Oct 2025 – Present · 8 mos

• Implemented an OAuth 2.0 credential module enabling fine-grained, scoped access to company-level APIs, with API-first documentation.
• Revamped RAG pipelines for code quality evaluation using FastAPI and LangChain, achieving p95 < 1.5s , reducing TTFB from 2s to 500ms.
• Mentored 3 SDE interns and conducted 40+ technical interviews to support team growth.

Jul 2024 – Sep 2025 · 1 yr 2 mos

• Designed a fault-tolerant async worker using BullMQ and Redis to handle code executions, submissions, evaluations, rankings, and exports at scale.
• Built SkillUpBot, a cross-platform AI assistant for VSCode, Xterm (CLI), and Jupyter Notebook, featuring autocomplete and inline chat, improving the developer experience for 10K+ active users.

Jul 2023 – Jun 2024 · 11 mos

• Founding engineer of SkillUp (NextJS+NestJS), scaling the B2B product to $900K+ ARR within a 5-person team.
• Engineered core backend services for SkillUp, meeting strict SLOs of 99.9% availability with p95 ≤ 200ms and p99 ≤ 1s latency by implementing decoupled, domain-driven design principles.

Jul 2022 – Jun 2023 · 11 mos

• Refactored legacy BackboneJS UI into functional React components for 12 question types, integrating Excalidraw, Theia, VSCode and ttyd, improving page load speeds by 50%.
• Upgraded OAuth strategy in Ruby on Rails for CCPA and GDPR compliance, strengthening