Senior C# Engineer — End-to-End .NET Features

Cynosure Designs Ltd; Lahore; On-site; PKR 1,000,000 - 1,800,000; Full time

Job summary

Cynosure Designs Ltd is seeking a senior engineer to design and deliver features for a large, long-lived .NET product. You will own features end to end—from design through code, database changes, and production deployment—and take responsibility for performance and quality in live environments.

You will work with senior developers, use AI coding tools to move faster, and ensure changes align with architecture, security, and data boundaries while maintaining stability and delivering on time.

Qualifications

• Substantial senior engineer experience on a shipped .NET product.
• Experience maintaining a large Windows Forms application.
• Ability to read a poor execution plan and optimize with correct indexing.
• Experience designing UI, application code and database for the same feature.
• Experience modernising a .NET app with web screens alongside Windows UI.
• Daily use of AI coding tools with careful review.
• Track record of delivering releases with data fixes and go-live readiness.
• Good security habits: credentials kept out of source/logs, customer data protected.

Responsibilities

• Own features end to end: interaction design, screens, business rules, data model, queries, and the detail users rely on every day.
• Write and change production C#. Keep existing behaviour stable, fit new work to the current architecture, and improve the code you touch.
• Own the database work for your features: design tables and indexes, write safe migration scripts, and tune slow queries and reports so they stay correct under real data volumes.
• Build and maintain operational reports and exports, including grids, formatted documents and spreadsheet output.
• Support background processing and releases across live customer environments.
• Use AI coding tools to move faster. You write the prompts, read every diff, and ship only code you can explain.
• Add AI features only where they earn their place, with clear data boundaries and no customer or personal data in prompts, logs or third-party tools.
• Estimate from the code you have read and sequence work so a usable slice ships early. If a date is at risk, say so early, cut scope, and still deliver what users need.

Skills

C# & .NET

SQL Server

Azure

GitLab

Communication

Problem solving

Security best practices

Tools

Visual Studio

Windows Forms

SQL Server Management Studio

Job description

Cynosure Designs Ltd is seeking a senior engineer to design and deliver features for a large, long-lived .NET product. You will own features end to end—from design through code, database changes, and production deployment—and take responsibility for performance and quality in live environments.

You will work with senior developers, use AI coding tools to move faster, and ensure changes align with architecture, security, and data boundaries while maintaining stability and delivering on time.