Senior Backend Engineer strengthening and scaling the technical foundations for papernest's Spanish operations. Designing and implementing backend systems for efficient growth and scalability.
About the role
- .NET Developer in Tecsys enhancing multi-component warehouse management systems. Join a growing team supporting global supply chain technology through robust software solutions.
Responsibilities
- Maintain and enhance a complex WMS platform comprising 15+ integrated components.
- Develop mobile and web interfaces used in daily warehouse operations.
- Implement enterprise-grade SSO, authentication, and security features.
- Integrate with automated warehouse equipment and external enterprise systems.
- Optimize high-volume transactional data processing workflows for performance and reliability.
- Manage and improve multi-tenant deployment and configuration architecture.
- Develop backend components using ASP.NET MVC 5, .NET Core, Web API, Entity Framework, and Windows Services.
- Work with SQL Server databases, stored procedures, and schema-management projects.
- Contribute to responsive, intuitive front-end and PWA components using JavaScript, jQuery, Vue, HTML5, CSS3, and Razor Views.
- Collaborate closely with architects, developers, QA, product managers, and support teams to ensure end-to-end stability and functionality.
- Ensure high performance, resilience, and availability of mission-critical warehouse operations
Requirements
- 5–8 years of experience in full-stack development using Microsoft technologies.
- Strong proficiency with **C#, .NET Core, ASP.NET Web API, ASP.NET MVC, Entity Framework, and Windows Services**.
- Hands-on experience with **SQL Server 2016+**, including stored procedures, schema management, and performance tuning.
- Solid knowledge of **JavaScript, jQuery, Vue**, HTML5, CSS3, and Razor Views.
- Experience building or maintaining **distributed, multi-service enterprise systems**.
- Understanding of high-volume transactional processing, performance optimization, and system scalability.
- Strong analytical, troubleshooting, and problem-solving skills.
- Excellent collaboration and communication skills, with the ability to work across teams in an Agile environment.
- Highly motivated self-starter with strong ownership, creativity, and a “can-do” attitude.
- Experience developing Progressive Web Apps or mobile operational interfaces.
- Exposure to enterprise SSO technologies and integration patterns.
- Background working with warehouse automation systems, devices, or industrial integrations.
- Experience with distributed systems, microservices, or event-driven architecture.
- Familiarity with DevOps practices, CI/CD pipelines, or automated deployments.
- Strong SQL performance tuning expertise across large data sets.
- Experience with modern frontend frameworks, particularly **Vue**.
- Knowledge of RDBMS beyond SQL Server, such as Oracle or Postgres.
Job title
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