Lead .NET Full Stack Engineer with React

We are looking for a Lead .NET FullStack Engineer with React (Azure) to join our team!

Our client is a precision mental health company on a mission to make high-quality, evidence-based digital mental health support accessible at scale. Their platform transforms deep clinical expertise into trusted, personalized, and measurable digital experiences that help people improve their mental well-being. Working with digital health partner companies across the US, they combine AI, rigorous clinical science, and human-centered design to deliver meaningful real-world outcomes.

Project technical stack:

• Backend: .NET/C#, REST APIs, Auth0, third-party integrations
• Frontend: TypeScript, React, react-query, react-hook-form, tailwind, lottie (animation), jest, testing-libraty/react
• Cloud: Azure
• Data & Storage: Azure SQL, Cosmos DB, Blob Storage, Azure Storage
• DevOps, Infrastructure & CI/CD: GitHub, Azure Pipelines, Docker, Kubernetes, Terraform, Grafana

Responsibilities:

• Design, develop, test, document, and maintain solutions across backend and frontend
• Deliver new features end-to-end with strong ownership and accountability, while maintaining and improving existing solutions
• Build secure, scalable, reliable, high-quality, and high-performance applications
• Work effectively in a cross-functional team, collaborating closely with Product, QA, DevOps, Data, AI, and Engineering stakeholders
• Communicate confidently in a multinational environment with business, engineering, marketing, and clinical stakeholders when needed
• Actively apply AI-assisted approaches across solution design, coding, testing, debugging, and delivery workflows
• Participate fully in Agile/Scrum ceremonies
• Troubleshoot complex issues, perform root-cause analysis, and investigate new tools and approaches
• Contribute to technical decisions, architecture discussions, and engineering best practices
• Identify delivery bottlenecks, technical risks, and improvement opportunities proactively
• Help balance delivery speed, quality, scalability, maintainability, and technical debt across initiatives

Requirements:

• 7+ years of professional software engineering experience
• Strong commercial experience with .NET/C#
• Strong commercial experience with React/TypeScript
• Proven full-stack delivery experience across frontend and backend systems
• Experience leading technical initiatives and driving engineering decisions
• Ability to lead technical discussions and align engineers and stakeholders around solutions and priorities
• Strong experience building and consuming REST APIs
• Solid production experience with Microsoft Azure
• Solid understanding of SOLID principles, design patterns, and microservices architecture
• Strong understanding of version control, security best practices, and Agile methodologies
• Strong Agile delivery experience with a focus on speed and quality
• Startup mindset: adaptable, fast-moving, pragmatic
• Result-oriented mindset with ownership mentality
• Excellent communication and collaboration skills, able to lead conversations and drive alignment
• Able to work independently and as part of a team
• Proactive, responsive, and dependable with a strong ownership mindset
• Strong technical leadership, ownership mindset, and solution-oriented approach
• Experience supporting, mentoring, or guiding engineers in Agile teams

Nice to have

• Experience in healthcare, mental health, or other regulated industries
• Experience building AI-powered product features
• Practical experience using Anthropic Claude Code to improve SDLC
• Testing and test automation experience
• Python experience
• Data engineering experience
• Strong DevOps & CI/CD practices