[Remote] Senior Machine Learning Engineer I // II

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.ResponsibilitiesExpand ML Capabilities – Identify, prototype, and integrate new ML technologies and infrastructure to enhance fraud detection effectiveness and scalabilityEnable High-Velocity Experimentation – Own the design and implementation of ML pipeline components that accelerate our innovationCollaborate Across Functions – Partner with Product, Engineering, and Risk teams to translate business requirements into technical solutions and ensure ML initiatives align with customer needsRaise the Bar – Foster a culture of technical excellence by championing best practices in testing, documentation, model monitoring, and developmentSkillsA degree in Computer Science, Statistics, or a comparable quantitative field4-6+ years of post-undergrad work experience in a production-grade ML environmentStrong foundation in machine learning theory, statistical evaluation, and experience with supervised/unsupervised learning at scaleProven track record of taking ML projects from research/prototype to high-scale production environmentsAbility to communicate technical findings clearly to both technical peers and non-technical stakeholdersProficiency in Python, SQL, key ML libraries, and SparkA strong outcome-oriented mindset—you care about the 'why' behind the models and the business impact they createAttention 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-commercePassion for writing well-tested production-grade codeA Master's Degree or PhDBenefitsDiscretionary Time Off Policy (Unlimited!)401K MatchStock OptionsAnnual Performance Bonus or CommissionsPaid Parental Leave (12 weeks)On-Demand Therapy for all employees & their dependentsDedicated learning budget through LearnerblyHealth InsuranceDental InsuranceVision InsuranceFlexible Spending Account (FSA)Short Term and Long Term Disability InsuranceLife InsuranceCompany Social EventsSignifyd SwagCompany OverviewSignifyd 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 SponsorshipSignifyd 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.