Senior Software Engineer (.NET)

Position Overview

The Senior Software Engineer (.NET) is a technical leader responsible for designing, building, and optimizing modern, cloud‑ready applications using the latest Microsoft .NET technologies. This role focuses on scalable architectures, high‑quality code, DevOps‑driven delivery, and best‑in‑class engineering practices. The Senior Engineer collaborates closely with Product, QA, DevOps, and Delivery teams to deliver robust solutions, influence architectural direction, mentor engineers, and champion continuous improvement across the full development lifecycle.

Key Responsibilities

Modern Application Architecture & Development

• Architect, develop, and maintain applications using .NET 6+ , C#, ASP.NET Core, and modern frameworks.
• Build and enhance RESTful APIs , microservices, messaging components, and background workers.
• Lead modernization efforts by refactoring or migrating legacy VB.NET and older .NET Framework applications to modern .NET.
• Apply engineering best practices including SOLID principles, domain‑driven design (DDD), dependency injection, asynchronous programming, and clean architecture patterns.
• Write secure, testable, performant code and drive engineering excellence across the team.

Technical Leadership

• Lead complex development initiatives with autonomy and technical ownership.
• Guide the team on system architecture, code quality, performance optimization, and maintainability.
• Conduct in‑depth code reviews and mentor developers to elevate technical capabilities.
• Anticipate technical risks and provide mitigation strategies during planning and design phases.

Cross‑Functional Collaboration

• Partner with Product Managers to clarify requirements, roadmap impacts, and technical feasibility.
• Collaborate with QA to enhance automated testing, shift‑left quality practices, and overall reliability.
• Work with DevOps to optimize CI/CD pipelines , deployment workflows, infrastructure-as-code, and cloud readiness.
• Support Delivery Management by identifying risks, dependencies, and technical constraints early.

Database & Integration Engineering

• Design, implement, and optimize relational database structures using SQL Server, with a strong focus on stored procedures, views, indexing strategies, and query performance.
• Develop high‑performance T‑SQL code , including complex stored procedures, functions, triggers, and optimized queries for large datasets.
• Perform database performance tuning , index analysis, query plan evaluation, and workload optimization to ensure scalability and reliability.
• Integrate applications with internal and external systems using REST APIs, event streams, message queues, file‑based exchanges, or service bus technologies .
• Collaborate with DBAs and architects on capacity planning, schema design, data governance, and best practices for secure data access .

Performance, Observability & Security

• Perform performance profiling, memory optimization, and load testing.
• Implement secure coding practices aligned with OWASP guidance and least‑privilege standards.
• Build resilient, observable systems with structured logging (Serilog/ELK), metrics, distributed tracing, and robust error handling.

Mentorship & Continuous Improvement

• Mentor junior and intermediate developers through pairing, coaching, and knowledge-sharing.
• Influence and contribute to internal frameworks, shared libraries, and engineering standards.
• Advocate for continuous improvement in development flow, automation, tooling, and DevOps maturity.
• Help foster a learning culture through documentation, workshops, and code craftsmanship.

Skills & Qualifications

Required

• 5+ years of professional experience developing applications with the modern .NET ecosystem .
• Strong expertise in C# and hands‑on experience with modern .NET (6+) , ASP.NET Core, Web API, LINQ, and object-oriented design.
• Experience maintaining or migrating legacy VB.NET or .NET Framework applications.
• Hands-on experience building and consuming REST APIs and working in microservices, modular, or distributed architectures.
• Strong SQL Server knowledge, including data modeling, query optimization, and performance tuning.
• Proficiency with Git, CI/CD pipelines (Azure DevOps/GitHub Actions), and automated deployment workflows.
• Experience working in Agile (Scrum/Kanban) environments.

Preferred

• Experie…