incident response, and operational reviews. - Raise the engineering bar across the organization by driving design reviews, sharing best practices, and promoting thoughtful approaches to maintainability and technical excellence. - Mentor and support engineers across levels, helping them grow their technical judgment, project ownership, and ability to operate effectively in a global engineering organization. - Represent the team in broader technical discussions and help align near-term execution with Moloco’s longer-term product and engineering goals. ## Basic Qualifications - Bachelor’s or Master’s degree in Computer Science, a related technical field, or equivalent practical experience. - 15+ years of software engineering experience, including significant experience building and operating backend systems, platforms, or user-facing products at scale. - Strong proficiency in one or more modern programming languages such as Java, Go, Kotlin, C++, or Python. - Deep understanding of distributed systems, service-oriented architecture, data structures, algorithms, and system design. - Proven experience designing and operating reliable, high-throughput services and APIs in production environments. - Experience working with relational or NoSQL databases and large-scale data systems, such as BigQuery, Bigtable, MySQL, or PostgreSQL. - Track record of leading complex technical initiatives that span multiple components, teams, or disciplines, including aligning stakeholders and delivering high-quality results. - Demonstrated ability to make sound technical decisions in ambiguous situations and clearly communicate the rationale, trade-offs, and expected impact. - Experience collaborating closely with Product, Data, ML, UX, and Engineering partners to shape product direction and execution plans. - Strong ownership mindset, with experience driving projects end-to-end and remaining engaged through launch, operation, and continuous improvement. - Experience mentoring engineers and influencing engineering practices, team culture, or technical strategy beyond your immediate area. - Fluent verbal and written communication skills in English, with the ability to lead technical discussions with global and cross-functional stakeholders. ## Preferred Qualifications - Experience building products or platforms in digital advertising, machine learning, media, e-commerce, fintech, or other data-intensive domains. - Experience with large-scale distributed systems, real-time or near-real-time processing, high-volume data pipelines, or latency-sensitive services. - Familiarity with cloud platforms and big-data technologies such as GCP, BigQuery, Dataflow, Kafka, Beam, or Spark. - Experience integrating data pipelines, schemas, data contracts, analytics, and reporting capabilities into customer-facing products. - Experience defining or improving reliability practices, including SLIs/SLOs, capacity planning, backfill strategies, cost management, and incident response. - Ability to simplify complex technical or operational concepts into clear product experiences, APIs, and workflows. - Experience working in a global or multi-region environment, especially where customer needs, market dynamics, or regulations differ by region. - Demonstrated success influencing technical direction across organizational boundaries without relying on formal authority. - Experience building inclusive, collaborative teams and helping engineers develop their technical and leadership capabilities. Supporting Your Best Work and Your Best Life: Our benefits are designed to support our people in doing their best work and living well, at work and beyond. Benefits vary by country, employment type, and eligibility. Connect with a recruiter to learn more about benefits in your region. Moloco Values: - Lead with Humility: Everyone’s voice is respected, valued, and heard. 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 intensity and rigor. 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 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: - [Moloco Company Blog](https://www.moloco.com/blogs) - [Moloco Leadership](https://www.moloco.com/company/leadership) - [Moloco Newsroom](https://www.moloco.com/newsroom) 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](https://www.moloco.cloud/hubfs/careers/AI%20Use%20in%20Interviews.pdf) before your interview to understand what to expect. Failure to comply with this policy may impact your candidacy. Candidate Privacy Notice: Your privacy matters to us. By applying, you acknowledge that you’ve reviewed our [Candidate Privacy Notice](https://www.moloco.cloud/hubfs/careers/Candidate%20Privacy%20Notice.pdf). ## About Moloco ## Company Overview - **One-liner**: Moloco builds AI-powered performance advertising solutions that enable businesses of all sizes to grow and monetize through operational machine learning. - **Entity Type**: Private (valued over $2 billion) - **Headquarters**: Menlo Park, California, USA (Silicon Valley) - **Founded**: 2013 - **Founders**: Ikkjin Ahn (CEO) ## Core Business - Primary industry/industries: AI-powered advertising technology (AdTech), Machine Learning, Performance Marketing, Commerce Media, Streaming Monetization - Target customers: B2B — performance marketers, online marketplaces and retailers, streaming and CTV platforms - Mission or purpose statement: "Empower businesses of all sizes to grow through operational machine learning." Their vision is to be "the scaling engine for the Internet economy." ## Products & Services - **Moloco Ads**: A flagship performance advertising platform that helps marketers acquire and re-engage users at scale across the world's largest independent app ecosystem (2+ billion users across 3 million apps). Uses advanced AI optimization