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Koustubh Lapate

@koustubh18

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Full Stack Engineer with 2+ years of freelancing experience on Upwork and Braintrust

India

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What I'm looking for

Looking for a remote Full Stack Developer role to build and scale web applications, optimize performance, and contribute to impactful products. I enjoy solving complex problems, writing clean code, and collaborating with teams to create efficient, user-focused solutions that drive business growth.

I am a Full Stack Engineer with over two years of freelancing experience on Upwork and Braintrust, specializing in building scalable and high-performance web applications. My expertise lies in both frontend and backend development, delivering tailored solutions that enhance user experience and business efficiency.

Throughout my freelancing journey, I have worked with diverse clients, developing SaaS platforms, real-time applications, and automation tools. More recently, I have been exploring AI-driven solutions, integrating chatbots and automation to enhance business operations and customer interactions.

Beyond development, I am passionate about software architecture, scalability, and maintainability, ensuring that the applications I build are efficient and future-proof. I am always eager to explore new challenges, collaborate on innovative projects, and contribute to impactful solutions.

I am currently seeking remote opportunities where I can apply my expertise in full-stack development and AI-driven automation to build smart, high-quality digital products.

Experience

Work history, roles, and key accomplishments

Current

Freelance Full Stack Developer

Current

Braintrust

Jul 2024 - Present (10 months)

- Designed and developed robust, reusable UI components in React, reducing redundancy and improving maintainability.
- Enhanced frontend performance with efficient state management and optimized rendering, improving load times and user experience.
- Wrote clean, well-structured code with comprehensive unit and integration tests, ensuring reliability and smooth deployments.

JavaScript JavaScript (Node.Js TypeScript React Next.js ExpressJS MongoDB

Current

Freelance Full Stack Developer

Current

Upwork

Nov 2022 - Present (2 years 6 months)

- Developed 30+ reusable UI components with React.js, Next.js, TypeScript, and Tailwind CSS, boosting efficiency by 40%.
- Reduced load times by 25% using SSR/SSG in Next.js.
- Cut **bundle size by 30%** with code splitting and lazy loading.
- Built RESTful APIs with Node.js (Express.js).
- Ensured high code quality with ESLint, Prettier, and robust test cases.