.At Auctane, we are united by a passion to help sellers — wherever they are, however they operate — fulfil the promises they make to consumers. The Auctane mission is to fuel commerce through exceptional delivery. We make it possible for businesses to meet the ever-rising expectations of their customers, and we make the world smaller and more accessible to consumers everywhere. Auctane brands enable hundreds of thousands of merchants to annually deliver billions of products — over $200 billion worth — to customers around the globe. And Auctane is just getting started.Auctane is a team of shipping and software experts with a passion for helping merchants move their ideas, dreams and innovations around the globe. The Auctane family includes ShipStation, ShipWorks, ShipEngine, ShippingEasy, Stamps, Endicia, Metapack, Shipsi, GlobalPost, and Packlink. Our partners include Amazon, UPS, USPS, eBay, BigCommerce, Shopify, WooCommerce, and Walmart.About the role We're looking for an experienced Senior Software Engineer with proficiency in the C# ecosystem to join our Spain-based ShipEngine Apps team. In this role, you will be responsible for planning and implementing features that serve as the foundation for a shipping platform used by millions of people worldwide while serving as a mentor for mid-level and associate engineers.What you'll be doing? Be an active contributor during the design and implementation phases of the Software Development Lifecycle (SDLC) Apply software engineering best practices while modifying/enhancing our software platform.Attend and contribute to design review meetingsOffering input into the designs of product enhancements and third-party integrations and documenting designsActively documents and demonstrates solutions by developing documentation, flowcharts, layouts, diagrams, charts, code comments, and clear code.Collaborate with other members of the software engineering team to develop shipping software products Working closely with other developers and product managers throughout the SDLCBeing responsible for the design and implementation of new product features and enhancements with guidance and input from other team membersWriting tests to support any source code changes made by this individual, performing code reviews, and related activities that contribute to the development and maintenance of the Auctane software.Provide feedback to the team on product improvement ideasThe Tech stack: C#,