Software Development Engineer - .Net or RoR

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'll be part of the team developing Avalara1099 (formerly Track1099), a very popular product line built with Ruby on Rails and a Postgres database. This product's next journey includes expanding its APIs and UI using C# and React. You will join a 15-person Scrum team and report to a Manager of Software Engineering, working remotely, anywhere in Brazil. In this role, you will write reusable, testable, and efficient code using test-driven development, collaborate with engineering, product, and business teams to ship new features, and address non-functional requirements like security, performance, and load. You will also be expected to raise engineering standards through ownership, technical judgment, mentoring, and the responsible use of AI — we expect every engineer, manager, and leader to actively leverage AI to enhance productivity, quality, innovation, and customer value, as AI is embedded in our workflows, decision-making, and products. This position is also open to people with disabilities (PcD), in accordance with Law No. 8. 213/91 (Esta vaga também é destinada a pessoas com deficiência (PcD), conforme Lei nº 8. 213/91). *Only CVs in EN will be considered* #LI-remote What Your Responsibilities Will Be - Exposure of a software development role, shipping complex applications to large scale production environments. - Basic Understanding of Relational Databases (Postgres). - Good object-oriented programming technique and debugging skills. - Experience with data structures and algorithm. - Experience working in an Agile team. - Someone who loves to write optimized code. - Experience approaching a problem from different angles, analyzing pros and cons of different solutions. - Motivated, persistent and "Never Give Up" attitude. - Experience with innovation and adaptability to a lean start-up culture. - Creativity, enthusiasm, and flexibility.

What You'll Need To Be Successful - Experience communicating updates and resolutions to customers and other partners. - Bachelor's degree or higher in computer science or engineering is required. - 8+ years of experience in Ruby on Rails or C#. - Experience publishing and consuming Rest APIs. - Knowledge of building CI/CD pipelines (GitLab, Terraform). - Familiar with containerization technologies (Docker, Kubernetes, ECS). - Experience to Cloud technologies (AWS, Azure, Google Cloud). - Experience with Docker containers and Kubernetes (K8s), Docker Swarm as an orchestrator platform. - Experience securing web applications. - Understanding of scalable systems and low latency APIs. - Understanding of engineering for available and fault tolerant systems. - It is a position with international interaction teams, only resumes sent in English will be considered. - Raise standards for technical troubleshooting, root cause analysis, and resolution quality. - Improve team capability through mentorship, knowledge sharing, and clear documentation. - Reduce repeat issues by driving systemic fixes and improving diagnostic approaches. - Strengthen cross-functional execution by improving clarity and collaboration with Engineering and Product. - Identify opportunities to improve processes, tools, and workflows that increase scalability and efficiency. - Leave systems, documentation, and team capability stronger than they found them. - Use AI tools to accelerate development, root cause analysis, summarize case histories, and generate high-quality knowledge base content. - Identify automation opportunities that reduce manual troubleshooting effort.