About Hi, I'm Brian

Building Scalable Systems That Deliver Results

Senior Software Engineer with 6+ years specializing in high-performance backend systems. I architect solutions that balance technical excellence with real-world business needs, from banking infrastructure to e-commerce platforms handling millions of transactions.

Brian Reynald at work

How I Got Here

My journey began in banking systems at BCA, where I progressed from IT Trainee to Senior Engineer in just six months. Seeking greater technical challenges, I transitioned to Tokopedia's logistics platform, then helped migrate these systems to ByteDance post-acquisition. Each step has deepened my expertise in building resilient, large-scale architectures.

My Engineering Principles

Performance First

I optimize for speed and efficiency at every layer - from database queries to API responses. My route analysis algorithms improved delivery predictions by 15%, and query optimizations reduced processing times by 35%.

Future-Proof Design

I build systems that evolve gracefully. At Tokopedia, I designed logistics workflows that seamlessly integrated with ByteDance's infrastructure post-acquisition with zero downtime.

Real-World Impact

Technology should solve concrete business problems. My shipping fee reconciliation tool reduced monthly losses by 70%, while high-value insurance features generated IDR 60M revenue in 3 months.

Continuous Learning

I actively explore AI/ML and blockchain applications. Certified in Deep Learning by DeepLearning.AI, I experiment with these technologies to create smarter, more secure systems.

Why Work With Me

I bring rare dual expertise in both stable financial systems (BCA) and hyper-growth e-commerce (Tokopedia/ByteDance). This lets me bridge the gap between rock-solid reliability and rapid innovation. Whether optimizing legacy systems or building new platforms from scratch, I deliver solutions that stand the test of scale.

My technical leadership extends beyond code - I define real-life test cases that improve QA coverage, document systems for team knowledge sharing, and mentor junior engineers. The systems I build don't just work today; they're designed to keep working as requirements evolve.

Beyond Code

When not architecting backend systems, I contribute to open-source Go projects, explore AI applications in logistics, and prototype blockchain solutions for decentralized marketplaces. I believe the best engineers stay curious - my side projects often inform better approaches to professional challenges.