Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I'm Justin Dosaj, a full-stack software engineer based in San Diego. I have 3+ years of experience building serverless applications with TypeScript, Node.js, React, and AWS. I enjoy crafting scalable RESTful APIs and infrastructure-as-code with Terraform, and I work with SQL and NoSQL databases. I thrive in fast-paced teams, communicate across disciplines, and deliver reliable software. I've led client projects, integrated third-party services, and helped startups ship robust solutions.…Hi, I'm Justin Dosaj, a full-stack software engineer based in San Diego. I have 3+ years of experience building serverless applications with TypeScript, Node.js, React, and AWS. I enjoy crafting scalable RESTful APIs and infrastructure-as-code with Terraform, and I work with SQL and NoSQL databases. I thrive in fast-paced teams, communicate across disciplines, and deliver reliable software. I've led client projects, integrated third-party services, and helped startups ship robust solutions.

Justin Dosaj

Full Stack Developer, Web Developer, Back-End Developer, +2





Hi, I'm Justin Dosaj, a full-stack software engineer based in San Diego. I have 3+ years of experience building serverless applications with TypeScript, Node.js, React, and AWS. I enjoy crafting scalable RESTful APIs and infrastructure-as-code with Terraform, and I work with SQL and NoSQL databases. I thrive in fast-paced teams, communicate across disciplines, and deliver reliable software. I've led client projects, integrated third-party services, and helped startups ship robust solutions.…Hi, I'm Justin Dosaj, a full-stack software engineer based in San Diego. I have 3+ years of experience building serverless applications with TypeScript, Node.js, React, and AWS. I enjoy crafting scalable RESTful APIs and infrastructure-as-code with Terraform, and I work with SQL and NoSQL databases. I thrive in fast-paced teams, communicate across disciplines, and deliver reliable software. I've led client projects, integrated third-party services, and helped startups ship robust solutions.

Available to hire

Hi, I’m Justin Dosaj, a full-stack software engineer based in San Diego. I have 3+ years of experience building serverless applications with TypeScript, Node.js, React, and AWS. I enjoy crafting scalable RESTful APIs and infrastructure-as-code with Terraform, and I work with SQL and NoSQL databases.

I thrive in fast-paced teams, communicate across disciplines, and deliver reliable software. I’ve led client projects, integrated third-party services, and helped startups ship robust solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Project - Social Media Backend at Self-Directed Project

June 1, 2025 - Present

Designed a RESTful API backend with TypeScript and Express, supporting full CRUD operations for social media content. Integrated Cognito for secure user authentication, adding token verification and route protection to restrict API access. Configured AWS RDS for PostgreSQL and DynamoDB to support persistent storage and real-time capabilities.

Full Stack Engineer at Zesti AI

June 1, 2025 - September 17, 2025

Developed Infrastructure-as-Code using Terraform to automate provisioning and AWS resource management. Built a video ingestion pipeline with RESTful API architecture using AWS Lambda, Node.js, and API Gateway, with CloudWatch logging. Created extensive unit and integration tests with Jest, reducing bug reports by 24%. Implemented dynamic imports and modularized React components to decrease initial load times by 30%. Configured S3 lifecycle policies and DynamoDB TTL to automate data retention and reduce cloud costs by 35%.

Project - Private ChatApp at Self-Directed Project

March 1, 2025 - Present

Built a serverless backend using AWS Lambda and API Gateway to handle chat message processing and PII filtering. Leveraged Docker Compose to orchestrate frontend and backend containers, improving scalability and maintainability. Designed a flexible NoSQL data model using DynamoDB to efficiently store and query chat messages and conversations.

Founder & Developer at Vurge

August 1, 2023 - September 17, 2025

Operated a web development company delivering production-ready applications for clients. Led planning and collaboration with team members using Agile methodology to translate business requirements into technical solutions using React, TypeScript, and GCP. Integrated third-party APIs and SDKs to extend functionality and improve user experience. Transformed Figma wireframes into responsive React components. Enabled secure and reliable transactions for users with Stripe and crypto wallet integrations.