AC
Aditya Chavan SYS // BACKEND ARCH
Pune, IN · Systems & Backend Engineering
00 // SYSTEMS & BACKEND

Aditya Chavan.
Building simple, reliable systems.

Computer Science undergraduate specializing in systems programming and backend development. Built a complete in-memory Unix-like virtual file system in C++ featuring custom inode tables and seven system calls. Strong foundation in Linux internals, C/C++, Java/Spring Boot, and clean layered architecture.

CORE TENET // "Brute force the logic first. Optimize it later."
LATEST DISPATCH → "Simplicity, Systems, and Engineering Discipline"
View Systems Architecture ↓ Read Blog (/blog) ↗ GitHub ↗ LinkedIn ↗ Resume.pdf ↗
01 // SELECTED ENGINEERING

Systems & Protocol Architecture.

Low-level primitives, custom protocol implementations, and production backends. Engineered for deterministic memory safety, concurrency, and high throughput.

SPEC 01 // KERNEL ARCHITECTURE FEB 2025

Customized Virtual File System (CVFS)

C++ · Linux Internals · Inode Management · Custom Shell
// MEMORY LAYOUT & UFDT DEREFERENCE SCHEMATIC
[UFDT Index] ---> [File Table (Offset Ptr)] ---> [Inode Table] | +-- Size & Type +-- Perms (R/W/RW) +-- [1024B Block Buffer]
Specification:
In-memory UNIX UFS-modeled file system built from scratch featuring custom inode tables, User File Descriptor Tables (UFDT), and precise byte-offset tracking.
Execution:
Engineered 7 core system calls (creat, open, read, write, unlink, stat, ls) with strict permission handling, structured error codes, and a custom CLI shell.
C++17 / POSIX
github.com/aditya8242/CVFS ↗
SPEC 02 // NETWORKING PROTOCOL FEB 2026

Concurrent FTP Server

C · POSIX Sockets · Fork-per-Connection · Wire Protocol
// CONCURRENCY & WIRE PROTOCOL SEQUENCE
Client [RETR binary] ---> Master [Listen :2121] | +---> fork() Child [Isolated PID] +-- Send: "SIZE <bytes>\n" +-- Raw Byte Stream @ 4KB Buffer
Specification:
High-concurrency TCP file-transfer server utilizing a fork-per-connection architecture to serve parallel client downloads across isolated child processes.
Execution:
Designed a custom line-based wire protocol (filename request → size header → raw byte stream) over raw sockets with deterministic process isolation and graceful socket cleanup.
POSIX C / Sockets
github.com/aditya8242/FTP ↗
SPEC 03 // ENTERPRISE BACKEND JAN 2025

EduTrack — Enterprise Management Backend

Java · Spring Boot · MongoDB · Docker · Render PaaS
// LAYERED PIPELINE & CLOUD CONTAINERIZATION
REST API Request ---> [Controller Layer] | +---> [Service (Business Logic)] +---> [Mongo Repository] ---> Cloud Atlas
Specification:
Production RESTful API backend for academic course and student fee operations built on strict Controller–Service–Repository layered architecture.
Execution:
Containerized with Docker and deployed on Render with MongoDB Atlas (edutrack-3426.onrender.com), validating end-to-end CRUD integrity under concurrent client loads.
Java 17 / Spring Boot
Live API ↗ Repository ↗
SPEC 04 // BINARY ARCHIVER & CIPHER JUL 2026

IronVault — Binary File Archiver & Encryptor

Java · Swing GUI · Cryptography · Custom Headers
// BINARY ARCHIVE PACKING SPECIFICATION
[MAGIC: 0x495641] ---> [4B Meta Len] ---> [Header Records x N] | +---> [Repeating XOR Stream]
Specification:
Zero-dependency directory packer serializing 18+ file formats into a single binary archive using a custom header format and repeating XOR encryption.
Execution:
Supports 18 file formats including documents, images, source code, and media. Ships with a self-contained Swing GUI with zero external dependencies.
Java / Cryptography
github.com/aditya8242/IronVault ↗
SPEC 05 // DEFENSIVE AUTOMATION JAN 2025

EggRateBot — Daily Cloud Scraper & Notifier

Python · Telegram Bot API · BeautifulSoup4 · GitHub Actions
// DEFENSIVE SCRAPING & BROADCAST PIPELINE
Cron (Daily 06:00) ---> HTTP Fetch & HTML Parse | +---> [Valid Rates] ---> Telegram Bot Broadcast +---> [DOM Changed] ---> Fail Clean (No False Data)
Specification:
Defensive automated scraper replacing fragile daily manual checks with an autonomous, failure-aware notifier broadcasting wholesale rates via Telegram.
Execution:
Engineered to fail cleanly rather than transmit invalid data if upstream HTML tables change. Runs serverless via scheduled GitHub Actions cron jobs with zero operational cost.
Python / Actions Cron
Read Essay → Repository ↗
SPEC 06 // EMBEDDED COMPUTER VISION MAR 2025

FaceRecogESP — Edge Facial Biometrics

C++ · ESP32-CAM · Embedded Systems · FreeRTOS · Wi-Fi
// MICROCONTROLLER VISION PIPELINE
OV2640 Sensor ---> Framebuffer (PSRAM) ---> Face Detection / Recognition | +---> MJPEG Wi-Fi Stream (:80) +---> GPIO Hardware Trigger
Specification:
Real-time biometric facial detection and recognition pipeline running directly on a resource-constrained ESP32-CAM microcontroller.
Execution:
Optimized internal SRAM allocation using external PSRAM buffers, concurrent FreeRTOS tasks, and real-time MJPEG video streaming over local Wi-Fi.
C++ / ESP32 Hardware
github.com/aditya8242/FaceRecogESP ↗
SPEC 07 // DATA ACCESS & CLI DEC 2024

maKneeTrack — CLI Expense Engine

Java · JDBC · SQLite · 3-Layer Architecture
// LAYERED DATA ACCESS ARCHITECTURE
Console UI ---> [Service Layer] ---> [DAO Layer] | +---> SQLite (PreparedStatements)
Specification:
Console-based expense tracker built on strict 3-layer architecture separating presentation, business logic, and database persistence.
Execution:
Engineered secure CRUD persistence with JDBC and SQLite using parameterized queries to eliminate SQL injection and ensure transaction integrity.
Java / SQLite
github.com/aditya8242/maKneeTrack ↗
SPEC 08 // AUDIO ENGINE & WEB APIS NOV 2026

