Senior Machine Learning Engineer

We need an experienced Machine Learning Engineer V with a background in enterprise software development to help drive the next stage of Avalara's agentic transformation.

On this team you will work with an experienced group dedicated to designing and implementing an agentic platform at massive scale. Your contributions will enable generative AI projects across Avalara, and have a direct impact on one of the most important projects in the company's history: the Avalara Avi Agent (AAA). The AAA is revolutionizing tax compliance for the industry by providing an agentic gateway that automate work at unprecedented rates - in concert with the enterprise partners where our customers work.

Your responsibilities as a Machine Learning Engineer V will span the entire development lifecycle, from conceptualization and prototyping to feature delivery and operationalization. You will report to the Director of AI/ML.

This is a fully US based remote opportunity

This role is not eligible for visa sponsorship.

You are a software developer with a blend of technical skills in the fields of Agentic and Generative AI, including deep familiarity with MCP and A2A protocols. You work well with others and know how to ensure systems are scalable, performant, reliable, accurate, and available.

We are looking for people who think quickly, love to learn, and specialize in implementation. Your responsibilities will include:

• Building the foundational framework for supporting LLM Applications at Avalara
• Leveraging best practices in software development, including Continuous Integration/Continuous Deployment (CI/CD) with functional and unit testing in place.
• Researching and applying the latest technologies and methodologies in machine learning and software development.
• Writing, reviewing, and maintaining high-quality code to industry standards
• Evaluating and continually improving agentic outcomes
• Leading code review sessions to ensure good code quality
• Documenting solutions to maintain a knowledge base and enable Avalara software agents
• Mentoring junior engineers to encourage a culture of collaboration
• Maintaining and enhancing, wherever possible, the platform's operational robustness

• Minimum of 8 years work experience building and deploying software in production, with a preference for Python
• Knowledge of and experience with LLMs like GPT, Claude, or LLaMa
• Experience building agentic systems and workflows, preferably at enterprise scales
• Proficiency working in cloud computing environments (AWS, Azure, GCP),
• Ongoing exposure to technological innovations in AI & ML (esp. GenAI).
• Expertise in design patterns, data structures, distributed systems, and experience with cloud technologies.
• Deep experience with and interest in supporting and maintaining mature high availability systems at scale
• Bachelor's degree with computer science exposure

Pay Range Details

The base pay range(s) below are provided in compliance with state specific laws. Pay ranges may be different in other locations.

Colorado $185,800-$306,600 (annually)

Washington $185,800-$338,800 (annually)

California $185,800-$371,100 (annually)

NYC $205,400-$371,100 (annually)

The pay range above is the general base pay range for you in the state listed. Your actual salary/wage may be based on several factors, such as geographic location, candidate experience and qualifications, market and business considerations. This role is eligible for an annual bonus based on company performance, depending on the terms of the applicable plan and your role.

#LI-Remote

AI is embedded in our workflows, decision-making, and products.  Success here requires embracing AI as an essential capability.

• You’ll bring experience using AI and AI-related technologies, ready to thrive here.

• You’ll apply AI every day to business challenges - improving efficiency, contributing solutions, and driving results for your team, our company, and our customers.

• You’ll grow with AI by staying curious about new trends and best practices, and by sharing what you learn so others can benefit too.

Total Rewards 

In addition to a great compensation package, paid time off, and paid parental leave, many Avalara employees are eligible for bonuses. 

Health & Wellness 
Benefits vary by location but generally include private medical, life, and disability insurance. 

Inclusive culture and diversity 
Avalara strongly supports diversity, equity, and inclusion, and is committed to integrating them into our business practices and our organizational culture. We also have a total of 8 employee-run resource groups, each with senior leadership and exec sponsorship. 

We’re defining the relationship between tax and tech.

We’ve already built an industry-leading cloud compliance platform, processing over 54 billion customer API calls and over 6.6 million tax returns a year. Our growth is real - we're a billion dollar business - and we’re not slowing down until we’ve achieved our mission - to be part of every transaction in the world.

We’re bright, innovative, and disruptive, like the orange we love to wear. It captures our quirky spirit and optimistic mindset. It shows off the culture we’ve designed, that empowers our people to win. We’ve been different from day one. Join us, and your career will be too.

We’re An Equal Opportunity Employer

Supporting diversity and inclusion is a cornerstone of our company — we don’t want people to fit into our culture, but to enrich it. All qualified candidates will receive consideration for employment without regard to race, color, creed, religion, age, gender, national orientation, disability, sexual orientation, US Veteran status, or any other factor protected by law. If you require any reasonable adjustments during the recruitment process, please let us know.