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.
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.
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.
CRM Course endorsed by PayPal (Feb 2023 - April 2023)
Android Development Course (Aug 2022 - Sept 2022)
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 ]→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 ]→Patched critical SQL Injection in core lending engine; resolved Liquibase migration failures achieving 100% green CI across PostgreSQL, MariaDB, MySQL.
[ View Patch on GitHub ]→Secured Email and SMS Read Services by transitioning from string concatenation to Prepared Statements across the Apache Fineract platform.
[ View Patch on GitHub ]→Active contributor to the Mifos X (OpenMF) Angular web application, optimizing UI layers for micro-finance workflows.
[ View Patch on GitHub ]→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.
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.
A fully responsive Razorpay homepage clone showcasing layout skills, responsive design, and modern UI.
Real-time messaging app built in Kotlin using Firebase Realtime Database and Authentication. Clean UI, group chat.
Console-based Java project that simulates ticket reservations with seat allocation, cancellation, and queue handling.
Ready to architect something massive? My inbox is always open for robust system builds and deep-tech collaborations.
>>Engineered withSHEER_SELF_DISCIPLINEbyMOHAMMED SAIFULHUQ