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Karishma Mhatre

@karishmamhatre

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Staff Software Engineer at Tekion who shipped LLM-powered service features and rewrote payments architecture.

India

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At Tekion, I shipped LLM-powered features for dispatch optimization, upsell identification, and service recommendations. I also led a three-engineer team in rewriting payments architecture and introducing a unified gateway integration layer for PayPal, Stripe, and Sunbit.

At Arcana, I own the user authentication module and implemented JWT flows, refresh token rotation, and Microsoft login. Earlier, I built React features and Kafka-based messaging services at Paytm Insider, and contributed to products and payment integrations at Mobikon.

Experience

Work history, roles, and key accomplishments

Current

Engineer

Current

Arcana

Jul 2026 - Present (4 months)

Owned the user authentication module, implementing JWT-based authentication flows and refresh token rotation. Integrated Microsoft login and built frontend onboarding flows using React.

JWT Authentication React Token Management Microsoft Login

Staff Software Engineer

Tekion

May 2021 - Jun 2026 (5 years 1 month)

Architected LLM-powered features using function calling and agentic workflows for dispatch optimization and upsell identification. Led a team in rewriting payments architecture and introduced a unified gateway integration layer for PayPal, Stripe, and Sunbit.

LLM Function Calling Agentic Workflows Payments PayPal Stripe Sunbit AWS Azure Module Federation PSPDFKit OpenReplay Sentry Pendo Observability

Software Engineer

Paytm Insider

Sep 2019 - Apr 2021 (1 year 7 months)

Built React features for insider.in and internal tools for event management and seat mapping. Contributed to the Paytm chat platform, building Kafka-based messaging microservices and integrating AWS SES/SNS for communications.

React Kafka Microservices AWS SES AWS SNS

Software Engineer

Mobikon

Jul 2018 - Aug 2019 (1 year 1 month)

Worked on mEngage, mReward, and mOrder products for restaurant engagement, analytics, ordering, and loyalty. Contributed to the AngularJS-to-React/Redux migration and integrated PayPal, PayUMoney, and Checkout payment platforms.

AngularJS React Redux PayPal Payumoney Check Out