Ayush Singh

Senior Software Engineer

• Built and shipped a SEBI employee trade-declaration compliance platform end-to-end, solo in under a week: React frontend, Python (FastAPI) backend, Firebase Google sign-in, Google Drive document submission, and Slack notifications. Automated parsing and validation of trade reports across 6+ brokers (Zerodha, Groww, Angel One, ICICI, Dhan), cutting turnaround from days to minutes; adopted company-wide.
• Built the real-time data layer of a single-screen scalping platform on the web trading product: low-latency WebSocket market streaming (RxJS) and browser-side persistence (LokiJS/IndexedDB), alongside SciChart charting with custom indicators.
• Designed the team's agentic AI development workflow — Claude Code agents with custom skills for planning, TDD-based migration, code review, and validation loops, adopted by teammates and reinforced with structured peer reviews — and used it to lead the Kotlin Multiplatform migration of the flagship Android app (15k+ DAUs) and KYC onboarding SDK (60+ screens) to 90–95% shared code with zero regressions, mentoring a junior engineer and shipping the company's first iOS app in under 3 months.

Senior Software EngineerMay 2025 – Jan 2026

• Co-led the Captured team as the race-photo marketplace scaled, setting technical direction and working directly with organizers and leadership on scope: a serverless pipeline handling 1M+ photos monthly for 150k+ peak-season visitors, an organizer platform (event management, revenue tracking, credit-based billing) for 100+ organizers across 1,000+ events monthly, and personalized per-runner race videos rendered serverlessly (AWS Lambda, S3, Remotion).
• Co-led a 6-engineer pod building Spolo, a turf-booking marketplace, 0 → 1, mentoring 2 engineers: owned user and organizer onboarding full-stack (Next.js, NestJS, PostgreSQL) and the versioned APIs backing the Flutter mobile app. First release in 4 months, with the user booking site shipped to production in under 2 weeks by a 3-person frontend team.
• Cut peak-load page times on India Running (10k+ DAUs) from 30–60s to ~10s by independently implementing read/write datasource separation and tuning hot queries with raw SQL.
• Co-built a VPC-internal communication platform consolidating notification logic from all 3 company products: 50k+ email/SMS/WhatsApp/push notifications daily with multi-provider auto-retry (AWS SES, Twilio, Meta WhatsApp API), cutting third-party costs.
• Conceived and built a face-recognition race timing system as the sole engineer — prototype to live-event production on a portable phone-and-tripod setup, validated at 95% accuracy head-to-head against RFID at a 2,000-runner event while cutting per-event timing costs from ₹200,000 to under $5 of compute.
• Integrated a full observability stack across 10+ services (SigNoz, Sentry, AppOptics) and led security hardening — VAPT testing plus backend-issued S3 signed URLs, eliminating credential exposure for 10k+ users.

Software Engineer (prev. Intern)Oct 2023 – May 2025

• Built and launched Captured, a web platform for managing, discovering, and selling race photos, as the sole engineer — frontend, backend, and the photo-processing pipeline, from first commit to a live marketplace.
• Re-architected Captured's photo-processing pipeline off a Kafka-based system onto serverless, cutting end-to-end processing time from days to hours.
• Built serverless media systems: on-demand photo watermarking with live organizer preview, and a concurrent-upload CLI that turned a 12–20 hr, 3-person manual process into a 4 hr single-machine job for 150,000 photos (400 GB).