yash-sinha
Get in touch
Open to new opportunities · Pune, India
yash@portfolio: ~

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Software Engineer II @ AppDirect ⚡ LCP -59% (4.6s→1.9s) ✓ Test coverage 70%→90% 400+ LeetCode solved CGPA 9.14/10
CHANGELOG.md

Experience

Semantic versioning, applied to a career — major bumps for full-time conversions, minors for expanded scope.

[Unreleased] Apr 2026 — Present

Software Engineer II @ AppDirect, Pune

  • PerfUX Led the full redesign of a high-traffic React admin console, cutting Largest Contentful Paint by ~59% at the 75th percentile (4.6s → 1.9s) and total load time by ~58% (4.7s → 2.0s) — shipped behind feature flags with automatic fallback and real-user monitoring, reaching full production rollout.
  • Feature Built the self-serve sign-up flow that lets new business customers launch their own branded online marketplace, automatically provisioning the right billing and subscription plans the moment they sign up.
  • AI Automated multi-language content translation with an in-house AI pipeline, replacing a paid third-party vendor — removing recurring cost and enabling weekly self-serve translation releases with roughly $60,000 in annual savings.
  • AISecurity Enabled a new marketplace app type that customers build themselves with AI — scoped visibility to the owning company, locked down editing by others, and built the admin back end to approve or revoke access.
  • Incident First responder on a customer-facing production outage across partner storefronts — diagnosed and mitigated the issue, restored marketplace search availability, and authored the root-cause analysis.
[2.0.0] Aug 2024 — Mar 2026

Software Engineer I @ AppDirect, Pune

  • FeaturePlatform Designed and shipped GraphQL product lifecycle workflows for publish/unpublish operations across marketplace channels, using feature flags, progressive rollout, and rollback-safe releases to cut operational risk.
  • Search Improved marketplace search relevance through Elasticsearch ranking tuning, spell correction, and indexing enhancements for related-product groupings — raising discoverability and result quality.
  • Platform Led backend modernization onto Java 21 with build-tool upgrades, mapper and framework migrations, and legacy feature-flag cleanup — ~83% reduction, 150 down to 26 — lowering technical debt and lifting engineering velocity.
  • SecurityUX Strengthened delivery quality by remediating high-priority dependency vulnerabilities, enforcing CI/CD policy compliance, and shipping tested accessibility improvements across admin experiences.
[1.1.0] Feb 2024 — Jul 2024

Software Engineer Intern @ AppDirect, Pune

  • Perf Refactored complex JDBC queries into Spring Data JPA specifications, cutting query latency and unnecessary DB joins.
  • Data Configured and maintained Debezium connectors for real-time data synchronization.
  • Test Raised unit and integration test coverage from 70% to 90%, improving code quality and reliability.
[1.0.0] Jul 2023 — Dec 2023

Software Development Intern @ Digilytics Systems, Pune

  • Feature Built a dynamic survey application supporting diverse question types with React.js, Firebase, Material UI, and E-Charts.
  • Feature Shipped a unique-URL feature to boost response participation.
  • Feature Created an admin panel to monitor response metrics and export results as CSV.
package.json

Skills

"languages":

JavaTypeScriptJavaScriptC++SQL

"frameworks":

Spring BootReact.jsNode.jsKafkaElasticsearchGraphQLREST APIsMySQL

"concepts_and_tools":

MicroservicesEvent-Driven ArchitectureOOPDSACI/CDGitKubernetesObservability (Datadog RUM/APM)AI/LLM IntegrationWeb Performance (Core Web Vitals)
projects/

Projects

Sociopedia

A privacy-focused social platform built with strong authentication and authorization. Precise post-visibility and interaction controls keep the experience ad-free and child-friendly, backed by a React front end and MongoDB for storage.

React.jsNode.jsExpress.jsMongoDBREST API
View repository

CryptoApp

A real-time cryptocurrency tracker built on the CoinGecko API, giving users live price and market-trend updates. Firebase Firestore powers the Contact Us flow, with a responsive Chakra UI interface across devices.

React.jsChakra UIFirebase
View repository

Open source & mentorship

Contributed to Real Dev Squad — fixing authentication issues, building website components, and authoring unit tests. Mentored students at TechLearn.live on AI/ML, and built social-media carousel components alongside them.

education.md

Education & awards

MIT World Peace University

Bachelor of Technology, Computer Science Engineering

Jul 2020 — Jul 2024 · Pune, India

CGPA 9.14/10
Gold AwardIdeathon Winner, MIT-WPU
Silver AwardRorathon Runner-Up, Sharekhan
400+ problems solvedLeetCode
contact.sh

Let's talk

Currently open to new roles — the fastest way to reach me is email.