Full-Stack .NET Lead Engineer for AI-Driven SaaS

Motion Recruitment; Newport Beach, Northern (CA, KY); Hybrid; USD 200,000 - 230,000; Full time

Benefits offered by this job

Full Benefits

Stock Options

401k Match

Bonus incentives

Job summary

Motion Recruitment's Southern California client seeks a hands-on Full-stack Lead / Staff .NET Software Engineer to build and scale a platform for media organizations. You will write production code in C#/.NET and React/TypeScript 60–80% of time, while also shaping architecture and mentoring across teams.

Work on AWS-distributed systems, AI features, and reusable patterns across services. This is not a people-management role but a technical leadership position with opportunities to influence

Qualifications

• Proven track record writing production code in C#/.NET and React/TypeScript.
• 8–12 years of software engineering experience, with 2+ years leading the technical direction of a product area.
• Experience designing distributed systems on AWS with APIs, event-driven services, data stores, caching, CI/CD, and observability.
• Hands-on production AI/ML integration experience (LLM APIs, RAG, vector search, model inference).

Responsibilities

• Build complex C#/.NET services and improve a large React/TypeScript app.
• Lead projects from concept through deployment on AWS.
• Establish reusable patterns for APIs, frontend architecture, data, and cloud services.
• Mentor engineers and guide technical decisions while remaining hands-on.
• Apply generative AI to real product or operational problems.

Skills

C#/.NET

React

TypeScript

AWS

Microservices

AI/ML integration

Technical leadership

Code review

Tools

CI/CD

Terraform

CloudFormation

Docker

Kubernetes

Job description

Motion Recruitment's Southern California client seeks a hands-on Full-stack Lead / Staff .NET Software Engineer to build and scale a platform for media organizations. You will write production code in C#/.NET and React/TypeScript 60–80% of time, while also shaping architecture and mentoring across teams.

Work on AWS-distributed systems, AI features, and reusable patterns across services. This is not a people-management role but a technical leadership position with opportunities to influence