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Kaushik Kumar

@kaushikkumar3

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Product-driven frontend senior engineer building high-performance, API-driven web apps.

India

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What I'm looking for

I’m looking to lead frontend architecture for scalable, performance-first products—owning end-to-end features, collaborating tightly with backend and design, and continuously improving delivery through mentoring, code quality, and measurable performance gains.

I’m a product-driven Frontend Senior Software Engineer with 10+ years of experience building high-scale, performance-optimized web applications. I focus on system-oriented UI architecture, reusable component design, and API-first, end-to-end feature ownership—so what ships is scalable, reliable, and user-centric.

At Tourhashtag, I led a 15-member frontend team, owned frontend architecture for performance and maintainability, and mentored engineers through code reviews, pair programming, and technical sessions. I partnered with backend teams to deliver API-first modular integrations that increased system efficiency by 30%, and I improved application performance by achieving 40% faster pageload time through lazy loading, code splitting, and bundle optimization. I also built and standardized reusable component libraries to accelerate development across projects, owned sprint planning and release cycles for predictable delivery, and resolved critical production issues via root-cause analysis.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer – Frontend

Current

Tourhashtag

Apr 2019 - Present (7 years 1 month)

Led a 15-member frontend team by defining architecture, planning delivery, and standardizing reusable component libraries. Improved overall system efficiency by 30% through API-first modular integrations and delivered 40% faster page loads using lazy loading, code splitting, and bundle optimization.

Angular TypeScript Frontend Architecture Lazy Loading Performance Optimization API Integration Component Libraries GitHub Jira

Sr. UI Developer

Brand'sbrtoher

Jan 2015 - Feb 2019 (4 years 1 month)

Owned end-to-end UI development for enterprise web applications, delivering responsive, mobile-first interfaces focused on performance and usability. Improved user engagement and overall user experience by 20% by translating complex business requirements into scalable frontend solutions.

Angular TypeScript Responsive Design State Management GitHub Jira