Senior Software Engineer

About the role

About us

At Auctane, we are united by a passion to help businesses deliver — whatever their size, wherever they are, and however they operate. We make it possible for businesses to meet the ever-changing requirements of their industry and customer expectations. Auctane products enable hundreds of thousands of businesses to annually mail and ship billions of items — over $200 billion worth — to recipients around the globe.

The Auctane family of mailing and shipping software products includes ShipStation, Stamps.com, ShipStation API, Metapack, GlobalPost, and Packlink. Our partners include Amazon, UPS, USPS, eBay, BigCommerce, Shopify, WooCommerce, and Walmart.

Our values

Win as One. Delight Customers. Deliver Great Outcomes.

About the role

As a Senior Software Engineer, you will influence the architecture and evolution of our product and drive continuous improvement across our engineering ecosystem. You’ll design solutions, mentor junior engineers, and make strategic decisions about framework design and engineering best practices. At Auctane, we value professionals at every stage of their career journey. When applying for this position, please note that we’ll assess your profile and skills based on your experience level. Our goal is to build a diverse and complementary team that brings together different perspectives and levels of expertise. If you’re excited to contribute, we’d love to hear from you! This position is hybrid (2 days per week in office) and is located in Wroclaw.

What will you be doing?

- Design and architect components.

- Mentor junior software engineers and conduct technical code reviews.

- Develop comprehensive testing strategies for complex feature sets.

- Optimize system performance, reliability, and maintainability across the platform.

- Diagnose and resolve complex software, infrastructure and framework issues.

- Collaborate with product and engineering teams to define requirements.

- Drive documentation, knowledge sharing, and engineering standards.

- Manage technical debt and refactor systems for scale and performance

What are we looking for?

- Bachelor’s degree in Computer Science, Software Engineering, or related field (or equivalent professional experience)

- + 3 years of experience with .NET

- Strong software engineering fundamentals with focus on code quality and scalability

- Understanding and practical experience with Software Architecture

- Collaborative approach to working across teams

- Proficiency in Polish and English is required for this role

- Experience advocating for quality and engineering rigor within organizations

What will make you stand out?

- Demonstrated ability to architect and lead technical initiatives.

- Proven ability to architect and maintain large-scale software systems.