Senior Software Engineer

Avalara is accelerating delivery of AI-enabled capabilities across our compliance platform to improve customer experience, increase engineering velocity, and scale global operations. As a Senior Software Engineer, you will build reliable, scalable systems that support global transaction growth and help teams use artificial intelligence in practical, secure, and measurable ways. You will work with engineering, product, and business teams to deliver backend and frontend capabilities that improve automation, data processing, and customer insight. In this role you will be expected to raise engineering standards through ownership, technical judgment, mentoring, and responsible use of AI.

You will report to the Senior Manager of Software Engineering, and you will work remotely, anywhere in Brazil.

#LI-remote

• →Design, develop, test, and maintain scalable full-stack applications.
• →Build reliable APIs, integrations, and backend services.
• →Deliver clean, maintainable, and well-tested code following engineering best practices.
• →Participate in architecture discussions and technical design decisions.
• →Troubleshoot production issues and improve system performance, reliability, and scalability.
• →Collaborate with Product Managers, Designers, and Engineers throughout the software development lifecycle.
• →Contribute to code reviews and continuously improve development standards and processes.

• Build and enhance scalable SaaS applications and platform integrations.
• Develop high-quality full-stack solutions that support automated sales tax and compliance.
• Partner closely with Product, Engineering, and cross-functional teams to transform product vision into reliable, production-ready features.
• Contribute to a collaborative engineering culture focused on innovation, quality, and continuous improvement.
• Report directly to a Senior Engineering Manager.
• Individual Contributor (IC) role with no people management responsibilities.
• Fully remote position based in Brazil.

As a Bar Raiser, you will help elevate engineering excellence across the DAVO platform by:

• Setting a high standard for code quality, ownership, reliability, and operational excellence.
• Using data and engineering metrics (filing success rates, uptime, latency, MTTR, defect rates, operational efficiency) to drive technical and product decisions.
• Simplifying complex tax and compliance workflows into scalable, resilient, and maintainable systems.
• Mentoring and supporting engineers to strengthen technical expertise and ownership.
• Challenging assumptions constructively and driving measurable improvements across architecture, delivery, and operations.
• Continuously improving services, engineering practices, and platform scalability.
• Helping shape the long-term technical direction of the platform beyond feature delivery.
• Ensuring the platform remains reliable, secure, and capable of operating at scale.

Avalara continues to invest in AI-driven capabilities, this role is expected to incorporate AI into how tax automation, compliance workflows, and platform operations are designed and executed.

This role will:

• Design and implement AI-enabled solutions that improve the speed, accuracy, and scalability of tax collection, filing, and remittance workflows.
• Leverage AI tools to enhance development productivity, accelerate debugging, and improve root cause analysis for production and filing issues
• Identify high-impact opportunities where AI can reduce manual effort, improve reliability, or enhance the customer experience
• Apply AI thoughtfully with proper attention to data accuracy, compliance, security, and risk management
• Contribute to building AI capability within the team by sharing learnings and promoting effective, responsible usage

This role is expected to demonstrate practical AI impact—improving efficiency, reliability, or quality—rather than just using AI tools casually.

• Proven experience delivering high-quality features to production, with expertise in service-Oriented architectures, micro-services, and web application development. Strong understanding of system performance trade-offs, load balancing, and high-availability engineering
• Full-stack development experience with TypeScript, Node.js, and Python; adaptability across technologies is highly valued. Additional experience with Java, React, micro-services, web services, and REST APIs is a plus
• Experience working with MySQL and Aurora DB as primary transactional relational databases
• Familiarity with modern cloud and observability tools, including Redis, Prometheus, and Grafana. Experience with Docker for containerization, Kubernetes for orchestration, and AWS (experience with Azure or GCP is also welcomed)
• Collaborate cross-functionally to solve complex challenges and continuously improve application performance and efficiency
• Prior experience with tax industry is a plus
• Bachelor’s degree in Computer Science, Engineering, or a related field preferred
• 10+ years of professional software development experience 

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.