Depth where it counts.

Our fintech work is rooted in core banking integration — specifically T24/Temenos environments where we've built middleware layers that bridge legacy banking infrastructure with modern API-driven services. We understand the constraints: batch processing windows, SOA message formats, and the zero-tolerance-for-error discipline that banking demands.

We've designed and maintained USSD mobile banking applications that handle millions of monthly sessions across East African carriers. The technical challenge isn't the USSD protocol itself — it's building reliable session management across inherently unreliable mobile networks. Our approach uses Redis-backed session caching with aggressive TTL management, graceful timeout handling, and carrier-specific quirk isolation so that a session dropped by Safaricom doesn't corrupt state for an Airtel user.

On the payment orchestration side, we've built M-Pesa integration layers that handle STK Push callbacks, B2C disbursements, and reconciliation workflows. We've implemented ESB middleware patterns for institutions that need to route transactions across multiple backends — core banking, card processors, and mobile money — with full audit trails and real-time alerting for anomalies.

Our healthtech work focuses on telepathology — specifically, building Whole Slide Imaging (WSI) platforms that enable pathologists to make diagnostic decisions on digitized tissue samples viewed remotely in a web browser. This is not a typical web application. A single WSI file can exceed 2GB, containing gigapixel-resolution imagery that must be navigated smoothly with sub-second tile loading at any zoom level.

We've built viewers using OpenSeadragon with custom tile source adapters, implementing Deep Zoom Image (DZI) pyramid generation pipelines that convert vendor-specific slide formats into web-servable tile hierarchies. The rendering pipeline handles multi-resolution tile prefetching, viewport prediction, and aggressive caching strategies to deliver a fluid experience even on moderate bandwidth connections — critical for deployment in regions where pathologist shortages make remote diagnostics a necessity, not a convenience.

On the compliance side, our architectures address DICOM standards for medical imaging metadata, HIPAA-grade access controls, and data sovereignty requirements for jurisdictions that mandate in-country storage of patient data. The collaboration layer enables multiple pathologists to annotate and discuss cases in real-time with synchronized viewports.

Our e-commerce work goes beyond storefront templates. We build transactional platforms where the payment integration isn't an afterthought — it's the core engineering challenge. In markets where M-Pesa is the primary payment method, the entire checkout flow must be designed around STK Push UX patterns, callback reliability, and reconciliation edge cases that card-centric platforms never encounter.

We've built subscription billing engines that handle tiered pricing, promotional periods, grace windows, and automated dunning — all integrated with M-Pesa for recurring collections. On the marketplace side, we've engineered deal aggregation platforms that ingest offers from multiple vendors, normalize pricing, and surface real-time availability with inventory management that prevents overselling.

The backend APIs are designed for throughput — handling concurrent purchase requests, inventory locks, and payment confirmations with optimistic concurrency controls and idempotent transaction processing. When a flash sale drives 10x normal traffic, the system degrades gracefully rather than dropping transactions.