Basti Drift // Kaalya Raatri — Audio Lab & Studio

Web Audio API · MediaStream · Tailwind CSS · OpenDAW .dawproject
// AUDIO PIPELINE & LOW-LATENCY REHEARSAL SCHEMATIC
[Embedded Audio Data URI] ---> [Web Audio Context] ---> [Ambient Dynamic Shaders] | [Hardware Mic Input] --------> [MediaRecorder] -------> [Zero-Cloud .webm Take]
Specification:
Zero-dependency browser vocal studio and open-format trap audio lab. Integrates real-time teleprompter, tempo-synchronized ambient lighting, and cross-DAW portability.
Execution:
Engineered standalone HTML5 tracking booth with MediaStream microphone capture, tuned 808 sound design (C, D, F#), and vendor-neutral .dawproject container.
Web Audio / OpenDAW
Live Studio ↗ github.com/aditya8242/basti-drift-audio-lab ↗
02 // WORK & EXPERIENCE

Work Experience.

Building and shipping practical software directly for real business clients.

Brilliant Info Systems Pvt. Ltd.

Intern
Oct 2026 – Present · Kothrud, Pune

Capture customer requirements, support software demos and proposals, and maintain client records and market research across enterprise operations.

  • Capture customer requirements and communicate specifications to the technical team.
  • Support software solution demonstrations, product presentations, and technical proposals.
  • Structure client data, maintain internal records, and conduct market and competitor research.
  • Coordinate with internal teams across the software sales cycle.

Iron & Logic

Web Architect & Software Engineer
Aug 2026 – Present · Pune, India

Build web architecture and booking integrations for local Pune businesses; develop AI-integrated tooling for B2B lead generation.

  • Build high-performance web architecture and direct booking integrations for local Pune businesses.
  • Develop custom, AI-integrated internal tooling for B2B outreach and lead generation.
  • Focus on clean, native-feeling UIs, sub-400ms mobile speed, and reliable backend infrastructure.
03 // HARDWARE & SOFTWARE MATRIX

Technical Specification Sheet.

Comprehensive breakdown of systems engineering competencies, runtime tooling, and academic credentials.

SPECIFICATION FIELD SYSTEM ARCHITECTURE & ATTRIBUTES
01.0 Systems & Languages
C C++17 Java Python JavaScript Bash / Shell Linux / UNIX Internals Process Memory In-Memory Filesystems POSIX Sockets

Deep low-level focus on process isolation, system calls, pointer arithmetic, offset calculation, and deterministic operating system internals.

02.0 Backend & Data
Spring Boot REST APIs Layered Architecture PostgreSQL MongoDB MySQL SQLite JDBC Controller-Service-Repo

Modular service-oriented backend architecture, transactional persistence, strict boundary separation, and scalable cloud database integration.

03.0 Infrastructure & Tooling
Docker Git GitHub Actions CI/CD Vercel Cloudflare Vim Linux CLI Render PaaS IntelliJ IDEA

Containerized microservices, immutable deployments, terminal-first developer ergonomics, and automated delivery pipelines.

04.0 Open Source & Education
ccgargantua/ini (PR #24 Merged) Doxygen C Docs B.Sc. Computer Science (7.8 CGPA) Savitribai Phule Pune University Infosys PostgreSQL Dev Infosys Python Certified

Active open-source contributor to C library codebases. Savitribai Phule Pune University (2023–2026). Rigorous foundation in data structures, algorithms, and computing fundamentals.

04 // FIELD NOTES & ESSAYS

Engineering Dispatches.

Explore All Articles (/blog) →

Writing about software simplicity, open-source ownership, and defensive automation. Candid field notes from building and breaking systems.

ESSAY 01 // OPEN SOURCE OCT 2025 · 4 MIN READ

I Learned Open Source the Hard Way

By failing publicly · C / Doxygen · Maintainer Reality

A firsthand account of failing publicly in open source and learning the real value of ownership, correctness, and trust. What happens when an eager PR with unverified AI comments meets an uncompromising C maintainer.

Read Essay → /blog/learned-open-source-the-hard-way.html
ESSAY 02 // DEFENSIVE AUTOMATION 2025 · 4 MIN READ

Automating a Daily Task Instead of Repeating It

Replacing fragile manual work · Python · GitHub Actions

A small automation project that replaces repetitive daily work with a reliable, failure-aware system using Python and GitHub Actions cron jobs. Zero databases, zero babysitting.

Read Essay → /blog/automating-a-daily-task.html
ESSAY 03 // SYSTEMS DISCIPLINE 2026 · 3 MIN READ

Simplicity, Systems, and Engineering Discipline

Why good software is hard to mess up · Restraint · Terry Davis

Why junior engineers mistake complexity for intelligence, Terry Davis's timeless insight on engineering discipline, and three practical rules for building software that doesn't break at 2:00 AM.

Read Essay → /blog/simplicity-systems-discipline.html
aditya@arch-pune: ~ (tty1) — 80x24
aditya@arch-pune:~$