Sarthak Painuli

As a Product Engineer with 5 years of experience, I approach every challenge with determination and a pragmatic mindset, driven by a strong ambition to deliver impactful solutions. I take full accountability for my work, adapting flexibly to evolving requirements while upholding honesty and integrity in every project.

Experience

J

Product Engineer

Juspay · Present

Not yet confirmed

• Designed and built a scalable, high-performing multi-method checkout system with dynamic payment routing across frontend and backend services, increasing payment processing throughput by 70% through robust REST API integration.
• Built and maintained 6+ resilient backend microservices/transaction flows (initiation, 3DS authentication, refund, capture, webhook ingestion), ensuring secure, reliable checkout across 3+ payment providers through rigorous code quality practices.
• Improved application performance and reliability by 15% by optimizing backend service modules and collaborating cross-functionally to reduce load times across the payment flow.

Web Development Intern

NXP Semiconductors · Present

Not yet confirmed

• Streamlined employee workflows across the org by designing and developing 8+ scalable, high-quality full-stack web applications using Java, JSP, SQL, and HTML5/CSS/JS, collaborating cross-functionally with stakeholders on solution design.
• Enabled real-time tracking and reservation of 100K+ tools by architecting a resilient lab inventory and booking management system combining a responsive frontend UI with robust backend query logic.
• Increased adoption of an internal developer tooling platform by 40% by improving frontend workflows and ensuring code quality for embedded systems validation and diagnostics.

Product Engineer

JUSPAY · Aug 2025 – Jun 2026

Not yet confirmed

• - Increased payment processing throughput by 70% by building a multi-method checkout page, integrating dynamic payment options across frontend and backend
• - Designed and integrated 6+ end-to-end transaction flows — initiation, 3DS auth, refund, capture, webhook ingestion — across 3+ payment providers
• - Improved UI rendering performance by 15% by optimizing Presto-based modules, speeding up load times across the payment flow

Web Development Intern

NXP Semiconductors · Jul 2024 – Jun 2025

Not yet confirmed

• - Built a lab inventory and booking management system handling 100,000+ tools, combining a responsive frontend with real-time backend query logic
• - Developed 8+ internal full-stack web applications (Java, JSP, SQL, HTML/CSS/JS) to streamline employee workflows
• - Increased adoption of an internal developer tooling platform by 40% by improving frontend workflows for embedded systems validation

Web Development Intern

EazyByts.com · Jun 2024 – Jul 2024

Not yet confirmed

• As a web development intern at EazyByts, I contributed to designing, developing, and maintaining user-friendly websites and web applications.
• My responsibilities included coding, debugging, and optimizing front-end and back-end features, ensuring seamless user experiences.
• I collaborated closely with the design and development teams to implement innovative solutions, meeting project deadlines effectively.
• During my tenure, I successfully enhanced website performance, streamlined codebases, and introduced responsive design elements, significantly improving user engagement and satisfaction.
• My proactive approach and dedication to delivering high-quality results earned recognition from both my peers and supervisors.