root@saifulhuq:~$             

MohammedSaifulhuq /Sai.nux/

I architect high-performance, production-grade distributed systems —no shortcuts, no sugarcoating,just battle-tested code built to scale.

Somewhere between a switchMap and a cold brew is where the magic happens.
I don't just write code — I engineer systems that communicate, perform, and endure.

Scroll

// Core Engine & Specs

# The Architecture

I'm Mohammed Saifulhuq — Founder of DLQ Revive (open-source Kafka recovery), Apache Fineract contributor, and Computer Science graduate (B.Sc., 2023). I genuinely believe the best systems are born from curiosity, not convenience.

My path into tech wasn't linear — and honestly, that's what makes it worth telling. I began in revenue cycle management as an AR Caller, decoding complex claim workflows and payer logic before pivoting entirely into software development through sheer self-discipline, late-night builds, and the kind of mentorship that changes trajectories. I didn't wait for the perfect opportunity — I built one.

From architecting production-safe Kafka consumers and idempotent redrives to patching SQL injection vulnerabilities in a globally deployed fintech engine, I'm driven by one thing: building real solutions to real problems, at production scale. If there's a hard problem on the table, consider me already at the whiteboard.

# Tech Payload

Java 17
Spring Boot 3
Apache Kafka
Microservices
RESTful APIs
Angular 13+
TypeScript
RxJS
JavaScript
HTML5
CSS3
PostgreSQL
MySQL
Liquibase
JPA/Hibernate
JUnit 5
Mockito
Docker
GitHub Actions
Git
Kotlin
Jetpack Compose
JSONata
Linux
Gradle
Maven

# Operating Directive

I don't settle for surface-level fluency with frameworks — I push until I understand why they work, not just how to use them.

That means founding DLQ Revive to solve a zero-tooling gap in Kafka dead-letter queue recovery — architecting assign()+seek() consumers, idempotency guards on UNIQUE(topic, partition, offset), and JSONata-only transforms to eliminate RCE risk. It means patching SQL injection vulnerabilities in Apache Fineract (PR #5465) and designing system-wide idempotency interceptors for GSoC 2026. It means reducing Angular bundle loads by 40% with OnPush change detection and exhaustMap pipelines that eliminate race conditions before they ever reach production.

Performance isn't a bonus feature — it's the baseline. Every millisecond of latency, every wasted memory allocation, every redundant API call is a problem worth solving. I build with that mindset baked in from line one.

~ Service Logs

Founder & Solo Engineer

DLQ Revive — Open Source Kafka RecoveryApril 2026 – Present
  • >Validated zero-tooling gap in Kafka DLQ schema recovery via r/apachekafka community research; architected production-safe consumer using assign()+seek() to prevent partition stealing from live consumers.
  • >Engineered idempotency guard on UNIQUE(topic, partition, offset) with SELECT-before-produce semantics — pod restarts during bulk redrives cannot double-process financial messages; JSONata-only transforms eliminate RCE risk.
  • >Shipped full open-source core: paginated DLQ reader, schema transformation engine, PostgreSQL audit trail, GitHub Actions CI; MIT licensed with public contributor roadmap.

Open Source Contributor

Apache Fineract (Core Banking)January 2026 – Present
  • >Patched critical SQL Injection in core lending engine; PR #5465 resolved Liquibase migration failures achieving 100% green CI across PostgreSQL, MariaDB, MySQL. Coordinated with PMC members on security roadmap.
  • >Architecting system-wide transaction idempotency interceptor (FINERACT-2485): OncePerRequestFilter + PostgreSQL INSERT ... ON CONFLICT DO NOTHING atomic locks replacing exception-driven control flow.

Software Developer

Muthu Soft LabsApril 2025 – March 2026
  • >Reduced Angular initial bundle load by 40% via OnPush change detection and lazy-loaded modules; eliminated API race conditions using RxJS exhaustMap/switchMap pipelines across distributed Spring Boot services.
  • >Led legacy Angular component migration cutting technical debt; resolved production-critical distributed system bugs directly with stakeholders; enforced SOLID principles through peer code reviews.

