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I'm a versatile full-stack and backend Software Development Engineer (SDE) with a track record of building scalable systems using React, Next.js, Node.js, TypeScript, PostgreSQL, Redis, Docker, and Kubernetes. I have solved 300+ data structures and algorithms problems, a strong foundation in OOP, system design, and experience delivering production applications used by thousands of users with clean architecture and thoughtful engineering decisions.…I'm a versatile full-stack and backend Software Development Engineer (SDE) with a track record of building scalable systems using React, Next.js, Node.js, TypeScript, PostgreSQL, Redis, Docker, and Kubernetes. I have solved 300+ data structures and algorithms problems, a strong foundation in OOP, system design, and experience delivering production applications used by thousands of users with clean architecture and thoughtful engineering decisions.

Kartik Singh

Web Developer, Programmer, Front-End Developer, +3

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I'm a versatile full-stack and backend Software Development Engineer (SDE) with a track record of building scalable systems using React, Next.js, Node.js, TypeScript, PostgreSQL, Redis, Docker, and Kubernetes. I have solved 300+ data structures and algorithms problems, a strong foundation in OOP, system design, and experience delivering production applications used by thousands of users with clean architecture and thoughtful engineering decisions.…I'm a versatile full-stack and backend Software Development Engineer (SDE) with a track record of building scalable systems using React, Next.js, Node.js, TypeScript, PostgreSQL, Redis, Docker, and Kubernetes. I have solved 300+ data structures and algorithms problems, a strong foundation in OOP, system design, and experience delivering production applications used by thousands of users with clean architecture and thoughtful engineering decisions.

Available to hire

I’m a versatile full-stack and backend Software Development Engineer (SDE) with a track record of building scalable systems using React, Next.js, Node.js, TypeScript, PostgreSQL, Redis, Docker, and Kubernetes.

I have solved 300+ data structures and algorithms problems, a strong foundation in OOP, system design, and experience delivering production applications used by thousands of users with clean architecture and thoughtful engineering decisions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Advanced

Hindi

Advanced

Work Experience

Member at DSDL

October 1, 2024 - Present

Developed web applications using RESTful architecture, improving project delivery efficiency by 10%.

Web Development Intern at InternPe

August 1, 2024 - October 23, 2025

Built front-end features with React.js and HTML/CSS and JS. Developed back-end services using Node.js/Express, ensuring seamless RESTful API integration.

Freelance Web Developer at Upwork

January 1, 2025 - Present

Delivered projects using React.js, Node.js, earning 5-star ratings.

Member at DSDL KIET

October 1, 2024 - Present

Developed web applications using RESTful architecture, improving project delivery efficiency by 10%. Collaborated on data science projects, leveraging containerization with Docker for scalable deployments.

Web Development Intern at InternPe

August 1, 2024 - October 23, 2025

Built front-end features with React.js and HTML/CSS, reducing page load times by 15% via CI/CD pipelines. Developed back-end services using Node.js/Express, ensuring seamless RESTful API integration.

Freelance Web Developer at Upwork

January 1, 2025 - Present

Delivered 5+ full-stack projects using React.js, Node.js, and AWS, earning 5-star ratings. Designed responsive websites with Agile Development, translating Figma designs into modern UI/UX.

Freelance Full-Stack Developer at Upwork (Remote)

January 1, 2025 - Present

Delivered 8 production projects for clients using React, Node.js, and AWS; maintained consistent 5.0-star ratings across all engagements.

Member at Developer Student Club (DSDL KIET)

October 1, 2024 - Present

Built and scaled 3 full-stack applications handling 10,000+ concurrent users using Docker and CI/CD pipelines.

Education

B.Tech in Computer Science and Information Technology at KIET Group of Institutions

January 1, 2023 - January 1, 2027

Senior Secondary (12th Grade) at Public School Darbhanga

January 1, 2020 - January 1, 2021

Secondary (10th Grade) at Darbhanga Public School

January 1, 2017 - January 1, 2019

B.Tech in Computer Science and Information Technology at KIET Group of Institutions Ghaziabad, India

January 1, 2023 - January 1, 2027

Senior Secondary (12th Grade) at Public School Darbhanga Darbhanga, India

January 1, 2021 - January 1, 2021

Secondary (10th Grade) at Darbhanga Public School Darbhanga, India

January 1, 2019 - January 1, 2019

B.Tech – Computer Science and IT at KIET Group of Institutions, Ghaziabad

January 1, 2023 - January 1, 2027

Qualifications

Palo Alto Certified Cybersecurity Fundamentals

July 1, 2025 - October 23, 2025

GenAI Experience in UiPath Document Understanding

June 1, 2025 - October 23, 2025

Palo Alto Certified Cybersecurity Fundamentals

July 1, 2025 - October 23, 2025

GenAI Experience in UiPath Document Understanding

June 1, 2025 - October 23, 2025

Palo Alto Cybersecurity