Senior Machine Learning Engineer (Remote, North America)

Vivun is the leading provider of Technical Sales solutions, which includes the world’s first AI Sales Engineer, and is fully dedicated to helping companies use AI to scale technical expertise, build better products, and run better operations. Customers like ADP, Coupa, Docusign, Elastic, Seismic, and Snowflake leverage Vivun solutions to win more deals faster, with a lower cost of sale.

Position Summary:

As a Senior Machine Learning Engineer, you will be responsible for driving the design, development, and evolution of AI/ML solutions that are integral to Vivun’s mission. You will build and scale AI-driven solutions that equip our AI Sales Engineer, Ava, with the skills to understand complex customer needs, deliver specialized technical guidance, and proactively generate work products to accelerate deals. You’ll work with LLMs on RAG pipelines, knowledge engineering systems, multi-agent workflows, while also refining traditional ML pipelines. In this high-impact role, you will collaborate closely with product managers, designers, and fellow engineers to drive the development and realization of the next generation of Vivun’s agentic products.

• You will design and develop LLM-powered AI solutions that incorporate RAG, tool calling, structured outputs, as well as knowledge and memory management.
• You will oversee the deployment and monitoring of machine learning systems in production environments.
• You will optimize and scale inference for both real-time and batch processing, ensuring low-latency and cost-efficient AI execution.
• You are an owner of quality by evaluating models/agents, both offline and online, as well as implementing and maintaining production observability tools.
• You will build and contribute to scalable data and ML infrastructure.
• You will collaborate with cross-functional teams to align AI development with business needs.
• You are adaptable and comfortable with the ambiguity of working in a highly dynamic agentic/LLM development space, evaluating emerging technologies and methodologies to continuously enhance system performance.
• You ensure adherence to security standards and data governance best practices.

• 7+ years of experience building, deploying, and operating reliable data and ML systems in production environments
• BS/MS/PhD in Computer Science, Data Science, Engineering, or a related field
• Strong proficiency in writing maintainable, production-quality Python code
• Deep knowledge of AI/ML algorithms, including clustering, supervised/unsupervised learning, natural language processing (NLP), and large language models (LLMs)
• Extensive hands-on experience writing SQL and working with databases
• Experience with AI/ML observability, monitoring, and evaluation frameworks
• Advanced understanding of CI/CD pipelines (CircleCI, Harness) and API development best practices with FastAPI
• Proven experience mentoring and guiding engineering teams, with a track record of driving complex projects in dynamic environments
• LangChain, LangGraph, scikit-learn, XGBoost, Transformers, FastAPI, Celery, Pydantic
• Postgres, Snowflake, Redis, Kafka, Vector databases
• Docker, Kubernetes, OpenTelemetry, AWS, RDS, SageMaker

• Passionate About AI: You embrace emerging technologies and push the boundaries of agentic experiences.
• Clear Communicator: You articulate strategies and informed opinions clearly, with solid rationale. You also understand the value of listening.
• Excellent Collaborator: Nothing at Vivun is someone else’s problem. You work across roles and departments to achieve company goals.
• Technical Innovator: You take ownership of features from design to deployment, building robust and scalable systems. You excel at diagnosing and resolving complex issues while ensuring performance, maintainability, and reliability.
• Tenacious Problem Solver: You tackle tough challenges head-on, using a methodical approach to uncover what’s happening and how to fix it.
• Creative and Systematic: You thrive in ambiguity, combining creativity with rigorous thinking to build clarity and consensus around the best solutions.
• Growth Mindset: You’re a lifelong learner who views each challenge as an opportunity for professional and personal growth.
• Ownership: You take initiative, celebrate progress, and go the extra mile for your peers. You care about both the big picture and the details.

• Competitive salary and full health benefits
• Stock Options at a well funded, pre-IPO company on a fast growth track
• Flexible work schedules and work from anywhere at a fully remote company
• Unlimited PTO with two weeks designated as “quiet period” each year
• An experienced team who will fight beside you in the trenches to accomplish your goals