Building production backend systems, database performance tools, and real-time concurrent infrastructure.
"I specialize in backend infrastructure — database performance, security hardening, and real-time concurrent systems. I contribute to InsForge (YC-backed, 12.7K GitHub stars), where I've shipped fixes for O(1) row counters, AI gateway token caps, cache stampede prevention, and stored XSS mitigation — and to Apicurio Registry, a CNCF Sandbox project, where I'm fixing correctness and authorization gaps in the MCP tool subsystem. Currently building a real-time concurrent auction system with Redis atomic operations and WebSocket pub/sub."
"When a maintainer redirected my entire PR architecture mid-review, I didn't argue — I absorbed it, filed a new issue, and rebuilt it cleaner. That's the pattern."
Scaler School of Technology — Computer Science & AI
2025 – 2029 • Bengaluru, India
BITS Pilani — Bachelor of Science (Hons), Computer Science
2025 – 2029 • Online / Distance Learning
github.com/Apicurio/apicurio-registry • CNCF Sandbox Project • Java / Quarkus
| PR / Issue | Impact | Tech |
| #9178 | Filed: MCP tool compatibility checker silently passed schema-breaking changes — inputSchema type removal and per-property type changes — due to an incomplete null guard | Java, JSON Schema, Bug Diagnosis |
| #9181 (closed) | Direct fix + 19 targeted tests; survived 3 maintainer review rounds resolving union-type ordering, property-type removal, and untyped transitions. Closed cleanly after architecture redirect. | Java, Compatibility Checking |
| #9301 | Filed to track the delegation refactor: replace shallow string-based checks with the codebase's existing JsonSchemaDiffLibrary (everit-based), which handles semantic type widening, nested schemas, and constraint evolution | Java, JSON Schema, Architecture |
| #9368 (closed) | Implemented the redirect: relocated checker across Maven modules to resolve circular dependency, replaced ~170 lines of shallow checks with library delegation, corrected 5 false-positive tests. Non-object schema guards, open/closed schema narrowing, and Draft 2020-12 compatibility handled. Approved by paoloantinori; closed by maintainer carlesarnal as "reserved for the LFX term" — confirming the work maps directly onto the mentorship scope. | Java, Quarkus, Maven, JSON Schema |
github.com/InsForge/InsForge • 12.7K+ Stars • YC-Backed
| PR | Impact | Tech |
| #1351 | Centralized 55+ scattered env vars into typed AppConfig (21 files, 49 tests) |
TypeScript, Config Architecture |
| #1494 | Replaced O(n) SELECT COUNT(*) with trigger-backed O(1) row counters |
PostgreSQL, Triggers, Performance |
| #1519 | Bounded tableCountCache with LRU-style size limiting to prevent memory leaks |
LRU Cache, Memory Management |
| #1526 | Token cost caps on AI gateway + promise-lock cache stampede prevention | Security, Rate Limiting, Redis |
| #1541 | Externalized token cap configuration with security boundary tests | Security, Test Architecture |
| #1626 | Magic-byte MIME validation to prevent stored XSS via file upload | Security, XSS Prevention |
| #1443 | Deno global type safety, OAuth AppError standardization, OpenAPI sunset headers | Type Safety, OAuth, API Design |
| #1660 | Fixed a timing side-channel in admin auth using crypto.timingSafeEqual() |
Auth, Security, Attack Prevention |
| #1807 | Bound internal database and runtime ports to localhost | Security, Infra, Docker |
| #1811 | Secured the canonical cloud-deploy compose file and bound the unused auth port | Security, Infra, Docker |
github.com/vijayamsand/PyChem-Pro • Open Source
Refactored a shared discrete-calculation module used as a molecular simulation force field, replacing direct private-field access with a public accessor method.
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Node.js • Redis • WebSockets • PostgreSQL • Docker Real-time concurrent auction system with Redis atomic operations for race-condition-safe bid validation. Redis Pub/Sub for live bid broadcasting, sorted sets for leaderboard state management. Key Engineering: SETNX atomic budget checks, 50-concurrent-bid stress testing, WebSocket reconnect logic, Docker Compose deployment. |
Python • FastAPI • MQL5 • Supabase • Docker Custom Native TCP Bridge (Python ↔ MetaTrader 5) using persistent buffers and newline-delimited packet framing. Processes 1,000–3,000 ticks/minute with zero partial-read errors. Key Engineering: μ+1.5σ statistical regime detector, μ+4σ Density Shield black swan filter, fault-tolerant Supabase PostgreSQL persistence with in-memory fallback, 10-second MT5 position sync protocol. |
10 merged pull requests into InsForge • Active contributor to Apicurio Registry • Selected Contributor — GirlScript Summer of Code 2026 • Amazon SDE-I Online Assessment — Invited via Amazon University Talent Acquisition
Open to backend engineering internships and open-source collaborations.
Backend Infrastructure Engineer • Node.js • TypeScript • Java • PostgreSQL • Redis
© 2026 Sudarshan Patil. All rights reserved.