Open to opportunities

Justin Lee

@justinlee3

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Senior Full Stack Engineer with 10 years of experience.

Estonia

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What I'm looking for

I am looking for a role that challenges my skills and allows for growth, especially in innovative projects that leverage AI and cloud technologies.

I am a Senior Full Stack Engineer with a decade of experience in building scalable web applications, particularly in startup environments. My expertise lies in integrating AI and machine learning to optimize processes and enhance user experiences. I have a strong track record of end-to-end project delivery and am proficient in modern frameworks and cloud technologies.

Throughout my career, I have successfully developed various applications, including a stock trading and investment app and an AI-powered healthcare project. My technical skills encompass a wide range of technologies, including JavaScript, Python, and various cloud services. I am passionate about mentoring developers and thrive in collaborative, fast-paced settings where I can solve complex problems.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer

Teravision Technologies

Mar 2023 - May 2025 (2 years 2 months)

Built a brokerage stock trading and investment app, integrating third-party APIs like Alpaca and Kraken for seamless financial data connection. Developed the web application using Next.js and React, focusing on admin dashboard functionality and user interface.

Next.js React TypeScript AWS Lambda API Gateway S3 SNS SQS Cloudwatch Cognito Step Functions Stripe Kafka Redash Grafana

Senior Full Stack Engineer

Mobitsolutions

Feb 2020 - Feb 2023 (3 years)

Developed an AI-powered SaaS healthcare project using Python and Flask, enabling users to generate accurate treatment plans. Implemented an AI-driven summarizing process with OpenAI ChatGPT-3 for detailed treatment plans.

Python Flask AWS PostgreSQL ReactJS Nginx Gunicorn Celery RabbitMQ Redis

Full Stack Engineer

Inoxoft

Jun 2017 - Jan 2020 (2 years 7 months)

Developed a microservice-based Online Banking SaaS Platform using NestJS and PostgreSQL on AWS Cloud. Built a complex admin portal for real-time analytic data using NextJS, TailwindCSS, D3.JS, and GraphQL.

NestJS PostgreSQL AWS Lambda ECS RDS SNS SQS DynamoDB Batch Next.js TailwindCSS D3.Js GraphQL Python Kinesis Kafka Redis IndexedDB GitHub Actions CI CD

Full Stack Developer

Octally OU

Jul 2014 - May 2017 (2 years 10 months)

Collaborated with cross-functional teams in product meetings, ensuring adherence to technical specifications and deadlines in Scrum and Sprints. Participated in the migration from RESTful API to GraphQL API, improving data fetching flexibility and reducing over-fetching/under-fetching issues.