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Steven Lee

@stevenlee5

Senior Backend Software Engineer at Deloitte building enterprise platforms and production AI-assisted workflows.

United States
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At Deloitte, I own delivery of a multi-tenant enterprise operations portal, translating business requirements into reusable services and reducing average feature delivery time by 28%. I also built secure authentication and role-based workflows supporting six permission levels.

I’ve improved the portal’s performance and reliability with PostgreSQL, Redis, AWS, and observability tooling. Since 2023, I’ve added production OpenAI API and LLM workflows with semantic retrieval and evaluation pipelines, reducing manual document-review effort by 46% while keeping human approval for sensitive outputs.

Before Deloitte, I developed integration APIs, backend services, and cybersecurity awareness dashboards at Living Security, and built enterprise applications at IBM. I work with product and design on roadmap planning, review architecture and code, and mentor engineers.

Experience

Work history, roles, and key accomplishments

DE
Current

Senior Full Stack AI Engineer

Jun 2022 - Present (4 years 5 months)

Owned delivery of a multi-tenant enterprise operations portal from concept to release using TypeScript, React, Python, and FastAPI, reducing feature delivery time by 28%. Built secure authentication and role-based workflows with Python, FastAPI, JWT, OAuth 2.0, and AWS, and implemented AI-assisted workflows with OpenAI API and LLM APIs.

Upwork Inc logoUI

Software Engineering Intern

May 2014 - Aug 2014 (3 months)

Assisted engineers with HTML, CSS, JavaScript, and jQuery interface tickets, resolving 18 small UI defects. Supported REST and JSON API tickets with SQL checks and used Git for small production fixes.

Education

Degrees, certifications, and relevant coursework

Texas Tech University logoTU

Texas Tech University

Bachelor of Science, Computer Science

2011 - 2015

Bachelor of Science in Computer Science from Texas Tech University, completed in 2015.

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