Open to opportunities

Kashish Singh

@kashishsingh2

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Full-stack engineer building scalable React, Node.js, and authentication systems.

India

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What I'm looking for

I’m looking for a role where I can own production-grade authentication and scalable APIs, build high-impact React/Node features, and ship reliably across complex enterprise systems.

I’m a Full-Stack Software Engineer with 2.5+ years designing and shipping React, Next.js, Node.js, and PostgreSQL applications for Fortune 500 clients. I’ve owned production authentication systems, scalable API architecture, and end-to-end delivery—from design through deployment—focusing on reliability under concurrent load.

At Deloitte, I led frontend delivery across HR and Payroll modules, drove component architecture and rollout strategy, and resolved 100+ production backend defects in enterprise payroll/HR workflows. As an intern, I shipped customer-facing features and fixed 80+ UI/UX issues, while integrating REST APIs for real-time product experiences. I also build practical tools and systems, including an open-source GitHub developer tool and authentication-heavy platforms like TaskFlo.

Experience

Work history, roles, and key accomplishments

Software Engineer (Analyst)

Deloitte USI

Jan 2023 - Jul 2025 (2 years 6 months)

Designed a production authentication architecture for enterprise modules, including rotating refresh tokens, request deduplication, and a three-state client auth flow for consistent session state under concurrent requests. Owned end-to-end frontend delivery across HR and Payroll modules and resolved 100+ production defects across enterprise payroll/HR workflows.

Frontend Developer (Intern)

SalesBook

Sep 2022 - Jan 2023 (4 months)

Owned UI development for a customer-facing B2B SaaS product, shipping new features and resolving 80+ UI/UX issues using React and TypeScript. Integrated REST APIs to power real-time data flows and dynamic product features.