Subhra Jyoti Baroi

Senior Frontend Engineer with 6 years of experience building complex web products across B2B SaaS, EdTech, supply-chain technology, and AI. Leads high-impact engineering initiatives while remaining deeply hands-on in frontend architecture, AI engineering, and performance optimization. Delivered measurable outcomes including 80% faster application loads, 99% LMS sync accuracy, and browser-extension failure reduced from 10% to 0.8%.

Published 2 research papers and writes about engineering at subhrajyotibaroi.in.

Senior Software Engineer - Wayground (formerly Quizizz) - Bengaluru, Onsite

(2025-10 - 2026-03)

K-12 learning platform · React, Vue, NodeJs, ExpressJs & JavaScript

• Architected an AI-powered reporting pipeline that converts natural-language questions into live insights by generating and safely executing SQL against BigQuery, then returning structured JSON results. Designed schema-aware context and query guardrails for reliable data access, and mentored two engineers through delivery.
• Designed a server-driven UI on that contract — backend specifies chart type, data keys and styling; client resolves them into components — shipping new report formats without a frontend release, with sensitive fields hashed in the data path.
• Directed three engineers delivering Hot Text, a new interactive question type: designed the API contract so answers ship as identified spans with the key withheld pre-submission, and implemented the client layer — container-level event delegation, node-to-ID mapping, four visual states across wrapping inline content.
• Improved LMS grade-sync accuracy from 94% to 99% across Canvas, Schoology, and Google Classroom by building failure observability in BigQuery, automated retry handling for recoverable errors, and itemized user feedback with manual resync for actionable failures.
• Built the localization pipeline — build-time string extraction, Crowdin sync, hourly CDN publish — decoupling translations from deploys, and instrumented the app with Sentry (source maps in CI, release tracking, alert routing).

Senior Frontend Engineer - Hiver - Remote

(2024-03 - 2025-09)

Gmail-native customer support & shared-inbox SaaS · Technical lead, 3–4 engineers

• Led a team of four on Custom Fields, letting admins define their own fields on Hiver records, with forms, tables, filters and validation rendered dynamically from that definition rather than hardcoded components.
• Directed a team of four on Custom Objects, extending Hiver’s data model to fully admin-defined entity types; integrated them with Automations so customer-defined data could participate in workflow rules, as part of a product initiative associated with a 9.2% ARR uplift.
• Owned the browser extension charter, cutting failure rate from 10% to 0.8%: Manifest V3 blocked third-party error SDKs from the injected context, so wrote in-house telemetry, then traced the long tail to Gmail canary rollouts where identical selectors resolved in some regions and failed silently in others.
• Re-architected the launch pipeline, cutting load time 80% (20s → 4s): parallelized serial bootstrap requests, decomposed monolithic startup APIs for progressive render, and added a versioned client cache alongside bundle splitting and CDN tuning.
• Piloted AI-assisted development — evaluated tooling, authored usage guidelines, cut delivery timelines ~20% — and reworked onboarding to lift feature adoption 12%.

Frontend Engineer - Original4Sure (O4S) - Remote

(2022-04 - 2024-03)

Supply-chain traceability & anti-counterfeit · Vue 2 / Vue 3 & JavaScript

• Built the anti-counterfeit verification widget — a third-party embed running inside hostile host pages with full style and global isolation — for a platform that cut client counterfeiting by 30%.
• Launched ChannelBLU solo, zero to MVP in 30 days — the first CRM managing distributors, retailers, agents and contractors for manufacturers, now serving 100+ enterprises and 500+ partner-portal users.
• Engineered the order management dashboard — production tracking, automated QR serialization, plant/batch association and ERP integration — on a platform that has serialized 1B+ products.
• Shipped the digital warranty tool across dashboard and widget, reaching 100k+ warranty registrations.
• Migrated the dashboard from Vue 2 to Vue 3 and created an in-house component library, porting the full application onto the new design system while lifting legacy widget Lighthouse scores 35%.

Fullstack Engineer - Huawei Technologies India - Remote

(2020-07 - 2022-03)

R&D: internal AI tooling & open-source distributed SQL query engine · Angular & Java Spring Boot

• Contributed multi-level spilling for ORDER BY to openLooKeng, an open-source distributed SQL query engine — spilling intermediate state to disk under memory pressure and improving query efficiency 10%.
• Developed an internal AI model-training and deployment platform end to end, spanning frontend and supporting microservices, enabling teams to train and deploy models.
• Established the testing baseline across the stack — 85% backend and 78% frontend coverage — and improved dashboard Lighthouse performance 15%.

B.Tech - Computer Science and Engineering - NIT Silchar (2016 - 2020)