Senior Software Engineer

What You'll Do 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. What Your Responsibilities Will Be Build scalable, secure, and high-performing backend and frontend systems for Avalara’s global compliance platform. Design and operate distributed systems, application programming interfaces, and cloud-based services. Use AI-assisted development, testing, documentation, and technical exploration to improve engineering velocity and quality. Contribute to AI-enabled product capabilities that improve automation, data processing, and customer-facing intelligence. Improve deployment frequency, code quality, and automated test coverage through continuous integration and delivery practices. Strengthen system reliability and observability through thoughtful architecture, monitoring, and proactive issue prevention. Lead technical design discussions and influence architecture for complex systems. Collaborate with global engineering, product, and business stakeholders in English. Mentor engineers, provide peer feedback, and ra What You’ll Need To Be Successful 8+ years of professional software engineering experience, with hands-on experience building scalable services using .NET and C#. Experience designing and operating distributed systems, RESTful and/or GraphQL application programming interfaces, and production systems in AWS. Experience with Infrastructure as Code tools such as Terraform, continuous integration and delivery pipelines such as GitLab, Docker, Kubernetes, and relational and/or NoSQL databases. Strong knowledge of automated testing strategies, code quality practices, observability, and production reliability. Demonstrated use of artificial intelligence to improve measurable engineering or outcomes, such as cycle time, automation, quality, or deployment efficiency. Strong English communication skills and the judgment to evaluate AI-generated outputs, apply AI responsibly and securely, mentor peers, and leave systems and practices stronger than you found them. Avalara is an AI-first Company 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. How We’ll Take Care Of You 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 diversit y  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.  What You Need To Know About Avalara 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.