Senior Software Engineer, .NET

GeneDx•New York City, NY

2d•Remote

About The Position

As a public and profitable company, we have ambitious plans to scale and enhance our products and services. We’re looking for Senior Software Engineers who can design and deliver high-quality solutions, collaborate effectively across teams, and contribute to meaningful improvements in our platform. Senior engineers at GeneDx focus on owning significant components, contributing to architectural discussions, and delivering reliable, well-tested software. As a Senior Software Engineer, you'll work on advancing our technology platform and building software products that make a meaningful impact. You will contribute to medium- to large-scale technical efforts, mentor junior engineers, collaborate with cross-functional partners, and deliver robust, scalable solutions aligned with our business objectives.

Requirements

Proficiency in at least 3 software languages, with a demonstrated ability to quickly learn new ones as needed.
6+ years of software engineering experience, including significant experience in: .NET Framework and .NET (Core/6+), C# SQL Server (schema design, performance tuning, migration strategies) Message queues, ideally MSMQ in production
Demonstrated experience in modernizing legacy applications into cloud‑native microservices and event-driven architectures.
Strong understanding of troubleshooting and maintenance of systems running on a Windows platform
Ability to understand system performance metrics and translate them into actionable improvement tasks
3+ Experience with front-end applications using modern frameworks (React highly desired, but Vue, or Angular are acceptable).
Experience with data modeling using multiple database and storage types.
5+ years experience designing and deploying resilient and scalable large scale and distributed services in the cloud using Docker and Kubernetes (e.g. AWS, GCP, Azure, OCI).
Applied knowledge of multiple architectural paradigms.

Nice To Haves

Prior healthcare / health tech experience, or experience in other regulated industries, particularly with data privacy and compliance requirements.
Prior healthcare / health tech experience, or experience in other regulated industries, particularly with data privacy and compliance requirements

Responsibilities

Dive into unfamiliar code to troubleshoot or add a new feature
Participate in feature development of larger projects
Technically lead smaller projects
Participate in Support tasks, including off-hours and weekend on-call rotations.
Propose technical designs, considering standard patterns, tradeoffs, and maintainability
Provide thorough and meaningful code reviews
Work with legacy as well as novel code bases
Prototype, develop, and debug new features
Implement and maintain DevOps cloud patterns