Senior Software Development Engineer

Avalara is a leading provider of cloud-based tax compliance solutions. Our mission is to simplify tax compliance for businesses of all sizes through scalable, secure, and high-performing technology. We operate as an AI-first company, embedding AI into how we build, operate, and deliver products to improve speed, quality, automation, insight, and scale.

Avalara is accelerating delivery of AI-enabled capabilities across its global compliance platform to improve customer outcomes, increase engineering velocity, and scale operations efficiently.

This role is focused on improving system reliability, accelerating AI-enabled product delivery, and raising engineering standards across a global organization. In this role success is measured through faster delivery, stronger system resilience, and effective adoption of AI in both engineering workflows and customer-facing capabilities.

As a Senior Software Engineer, you will build scalable, reliable distributed systems while driving engineering velocity through applied AI and automation. You'll also elevate team performance through technical leadership, ownership, and mentoring.

Ultimately, this role shapes both what we build and how we build it, embedding AI into the development lifecycle while strengthening engineering discipline.

• →Build and operate scalable, secure, and high-performing systems for Avalara's global platform, ensuring strong reliability, observability, and performance at scale
• →Drive engineering velocity and quality by embedding AI into development workflows (coding, testing, design, documentation) and strengthening CI/CD practices
• →Design and deliver AI-enabled product capabilities that improve automation, data processing, and measurable customer outcomes
• →Lead technical design and architectural decisions for complex distributed systems, balancing scalability, cost, and reliability
• →Reduce production issues through proactive system design, improved architecture, and strong operational practices
• →Demonstrate and drive measurable impact from AI (e.g., improved speed, quality, automation), while ensuring responsible, secure, and well-governed AI adoption across engineering and product development .

• Bachelors in Computer Science/Engineering with 8+ years of building and owning scalable, distributed systems at a senior level.
• Strong hands-on experience with .NET (C#) / JAVA / Python and React (TypeScript), including designing and operating APIs (REST/GraphQL) in cloud-native environments (AWS), with Infrastructure as Code (Terraform), CI/CD pipelines, and containerization (Docker/Kubernetes).
• Solid understanding of databases (relational/NoSQL) and automated testing strategies across the development lifecycle.
• Demonstrated hands-on use of AI with measurable impact on engineering or business outcomes, with the ability to apply it responsibly and effectively.
• Experience working on SaaS or enterprise-scale platforms, ideally within compliance, financial, or other regulated domains, and leading cross-team technical initiatives
• Strong English communication skills, with the ability to collaborate across global teams, influence decisions, and drive alignment.

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.

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.