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 Fullstack Developer, you will play a key role in the design, development, and maintenance of our web applications using ReactJS and .NET. You will be responsible for driving technical decisions, mentoring team members, and ensuring the architectural integrity of our solutions. This role requires deep technical expertise, strong problem-solving skills, and the ability to work across teams to deliver high-impact solutions.

This role is ideal for someone who thrives in a fast-paced environment, enjoys mentoring others, and takes initiative in driving technical excellence.

Salary range for this role: 15,500- 21,000 PLN gross/ month

This role is based in Wroclaw.

What will you be doing?

Design, develop, and maintain scalable web applications using React and .NET.
Lead technical discussions and contribute to architectural decisions.
Optimize web applications for performance, scalability, and security.
Mentor and support junior developers, fostering a culture of learning and growth.
Collaborate with cross-functional teams, including Product, UX/UI, and DevOps, to drive innovation and best practices.
Conduct and oversee code reviews, ensuring adherence to best practices and high-quality standards.
Troubleshoot and resolve complex issues across the full stack.
Stay updated with industry trends and proactively introduce improvements.

What are we looking for?

5+ years of experience in web application development with React and .NET (in total).
Deep understanding of JavaScript (ES6+), TypeScript, and modern front-end frameworks.
Strong expertise in designing and integrating RESTful APIs.
Proven experience in architectural decision-making and system design.
Experience with source control systems and branching strategies (e.g., Git).
Proficiency in testing frameworks such as Jest, React Testing Library, or Playwright.
Strong ability to communicate complex technical concepts to both technical and non-technical stakeholders.
Self-driven with a proactive approach to problem-solving.

What will make you stand out?

Bachelor's degree in Computer Science or a related field.
Experience with AWS services and cloud architecture.
Knowledge of modern build tools and deployment strategies.
Familiarity with DevOps practices and CI/CD pipelines.

Tech Stack

React, JavaScript (ES6+), TypeScript
C# .Net
Amazon Web Services
SQL Server

What do we offer?

🗓️ 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.
📦 99% discount on your personal shipment orders via Packlink.pro
💙 Up to 500PLN/year to match your NGO donations! We are happy to support your initiatives by duplicating the amount donated.
😊 Volunteer day. You can take 1 day off per year in order to participate in volunteering activities! We will love to see some pictures in our slack!
Referral Fee 🔗 We need your support in hiring top-class talent! We offer a referral bonus of 4-20k, depending on the complexity of the role and the hiring process.
👩‍⚕️We have an Employee Assistance Program with psychological assistance free of charge.
⚖️ Great work-life balance We offer a flexible work schedule and will do our best to adapt to your personal situation. Working in a fast-paced environment can be intense, but that doesn’t mean you shouldn’t enjoy your free time!
💜 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 Work hard, play hard! We do our best every day, even at our regular team-building events.
📺 Internal and external training, free access to online training platforms such as Linkedin Learning
🏠 Possibility to work in a home-office using equipment provided by AUCTANE, or in our office prepared in accordance with all safety requirements.
📙 Personal Training Budget. Up to 7000 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.
🌅 Up to 30 days of vacation per year (additional days are granted along with seniority at AUCTANE).
🗺️ 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.
🏥 Free private medical insurance.
📄 Attractive life insurance.
🏐 Co-financing for sports and recreational activities
🏐 Gym membership co-financing
🏢 Nice Office in Zielona Gora and 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

Senior Software Engineer - .NET (Hybrid remote)

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