Senior Machine Learning Engineer

San Francisco, CA / New York, NYEngineering /Full-Time /HybridAttentive is the AI-powered mobile marketing platform transforming the way brands personalize consumer engagement. Attentive enables marketers to craft tailored journeys for every subscriber, driving higher recurring revenue and maximizing campaign performance. Activating real-time data from multiple channels and advanced AI, the platform personalizes content, tone, and timing to help brands deliver 1:1 messages that truly resonate.With a top-rated customer success team recognized on G2, Attentive partners with marketers to provide strategic guidance and optimize SMS and email campaigns. Trusted by leading global brands like GUESS, Urban Outfitters, and Steve Madden, Attentive ensures enterprise-grade compliance and deliverability, supporting trillions of interactions across more than 70 industries. To learn more or request a demo, visit or follow us on LinkedIn, X (formerly Twitter), or Instagram.Attentive’s growth has been recognized by Deloitte’s Fast 500, Linkedin’s Top Startups and Forbes Cloud 100 all thanks to the hard work from our global employees!Who we areOur engineering department consists of 200+ people across multiple teams, such as application development, infrastructure, data platform, machine learning, and security. We believe our company will win in the long run through product innovation. To get there, we obsess over iteratively delivering customer value through rapid prototyping and data-driven decision-making. We are seeking a self-driven and highly motivated Machine Learning Engineer to join our growing machine learning teams. As an early hire, you will contribute to the development of machine learning models and infrastructure needs across the Attentive platform and work with Product Management and Engineering to implement end-to-end modeling use cases. Why Attentive needs youYou have a proven track record of building systems that maintain a high bar of qualityYou deeply loathe regressions and take proactive steps to protect against them through a variety of testing techniquesYou are a collaborator, technical leader, and a great communicatorYou are constantly improving the quality of the project you are working on, both via direct contributions as well as long-term advocacy for larger-scale changesYou are enthusiastic about the high impact, fast-paced work environment of an late-stage startupAbout youYou have worked professionally building systems for 6+ years with experience on a single system long enough to see the consequences of your decisionsExperience with TensorFlow/Pytorch, xgboost, pandas, matplotlib, SQL, Spark or similar toolsYou have proficiency or experience with PythonYou have extensive experience using machine learning and data analysis, or similar, to build scalable systems and data-driven products, working with cross-functional teamsYou have a proven track record of building scalable, efficient, automated processes for large-scale data analyses, model development, model validation, and model implementation from modern researchOur scale8,000 brands powered by Attentive sent over 2.2 billion text messages over Cyber Week 2023 (Black Friday/Cyber Monday) representing a growth of 31% from 2022We sent 32 billion SMS messages in 2023, up 32% YoY. That’s an average of 87 million per dayOur production cluster contains over 18,000 containers which serve 200+ servicesOur streaming services process over 80 billion events per monthWhat we useOur infrastructure runs primarily in Kubernetes hosted in AWS’s EKSInfrastructure tooling includes Istio, Datadog, Terraform, CloudFlare, and HelmOur backend is Java / Spring Boot microservices, built with Gradle, coupled with things like DynamoDB, Kinesis, AirFlow, Postgres, Planetscale, and Redis, hosted via AWSOur frontend is built with React and TypeScript, and uses best practices like GraphQL, Storybook, Radix UI, Vite, esbuild, and PlaywrightOur automation is driven by custom and open source machine learning models, lots of data and built with Python, Metaflow, HuggingFace ð, PyTorch, TensorFlow, and PandasYou'll get competitive perks and benefits, from health & wellness to equity, to help you bring your best self to work.For US based applicants:- The US base salary range for this full-time position is $180,200 - $280,000 annually + equity + benefits- Our salary ranges are determined by role, level and location#LI-EF1Attentive Company ValuesDefault to Action - Move swiftly and with purposeBe One Unstoppable Team - Rally as each other’s championsChampion the Customer - Our success is defined by our customers' successAct Like an Owner - Take responsibility for Attentive’s successLearn more about AWAKE, Attentive’s collective of employee resource groups.If you do not meet all the requirements listed here, we still encourage you to apply! No job description is perfect, and we may also have another opportunity that closely matches your skills and experience.At Attentive, we know that our Company's strength lies in the diversity of our employees. Attentive is an Equal Opportunity Employer and we welcome applicants from all backgrounds. Our policy is to provide equal employment opportunities for all employees, applicants and covered individuals regardless of protected characteristics. We prioritize and maintain a fair, inclusive and equitable workplace free from discrimination, harassment, and retaliation. Attentive is also committed to providing reasonable accommodations for candidates with disabilities. If you need any assistance or reasonable accommodations, please let your recruiter know.