Senior .NET Backend (Spanish speaking)

Nix

Poland (Europe) Remote permanent

Posted: January 27, 2026

Required Skills

Job Description

About Our Customer:

Our customer is a leading company in auto claim management. Their flagship product is a world-class solution for auto repair estimation, deployed in 28 countries. They are on a mission to transform how the automotive industry manages claims through innovation, automation, and high-quality software.

About the profile:

We are looking for a Senior .NET Backend Engineer to join our agile development team. In this role, you will contribute to the design, development, and optimization of software products aligned with system architecture and business requirements. You will be part of a self-organized Scrum team, building scalable, cloud-based microservices that drive our customer’s solutions forward.

Key Responsibilities

• Actively participate in all Scrum ceremonies (Daily Stand-ups, Sprint Planning, Reviews, Retrospectives).

• Collaborate with product owners and business analysts to analyze user stories and propose both functional and technical solutions.

• Design, implement, and maintain scalable microservices on Azure with Kubernetes.

• Develop high-quality, testable back-end applications with .NET Core.

• Ensure code quality and maintainability through unit testing (Moq, xUnit/NUnit), code reviews, and adherence to best practices.

• Contribute to the evolution of system architecture, applying Hexagonal Architecture, Clean Code principles, and modern design patterns.

• Collaborate in a cross-functional, international environment, sharing knowledge and mentoring junior engineers.

Requirements

• Bachelor’s or Technical Degree in Computer Science, Software Engineering, or related field (or equivalent practical experience).

• 5+ years of professional experience as a backend engineer.

• Strong knowledge of C# (OOP, inheritance, polymorphism, async programming).

• Experience with .NET Core, ASP.NET Web API, RESTful services.

• Hands-on experience with Azure microservices and Kubernetes.

• Strong experience with ADO.NET.

• Knowledge of Hexagonal Architecture and MediatR.

• Solid background in unit testing with mocking frameworks (Moq).

• Experience working in Agile/Scrum teams.

• Proficiency in English and Spanish(both written and spoken).

Nice to Have

• Experience with front-end technologies: Angular, HTML5, SCSS.

• Familiarity with Azure Data Factory.

• Experience with LINQ and Automapper

• Experience with continuous integration/continuous delivery (CI/CD) pipelines.

• Knowledge of Domain-Driven Design (DDD) and Clean Architecture.

• Previous exposure to automotive or insurance domain projects.

We offer*:

• Flexible working format - remote, office-based or flexible

• A competitive salary and good compensation package

• Personalized career growth

• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

• Active tech communities with regular knowledge sharing

• Education reimbursement

• Memorable anniversary presents

• Corporate events and team buildings

• Other location-specific benefits

*not applicable for freelancers

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