Software Engineer
Affinity Labs
Software Engineering
London, UK
Posted on Nov 10, 2025
Direct message the job poster from Quantcast
At Quantcast, we're redefining what's possible in digital advertising. As a global Demand Side Platform (DSP) powered by AI, we help marketers connect with the right audiences and deliver measurable results across the Open Web. Our foundation is built on cutting-edge measurement and consumer analytics, giving our clients the tools they need to drive success in an ever-evolving digital landscape.
Since our start in 2006, we've pioneered industry firsts—from launching the original measurement platform for digital publishers to introducing the first AI-driven DSP. If you're ready to be part of a dynamic, forward-thinking team that thrives on creating transformative solutions, Quantcast is the perfect place to grow your career.
At Quantcast, we use technology to help brands and publishers understand, reach and influence the constantly-changing behaviors of consumers. The Real-Time Bidding (RTB) Platform owns and operates the large-scale distributed stack which allocates millions of dollars of advertising budget to billions of bid opportunities streaming into the system. If you’re interested in working on these critical, fast, large-scale distributed systems then we’d like to meet.
As a Software Engineer, you care about the health and maintainability of our systems and the velocity of the engineering teams. You write code, design systems, build out proof of concepts that improve systems and automation throughout our products and tech stack.
What You'll Do
Founded in 2006 and headquartered in San Francisco, we are a diverse, aligned community with offices across 10 countries worldwide. Join the team that unlocks potential.
Quantcast is an Equal Opportunity Employer.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
Since our start in 2006, we've pioneered industry firsts—from launching the original measurement platform for digital publishers to introducing the first AI-driven DSP. If you're ready to be part of a dynamic, forward-thinking team that thrives on creating transformative solutions, Quantcast is the perfect place to grow your career.
At Quantcast, we use technology to help brands and publishers understand, reach and influence the constantly-changing behaviors of consumers. The Real-Time Bidding (RTB) Platform owns and operates the large-scale distributed stack which allocates millions of dollars of advertising budget to billions of bid opportunities streaming into the system. If you’re interested in working on these critical, fast, large-scale distributed systems then we’d like to meet.
As a Software Engineer, you care about the health and maintainability of our systems and the velocity of the engineering teams. You write code, design systems, build out proof of concepts that improve systems and automation throughout our products and tech stack.
What You'll Do
- Code, test, debug and maintain software applications handling millions of real-time requests per second efficiently.
- Constantly improve development, testing, configuration management, monitoring, and operational tools and processes.
- Work and collaborate closely with cross-functional teams, including product engineering, modeling, and other platform teams, to ensure delivering high-quality software products.
- Profiling and optimizing bidding machines.
- Setting up and running experiments to improve stability, reliability, and bidding performance across the stack.
- Providing tooling for other software engineers to run their services.
- Participating in oncall duties.
- 1-2 years experience developing and working on distributed software systems as a Software Engineer.
- Skills in distributed system and software design, concurrent algorithms, data structures, and software engineering.
- Hands-on experience with Java, Golang, or a similar language.
- Degree in a topic related to Computer Science, or equivalent.
- Bonus: Experience in programmatic advertising.
Founded in 2006 and headquartered in San Francisco, we are a diverse, aligned community with offices across 10 countries worldwide. Join the team that unlocks potential.
Quantcast is an Equal Opportunity Employer.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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Seniority level
Entry level -
Employment type
Full-time -
Job function
Engineering and Information Technology -
Industries
Technology, Information and Internet