Software engineer / AI systems / Unity craft

AlekJałtuszyk

Building products where intelligence, behavior, and a little useful pressure meet.

Alek Jałtuszyk

I build products where intelligence, behaviour, and a little useful pressure meet.

Years of Unity engineering, a stretch as a core contractor on an AI text-to-game startup, and now five apps of my own on iOS: PlanKept, OverLit, Voice of Self, Take Me Somewhere, and AudioChoices.

The apps How I got here

Five iPhone apps built and shipped All five are live on the App Store.
2025→26 core contractor at Roam AI Player mechanics, enemy AI, networking, physics and world-building on a text-to-game startup.
5★ Unity assets on the Asset Store Procedural placement systems and VR-oriented frameworks, used by thousands of developers.
7c max boulder grade Two regional wins, plus a one-arm pull-up and a front lever.

The core stack right now

Swift & SwiftUI
Unity
C#
Kotlin Multiplatform
Python
AI product systems

The detail is under core skills, and the apps themselves are in the directory or waiting at the bottom of this page.

Selected history

A few milestones behind how I work and what I build today.

2022-2025

Unity asset development

Unity programmer and tool builder

Before the current AI-heavy phase, I spent years building Unity assets and frameworks that reached a large audience of developers.

Created 5-star Unity assets, including tools for procedural level design and physics-reactive VR NPCs.
Learned how to package advanced systems so they are understandable, documented, and genuinely useful.
Turned the Asset Store from a learning platform into a profitable technical business with strong user feedback.

2025-2026

Roam AI text-to-game startup

Core gameplay and AI systems contractor

I joined Roam as a core contractor on a small team building a text-to-game experience at the level where gameplay engineering and AI systems start overlapping.

Built player mechanics, enemy AI, networking, physics interactions, and world-building systems with the team.
Worked closely with teammates across gameplay development, internal tooling, product context, and urgent AI-driven problem solving.

2026-now

Building 5 iPhone apps

Independent iOS product builder

I developed five separate iPhone apps: PlanKept, OverLit, Voice of Self, Take Me Somewhere, and AudioChoices. All five are live on the App Store.

Voice of Self Voice-first reflection app.
- Built staged AI analysis and reflection memory for recurring worries, resolved worries, and personal growth.
- Built managed subscription services and account flows.
- Designed voice-first UX for capturing, processing, and reviewing reflections.
PlanKept Plan-enforcement and app-blocker product.
- Shaped careful UX for reminders, app limits or blocks, recurrence, quotas, and proof review.
- Solved local image-processing and memory-management issues for proof review.
- Worked on on-device model handling, durable state machines, and Apple/iOS integrations.
OverLit Fast reflex arcade game.
- Designed easy-to-learn, hard-to-master gameplay around simple mechanics with large gameplay impact.
- Tuned variable difficulty, pressure states, level pacing, and easing so runs stayed fun without becoming too easy or too punishing.
- Built an ad-supported monetization path.
Take Me Somewhere Route-discovery app for spontaneous outings.
- Shipped a smooth UX around quick decisions and time-boxed local exploration.
- Built Compass Mode and a low-friction route-discovery flow.
AudioChoices Interactive 'choose your story' audiobook app.
- Designed branching story trees where Yes or No choices open new paths through a book.
- Built choice input that works by tapping the screen or nodding with AirPods.
- Kept listening progress, settings, and the self-declared age on the device, with no sign-up and no analytics.

Alek Jałtuszyk bouldering on an overhanging rock wall.

Core skills

The core stack behind my work right now, with Unity still carrying real weight.

Click any skill card to expand it.

Unity is still a major part of my work, from polished developer tools to fast-moving gameplay systems.

Built highly rated Unity assets used by thousands of developers, including procedural placement systems and VR-oriented frameworks.
Contributed across player mechanics, enemy AI, networking, physics, shaders, and world-building as part of a small text-to-game startup team.
Care deeply about making complex systems feel intuitive, reusable, and pleasant to work with.

Alek Games Roam AI

C# is the language I return to for real production systems: gameplay logic, internal frameworks, and integrations that need to hold up.

Used C# as the backbone for production Unity tools, interactive systems, and gameplay architecture.
Integrated third-party systems into internal frameworks without breaking performance or workflow.
Prefer structural, modular designs that stay understandable as projects become more ambitious.

Alek Games Roam AI

My AI work is strongest when the model output becomes real product state: remembered context, validated structure, and useful behavior inside the app.

Built Voice of Self around reflection memory: recurring worries, resolved worries, personal growth, and AI outputs that remain useful over time.
Built PlanKept flows where AI-assisted plan creation becomes durable reminders, app rules, quotas, and proof-review state.
Prefer schema-validated outputs, deterministic persistence, and product-specific memory over loose chatbot text.

Current products Roam AI

Climbing is a big part of how I stay sharp outside of software. My max boulder grade is 7c, I like slopers, and I have won two regional competitions alongside many more podium finishes.

Max boulder grade: 7c.
Preferred climbing style: slopers.
Won two regional competitions and placed on the podium in many others.
Strength achievements include a one-arm pull-up, a front lever, and 42 pull-ups in a row.

What I am building