Sr. C# Full Stack Developer

Our Client, a leading Asset Management firm located in Midtown, Manhattan seeking a Full Time Sr. C# .net full stack Developer to support their Private Wealth Technology Group. This is a hybrid role (3 days onsite). This individual would be responsible for designing, building, and operating scalable, high-performance applications and integrations across multiple wealth-management data domains. This role requires strong engineering fundamentals, deep SQL/data skills, and the ability to work autonomously, driving delivery from requirements through production release and ongoing support.
RESPONSIBILITIES

• Design, build, and maintain internal applications and integrations with third-party platforms across the Microsoft technology stack.
• Partner with Business and Operations stakeholders to gather requirements, document them clearly, and produce technical designs/specifications.
• Write clean, maintainable, well-tested code; contribute to team standards through code reviews, patterns, and documentation.
• Deliver end-to-end through the SDLC: design, development, testing coordination, release/deployment, and post-release validation.
• Diagnose and resolve escalated production issues; improve reliability via monitoring, performance tuning, and root-cause remediation.
• Contribute to platform modernization initiatives (e.g., upgrades, migrations, infrastructure improvements).
• Manage multiple workstreams (new features, integrations, maintenance) by prioritizing effectively and communicating trade-offs.
• Collaborate with engineers across the organization; participate in technical discussions to drive the best solution.
• Proactively identify and drive improvements in performance, scalability, resiliency, and developer productivity.
• Mentor junior developers through pairing, reviews, and technical guidance.

QUALIFICATIONS

• Experience in financial services; familiarity with Private Wealth/wealth management data domains strongly preferred.
• Strong backend expertise in C#/.NET, including building and operating production services.
• Advanced SQL and data skills: data modeling, analysis, and building/optimizing complex queries; experience with ETL/ELT concepts and tooling.
• Strong experience with Microsoft SQL Server and Snowflake, including query design and performance optimization.
• Full-stack web development experience with HTML, CSS, and JavaScript (jQuery where applicable).
• Hands-on integration experience with REST and/or SOAP services; comfortable working with JSON/XML.
• Experience with Azure DevOps, Git, and CI/CD pipelines.
• Ability to operate independently with minimal supervision: can take ambiguous problems, propose solutions, and drive them to completion.
• Strong communication skills: able to explain technical concepts and trade-offs to technical and non-technical audiences.
• Experience working in an Agile/Scrum environment.
• Experience using AI-assisted development tools (e.g., GitHub Copilot or similar) responsibly to accelerate delivery while maintaining quality.
• High ownership and accountability for delivery quality and production outcomes.
• Experience deploying and operating distributed systems on Kubernetes, OpenShift, and/or Azure.
• Familiarity with Domain-Driven Design (DDD) and event-driven or service-oriented architecture patterns.
• Familiarity with Excel macros and VBA.