Devraj Singh
I buildweb applicationsPassionate Frontend Developer with 3+ years of experience designing and developing modern web applications using React.js, TypeScript, and Next.js. Adept at building responsive, accessible, and maintainable UIs with a focus on performance, scalability, and client success.
About Me
Get to know me better
I’m a passionate Frontend Developer with over 3 years of experience crafting modern, user-centric web applications using React, TypeScript, and Next.js. My journey into web development started with a curiosity for how interfaces shape user behavior, which naturally led me to focus on building clean, scalable, and intuitive UIs.
Professionally, I’ve worked on enterprise platforms powering digital advertising for major retailers like Home Depot, CVS, Macy's, and Staples. From ad campaign automation to analytics dashboards and approval workflows, my work has helped unlock new revenue streams, improve compliance, and enhance user engagement.
I believe great frontend development is a balance of thoughtful UX, solid engineering, and maintainable code. I enjoy collaborating with designers, backend engineers, and product teams to deliver features that are both technically sound and impactful.
Outside of work, I like building side projects, exploring new frontend tools, and continuously refining my craft. I’m open to exciting opportunities where I can grow further and build products at scale.
Skills & Expertise
A comprehensive overview of my technical proficiencies and tools I work with daily
Ai Ml
1Backend
2Database
1Design
2Frontend
8Soft Skills
4Testing
2Tools
1Work Experience
My professional journey
Frontend Developer
Pentaleap/ Crealytics
•full-timeWorking on enterprise-scale advertising platforms used by global retailers. Responsible for building scalable frontend solutions, automating complex ad workflows, and delivering high-impact features that drive revenue, compliance, and advertiser engagement.
Key Responsibilities:
- Develop and maintain enterprise-grade web applications using React.js, TypeScript, and Material UI
- Lead frontend implementation of complex ad campaign workflows and approval systems
- Build reusable, scalable UI components with a focus on performance and maintainability
- Integrate frontend applications with REST APIs using React Query
- Collaborate closely with product managers, designers, and backend teams in an Agile/Scrum environment
- Ensure brand compliance and high-quality user experience for retailer-facing platforms
- Participate in code reviews and promote best practices across the frontend codebase
Achievements:
- Led development of Buy-out Ad Campaigns, automating previously manual workflows and enabling new revenue streams for clients like Home Depot and Staples
- Spearheaded Ad Approval workflows, unlocking multi-million dollar partnerships with Home Depot, CVS, and ICA
- Launched new ad formats (HTML5 banners and Video Ads), achieving 2.5× higher CTRs compared to static creatives
- Built advanced Publisher Manager Dashboard and reporting tools, significantly reducing reporting turnaround time for enterprise clients such as CVS, Macy’s, and Staples
Frontend Developer
Ottermap
•full-timeWorked on an interactive mapping platform focused on property measurement and order placement. Played a key role in improving usability, engagement, and overall user experience for end users.
Key Responsibilities:
- Develop interactive frontend features using React.js
- Integrate mapping solutions using OpenLayers and Google Maps APIs
- Build responsive and user-friendly interfaces focused on usability and clarity
- Collaborate with stakeholders to iterate on features based on user feedback
- Debug, optimize, and maintain existing frontend functionality
Achievements:
- Designed and implemented interactive mapping and measurement tools, increasing user engagement by 25%
- Improved UX through continuous iteration and feedback-driven enhancements
- Contributed to higher user retention and positive client feedback through UI and usability improvements
Web Developer
Trozorro Startup Solutions (P) Ltd.
•internshipWorked on multiple client-facing web projects, focusing on landing pages and internal tools. Collaborated closely with designers to translate UI designs into responsive and functional web interfaces.
Key Responsibilities:
- Design and develop web interfaces using React.js and Material UI
- Convert Figma designs into pixel-perfect, responsive UI components
- Build landing pages and internal support tools for software products
- Ensure consistent styling and usability across devices and screen sizes
- Iterate on UI based on feedback from stakeholders
Achievements:
- Designed and developed Coworking Management Support interfaces used for internal operations
- Delivered multiple responsive software landing pages aligned with design specifications
- Strengthened UI implementation skills by working closely with design tools like Figma
Frontend Developer
Zouke
•internshipContributed to the development of the company’s MVP by building core user-facing features and working within a large, evolving frontend codebase. Gained hands-on experience developing production-ready React applications and collaborating in a fast-paced startup environment.
Key Responsibilities:
- Develop and maintain frontend features using React.js and Redux
- Build responsive and modular UI components using CSS Modules
- Work within a large existing codebase while following established patterns and best practices
- Implement authentication-related flows and real-time UI components
- Collaborate with team members to integrate features into the MVP
Achievements:
- Developed key MVP features including Reset Password, Chat, and Live Performance Tracker screens
- Successfully delivered production-ready components within tight timelines
- Gained experience handling and navigating a large-scale frontend codebase early in the product lifecycle
Education
My academic background
Bachelor of Technology
J.C. Bose University of Science and Technology, YMCA (Formerly YMCA UST)
Computer Science
Achievements & Awards
Milestones and recognitions
Featured Achievements
5th price in Technovation Hackathon
Sharda University
Participated in Smart India Hackathon
Ministry of Education (MoE)'s Innovation Cell and AICTE
Get In Touch
Wherever you are in the world, let's work together on your next project.