Sarthak Painuli

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.

Open to

Bangalore · Delhi · Pune

Work style

remote, hybrid, onsite

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Contact details — on requestProof of Work — on request

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.
NXP Semiconductors

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.
JUSPAY

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
NXP Semiconductors

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
EazyByts.com

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.

Skills 0 proven through work

Also works with

PCI DSS ComplianceDynamic Payment RoutingService Module DevelopmentSoftware Library DevelopmentVersion Control with GitHubTransparent CommunicationStakeholder ManagementDatabase NormalizationLow-Latency System OptimizationDatabase Query OptimizationQuery WritingJava DevelopmentCode RefactoringAPI IntegrationJSP DevelopmentUser Experience ImprovementUser Interface DesignProcess ImprovementFull-stack DevelopmentAPI Authentication ImplementationWebhook HandlingRefund ProcessingApplication Performance OptimizationFront-end DevelopmentPayment Gateway Integration

Proof of Work

Proof of Work

Sarthak shares this with people who ask. You'll hear back either way.

Education

B.Tech, Computer Science Engineering

Jaypee Institute of Information Technology · NaN — NaN

Contact details

Contact details

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