Note: The job is a remote job and is open to candidates in USA. Signifyd is a company that helps merchants confidently grow their businesses by building trusted relationships with their customers. The Senior Machine Learning Engineer will be responsible for building, maintaining, and monitoring production ML models and offline experimentation frameworks, contributing to fraud detection and ensuring robust systems.
Responsibilities
- Expand ML Capabilities – Identify, prototype, and integrate new ML technologies and infrastructure to enhance fraud detection effectiveness and scalability
- Enable High-Velocity Experimentation – Own the design and implementation of ML pipeline components that accelerate our innovation
- Collaborate Across Functions – Partner with Product, Engineering, and Risk teams to translate business requirements into technical solutions and ensure ML initiatives align with customer needs
- Raise the Bar – Foster a culture of technical excellence by championing best practices in testing, documentation, model monitoring, and development
Skills
- A degree in Computer Science, Statistics, or a comparable quantitative field
- 4-6+ years of post-undergrad work experience in a production-grade ML environment
- Strong foundation in machine learning theory, statistical evaluation, and experience with supervised/unsupervised learning at scale
- Proven track record of taking ML projects from research/prototype to high-scale production environments
- Ability to communicate technical findings clearly to both technical peers and non-technical stakeholders
- Proficiency in Python, SQL, key ML libraries, and Spark
- A strong outcome-oriented mindset—you care about the 'why' behind the models and the business impact they create
- Attention to detail is critical in fraud prevention. To demonstrate this, please start your response to the first application question with the word 'Stochastic'
- Previous experience in fraud, fintech, payments, or e-commerce
- Passion for writing well-tested production-grade code
- A Master's Degree or PhD
Benefits
- Discretionary Time Off Policy (Unlimited!)
- 401K Match
- Stock Options
- Annual Performance Bonus or Commissions
- Paid Parental Leave (12 weeks)
- On-Demand Therapy for all employees & their dependents
- Dedicated learning budget through Learnerbly
- Health Insurance
- Dental Insurance
- Vision Insurance
- Flexible Spending Account (FSA)
- Short Term and Long Term Disability Insurance
- Life Insurance
- Company Social Events
- Signifyd Swag
Company Overview
Signifyd is a provider of an enterprise-grade fraud technology solution for e-commerce stores. It was founded in 2011, and is headquartered in San Jose, California, USA, with a workforce of 501-1000 employees. Its website is https://www.signifyd.com/.Company H1B Sponsorship
Signifyd has a track record of offering H1B sponsorships, with 3 in 2025, 1 in 2024, 1 in 2023. Please note that this does not guarantee sponsorship for this specific role.