I ship products, write stories, and finish races.
Across each, I'm drawn to clear premises, human stakes, and the discipline required to finish.
Three practices, one way of working.
I'm interested in what happens when a complex idea becomes usable, felt, or testable. Software, fiction, and endurance are different forms of the same practice: choose a clear premise, work through the constraints, and keep refining until it holds.
I'm Can Iseri, a founder and product builder working across consumer software, story, and sport. Through Katsuko, I'm building Scorch, HardBeet, and Aurora: products for fairer competition, caring without surveillance, and clearer travel decisions.
Katsuko is my independent studio. Alongside it, I continue to work in technical product leadership across regulated financial systems, building on more than a decade of experience in platform reengineering, analytics, and API integrations.
I work end to end: product strategy, UX, mobile and web engineering, backend systems, privacy and compliance boundaries, QA, and release preparation. The through-line is turning a complicated human problem into a focused experience people can understand and use.
The independent work you see here ships under Katsuko, a creative house for software, stories, and experiments. The legal entity is Katsuko, Inc.
Technical product leadership shaped in complex systems, then carried into independent software, stories, and experiments.
More than a decade across financial technology, risk platforms, analytics, and APIs taught me to turn ambiguity, constraints, and high-stakes workflows into products people can understand and trust.
Through Katsuko, I stay close to the full arc: research, product direction, UX, engineering, privacy boundaries, testing, and release readiness.
Software, fiction, and endurance all ask for the same things: a clear premise, respect for constraints, honest feedback, and the patience to keep refining.
Independent products designed and built under Katsuko, each centered on a sharp user problem and an honest product promise.
When an evaluator discovers a frontier model translating concepts no human culture has ever named, she must decide what version of humanity to show whatever may be listening on the other side. The Receiver is a story about first contact through machines. It asks whether authenticity, performance, and our capacity for repair can ever be separated.
A speculative framework that imagines civilizations as living systems whose mature intelligences create self-models: models that might one day become comparable, translatable, or receivable across worlds.
I'm a marathoner drawn to endurance: preparing patiently, adapting honestly, and returning to the work. Completing the World Marathon Majors is a long-term ambition, but the practice matters more to me than broadcasting a results sheet.
Running turns progress into something tangible: accumulated over time, one deliberate effort at a time.
That interest led to fair-start racing, with staggered starts designed to give runners at different paces a meaningful race on the same route.
The same habits shape my products and writing: stay curious, test honestly, recover, and keep refining.
If a product, story, or idea here connects with something you're thinking about, send a note.