Systems I've Built in Production

The Challenge

Build a system where money moves accurately every time — no duplicate processing, no missing transactions, and financial data that accountants can trust under failure and retries.

What I Built

• Event-driven workflows designed for idempotency and replay-safe processing
• Distributed transaction handling using Saga-style orchestration for failure recovery
• Real-time ledgering, reconciliation, and invoice automation
• Adapter-based integrations with external accounting systems

Impact

• 99.9% uptime — on financial transaction workflows
• 80% reduction — in client manual data entry
• 4× faster releases — moving from monthly to weekly deployments

The Challenge

Turn R&D prototypes into stable production services handling real customer traffic — with strict latency and reliability requirements.

What I Built

• High-performance APIs designed for predictable latency under load
• Caching strategies that reduced repeated computation and API pressure
• Secure partner integrations using OAuth-based authentication
• A scalable architecture supporting multiple downstream platforms

Impact

• p99 latency under 150ms
• 3× performance improvement — through caching and request optimization
• R&D to production — successful transition

The Challenge

Replace fragile legacy systems with maintainable platforms capable of handling complex institutional workflows — admissions, finance, HR, and library systems.

What I Built

• Fault-tolerant APIs for critical academic and administrative operations
• Integration with Koha Library systems handling 100K+ records
• Data migration pipelines designed to reduce human error and rollback risk
• Mentorship and technical guidance for a small engineering team

Impact

• 95% reduction — in data migration errors
• 10,000+ daily active users — across institutions
• Employee of the Year (2020) — recognition for technical leadership