Senior .NET Software Engineer (Barcelona- Hybrid)

BarcelonaFull-TimeSeniorSoftware Engineering

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Responsibilities

  • Develop, test, and maintain backend microservices and APIs using C# and .NET.
  • Implement data access layers and write efficient, optimized T-SQL queries and stored procedures.
  • Write unit, functional, and integration tests to ensure code quality and system reliability.
  • Participate in code reviews and help foster a collaborative, excellence-driven engineering culture.
  • Contribute to the CI/CD pipeline supporting automated builds and deployments.
  • Troubleshoot and resolve production issues, ensuring system stability and performance.
  • Support microservice deployments using Docker, Kubernetes, and cloud-native patterns.

Must-have Skills

  • To be successful in this role, you must have:
  • 5+ years of professional experience in backend development.
  • Excellent working knowledge of .NET Framework with C#, including: Asynchronous programming Queuing, caching, and logging XML/JSON serialization Application security best practices
  • Asynchronous programming
  • Queuing, caching, and logging
  • XML/JSON serialization
  • Application security best practices
  • Strong SQL Server experience with T-SQL, stored procedures, transactions, ACID principles, normalization, and query optimization.
  • Proficiency with data access using Entity Framework, Dapper, and direct SQL queries.
  • Expertise in writing unit, functional, performance, soak, and stress tests. (BDD experience is a plus.)
  • Strong experience designing and consuming RESTful JSON APIs, including authentication and API Gateway patterns.
  • Experience with CI/CD tools such as Git and Jenkins.
  • Experience working in both Linux and Windows environments.
  • Exposure to Docker, Kubernetes, and serverless patterns on AWS.
  • Experience building and deploying microservices at scale.
  • Familiarity with infrastructure-as-code tools such as Terraform or Chef is a plus.
  • Bachelor’s degree in Computer Science, Engineering, or a related field.
  • Strong written and verbal English communication skills.

Excellent working knowledge of .NET Framework with C#, including

  • Asynchronous programming
  • Queuing, caching, and logging
  • XML/JSON serialization
  • Application security best practices
  • Asynchronous programming
  • Queuing, caching, and logging
  • XML/JSON serialization
  • Application security best practices

Nice-to-have Skills

  • ● AI Tooling Proficiency: Leverage one or more AI tools to optimize and augment day-to-day work, including drafting, analysis, research, or process automation. Provide recommendations on effective AI use and identify opportunities to streamline workflows.

What we offer

  • Competitive compensation & total rewards
  • Health benefits & wellness programs
  • Savings & retirement plans
  • Global mobility opportunities
  • Flexible work policy and remote-friendly approach
  • Happy hours, gaming tournaments, sports activities & more
  • Continuous learning & training programs with WizeAcademy
  • Free certifications in cloud technologies and coding languages
  • Find out more about our culture here.

Job Summary

CompanyWIZELINE
LocationBarcelona
TypeFull-Time
LevelSenior
DomainSoftware Engineering