Full Stack Engineer

The client is an early-stage, venture-backed technology company building AI-first products used by thousands of customers. The Full Stack Engineer will design, develop, and deploy applications across the stack, build backend services and APIs, integrate LLMs into production systems, and own features through deployment and monitoring.

Responsibilities

Design, develop, and deploy full-stack applications from concept to production

Build scalable backend services and APIs that power AI-driven experiences

Integrate and optimize Large Language Models (LLMs) within production systems

Develop responsive web and mobile applications

Collaborate directly with product and engineering leadership on architecture and technical strategy

Own features throughout the full software development lifecycle, including deployment and production monitoring

Benefits

Equity

Comprehensive health benefits

401(k)

Flexible PTO

Paid parental leave

Commuter benefits

Opportunity to help shape the technical direction of a high-growth startup

Company

Staffing and recruiting firm connecting talent with organizations

New York, New York, USA

http://www.greenkeyllc.com/

Founded in 2004

201-500 employees

Qualifications

Experience building and scaling modern full-stack applications

Strong proficiency with JavaScript/TypeScript and at least one backend language such as C# or PHP

Experience working with AWS and relational databases

Interest in AI technologies and bringing LLM-powered features into production

Comfortable working in a fast-moving startup environment with significant ownership

Strong communication skills and a collaborative mindset

Required skills

Full-Stack Development, JavaScript, TypeScript, C#, PHP, React, AWS, PostgreSQL, MySQL, LLM Integration

Experience

Mid level