FIG. A · Door A · Software engineering, product instinct, applied AI
Engineering & AI
One body of work, read three ways. The software-engineering thread runs from a solo-built production SaaS down to wire protocols and lock-free queues; the applied-AI thread runs from on-device speech to abstaining LLM routing to a challenge-leaderboard retrieval system; the product thread is what keeps both pointed at people. The ordering below is deliberate — production systems first.
FIG. A.1
qlabaqua.com
A solo-built production SaaS: 38 REST routes behind 30 live pages, an idempotent Razorpay core, and a CI gate of 330+ tests.
PAYMENTS · RATE LIMITING · 500+ CONCURRENT
FIG. A.2
GoRESP Edge Cache
A Go network data plane: RESP-2 protocol, AOF durability fuzzed with SIGKILL, replication, and health-checked load balancing — each subsystem wired to a live model.
RESP-2 · AOF · REPLICATION · LB
FIG. A.3
Deaf Audio Assistant
Visual access to sound, fully on-device and on CPU: streaming captions plus hazard alerts inside a 500 ms p95 budget — bench-measured at 102 ms.
C++ · SPSC RINGS · p95 102.136 ms
FIG. A.4
Slack Data Copilot
A Slack bot that routes each query to SQL, retrieval, or refusal — with a train-free router you can interrogate live on this site.
92% TRAIN-FREE ROUTING · SELF-HEALING SQL
FIG. A.5
Language-Based Audio Retrieval
DCASE 2025 Task 6 submission: contrastive audio–text towers with multi-positive learning and hard-negative mining, ranked on the official leaderboard.
mAP@10 30.01 · R@10 59.35 · CLOTHO
FIG. A.6
Hindi Sahitya Sabha Website
A community product taken from a 50+-response survey to a shipped site with a Git-as-CMS pipeline, CSP-hardened rendering, and contract tests.
SURVEY → ROADMAP → LAUNCH
FIG. A·W · Internships shown through the engineering lens
Work, read as facets
May 2026 · Kolkata
Full Stack Software Developer Intern — AQUA Pvt. Ltd.
Solo-built the production SaaS at qlabaqua.com — 38 REST API routes across 30 live pages in React/Next.js TypeScript. The money path stays idempotent under retries (unique-index upserts, lost-race recovery, timing-safe HMAC over raw webhook bodies, a 30-day ledger reconciliation), and CI gates on 330+ Vitest tests including a 43-case payments suite.
→ the full system, dissected: FIG. A.1
Jun – Jul 2026 · New Delhi
Founder's Office — Software and Automation Intern — The Rocket Media
Built therocketmedia.tech from scratch solo — a Next.js static site on Sanity CMS, 98 pages via Cloudflare, with a serverless waitlist API and a GROQ cache-busting wrapper. Then the GenAI side: an 11-stage, 3,900-line Python pipeline in Docker (gating, backoff retries, checkpoint resume, renders to AWS S3) producing 8–12 reels per episode, with INT8 Whisper large-v3 transcription at ~3% WER and LLM output gated through 12 Pydantic schemas. The selection funnel is measured, not asserted: 11 of 75 candidates shipped as reels (≈15%).
→ the same months through the analytics lens: Door B · Work, read as facets
Jun – Jul 2025 · New Delhi
AI Solutions Consultant — Airawat Research Foundation
Mapped machine-learning opportunities across Delhi Transport Corporation’s 44-depot network and 2,000-plus bus fleet, through structured interviews with 15-plus officials across six departments. Eight recognized problems became three shortlisted, solution-designed projects — transfer optimization, e-ticket sales growth, range prediction — presented to senior DTC leadership as a transformation plan targeting 50%-plus operational-efficiency gains.
The second practice lives behind Door B — Markets & Risk. The person behind both is in About.