Senior Software Engineer .NET

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)
• + 5 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.
• Leadership capability without requiring formal management title.
• Initiative to identify and solve problems proactively.
• Passion for continuous improvement and staying current with engineering practices.
• Ability to balance pragmatism with technical excellence

The tech stack

• Google Suite
• AWS Cloud: Lambdas, EC2, ECS, S3, Parameter Store
• .NET
• Data: MS SQL Server, OpenSearch, PostgreSQL

What do we offer?

• Hybrid Framework - The best of both worlds! Work from home when you need focus and flexibility, and spend 2 days a week in the office for face-to-face collaboration, sharing ideas and catching up with the team. Because some things are simply better together!
• Personal Training Budget. Up to 7.000 PLN/ year training budget (certifications, conferences attendance, etc.) to invest in your professional development. We want to help you improve your technical skills, feel involved in the product community, and develop your soft skills to lead teams and manage other stakeholders.
• Internal and external training, free access to online training platforms such as Linkedin Learning
• Languages classes every week. Thirsty for knowledge? Learn a new language by joining our free English/Spanish/German classes. You can connect and enjoy taking up a new language or improving your current skills with one of our great instructors.
• Lunch card. Enjoy a subsidized lunch card and grab a meal with your teammates - because the best conversations often happen over lunch!
• Free private medical insurance. Take care of your health with private medical care fully covered by us
• Attractive life insurance. Extra peace of mind for you and your loved ones.
• Co-financed Multisport card - We support an active lifestyle because staying healthy and feeling good matters.
• Volunteer day. You can take 16 hours per year in order to participate in volunteering activities! We will love to see some pictures in our slack!
• Up to 30 days of vacation per year (additional days are granted along with seniority at AUCTANE).
• Up to 1000 PLN/ year to match your NGO donations! We are happy to support your initiatives by duplicating the amount donated.
• We have an Employee Assistance Program with psychological assistance free of charge for you and your loved ones.
• Annual Salary Review: We are reviewing the salaries of all our teams annually in order to evaluate an increase according to individual performance and the business results.

Referral Fee We need your support in hiring top-class talent! We offer a referral bonus of 4k-20k PLN, depending on the complexity of the role and the hiring process.

• An inclusive and upbeat work environment Leave your suit behind... we’re a t-shirt and converse kind of place! More importantly, our company culture promotes diversity and inclusion. The personality and opinions of each of our team members are important and valid, and we aim to offer all employees a safe environment where they can be themselves and thrive.
• A cross-cultural atmosphere We are a truly international team of 20 nationalities that speak 10 languages. Our company language is English and all internal communication and company-wide meetings are in English.
• Company events We do our best every day, even at our regular team-building events.
• Nice Office in Wroclaw (free drinks, snacks…)

Do you want to know a little bit more about the team? Please, don’t hesitate to reach out to Amazing Auctane-PL and our Instagram

#li-hybrid

Recruitment process

• Application review
• Interview
• Decision