Senior Software Engineer - Applied Data

Moloco; Seattle (WA); On-site; USD 169,000 - 212,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k) with company match

Disability coverage

Life insurance

Well-being and Thrive programs

Flexible Time Off

Job summary

Moloco is seeking a Senior Software Engineer for the Ads Applied Data team to design, develop, and optimize distributed data systems for real-time and batch processing in the ads ecosystem.

You will collaborate with Product, ML, and Data Science teams to enable feature engineering, identity resolution, and signal enrichment across online and offline pipelines, while mentoring peers. This role is based in Seattle with competitive compensation and growth opportunities.

Qualifications

• Bachelor’s or Master’s degree in Computer Science or equivalent technical field.
• 5+ years of software engineering experience.
• Proven experience designing and building large-scale distributed systems and backend services.
• Hands-on experience with data processing frameworks such as Apache Beam, Dataflow, or Spark, and orchestration tools like Airflow.
• Strong understanding of cloud infrastructure and data storage technologies (BigQuery, Bigtable, Redis, GCS, Kafka, Pub/Sub).
• Demonstrated experience delivering impactful projects through cross-functional collaboration.

Responsibilities

• Design and build large-scale distributed systems for data ingestion, transformation, and serving.
• Partner with ML and Serving teams to support feature engineering workflows.
• Contribute to the evolution of Feature Infra / Feature Store for scalable data.
• Collaborate on Identity Graph construction to enhance signal enrichment.
• Improve observability, resilience, and performance in high-throughput environments.
• Mentor engineers and define best practices for data/backend engineering.

Skills

Distributed systems

Real-time processing

Backend engineering

Mentoring

Collaborating cross-functionally

Education

Bachelor’s or Master’s in CS

Tools

Apache Beam

Dataflow

Spark

Airflow

GCP/AWS/Azure

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 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 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

The Ads Applied Data team builds and scales the foundational data infrastructure that powers Moloco's advertising platform. As a Senior Software Engineer, you will design, develop, and optimize distributed data systems for real-time and batch processing, ensuring reliable and low-latency delivery of data across the ads ecosystem. You'll work closely with Product, ML, and Data Science teams to enable feature engineering, identity resolution, and advanced user signal enrichment across online and offline pipelines.

Responsibilities

• Design and build large-scale distributed systems for data ingestion (Petabyte-scale), transformation, and serving.
• Partner with ML and Serving teams to support feature engineering workflows, connecting offline data to serving systems.
• Contribute to the evolution of Feature Infra / Feature Store, ensuring scalability, discoverability, and consistency of feature data.
• Collaborate on Identity Graph construction to unify user and device identifiers for more effective signal enrichment and targeting.
• Improve system observability, resilience, and performance in high-throughput, low-latency environments.
• Mentor engineers and help define best practices for data and backend engineering.

Qualifications

• Bachelor’s or Master’s degree in Computer Science, or equivalent technical field.
• 5+ years of software engineering experience with one or more modern languages (Java, Kotlin, Go, C++, C#, or Python).
• Proven experience designing and building large-scale distributed systems and backend services.
• Hands-on experience with data processing frameworks such as Apache Beam, Dataflow, or Spark, and orchestration tools like Airflow.
• Strong understanding of cloud infrastructure (GCP, AWS, or Azure) and data storage technologies (BigQuery, Bigtable, Redis, GCS, Kafka, Pub/Sub).
• Demonstrated experience delivering impactful projects through collaboration with cross-functional teams (Product, ML, Data Science).

Preferred Qualifications

• Experience with Feature Infra / Feature Store architecture and operations.
• Experience in Identity Graph design and construction to enhance user signal quality.
• Deep familiarity with AdTech or Machine Learning infrastructure domains.
• Experience working with Petabyte-scale data and high-availability systems.

Compensation & Benefits

• U.S.-based employees have access to medical, dental, and vision insurance, a 401(k) plan with company match, short-term and long-term disability coverage, basic life insurance, and well-being benefits and perks.
• U.S.-based employees also receive up to 12 scheduled paid holidays per calendar year and one Thrive Day off per quarter.
• Additionally, all employees have Flexible Time Off (FTO).
• The successful candidate may be eligible for a bonus and equity awards. Eligibility and amounts are determined by performance and the terms of the applicable plans.

The location for this role is listed above. For base pay range purposes, location-based compensation is grouped into the following regions. Your region is determined by your assigned work location.

• Region A: Menlo Park Office, New York Office, SF Bay Area, New York Metro Area
• Region B: Seattle Office, Seattle, Los Angeles/Orange County, San Diego, Austin, Boston, Washington DC Metro Area, Miami
• Region C: All other U.S. locations

Salary Ranges

Region A:
$188,000-$235,000 USD

Region B:
$169,200-$211,500 USD

Region C:
$159,800-$199,750 USD

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
• Moloco Leadership
• Moloco Newsroom

AI Use in Interviews

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