Middle Full Stack Engineer – .NET, React

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Avenga

WebsiteLinkedInAll Job Openings

5001 - 10000 employees

💼 Consulting

🏭 Manufacturing

🏥 Healthcare

💰 Private equity on 2017-02

Consulting • Manufacturing • Healthcare

Avenga is an international technology and software engineering company that combines consulting, product development, and digital transformation services to help enterprises solve complex business and societal challenges. With over 6,000 professionals across multiple countries and decades of experience, Avenga delivers custom software, cloud, and integration solutions while supporting clients across industries and providing talent acquisition and career development services internally.

📋 Description

• Develop and maintain features across the existing ASP.NET Web Forms/MVC platform using C#, .NET, and SQL Server • Optimize queries and data access • Support and extend FIX protocol integrations • Troubleshoot production issues in a critical financial environment • Contribute to a greenfield platform using TypeScript, React/Next.js, REST APIs, .NET microservices, and AKS • Participate in architectural decisions and apply CQRS and event sourcing patterns where appropriate • Use AI-assisted development tools while maintaining code quality, testing, security, and maintainability • Improve observability and documentation through logging, metrics, tracing, runbooks, and technical specifications • Collaborate with technical and non-technical stakeholders

🎯 Requirements

• 4+ years of professional software development experience • Strong proficiency in C# and .NET • Hands-on knowledge of ASP.NET Web Forms and/or MVC, including legacy codebases • Good command of TypeScript and React • Solid knowledge of SQL Server, including query writing, optimization, indexing, and data access patterns • Strong written and verbal communication skills, including explaining technical concepts to non-technical stakeholders • Practical knowledge of AI-assisted development tools such as GitHub Copilot, Cursor, or Claude • Growth mindset and willingness to work on existing systems and greenfield solutions • Ability to write clean, maintainable, testable, and well-documented code • Security-conscious approach to software development • Upper-Intermediate level of English • Knowledge of the FIX protocol, particularly trading system integrations, order routing, or institutional messaging • Understanding of event sourcing and CQRS patterns • Familiarity with Kubernetes or AKS and containerized workloads