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Senior Machine Learning Engineer



Software Engineering
Santiago, Santiago Metropolitan Region, Chile
Posted on Tuesday, April 11, 2023
🔔 ZeroFox is officially a public company, and we’re on a mission to make the internet safer. Read more here:
At ZeroFox, we are passionate about bringing world-class protection to the digital-first world. Together, we have built a system capable of collecting and analyzing data from all over the internet, creating a paradigm-shifting cybersecurity product that helps secure and protect our customers and improves the global threat landscape.
We are a team of software engineers, cybersecurity experts, and data scientists who continue to develop unparalleled solutions for the cyber security industry by providing the best Digital Risk Protection SaaS in the global market. Our company, services, and user base are growing faster than ever and we’d like you to help us innovate. We believe the greatest solutions in the Digital Risk Protection space come from composing teams with varied backgrounds and experiences that can use their complementary skill sets to come up with the best market-defining solutions.
Along the way, you’ll expand your potential with constant opportunities to learn and grow alongside exceptionally knowledgeable, competent, and collaborative people.
If you want to be part of a group of talented, empathic individuals with a multitude of different backgrounds, who are committed to each other and to the overall success of the team and our customers, we want to hear from you! At ZeroFox, soft skills are just as important as technical ability!

Role and responsibilities

  • Collaborate with industry experts across security, machine learning, digital risk protection, and cyber threat intelligence to develop cutting-edge machine learning solutions for the ZeroFox platform.
  • Help define machine learning roadmaps and projects for your team.
  • Design, develop, and deploy advanced machine learning models for natural language processing and computer vision applications, to enhance the lives of our customers while making the internet a safer place.
  • Evaluate and improve the accuracy, efficiency, and scalability of existing ML models.
  • Conduct research and stay up-to-date with the latest advancements in NLP and computer vision techniques to integrate them into our solutions.
  • Collaborate with product managers, data scientists, and software engineers to integrate ML models into the ZeroFox platform.
  • Analyze and preprocess large, diverse datasets, ensuring the quality and integrity of the data used for model training and evaluation.
  • Maintain clear and well-documented code to ensure long-term sustainability and smooth collaboration with other team members.
  • Provide technical guidance and mentorship to junior engineers, and ensure your team’s growth and success.

Required qualifications and skills

  • Motivated, communicative, teamwork-oriented leader who is comfortable working in agile environments and is able to learn and adapt quickly
  • Bachelor’s degree in computer science, math, physics, or a related field, OR equivalent education or experience
  • Machine learning experience, typically a minimum of 5 years
  • Team and/or project leadership experience, typically a minimum of 2 years
  • Proficiency in PyTorch, TensorFlow, or similar machine learning frameworks
  • Proficiency in Python
  • Solid understanding of data structures and algorithms

Desired qualifications and skills

  • Strong knowledge of NLP techniques, including but not limited to tokenization, parsing, sentiment analysis, topic modeling, and named entity recognition.
  • Strong knowledge of computer vision techniques such as object detection, segmentation, image classification, and OCR.
  • Strong applied knowledge of statistics
  • Familiarity with deep learning and/or reinforcement learning
  • Familiarity with model fine tuning
  • Familiarity with good software engineering practices
  • Experience with cloud platforms such as AWS, Google Cloud, or Azure
  • We also value equivalent experience to those languages, frameworks, and tools. If you think you might be a fit, apply!


  • Full flexibility to work from home or office
  • Opportunities to learn and contribute your knowledge to our Digital Risk Protection platform
  • Competitive compensation
  • Flexible work hours and competitive PTO
  • Complementary health insurance
  • Daily catered lunches for in-office work
  • Respectful and nourishing work environment, where every opinion is heard and everyone is encouraged to be an active part of the organizational culture.
  • Regular team bonding activities like cooking and cocktails classes, bingos, stand up comedy, magic shows, virtual happy hour, lunch and learns, etc.
  • Additional Parental Leave
  • Training and growth monthly stipend
  • Excellent communication: between teams, people, organizations and leaders


  • Ready to apply? Visit us at to find out more and join the best team in the security industry.
  • Not ready to apply? Email careers_at_zerofox_dot_com to speak with a member of the team!
ZeroFox’s mission is clear: we protect customers - their data, their assets and their people - across the internet. Through AI-powered technology, global intelligence collection and services provided by a team of expert analysts and threat hunters, we give customers the protection and intelligence needed to disrupt a new era of attacks on the surface, deep and dark web. Now is a great time to join the Fox Den: we recently announced our intent to become a publicly traded company via a merger with L&F Acquisition Corp. and were named a Top Workplace by the Baltimore Sun. With $150M+ in funding to date, recognition from Forrester as best-in-class in brand intelligence and numerous awards and honors, joining the ZeroFox team means joining a culture that is committed to excellence and growth. That means committing to the success of each of our employees so you can be the best version of yourself on the best team. If you’re ready to join a team that is mission-oriented, customer-focused, collaborative and dedicated, you’ve come to the right place.
Equal Opportunity, Diversity & Inclusion
We aim to build a team that represents a variety of backgrounds, perspectives, and skills. We embrace inclusion and ensure equal employment opportunity without discrimination or harassment based on race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity or expression, age, disability, national origin, marital or domestic/civil partnership status, genetic information, citizenship status, military or veteran status, or any other personal characteristic.