Backend Engineer

Christian Kiyong

Building systems at Sentryk

Building systems that operate under real-world constraints.

Focused on logistics, automation, and operational reliability—designed for low bandwidth, real-time coordination, and imperfect environments.

Handling availability, proximity, and multi-actor coordination in time-sensitive systems.

Availability

Operating under unreliable connectivity

Proximity

Location-aware coordination

Multi-actor

Concurrent operations and state

Real-time blood donation coordination system

Connecting hospitals and donors to reduce delays in emergency blood access.

Inventory, sales tracking, and operational visibility

Enabling business owners to track stock, verify sales, and operate reliably under power and connectivity constraints.

Academic reporting and workflow system

Simplifying report generation and administrative processes in resource-constrained schools.

I approach system design using a structured model:

Who can act within the system

What data persists

What transformations are allowed

What must always hold true

This helps me design systems that remain reliable under real-world conditions.

I focus on building systems that solve real problems and operate under constraints.

My work centers around logistics, coordination, and automation—especially in environments where reliability is not guaranteed.

I'm comfortable engaging directly with users, understanding their problems, and translating those into working systems.

Contributed to open-source projects by improving features, fixing issues, and working within existing codebases.