Full-Time

Senior Software Engineer .NET

Posted on 8/21/2026

Auctane

Auctane

1,001-5,000 employees

Global SaaS shipping and fulfillment platform

Compensation Overview

€47k - €68k/yr

+ €2,000 annual training allowance + €55 monthly wellness allowance + €1,000–€3,000 referral bonus

Madrid, Spain

Hybrid

Hybrid role based in Madrid.

Category
Software Engineering (1)
Required Skills
Agile
JavaScript
Data Structures & Algorithms
SQL
Java
RDBMS
TypeScript
.NET
Microservices
C#
AWS
REST APIs
DevOps

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Requirements
  • Experience designing and developing advanced software systems.
  • Proficiency in object-oriented programming concepts, algorithms, and data structures.
  • A continuous focus on improving software architecture design and product development skills.
  • A strong orientation toward task automation.
  • Experience implementing improvements and optimizations in daily operations.
  • Experience planning and managing complex multi-system deployments without impacting client operations.
  • Ability to deliver high-quality software within tight deadlines.
  • Programming experience across multiple languages, including C#, JavaScript, and Java.
  • Experience with Agile methodologies and DevOps practices.
  • Expertise in cloud infrastructure automation.
  • Knowledge and experience using design patterns.
  • Fluency in English.
  • Experience with C# .NET.
  • Experience with relational database management systems and SQL.
  • Experience with Amazon Web Services.
Responsibilities
  • Contribute to system architecture discussions and develop software components aligned with functional and non-functional requirements.
  • Create high-quality, maintainable code according to company best practices and standards.
  • Participate in software testing, debugging, and optimization to ensure performance, scalability, and reliability.
  • Develop and maintain cloud-based application programming interfaces, microservices, and integrations as part of a collaborative engineering team.
  • Support junior engineers through code reviews, pair programming, and technical knowledge sharing.
  • Collaborate with the team to refine task prioritization and align work with project goals.
  • Solve complex problems requiring deep analysis and evaluation of diverse factors.
  • Collaborate with product teams and other departments to ensure solutions meet business and technical requirements.
  • Communicate with team members and external stakeholders to clarify requirements and share progress updates.
  • Participate in technical discussions, advocate for improvements, and help resolve disagreements constructively.
  • Provide timely, concise, and actionable feedback to colleagues.
  • Share knowledge through documentation, workshops, or informal team sessions.
  • Assist in technical interviews to evaluate candidates for the team.
  • Maintain open communication with local and external partners.
  • Proactively learn new tools and practices, including DevOps and cloud services.
Desired Qualifications
  • Experience with TypeScript.
  • Experience with JavaScript.

Auctane is a global provider of e-commerce shipping and mailing software, offering a SaaS platform that connects merchants to multiple brands and carriers for end-to-end fulfillment. Its ecosystem includes ShipStation, ShippingEasy, ShipWorks, Stamps.com/Endicia, ShipEngine, Metapack, Packlink, GlobalPost, and Return Rabbit, covering postage, multi-carrier shipping, API-based shipping, delivery management, and returns. The company differentiates itself by uniting a broad portfolio of brands under one umbrella to support everything from small online shops to large enterprises, with an upcoming ShipStation Global merger to create an AI-enabled global logistics platform. Its goal is to help merchants simplify the shipping and fulfillment process, cut costs, and expand their international reach.

Company Size

1,001-5,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Austin, Texas

Founded

2011

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Simplify Jobs

Simplify's Take

What believers are saying

  • ShipStation Intelligence reported 10-20% lower shipping costs in early pilots on March 24, 2026.
  • Auctane's headcount reached 1,963 in March 2026, while active hiring continued.
  • The merger gives ShipStation Global more than 3 million customers and broader freight reach.

What critics are saying

  • Integration of WWEX and Auctane risks culture clashes and systems disruption through 2026.
  • ShipStation Global's 3 billion annual shipments create a massive outage target for competitors.
  • Thoma Bravo-driven consolidation pressures margins if customers resist custom contracts and platform bundling.

What makes Auctane unique

  • ShipStation Global combines Auctane's software with WWEX's freight network on June 1, 2026.
  • ShipStation Intelligence launched March 24, 2026, using predictive AI across shipment lifecycles.
  • Auctane spans ShipStation, Stamps.com, Metapack, Packlink, ShipEngine, and Endicia globally.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Wellness Program

Mental Health Support

Life Insurance

Unlimited Paid Time Off

Flexible Work Hours

Hybrid Work Options

Paid Vacation

Paid Sick Leave

Paid Holidays

Bereavement Leave

401(k) Company Match

Professional Development Budget

Employee Referral Program

Gym Membership

Company News

ShipStation Global
Jun 2nd, 2026
WWEX Group and Auctane Complete Merger, Creating Leading Logistics Provider ShipStation Global - ShipStation Global

DALLAS and AUSTIN, Texas, June 1, 2026 — WWEX Group, a leading third-party logistics provider of parcel and freight services, and Auctane, a global technology company known for products including ShipStation, Stamps.com, Metapack, and Packlink, today announced the successful completion of their merger. The combined company will operate as ShipStation Global and is backed by...Read more