Aesthetic craft meets Technical precision.

Matthew Kolnicki — Software engineer working at the intersection of AI and modern web development. I care about craft, clarity, and shipping work that holds up.

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FinTechSvelteKitDataViz

Aether Interface

A design exploration of what a modern trading terminal looks like built with Svelte's reactive primitives.

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Idle Running Done Error

Data EngineeringOrchestrationBackend

Pipeline Orchestrator

Visualizing data pipeline execution — DAG scheduling, fan-out parallelism, failure recovery, and throughput monitoring.

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EVENT LOG

N0 elected leader — Term 1

Leader sending heartbeats to all followers

Leader Follower Candidate Down

Distributed SystemsBackendAlgorithms

Raft Consensus

An interactive visualization of the Raft distributed consensus protocol — leader election, heartbeats, and fault tolerance.

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Mode attract

Particles 96 Connect Distance 150 Attraction 0.08 Speed 1.0x

svelteanimationcreative-coding

Interactive Particle Networks

Building a mouse-reactive particle network animation with Svelte 5 and SVG — velocity-based physics, spatial hashing, and touch support.

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oopdesign-patternsjavascript

Inheritance as a Useful Abstraction

Inheritance gets a bad rap. Here's a concrete example where replacing procedural branching with a class hierarchy makes code cleaner, safer, and easier to extend.

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