Software Engineer .NET

Auctane; Madrid; On-site; EUR 34,000 - 50,000; Full time

Benefits offered by this job

Private health insurance

26 days of holiday per year

Annual salary review

Training budget up to €2000/year

Central Madrid office

Job summary

Auctane in Madrid, Spain is seeking a Software Engineer to design, develop, and maintain advanced software solutions. You will lead projects, mentor teammates, and influence technology decisions while delivering cloud-based APIs and microservices.

The role emphasizes system architecture, high-quality code, and collaboration with cross-functional teams, with a base in Madrid and a strong focus on scalable, efficient software delivery.

Qualifications

• Experience designing and developing advanced software systems.
• Proficiency in object-oriented programming concepts, algorithms, and data structures.
• Continuous focus on software architecture, DevOps, and product development.

Responsibilities

• Design system architectures and develop complex software components.
• Deliver cloud-oriented API-based components and microservices.
• Mentor junior team members and influence project direction.

Skills

Object-oriented design

Algorithms & data structures

DevOps practices

Cloud infrastructure automation

English proficiency

Education

University or FP degree in Software Engineering

Tools

AWS

Job description

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 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.

This role is based in Madrid, Spain.

What will you be doing?

• 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.
• Influencing team direction and task prioritization.
• Tackling complex problems requiring deep analysis and evaluation of diverse factors.
• Collaborating closely with other departments, such as production teams, and management, to ensure solution consistency and compliance.
• Engaging in effective cooperation with team members.
• Working collaboratively with internal and external stakeholders.
• Inspiring and facilitating constructive discussions around complex topics.
• Providing timely, concise, and actionable feedback to team colleagues.
• Promoting a knowledge-sharing mindset.
• Participating in recruitment interviews for your team.
• Maintaining openness to communication with both local and external partners.
• Developing mentoring skills, fostering learning, and sharing deep engineering expertise with peers.

What are we looking for?

• 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.
• Strong orientation toward task automation to save time and effort.
• Implementation of improvements and optimizations in daily operations.
• Planning and managing complex multi-system deployments without impacting client operations.
• Ability to balance the demands of delivering high-quality software within tight deadlines.
• Programming across multiple languages.
• Experience with Agile methodologies and DevOps practices.
• Expertise in cloud infrastructure automation.
• Knowledge and experience in use of design patterns
• University or FP degree in Software Engineering
• Proficiency in English is required for this role

What will make you stand out?

• Experience with:
• C# .NET
• TypeScript
• Amazon Web Services

What do we offer?

• Clear and transparent compensation plan. The salary range goes from 34,000 € to 50,000 €. We will discuss the indicated range with you in the first recruiting call to ensure that we are on the same page.
• Flexible salary benefits Save on personal income tax with Cobee for expenses like transport, restaurants, and kindergarten.
• Private health insurance Free for all employees viaCigna, plus we cover50% for your family members.
• Generous time off Enjoy 26 days of holiday per year (23 base days + your birthday off, Christmas Eve, and New Year’s Eve).
• Your gear, your choice Whether you preferMac or Windows, or need an extra screen, we’ll make sure you’re set up for success from day one.
• Annual Salary Review We’re committed to recognizing your professional growth. Every year, we review salaries to reflect your individual development, achievements, and impact on our business success.
• Grow your skills We offer up to€2000/yearin training (certifications, conferences, workshops) to boost your growth—both technical and personal.
• Learning resources Accessinternal and external training, including platforms likeLinkedIn Learning, completely free.
• Holistic wellness program Includes access to Wellhub, Curalinc (psychological support), Rocketlawyer (legal advice), and regular health webinars & challenges.
• Volunteer day Takeone day off a yearto volunteer and give back. Bonus points for sharing pics on Slack!
• Health & wellness support Get up to€55/monthto cover your gym or fitness classes (yoga, boxing, pilates, etc.).
• Weekly language classes Improve or learn a new language (English, Spanish, French, Italian, or German) in small groups with expert instructors—on us!
• Time for health Get8 hours per yearfor personal medical appointments and10 hours per yearto support your family’s medical needs.
• Work-life balance We’re flexible and people-first. We know life happens, and we aim to make work work for you.
• Inclusive, upbeat culture No suits here—just a welcoming, casual, and respectful space wherediversity is celebrated, and you can be your full self.
• A global, multicultural team We’re made up of20+ nationalities, speaking10+ languages. All communication is in English, so everyone’s included.
• Packlink Pro discount Enjoy99% offyour personal shipments using our platform.
• Referral bonuses Know someone amazing? Earn€1K–€3Kwhen you refer candidates we hire—depending on the role.
• Central Madrid office When you want a change of scenery, drop by our office in the heart of Madrid—free snacks and drinks included!
• Team events We work hard and play hard with regular team-building activities and meetups.
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