Senior Dot Net and Fullstack Developer

Role & responsibilities

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• Design, develop, enhance, and maintain enterprise applications using ASP.NET 4.x, C#, .NET Framework, JavaScript, WCF, and ASMX Web Services.
• Own end-to-end delivery and support of production-critical integration solutions and business applications.
• Build and support integrations using REST APIs, SOAP services, XML/XSD, JSON, EDI, SFTP, and Message Queue technologies.
• Develop, optimize, and troubleshoot SQL Server databases, including T-SQL queries, stored procedures, indexing strategies, and execution plan analysis.
• Investigate and resolve application performance issues through profiling, memory analysis, thread analysis, and APM tools.
• Monitor application health using logging, metrics, tracing, alerting, and observability frameworks to ensure system reliability and performance.
• Perform root cause analysis for production incidents and implement preventive measures to improve system stability.
• Collaborate with business stakeholders, product owners, and end users to understand requirements and translate them into scalable technical solutions.
• Communicate technical options, risks, and recommendations in clear, business-friendly language.
• Leverage AI-assisted development tools such as GitHub Copilot, Cursor, and Claude Code for coding, testing, debugging, code reviews, and documentation while ensuring accuracy through proper validation.
• Conduct code reviews and enforce development best practices, coding standards, and security guidelines.
• Create and maintain technical documentation, integration specifications, support guides, and architecture documents.
• Mentor junior developers and provide technical leadership during design, development, and troubleshooting activities.
• Participate in deployment planning, release management, and post-production support activities.
• Work closely with QA teams to ensure comprehensive testing, defect resolution, and successful project delivery.

Preferred candidate profile

Must-have skills • 812 years of software development, including senior ownership of production systems. • Strong ASP.NET (4.x) and C# on the .NET Framework: web services (ASMX/WCF), Windows services and JavaScript. • Integration formats and protocols: REST, SOAP, XML/XSD, JSON, EDI, SFTP and message queues. • SQL Server: T-SQL, stored procedures, indexing, execution plans, locking and blocking. • Finding and fixing performance problems with profilers, APM tools, thread and memory analysis. • Proficient in AI-assisted development (e.g. Claude Code, GitHub Copilot, Cursor) for coding, reviews, testing, debugging and documentation, with judgement on verifying AI output. Mandatory. • Monitoring and observability for integrations: logging, metrics, tracing, alerting. • Turning user problems into clear technical options, explained in plain language.