Full-Time

Senior Machine Learning Engineer

Recommendations

Posted on 10/3/2025

Inkitt

Inkitt

201-500 employees

Reader-powered publishing platform with data-driven deals

Compensation Overview

$200k - $250k/yr

San Francisco, CA, USA

Hybrid

Three days on-site per week in SOMA, San Francisco, CA.

Category
AI & Machine Learning (1)
Required Skills
Scikit-learn
Microsoft Azure
Python
Tensorflow
Neural Networks
Pytorch
Machine Learning
TypeScript
AWS
Go
REST APIs
Google Cloud Platform
Requirements
  • Master’s or PhD in Computer Science, Machine Learning, or a related field.
  • Five or more years of experience in developing and deploying recommendation systems at scale.
  • Proficiency in Python and experience with frameworks such as TensorFlow, PyTorch, or Scikit-learn.
  • Familiarity with Go API and TypeScript is a plus.
  • Deep understanding of machine learning algorithms and their application in personalized content recommendations.
  • Proven ability to move from theoretical models to practical, scalable application logic in production environments.
  • Experience with distributed systems and cloud infrastructure, such as Amazon Web Services, Google Cloud Platform, or Microsoft Azure.
  • A strong focus on reliability, performance, and maintainability in engineering practices.
  • Location: Onsite in SOMA San Francisco, California.
Responsibilities
  • Collaborate with cross-functional teams, including Product, Data Science, and Engineering, to design and implement scalable recommendation systems that deliver hyper-personalized experiences to users.
  • Develop and optimize machine learning models for recommendation engines, utilizing techniques such as collaborative filtering, content-based filtering, and deep learning.
  • Build and maintain infrastructure for model training, deployment, and real-time/batch inference, ensuring high performance and reliability.
  • Conduct A/B tests and analyze experiment results to iterate on recommendation strategies and improve key metrics such as user engagement and retention.
  • Contribute to the design and implementation of robust APIs and services, primarily in Python, Go, and TypeScript, to support recommendation features across our apps (Inkitt, Galatea, and CandyJarTV).
  • Ensure code and systems meet stringent reliability and performance standards, scaling seamlessly to support millions of users.
Desired Qualifications
  • Autonomous
  • Bring solutions instead of problems
  • Data driven
  • Quick to action
  • A high functioning workaholic
  • Looking for exponential career growth
  • Have lots of fun building a generational AI x Entertainment company

Inkitt runs a reader-powered publishing platform where readers can discover and read a wide range of books for free. Readers provide feedback and their reading behavior helps the platform identify which stories have high potential. Authors submit manuscripts, and Inkitt offers publishing deals to those popular with readers, distributing them on GALATEA and other formats. Revenue comes from the author share of book sales and premium content on the platform. What sets Inkitt apart is its data-driven approach: it uses reader engagement data to select books to publish, reducing risk for authors and giving readers a voice in which stories become published. The goal is to connect new authors with readers and build a sustainable, data-informed publishing model that benefits both sides.

Company Size

201-500

Company Stage

Series C

Total Funding

$116.8M

Headquarters

San Francisco, California

Founded

2014

Simplify Jobs

Simplify's Take

What believers are saying

  • $37M Series C funding from Khosla Ventures expands AI content.
  • 33 million users and dozens of bestsellers fuel global growth.
  • Author Subscription Program lets writers keep 100% of earnings.

What critics are saying

  • Author exodus erodes half-million base over AI content backlash.
  • EU AI Act imposes audits on ReadRank by mid-2026.
  • Wattpad's 90M users capture Galatea's multimedia market share.

What makes Inkitt unique

  • ReadRank algorithm predicts bestsellers using reader engagement data.
  • GalateaTV launches weekly short-form TV series from top e-books.
  • Hyper Personalisation adapts stories via AI to individual preferences.

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Benefits

401(k) Retirement Plan

Health Insurance

Dental Insurance

Vision Insurance

Growth & Insights and Company News

Headcount

6 month growth

-2%

1 year growth

-2%

2 year growth

-2%
TechHQ
Mar 4th, 2024
Inkitt: what happens when AI eats its own words?

The latest $37m funding round for the self-publishing platform Inkitt was awarded at least in part due to its intention to use large language models that work on behalf of its authors.

TechCrunch
Feb 27th, 2024
Inkitt, a self-publishing platform using AI to develop bestsellers, books $37M led by Khosla | TechCrunch

Everyone has a story in them, as someone famous once said. A startup called Inkitt believes that it can use AI to turn the strongest of these into

Inkitt
Jan 17th, 2024
Inkitt Launches GalateaTV: Bringing Your Favorite Stories to the Screen

Inkitt launches GalateaTV: bringing your favorite stories to the screen.

Inkitt
Dec 1st, 2023
What is The Inkitt Author Subscription Program? Charge for Your Content and Take Home 100% of What You Make.

For that reason, Inkitt GmbH has launched the Inkitt Author Subscription Program, connecting authors with readers who want to support them and their work.

Inkitt
Jun 30th, 2023
Inkitt

This month, Inkitt GmbH is kicking off the season of fun in the sun by introducing 27 new stories to Galatea !

INACTIVE