Full-Time

Senior Software Engineer

Ad Serving

Posted on 11/14/2025

Moloco

Moloco

501-1,000 employees

ML-powered ads targeting high-value users

Compensation Overview

$184k - $230k/yr

+ Base Pay Range

Seattle, WA, USA

In Person

Category
Software Engineering (1)
Required Skills
Rust
Microsoft Azure
Data Science
Machine Learning
Java
AWS
Go
C/C++
Google Cloud Platform
Requirements
  • 5+ years of software development experience on backend with high exposure to large scale distributed systems
  • Bachelor’s Degree or above in Computer Science or equivalent technical degree
  • Excellent software development skills and fluency in at least one server programming language (Go, Java, C, C++, Rust etc.)
  • Experience working in Cloud/Big Data platforms (e.g., AWS, GCP, Azure)
  • System Design and development skills; from gathering requirements to design to implementation to testing to production
  • Outstanding problem-solving skills and strategic planning
Responsibilities
  • Design, develop, and scale the core ad serving engine powering Moloco Ads, handling real-time bidding at massive scale
  • Drive improvements in scalability, reliability, and efficiency across a high-impact, high-ownership system
  • Build and maintain the core infrastructure that processes and optimizes ad delivery decisions
  • Work within the OpenRTB ecosystem, handling bid requests and responses in real time
  • Develop systems that determine which ads are served to which bids, operating at up to 10 million queries per second at peak
  • Collaborate cross-functionally with data, ML, and infra teams to continuously improve performance and business outcomes
Desired Qualifications
  • Experience working in software development for ad tech, specifically real-time bidding
  • Experience working closely with PMs to refine requirements while leading other engineers
  • Experience working closely with ML engineers and data scientists

Moloco provides programmatic digital advertising solutions that use machine learning and first-party data to help brands acquire and re-engage high-value users and monetize at scale. Its platform analyzes real-time signals and leverages a client’s own data to predict which users will convert, then serves and optimizes ads to meet specific advertiser goals across budgets, campaigns, and geographies. Unlike many competitors, Moloco focuses on delivering outcomes for any advertiser goal and maximizing the value of every user, aiming to help businesses grow revenue and expand their customer base. The company targets performance advertising, emphasizing high-value user acquisition, user monetization, and scalable growth.

Company Size

501-1,000

Company Stage

Series C

Total Funding

$191.6M

Headquarters

Redwood City, California

Founded

2013

Simplify Jobs

Simplify's Take

What believers are saying

  • Costco partners with Moloco for Q2 2026 beta to scale retail media network.
  • Performance CTV ads deliver 1.5x higher ROI than mobile with 66% app installs in 6 hours.
  • Dawn Ostroff joins board in 2026 to expand AI platform across media landscapes.

What critics are saying

  • OpenAI launches autonomous ad agents in June 2026, obsoleting Moloco's ML platform.
  • Re-engagement models shift budgets from AppLovin and ironSource, eroding their shares in 6-12 months.
  • Google Cloud accelerates Moloco's models 10x faster, outpacing competitors in 3-6 months.

What makes Moloco unique

  • Moloco Cloud launched September 2020 enables self-serve programmatic ads with impression-level optimization.
  • Moloco Ads reaches 2 billion users across 2 million apps using first-party data and AI.
  • Moloco Commerce Media powers retail media for Costco Velocity with AI-driven relevancy.

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Benefits

Comprehensive health and wellness: Competitive health, dental, vision and life insurance (covered at 100% for you) and your family.

Professional development: Teach yourself something new and get reimbursed each year for your professional development.

Food and snacks: Enjoy lunch on us. We bring lunch in for employees everyday, In addition, our micro-kitchens are filled with healthy snacks and beverages for you to enjoy

Paid parental leave: Our maternity/paternity leave plan also has you covered when you welcome a new child into your family.

Unlimited vacation: We encourage team members to take time off to relax and recharge with our flexible paid time off policy.

Financial benefits: We provide stock options and generous 401k/pension with an employer match that helps you prepare for your future.

Growth & Insights and Company News

Headcount

6 month growth

-1%

1 year growth

0%

2 year growth

1%
MarTech360
Apr 16th, 2026
Moloco launches ai-powered Performance CTV to bring mobile-grade precision to connected TV.

Moloco launches ai-powered Performance CTV to bring mobile-grade precision to connected TV. The company Moloco has launched Moloco Ads for Performance CTV, which is a newly launched AI-based advertising platform for app advertisers to leverage the capabilities of mobile ads into CTV space. With the launch of the product, there is a huge move towards performance marketing where companies have started demanding measurable results in performance from their campaigns in CTV space instead of traditional brand marketing campaigns, which was earlier the norm in the sector. This new ad platform uses the same AI capabilities as its mobile ads business but in the case of CTV ads, optimizes every impression made against the intended results of the campaign. An important point here is the fact that the product is integrated with the measurement partners preferred by the advertisers. This makes attribution and report transparent and allows them to have the reports for publishers. As seen from the first campaigns, there can be up to 1.5x higher return on investment on CTV compared to mobile. It means that CTV starts to be a very promising option for modern advertising. The launch of the product shows clearly that mobile, retail media, and CTV will start converging into a single ecosystem which will become more performance-oriented thanks to AI technology.

Adweek
Mar 18th, 2026
Costco adds adtech firm Moloco to scale retail media network.

Costco adds adtech firm Moloco to scale retail media network. A new ad format aims to improve relevancy. 4 hours ago Costco is working with retail adtech firm Moloco Commerce Media to improve the relevancy of ads on its ecommerce website. The addition of Moloco comes shortly after Costco unveiled Costco Velocity, the retailer's revamped retail media network. Mark Williamson, avp of retail media at Costco, announced on LinkedIn that the partnership with Moloco will begin with a beta program during the second quarter. In February, Williamson announced the new name of Costco's ad business, arguing that its philosophy differentiates the retailer from the more than 200 retail media networks that have cropped up over the last few years. Costco is signing deals with adtech firms to power Costco Velocity's infrastructure. Kathryn Lundstrom is ADWEEK's commerce and sustainability editor. Recommended videos

LinkedIn
Sep 22nd, 2025
Here's to the next chapter. Exciting times ahead with Moloco! | Tauk (acquired by Moloco)

Here's to the next chapter. Exciting times ahead with Moloco!

Martechvibe
Sep 18th, 2025
Moloco, Skai Partner to Expand Retail Media Access

Moloco Commerce Media (MCM), a provider of AI-driven retail media solutions, has announced a partnership with Skai, the omnichannel advertising platform for commerce media.

The Fast Mode
Aug 22nd, 2025
Samsung Expands Mobile Cloud Gaming Platform to European Markets

Samsung's mobile cloud gaming platform is collaborating with Moloco, the AI performance advertising company that drives consistently strong results for mobile game advertisers through Moloco Ads, an AI-powered advertising platform built to deliver real business outcomes for mobile marketers.

INACTIVE