Senior Software Engineer

What You'll Do:

Avalara is an AI-first company. Every engineer is expected to apply AI to improve speed, quality, automation, customer outcomes, and operational scale. AI is embedded into how we build products, operate services, and deliver customer value. Success at Avalara requires using AI as a core engineering capability — not an optional tool.

As a Software Development Engineer, Backend on the Returns team, you will help modernize and scale Avalara’s Returns-as-a-Service (RaaS) ingestion platform that powers tax return preparation, filing workflows, and emerging AI-driven Returns experiences. This role exists to accelerate Avalara’s ability to ingest, validate, normalize, and operationalize increasingly complex tax data at scale while improving reliability, automation, and customer trust.

You will design and deliver scalable backend systems, APIs, ingestion pipelines, and operational tooling that improve filing accuracy, reduce operational friction, and enable faster onboarding of new data sources and filing capabilities. You will partner across engineering, product, operations, and platform teams to build systems that support Avalara’s long-term AI-first Returns strategy.

This role elevates Avalara by improving platform scalability, operational efficiency, and customer outcomes while helping establish engineering and AI practices that raise the performance of the broader organization. Successful candidates will demonstrate Bar Raiser behaviors through strong ownership, engineering rigor, customer focus, and continuous improvement of systems, processes, and team capability.

You will report to the Director of Engineering, Returns-as-a-Service Framework.

This is a remote opportunity. #LI-Remote

This role is not eligible for visa sponsorship.

What Your Responsibilities Will Be: * Design, build, and operate scalable ingestion services that process and validate large-scale tax and returns data with high reliability, accurac...