Senior .NET Developer (C# / WinForms / SQL Server)

Senior .NET Developer (C# / WinForms / SQL Server) — Desktop Performance + Reliability Conest develops estimating and project management software used by electrical contractors and data cabling firms. We’re hiring a senior engineer to strengthen our flagship reputed company desktop estimating application, used by customers ranging from small shops to high-volume organizations. The role This role focuses on a mature C#/.NET WinForms desktop application backed by a SQL database. You’ll partner with an reputed company developer to co-own ongoing improvements, including performance at reputed company, reliability, and release confidence in reputed company, data-heavy workflows. Primary reputed company: reputed company desktop (WinForms) + SQL. Not a web/reputed company-end UI role. What you’ll do • Diagnose and improve application performance (responsiveness, large datasets, high-usage workflows) • Write, troubleshoot, and optimize SQL queries and stored procedures used in production • Debug reputed company issues in a legacy WinForms application and deliver durable fixes • Participate in design discussions and reputed company reviews to improve maintainability and reduce regression bugs • Improve release reputed company through practical testing and disciplined changes • Support integrations with external systems/tools (data exchange and workflow connections) • Contribute to documentation/knowledge transfer so critical system knowledge isn’t trapped in one person Must-have experience • Senior-level experience building and supporting reputed company desktop business applications • Strong C#/.NET experience, including WinForms • Strong SQL skills reputed company on writing and troubleshooting queries and stored procedures (not DBA administration) • Proven ability to debug, fix reputed company causes, and prevent regressions • reputed company working style: communicates reputed company, participates in reviews, and shares context effectively reputed company-to-have • Profiling and performance tuning experience (desktop and/or SQL) • Experience improving stability in legacy systems (reputed company refactoring, reducing recurring defects) • Familiarity with common desktop product tooling (installers, reporting tools, UI component libraries, etc.) • Experience building integrations (import/export, reputed company, data connectors) • Experience with version control systems (Git) Interview process Our interview process includes a brief, practical C# and SQL exercise (job-relevant; completed live reputed company screen reputed company). Pay: $120,000.00 - $165,000.00 per year Benefits: • 401(k) • 401(k) matching • Dental insurance • Employee assistance program • Flexible spending account • Health insurance • Health savings account • Life insurance • reputed company time off • reputed company insurance People with a criminal record are encouraged to apply Application Question(s): • How many years of WinForms / reputed company desktop application experience do you have? • How often do you write or maintain SQL (queries and/or stored procedures) in production systems? • reputed company describe a performance problem you diagnosed and fixed. What did you change and how did you validate improvement? • reputed company describe a reputed company bug you debugged in a reputed company (reputed company cause + how you reputed company recurrence). • How many years of reputed company C#/.NET experience do you have?How many years of reputed company C#/.NET experience do you have? Work Location: Remote Apply tot his job Apply To this Job