Senior Software Engineer, Machine Learning (SF)Join to apply for the Senior Software Engineer, Machine Learning (SF) role at PersonaSenior Software Engineer, Machine Learning (SF)Join to apply for the Senior Software Engineer, Machine Learning (SF) role at PersonaGet AI-powered advice on this job and more exclusive features.About PersonaPersona is the configurable identity platform built for businesses in a digital-first world. Verifying individuals and organizations is harder — but more important — than ever, with AI enabling fraudsters to launch sophisticated accounts at scale and regulations evolving rapidly.About PersonaPersona is the configurable identity platform built for businesses in a digital-first world. Verifying individuals and organizations is harder — but more important — than ever, with AI enabling fraudsters to launch sophisticated accounts at scale and regulations evolving rapidly.We’ve built Persona to support practically every use case and industry — that’s why we’re able to serve a wide range of leading companies. For example, Coursera uses Persona to ensure the right person is earning each degree . Meanwhile, OpenAI relies on Persona to keep bad actors out, protecting one of the world’s most powerful AI platforms from large-scale abuse in a time when AI is reshaping the way we work and live.We believe that making the internet safer and more human requires a team that reflects the diverse, global nature of the people we aim to serve . We’re growing rapidly and looking for exceptional people to join us.About The RoleWe’re building both a product and a technology, and we always prioritize acting in a customer-centric way. In this role, you'll tackle challenging machine learning problems, as Persona's product needs are increasingly complex to balance the ever-changing compliance requirements of our customer base, ranging from small startups to Fortune 10 companies. You’ll develop and optimize machine learning models, contribute to cutting-edge research in generative AI and deepfake detection, and build seamless user experiences that will directly impact the long-term quality of the Persona product.What You'll Do At PersonaArchitect and manage embedding storage and vector search solutions (e.g., ClickHouse, Pinecone) for low-latency similarity queries.Build and maintain reproducible data pipelines (batch/stream) that vectorize text and images, ensuring quality checks and monitoring.Implement CI/CD for model artifacts and infrastructure-as-code, supporting containerized deployments on Kubernetes or serverless platforms.Develop and execute end-to-end model testing (unit, integration, performance) with versioning and rollback capabilities.Monitor model performance and infra health (accuracy drift, latency, resource usage) with alerting via Prometheus/Grafana or similar.Optimize query and system performance through index tuning, capacity planning, and cost-efficient resource allocation.Collaborate with data scientists, engineers, and customers to integrate, scale, and customize ML solutions from startup pilots to enterprise-scale events.What You'll Bring To PersonaProduct-thinker: You build machine learning solutions that maximize product value while minimizing complexity. You understand and can resolve tensions between product requirements and engineering design for large-scale ML projects.Innovative mindset: You go beyond implementing what is tasked and suggest new algorithms and models that help push our product forward. You are naturally curious and embrace change.Expertise in ML techniques: You have a strong foundation in machine learning algorithms, deep learning, and computer vision. You stay updated with the latest research and can apply it to solve real-world problems.Independent thinking: You learn from your mistakes quickly and know how to unblock yourself when needed. You take initiative to tackle new problems and drive them to impactful solutions.Collaborative spirit: Collaboration isn’t just a buzzword for you; it’s your secret to success. You leverage the diverse perspectives of your teammates and sometimes go out of your way to learn other functions to get the job done.Nice to have5+ years of experience as a machine learning engineer or in a related roleExperience with large language models (LLMs) and natural language processingProficiency in training and tuning vision models like YOLO or CLIPFamiliarity with generative AI and deepfake detection technologiesExperience with ML frameworks such as TensorFlow or PyTorchBackground in computer vision, natural language processing, or related fieldsKnowledge of cloud platforms and services related to machine learning deployments$190,000 - $250,000 a yearCompensation & EquityThis salary range is the estimated base salary range. Base salaries are just one component of the total compensation package and are determined by a number of factors such as years of experience, expertise, qualifications and more. In addition to base salary, we offer competitive equity packages that play a big part in recognizing you for the huge impact you will have on helping us achieve our mission. Please note, the salary range is a guideline based on market data for roles located in the San Francisco Bay Area, and may vary depending on location. Salary ranges are subject to change without notice.Benefits And PerksPersona offers a wide range of thoughtful and inclusive benefits for this role, including medical, dental, and vision, 3% 401(k) contribution, unlimited PTO, quarterly mental health days, family planning benefits, professional development stipends, wellness benefits, unlimited paid time off, among others. While we believe competitive compensation and benefits are a critical aspect of you deciding to join us, we do hope you consider why our core values and culture are right for you. If you’d like to better understand what it’s like working at Persona, feel free to check out our reviews on Glassdoor .Diversity, equity, inclusion and belongingAt Persona, we strive to put diversity and inclusion at the forefront of everything we do, reflecting our core values. Our DEIB Employee Resource Group seeks to build a diverse and inclusive team that fosters an environment where each Personerd feels empowered to bring their unique differences to work and achieve their full innovative potential. Our hope is that by fostering such an environment, we strengthen our business and relationships by putting people first.We strive to promote a culture that celebrates diversity and inclusiveness regardless of, but not limited to, race, gender, sexual orientation, family status, religion, ethnicity, national origin, physical disability, veteran status, or age.Seniority levelSeniority levelMid-Senior levelEmployment typeEmployment typeFull-timeJob functionJob functionInformation Technology and EngineeringIndustriesIT Services and IT Consulting, Security and Investigations, and Software DevelopmentReferrals increase your chances of interviewing at Persona by 2xGet notified about new Senior Software Engineer jobs in San Francisco, CA.San Francisco, CA $132,700.00-$196,600.00 2 weeks agoSoftware Engineer Internship (7 openings)San Francisco, CA $90,000.00-$110,000.00 4 months agoSan Francisco, CA $130,000.00-$165,000.00 3 weeks agoSan Francisco, CA $150,000.00-$175,000.00 2 months agoSoftware Engineer, HTML - AI Training (Freelance, Remote)San Francisco, CA $150,000.00-$190,000.00 1 month agoSan Francisco, CA $105,000.00-$180,000.00 1 month agoSoftware Engineer - AI Training (Freelance, Remote)Software Engineer, Node.js - AI Training (Freelance, Remote)San Francisco, CA $120,000.00-$220,000.00 1 month agoCoders - AI Training (Freelance, Remote)Software Engineer, Python - AI Training (Freelance, Remote)Software Engineer - Applications PlatformSan Francisco, CA $40,000.00-$100,000.00 1 month agoSan Francisco, CA $175,000.00-$250,000.00 1 month agoSan Francisco, CA $150,000.00-$180,000.00 5 hours agoSan Francisco, CA $160,000.00-$205,000.00 3 weeks agoSoftware Engineer, SQL - AI Training (Freelance, Remote)San Francisco, CA $120,000.00-$150,000.00 4 weeks agoSoftware Engineer, TypeScript - AI Training (Freelance, Remote)Software Engineer, C# - AI Training (Freelance, Remote)San Francisco, CA $40,000.00-$100,000.00 1 month agoWe’re unlocking community knowledge in a new way. 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