We make it possible for businesses to meet the ever-changing requirements of their industry and customer expectations. We make it possible for businesses to meet the ever-changing requirements of their industry and customer expectations. The Auctane family of mailing and shipping software products includes ShipStation, Stamps.Our partners include Amazon, UPS, USPS, eBay, BigCommerce, Shopify, WooCommerce, and Walmart.
About The Role As a Software Engineer, you will play a key role in designing, developing, and maintaining advanced software solutions. You will be responsible for leading projects, participating in strategic technology decision-making, and mentoring less experienced team members. Your expertise in programming and software engineering will be essential for achieving project goals and ensuring the delivery of high-quality products.
Designing system architectures and developing complex software components while considering both functional and non-functional requirements.
Creating high-quality software code in accordance with industry best practices and standards.
Managing software testing processes, identifying and resolving issues, and optimizing system performance and scalability.
Delivering cloud-oriented API-based components and microservices adhering to the highest engineering standards.
Mentoring junior team members by providing technical support, guidance, and sharing knowledge and experience to facilitate their professional growth.
Tackling complex problems requiring deep analysis and evaluation of diverse factors.
Maintaining openness to communication with both local and external partners.
Experience in designing and developing advanced software systems.
Proficiency in object-oriented programming concepts, algorithms, and data structures.




Continuous focus on enhancing skills in software architecture design, DevOps practices, and product development.
Planning and managing complex multi-system deployments without impacting client operations.
Ability to balance the demands of delivering high-quality software within tight deadlines.
Experience with Agile methodologies and DevOps practices.
Expertise in cloud infrastructure automation.
University or FP degree in Software Engineering
Proficiency in English is required for this role
C# .NET
TypeScript
JavaScript / React (or any other JS framework)
Amazon Web Services
Save on personal income tax with Cobee for expenses like transport, restaurants, and kindergarten.
Private health insurance. Enjoy 26 days of holiday per year (23 base days + your birthday off, Christmas Eve, and New Year’s Eve).
Whether you prefer Mac or Windows, or need an extra screen, we’ll make sure you’re set up for success from day one.
We offer up to €2000/year in training (certifications, conferences, workshops) to boost your growth—both technical and personal.
Access internal and external training, including platforms like LinkedIn Learning, completely free.
Includes access to Wellhub, Curalinc (psychological support), Rocketlawyer (legal advice), and regular health webinars & challenges.
Take one day off a year to volunteer and give back. Bonus points for sharing pics on Slack!
Improve or learn a new language (English, Spanish, French, Italian, or German) in small groups with expert instructors—on us!
A integral, multicultural team. All communication is in English, so everyone’s included.
Central Madrid office. When you want a change of scenery, drop by our office in the heart of Madrid—free snacks and drinks included!

📌 Junior Software Engineer (.NET) (Madrid)
🏢 Auctane
📍 Madrid