for strong ROI and incrementality. - **Moloco Commerce Media**: An enterprise software solution enabling online marketplaces and retailers to build their own ML-powered advertising business, turning every retail impression into revenue. - **Moloco Streaming Monetization**: The industry's first AI-powered full-funnel ad stack designed for large streaming and CTV providers, enabling them to offer performance marketing and full-funnel advertising solutions beyond traditional brand advertising. ## Market Standing - **Valuation/Market Cap**: Valued over $2 billion (backed by Fidelity Management & Research) - **Key Metric Total Funding**: The company is fully funded and does not need additional capital; it has been profitable for five years, self-funding growth with zero debt. Key metrics include over $200 million in annual revenue (growing more than 5x since 2020) and over $2 billion in annualized ad spend. - **Notable Investors/Partners**: Investors include Fidelity Management & Research. Customers include Tubi, Wayfair, Chime, Pinterest, Scopely, King, Snapchat, Musinsa, and Olive Young. - **Growth Signals**: Rapidly scaled from $1 million to $100 million in under five years, now exceeding $200 million in revenue. Less than 1% penetration of total addressable market. Recognized as a Deloitte Fast 500 company, Google Cloud Customer of the Year, one of the Financial Times Fastest Growing Companies, and one of Business Insider’s Top 16 Hottest Ad Tech Companies. ## Competitive Advantages - **Planet-scale AI**: Founded by machine learning pioneers who built some of the most successful ad systems at Google (including YouTube's monetization engine and Android Data team). - **Financial strength**: Profitable for five years with zero debt, allowing heavy investment in R&D while maintaining startup agility. - **Proprietary ML technology**: Uses operational machine learning to solve advertising challenges at scale, with a unique ability to leverage first-party data from apps and platforms. - **Independence**: Not tied to any major platform or walled garden, enabling them to work across the independent app ecosystem. ## Strategic Focus - Expanding into streaming and CTV monetization with a first-of-its-kind full-funnel AI ad stack - Growing the Commerce Media business to enable more retailers and marketplaces to build their own ad businesses - Continuing to scale the core Ads business with low penetration (less than 1%) of a massive addressable market - Investing heavily in innovation while maintaining profitability ## Why Work Here - **Culture**: Emphasizes collaboration, humility, and empowerment. Values include "Lead With Humility," "Go Further Together," "Create Real Value," and "Uncapped Growth Mindset." - **Remote/Hybrid/Office Policy**: Offers remote offices globally, with physical hubs in Menlo Park (HQ), San Francisco, New York, Seattle, Los Angeles, London, Tel Aviv, Seoul, Tokyo, Beijing, Singapore, and Gurgaon (India). - **Notable Perks**: - 100% health insurance coverage for employees (plus dental, vision, and life insurance for family) - Unlimited paid time off (flexible vacation policy) - Paid parental leave for primary and secondary caregivers - $2,500 annual Learning & Development stipend - Daily lunch provided, healthy snacks and beverages - Home office setup, phone, internet, and transportation reimbursements - Equity and generous retirement benefits - Memberships to Calm, Headspace, Spring Health, plus fitness and health reimbursements - **Engineering Culture**: Work alongside engineers who built some of the world's largest ML systems at Google, Amazon, YouTube, and Meta. High-impact, fast-paced environment with a focus on real customer results. - **Team**: Over 700 employees globally, with a strong commitment to diversity, inclusion, and belonging. - **Financial Stability**: Profitable for five years, no debt, fully funded — offering job security rare for a growth-stage startup. ## Sources 1. [moloco.com/careers](https://www.moloco.com/careers) 2. [moloco.com/about](https://www.moloco.com/about) 3. [moloco.com](https://www.moloco.com/) 4. [moloco.com/leadership](https://www.moloco.com/leadership) 5. [linkedin.com/company/moloco](https://www.linkedin.com/company/moloco) ## Other roles at Moloco - [Global Product Activation Lead (gPAL)](https://feeny.ai/job/global-product-activation-lead-gpal-moloco-menlo-park-01jkh65byc4y) — Menlo Park, CA / New York, NY / San Francisco, CA / Seattle, WA - [Moloco Ads GTM Strategy Manager](https://feeny.ai/job/moloco-ads-gtm-strategy-manager-moloco-menlo-park-warbfr4xdh5x) — Menlo Park, CA - [Senior Marketing Insights Analyst](https://feeny.ai/job/senior-marketing-insights-analyst-moloco-menlo-park-e70f5saw62s1) — Menlo Park, CA / San Francisco, CA - [Head of People Technology](https://feeny.ai/job/head-of-people-technology-moloco-menlo-park-4ypawnz0kf12) — Menlo Park, CA - [Senior Data Scientist, Growth Analytics](https://feeny.ai/job/senior-data-scientist-growth-analytics-moloco-menlo-park-53mwqn27r11c) — Menlo Park, CA / New York, NY - [Software Engineer Intern (3 months)](https://feeny.ai/job/software-engineer-intern-3-months-moloco-seoul-51f7mh1w90fd) — Seoul, South Korea - [QA Engineer (1-Year Contract)](https://feeny.ai/job/qa-engineer-1-year-contract-moloco-seoul-ec2d7e0y3f7w) — Seoul, South Korea - [Senior Software Engineer, Common Infrastructure](https://feeny.ai/job/senior-software-engineer-common-infrastructure-moloco-seattle-drtgdqzeq0xa) — Seattle, WA - [Director, FP&A](https://feeny.ai/job/director-fp-a-moloco-menlo-park-9aydbm0snnb1) — Menlo Park, CA / San Francisco, CA - [Staff Technical Program Manager - Creatives](https://feeny.ai/job/staff-technical-program-manager-creatives-moloco-menlo-park-wv43myvhd00p) — Menlo Park, CA