Principal Engineer/ Architect - Payments & Financial Platform

You will lead the architecture of Avalara's payments and financial platform, spanning eInvoicing, payments, and capital products.

At the core are three connected systems:

• eInvoicing & Live Reporting (ELR), a global document exchange platform for compliance

• Avalara Payments, which powers payment flows tied to invoices

• Avalara Capital, which enables financing and manages payments on behalf of customers

This role focuses on designing how these systems work together as a unified platform. You will partner with product and engineering to build scalable, compliant systems that support high-volume transactions across multiple countries.

You will work closely with globally distributed teams across Brazil, EMEA, and India, requiring regular working hour overlap to support collaboration and delivery.

This is a hands-on role where you translate product direction into real systems - especially in payments and financial workflows.

This is a remote role.

What Your Responsibilities Will Be

• Design and evolve a platform that connects invoicing, payments, and capital into a unified financial system
• Architect payment flows that integrate with multiple providers, banking partners, and regional systems
• Define patterns for high-volume transaction processing with strong guarantees around data integrity and auditability
• Partner with product teams to turn financial workflows (invoicing payment financing) into scalable systems
• Design for global expansion, including country-specific compliance, reporting, and payment requirements
• Collaborate with globally distributed teams across Brazil, EMEA, and India, ensuring effective alignment across time zones
• Identify and reduce risks related to transaction integrity, system failure, and cross-system dependencies
• Lead design reviews and contribute code to critical systems
• Establish standards for reliability, observability, and performance across financial workflows
• Guide teams in building AI-enabled capabilities such as anomaly detection and workflow automation
• Influence engineering decisions across distributed teams without formal authority

• Bachelor's degree in computer science or related field.
• 15+ years of software engineering experience, including full-stack development.
• Expertise in Java or C# programming
• Experience designing and scaling distributed systems.
• Experience of architectural patterns and system design best practices.
• Hands-on experience with CI/CD, AWS cloud services, and DevOps tooling (e.g., Terraform, Docker, and ECS).
• Experience with Agile methodologies, including TDD and BDD. - Experience migrating monolithic applications to microservices or serverless architecture.
• Experience with Enterprise Integration Patterns.

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

Avalara builds cloud software that automates tax and compliance inside the systems businesses already use, with a goal of becoming part of every transaction in the world. As Avalara expands beyond compliance into payments and financial services, this role helps define how invoicing, payments, and capital come together into a single platform. You'll work on systems where accuracy, scale, and real-world impact matter - in an environment that values ownership, clarity, and strong execution. 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., 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.