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. As a Software Engineer, you will be responsible for designing, developing, testing, and supporting enterprise integrations. This role will partner with business stakeholders, architects, developers, and operations teams to build scalable, secure, and reusable APIs and integrations that enable critical business processes across the ShipStation Global ecosystem. Design, develop, test, deploy, and maintain integrations.
Develop integrations utilizing REST APIs, SOAP Web Services, EDI, XML, JSON, flat files, and database technologies.
Collaborate with architects and technical leads to define integration standards, best practices, and reference architectures.
Develop and maintain DataWeave transformations for data mapping and orchestration.
Troubleshoot production integration issues and participate in root cause analysis activities.
Support CI/CD pipelines and automated deployment processes.
Monitor and optimize integration performance, reliability, and scalability.
3+ years of software development experience and 2+ years of experience developing integrations.
~ Experience building RESTful APIs and web services, API design and API lifecycle management.
~ Experience implementing integrations using XML, JSON, XSD, and DataWeave.
~ Experience working with relational databases and SQL.
~ Experience integrating cloud applications.
~ Experience with Git-based source control systems.
~ Experience supporting CI/CD pipelines and automated deployments.




~ Excellent verbal and written communication skills in both Spanish and English.
~ MuleSoft Developer Certification (Mule4).
MuleSoft Integration Architect certification.
Experience with AWS, S3, and SQS or hybrid cloud environments.
Experience with Salesforce, ERP, CRM, TMS, or transportation/logistics systems.
Experience with monitoring tools such as Datadog, Splunk, or similar platforms.
Adaptable salary benefits Save on personal income tax with Cobee for expenses like transport, restaurants, and kindergarten.
Private health insurance Free for all employees via Cigna , plus we cover50%for your family members.
Generous time off Enjoy26days holiday per year(23base days +yourbirthdayoff ,ChristmasEve, and New Year's Eve).
Your gear, your choice Whether you prefer Mac or Windows , or need an extra screen, we’ll make sure you’re set up for success from day one.
Grow your skills We offer up to€2000/yearin training (certifications, challenges, workshops) to boost your growth— both technical and personal.
Learning resources Access internal and external training , including platforms like LinkedIn Learning , completely free.
Holistic wellness program Includes access to Wellhub, Curalinc (psychological support), Rocketlawyer (legal advice), and regular health webinars & challenges.
Volunteer day Take one day off a year to volunteer and give back. Bonus points for sharing pics on Slack!
Weekly language classes Improve or learn a new language (English, Spanish, French, Italian, or German) in small groups with expert instructors—on us!
A global, multicultural team We’re made up of20+ nationalities , speaking10+ languages . 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 !

📌 Software Engineer-JAVA / Java Developer (Permanent) (Madrid)
🏢 Auctane
📍 Madrid