Freelance Software Developer

Independent Contractor (Freelancer.com)June 2023 – March 2025
  • >Delivered Android applications end-to-end for international clients: UI with Jetpack Compose, state management via ViewModel, REST API integration, and iterative feature delivery from requirement gathering to release.

Associate, Data Operations

Vee TechnologiesJuly 2024 – March 2025
  • >Managed revenue cycle operations while self-studying Java and distributed systems concurrently; transitioned fully into software engineering within 8 months.

~ Academics

B.Sc. in Computer Science

June 2020 – April 2023
Dhanraj Baid Jain CollegeCGPA: 8.52 / 10

~ Certifications

ICT by PayPal

CRM Course endorsed by PayPal (Feb 2023 - April 2023)

DLK Career Dev

Android Development Course (Aug 2022 - Sept 2022)

// Upstream Contributions

DLQ-REVIVEOpen Source Founder

Kafka DLQ Recovery Tool

Founded and built open-source Kafka Dead-Letter Queue recovery tool. Production-safe consumer using assign()+seek(), idempotent redrives with UNIQUE(topic, partition, offset), JSONata transforms, PostgreSQL audit trail.

[ View Patch on GitHub ]
FINERACT-2485Architecture Proposal

GSoC 2026 — Command Idempotency

Proposed O(1) OncePerRequestFilter replacing exception-based idempotency for system-wide transaction safety. Coordinated with PMC Chair under architecture epic FINERACT-2169.

[ View Patch on GitHub ]
PR #5465Security Hardening

SQL Injection Security Patch

Patched critical SQL Injection in core lending engine; resolved Liquibase migration failures achieving 100% green CI across PostgreSQL, MariaDB, MySQL.

[ View Patch on GitHub ]
FINERACT-2461/59Security Hardening

Email & SMS Security

Secured Email and SMS Read Services by transitioning from string concatenation to Prepared Statements across the Apache Fineract platform.

[ View Patch on GitHub ]
Mifos X WebUI Optimization

Angular Frontend Contributor

Active contributor to the Mifos X (OpenMF) Angular web application, optimizing UI layers for micro-finance workflows.

[ View Patch on GitHub ]

< Built Executables >

//Project_01

DLQ Revive

Open-source Kafka Dead-Letter Queue recovery tool. Production-safe consumer with assign()+seek(), idempotent redrives, JSONata transforms, paginated DLQ reader, PostgreSQL audit trail, and GitHub Actions CI. MIT licensed.

Java 17 / Spring Boot 3 / Apache Kafka / PostgreSQL
[ GitHub Repo ]
//Project_02

Fineract GSoC 2026

System-wide command idempotency interceptor for Apache Fineract. Proposed O(1) OncePerRequestFilter replacing exception-based idempotency, coordinated with PMC Chair as FINERACT-2485 sub-task.

Java 17 / Spring Boot 3 / PostgreSQL
[ JIRA Ticket ]
//Project_03

Razorpay Clone

A fully responsive Razorpay homepage clone showcasing layout skills, responsive design, and modern UI.

HTML / Tailwind CSS
[ Live Demo ]
//Project_04

Chat App

Real-time messaging app built in Kotlin using Firebase Realtime Database and Authentication. Clean UI, group chat.

Kotlin / Firebase
[ GitHub Repo ]
//Project_05

Railway Reservation System

Console-based Java project that simulates ticket reservations with seat allocation, cancellation, and queue handling.

Drop a
Message

Ready to architect something massive? My inbox is always open for robust system builds and deep-tech collaborations.

SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ   SAIFULHUQ
///

>>Engineered withSHEER_SELF_DISCIPLINEbyMOHAMMED SAIFULHUQ

STATUS: PRODUCTION_READY
BUILD: v2.0.0
Export_Full_Payload (Resume)