Principal Software Engineer

Kapsch TrafficCom América Latina; Donostia/San Sebastián; Presencial; EUR 60.000 - 90.000; Jornada completa

Descripción de la vacante

Join a leading tech company as a Principal Software Engineer in Donostia/San Sebastián, Spain. You'll shape engineering practices, mentor teams, and work with advanced technologies including .NET 7 and cloud platforms like Azure and AWS. This high-impact role offers international exposure and the opportunity to influence architecture and drive innovation.

Formación

• 10+ years of experience in front-end and back-end development.
• Deep expertise in .NET 7 and Angular or Blazor.
• Prior experience as Principal Software Engineer/Developer.

Responsabilidades

• Collaborate to enhance system architecture and design.
• Develop and test software applications.
• Mentor and support developers through code reviews.

Conocimientos

Test-Driven Development (TDD)

Application and system security

Scalability and performance optimization

Collaboration and project management

Herramientas

Docker

Kubernetes

Git

Jira

Confluence

Descripción del empleo

to shape the future of our tech platforms on a global scale. From cloud-first architecture to mentoring engineering talent, your impact will be felt across borders. Bring your vision — we’re ready to build it together.

This is a

high-impact, high-visibility international role, where you will influence architecture, elevate engineering standards, and mentor teams across the organization. You’ll work with cutting-edge technologies and help us build scalable, secure, and performant solutions that power critical business processes.

If you are passionate about designing best-in-class software systems, driving innovation, and coaching others, we’d love to hear from you.

What You’ll Do

As our Principal Software Engineer, you will:

• Collaborate to enhance system architecture and design, keeping in mind the specific context and requirements where the system will be deployed.
• Adhere to and continuously improve software development guidelines to ensure quality and consistency.
• Develop and test software applications, simulating real-world scenarios as closely as possible.
• Write clean, efficient code and produce detailed technical specifications.
• Suggest and implement system improvements, balancing technical excellence with cost-effectiveness.
• Mentor and support developers, helping them grow through code reviews, coaching, and knowledge sharing.

What You Bring

We are looking for a well-rounded Principal Software Engineer with the following experience:

• Core Technical Expertise: 10+ years of experience in front-end and back-end development, with deep expertise in NET 7 and Angular or Blazor.
• Prior experience in a Principal Software Engineer / Principal Software Developer role.
• Background in systems such as CRMs, Payment Processing, Business Process Improvement, and high-performance transaction systems.
• Strong experience with Test-Driven Development (TDD) and automated testing: Unit Testing (MSTest, NUnit), UI & Performance Testing (Selenium, Nbomber).

Cloud & Infrastructure

• Hands-on experience with Azure, AWS, Google Cloud.
• Solid knowledge of cloud deployment: ECS, cloud storage & networking (AWS EBS, EFS, S3; Azure Accelerated Networking).
• Experience with containerization: Docker, Kubernetes.

Architecture & Development Practices

• Proficiency in scripting: Powershell, Bash.
• Familiarity with mobile development.
• Strong understanding of scalability and performance optimization.

Tools & Collaboration

• Experience with collaboration and project management tools: Jira, Confluence, Trello.
• Proficient with version control systems: Git.

Data & Reporting

• Database experience: MSSQL, Oracle, PostgreSQL.
• ORM tools: NHibernate, Entity Framework.
• Expertise in reporting tools: Jasper Reports.
• Familiarity with Elasticsearch and SonarQ for code quality and search.
• Power BI / Data Lake for data visualization and analysis.
• Grafana for monitoring and performance visualization.

Security & Communication

• Expertise in application and system security.
• Advanced level of English essential for effective collaboration in a global team environment.

Why Join Us?

• First Principal-Level Role: You’ll be the first to shape this role and drive technical leadership across the organization.
• International Exposure: Collaborate with diverse teams across countries and cultures.
• Influence and Impact: Help define best practices, mentor future leaders, and contribute to strategic technical decisions.
• Continuous Learning: Work with modern technologies and contribute to an environment that values innovation and growth.