# Steven Lee

Steven Lee is a remote worker on Himalayas, Senior Full Stack AI Engineer at Deloitte, based in United States.

Source: https://himalayas.app/@stevenlee5

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

| Detail | Value |
| --- | --- |
| Availability | Open to opportunities |
| Location | United States |
| Authorized to work in | United States |
| Job categories | Backend Engineer, Full Stack Engineer, AI Engineer |
| Skills | Backend Development, Distributed Systems, Event Driven Architecture, Microservices, API Development, System Design, Database Design, Reliability Engineering, Performance Optimization, OpenAI API, LLM APIs, RAG, Semantic Search, Embeddings, Model Evaluation |
| LinkedIn | https://linkedin.com/in/steven-lee-539552148 |

## About

```text
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

### Senior Full Stack AI Engineer (current)

[Deloitte](https://himalayas.app/companies/deloitte-ireland). Jun 2022 - Present

```text
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.
```

Skills: TypeScript, React, JavaScript, Python, fastAPI, JWT, OAuth, AWS, PostgreSQL, SQLAlchemy, Celery, Amazon-SQS, Redis, OpenTelemetry, Prometheus, Grafana, Docker, GitHub-Actions, Pytest, Playwright, OpenAI-API, LLM-APIs, Embeddings, Semantic-Retrieval, Evaluation-Pipelines

### Senior Software Engineer

Living Security. Jul 2018 - May 2022

```text
Developed integration APIs and asynchronous backend services using Node.js, Python, Django, and PostgreSQL, supporting 60+ enterprise integrations. Introduced FastAPI for high-throughput endpoints and owned full-stack development for cybersecurity awareness dashboards.
```

Skills: NodeJS, Python, Django, REST-APIs, PostgreSQL, fastAPI, Redis, Docker, AWS, React, JavaScript, Vue.Js, HTML5, CSS, CI-CD, Git

### Software Engineer

[IBM](https://himalayas.app/companies/ibm-com). Jul 2015 - Jun 2018

```text
Built enterprise web applications with C#, .NET, ASP.NET, JavaScript, and SQL Server, delivering 12 production modules. Implemented authentication, data validation, and reporting queries, and modernized browser interfaces using AngularJS and Angular.
```

Skills: C#, .NET, ASP.NET, JavaScript, SQL-Server, SQL, REST-APIs, Git, React, AngularJS, Angular, IIS, AWS

### Software Engineering Intern

[Upwork Inc](https://himalayas.app/companies/upwork). May 2014 - Aug 2014

```text
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.
```

Skills: HTML, CSS, JavaScript, jQuery, REST-APIs, JSON, SQL, Git

## Education

### Texas Tech University

Bachelor of Science, Computer Science. 2011 - 2015

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

## Tech stack

- OpenAPI
- Kubernetes
- Helm
- Jenkins
- GitHub Actions
- GitLab CI
- MySQL
- PostgreSQL
- MongoDB
- Memcached
- Sentry
- Node.js
- Django
- Spring Boot
- Next.js
- NestJS
- .NET
- ASP.NET Core
- Tailwind CSS
- Okta
- Redis
- Terraform
- Storybook
- Jest
- Cypress
- React
- Vue.js
- jQuery
- AngularJS
- JavaScript
- Python
- HTML5
- Java
- PHP
- C#
- Ruby
- Kotlin
- ASP.NET
- JSON
- Go
- Kafka
- RabbitMQ
- Celery
- BullMQ
- Flask
- FastAPI
- TypeORM
- Fastify
- Grafana
- Prometheus
- OpenTelemetry
- Sequelize
- Datadog
- GraphQL
- Prisma
- gRPC
- Elasticsearch
- Zustand
- TypeScript
- pytest
- Auth0
- Git
- Docker
- SQL
- Playwright
- TanStack Query
- OpenAI API
- Vitest
- Testcontainers
- Redux Toolkit
- Express
- AWS
- REST APIs
- Azure
- Angular
- CSS3
- Nuxt

To contact Steven, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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