Full-Time

Senior AI/ML Engineer

Python & Scientific Computing

Posted on 8/21/2026

Swayable

Swayable

51-200 employees

Ad pre-testing using RCT data science

Compensation Overview

$175k - $250k/yr

San Francisco, CA, USA

In Person

Master's, PhD

Category
AI & Machine Learning (1)
Software Engineering (1)
Required Skills
Scikit-learn
Python
JavaScript
Data Visualization
Node.js
Machine Learning
GraphQL
Pandas
Vue.js
MongoDB
Flask
NumPy
Linux/Unix
Celery

Get referred to Swayable

See people who can refer or advise you

Requirements
  • You have 5+ years of professional experience building scientific or quantitative data-intensive software.
  • You have expertise in the scientific Python stack, object-oriented and test-driven development, vectorized code, and machine learning.
  • You have expertise in architecting, maintaining, and optimizing distributed, parallel computing systems.
  • You keep up with the constantly evolving toolset for machine learning and artificial intelligence operations.
  • You are knowledgeable about software architecture and can design scalable, performant solutions.
  • You value code quality and write maintainable, testable code.
Responsibilities
  • You will be responsible for building, maintaining, and continuously improving the tools, techniques, and architecture for high-performance computing.
  • You will work with a talented and diverse team of engineers, data scientists, and research staff to build new features and solve novel problems across software engineering, data visualization, and science.
  • You will be part of the team that productizes all artificial intelligence, machine learning, and data analysis at Swayable.
Desired Qualifications
  • You have a thorough knowledge of the Linux operating system.
  • You have experience with Celery and MongoDB.
  • You believe in the scientific method and use data to drive decisions.
  • You can give and receive informed, actionable feedback on technical and non-technical skills.
  • You are experienced at mentoring junior engineers.
  • You are a strong communicator, especially in text. You can write documentation and discuss the tradeoffs of different implementations.

Swayable provides a pre-testing platform that measures ad and message effectiveness before launch. It uses randomized controlled trials and data science to isolate the persuasive impact of each asset and analyzes custom audience segments, gathering insights from thousands of participants within about 24 hours. Major brands like Airbnb, Amazon, Meta, Paramount, T-Mobile, and Uber rely on it to save money and improve communications by identifying what works best. As a public benefit corporation, its goal is to help brands optimize ads and messages with truthful reporting and measurable results.

Company Size

51-200

Company Stage

Seed

Total Funding

$260K

Headquarters

San Francisco, California

Founded

2017

Get referred to Swayable

See people who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • Swayable launched Insights Factory in April 2026, delivering PowerPoint-ready insights within seconds.
  • Jobs postings in mid-2026 show hiring for CRO, VP Marketing, and AI scientists.
  • ARF trusteeship plus major-brand logos strengthen credibility for larger agency and advocacy deals.

What critics are saying

  • Swayable’s tiny reported funding base, $120K, limits resilience against slower enterprise sales.
  • AI testing tools from Adobe, Meta, and agencies commoditize pre-launch measurement by 2027.
  • Enterprise marketing budgets anchor revenue; one budget freeze can crush growth and trigger layoffs.

What makes Swayable unique

  • Swayable pairs patented RCTs with causal AI, not opinion surveys, for ad testing.
  • James Slezak joined ARF’s 2026 trustees, reinforcing Swayable’s scientific credibility with advertisers.
  • The platform serves Amazon, Airbnb, Meta, Paramount, T-Mobile, and Uber.

Help us improve and share your feedback! Did you find this helpful?

Benefits

Health Insurance

Paid Vacation

401(k) Retirement Plan

Equity Options

Professional Development Budget

Hybrid Work Options

Growth & Insights and Company News

Headcount

6 month growth

1%

1 year growth

1%

2 year growth

0%
PR Newswire
Mar 12th, 2026
Swayable CEO James Slezak joins Advertising Research Foundation board of trustees

James Slezak, CEO of Swayable, has been appointed to the Advertising Research Foundation Board of Trustees for 2026. The ARF, founded in 1936, comprises over 400 top advertisers, agencies and research firms, and trustees guide its mission to advance scientific practice in advertising and marketing. Swayable is a creative pre-testing platform that uses randomised controlled trials and machine learning to measure messaging impact. The company, founded by Slezak in 2018, serves major brands including Amazon, Airbnb, T-Mobile, DoorDash and Paramount. Slezak holds a PhD in experimental physics from Cornell University and previously served in senior roles at The New York Times and McKinsey & Company. He currently serves on the World Economic Forum's Global Future Council on Information Integrity.

PR Newswire
Oct 30th, 2024
Tyler Montague Joins Swayable as Vice President of Customer & Research Success

Tyler Montague joins Swayable as Vice President of Customer & research Success.