Senior Software Engineer, Features

Job Description

Are you ready to revolutionize the advertising industry?

At Cognitiv, we are not just another AdTech company—we are industry trailblazers redefining media buying with our Deep Learning Advertising Platform. Since 2015, we have harnessed the power of cutting-edge deep learning technology and data science to transform how brands connect with their customers. Our mission? To bring intelligence to advertising and deliver unparalleled precision, relevance, and impact at scale.

With our innovative platform, advertisers enjoy unprecedented flexibility—whether it is activating Dynamic Deals through their preferred DSP, leveraging our managed service DSP, or utilizing our industry-first ContextGPT product. As a part of Cognitiv, you will be at the forefront of AI-driven advertising solutions, driving change and achieving remarkable growth in a rapidly evolving industry.

Now, we’re growing—and looking for a Senior Software Engineer, Features to join our Features Generation team!

The Role

Our models are only as good as the features that go into them. This role is all about building the features that power our models. Success here means enabling our Science team to build better models—which directly drives better performance on our campaigns.

Location: 📍 Bellevue, WA (Hybrid) – We collaborate in-office Monday through Wednesday, with the option to work remotely Thursday and Friday.

What You'll Do

Build low-latency pipelines – Deliver user features to our Feature Store within seconds of an event occurring, ensuring models have the freshest data possible.

Leverage LLMs for embeddings – Generate user and contextual embeddings that power advanced model performance.

Maintain and expand features – Ensure existing features are reliable and healthy while designing new ones to improve outcomes.

Collaborate with Science – Partner closely with data scientists to define, prioritize, and ship impactful new features.

Tech Stack

Python

SQL (e.g., ClickHouse)

Spark

Docker

RedPanda

Flink

Who You Are

Big Data + SQL expert – You’ve worked with large-scale data systems and know how to design efficient queries

Python engineer – You write clean, production-grade code in Python

Collaborative partner – You thrive in cross-functional work and enjoy building with data scientists and other engineers

Feature-focused mindset – You’re curious about how features influence models and motivated to improve them

Bonus Points If You Have

Machine learning exposure – Experience with ML pipelines or feature engineering

Spark at scale – Hands-on expertise running large-scale jobs

C# or Java skills – Comfort working across additional languages for production systems

What You’ll Find at Cognitiv

Festiv – We make work fun with cross-team games, events, and creative team bonding

Responsiv – You’ll be close to clients and leadership, influencing real outcomes

Inclusiv – Diversity and individuality are celebrated across all levels

Inventiv – We reward curiosity and embrace bold ideas

Transformativ – We support your growth with training, mentorship, and flexibility

Collaborativ – We operate across coasts, connected by purpose and teamwork

Location & Compensation

Location: Bellevue (hybrid: 3 days in-office, 2 days remote)

Compensation is based on experience, skills, and other factors. Base salary is just one part of your total rewards at Cognitiv—you’ll also receive equity and a comprehensive benefits package.

Highlights include:

Medical, dental & vision coverage (some plans 100% employer-paid)

12 weeks paid parental leave

Unlimited PTO + Work-From-Anywhere August

Career development with clear advancement paths

Equity for all employees

Hybrid work model & daily team lunch

Health & wellness stipend + cell phone reimbursement

401(k) with employer match

Parking (CA & WA offices) & pre-tax commuter benefits

Employee Assistance Program

Comprehensive onboarding (Cognitiv University)…and more!