Quality over Quantity.
Depth over Surface.
We don't just show screenshots of pretty UIs. We open the hood and explain why we built it, how it scales, and the trade-offs we made.
High-Throughput Fintech Pipeline
Stockbit & Kredivo Group
Result / Impact
Reduced sync latency significantly. Increased system throughput to securely process 1 million monthly trades with minimal infrastructure cost.
Business Context
A growing investment and financial services platform (handling 1 million monthly trade data) struggled with data synchronization delays. Transactions and portfolio balances were delayed during high concurrency.
The Real Problem
The existing systems relied on older polling mechanisms and locked the primary database for aggregations. It wasn't designed for extreme high-concurrency event streaming.
Technical Approach & Architecture
Decoupled the reporting engine from the core transactional service. Implemented an event-driven architecture using Kafka and Elixir/Phoenix, allowing real-time balance updates without database locks.
Scaling EdTech & Assessment Platform
Quipper & Kobi Education
Result / Impact
Achieved 99.99% uptime during peak seasons. Improved overall frontend performance by 40% and SEO by 30%.
Business Context
During peak exam seasons, educational platforms often experience severe slowdowns. Media streaming buffers continuously, and heavy assessments time out.
The Real Problem
The backend was handling media streaming and API requests simultaneously, while lack of aggressive caching caused excessive database hits on static assessment configurations.
Technical Approach & Architecture
Migrated video delivery to a dedicated CDN. Implemented aggressive Redis caching for read-heavy assessment questions, and offloaded submission processing to background queues (AWS SQS), while rebuilding the frontend architecture in Next.js for speed.
Real Estate Marketplace Optimization
99.co & Rumah123
Result / Impact
Achieved a 30% increase in SEO performance, a 25% enhancement in website loading speed, and significantly boosted mobile conversion rates.
Business Context
One of the largest property marketplaces in Indonesia and Singapore needed to dominate organic search rankings while providing a lightning-fast experience for mobile users.
The Real Problem
Legacy frontend code was bloated, negatively impacting Core Web Vitals, causing slow First Contentful Paint (FCP) and ultimately hurting Google search rankings.
Technical Approach & Architecture
Pioneered a full rewrite utilizing React.js, TypeScript, and Next.js. Initiated a strict mobile-first engineering strategy and implemented meticulous unit-testing to prevent regressions.
Bank Partner Integrations Engine
Mekari (Jurnal)
Result / Impact
Successfully launched automated bank feed integrations with 4 major national banks, saving users thousands of hours in manual data entry.
Business Context
A leading ERP and accounting software required automated bank feed integrations to let businesses reconcile transactions automatically without manual CSV uploads.
The Real Problem
Each bank partner (BCA, BNI, CIMB, Mandiri) had vastly different API contracts, authentication mechanisms, and rate limits, making a unified integration highly complex.
Technical Approach & Architecture
Designed a centralized, scalable integration layer (Cashlink Bankfeeds). Created robust adapters for each bank, implementing smart retry mechanisms and secure credential management.