Independent developer · product builder

JozefPodhajecky

I build web apps and games.

Financial tools, document workflows, live audio and interactive 3D — from a first prototype to deployment.

Web appsAI workflowsInteractive 3DGames
Let’s talk about your projectExplore the work
Jozef Podhajecky wearing traditional Korean clothing in front of a palace
Independent developer.
Web apps
Games
3D
Selected work below
Slovakia · 2026
01 / Web apps

Web apps.
Workflows.

Financial software, internal tools and customer-facing web experiences.

Featured product / 01Independent product

FINEXUS

AI-native
financial operations.

AI proposes.
You decide.

A financial workspace for documents, accounting and multiple companies. Less repetitive work, with human judgment at the centre.

Documents.
With context.

Identify the document, extract its information and keep it connected to the right company and original source.

A proposal.
Not a black box.

Prepare accounting suggestions using company-specific rules. Keep the reasoning available for review and correction.

Automation.
On your terms.

Review, adjust and approve. People keep the final decision, with the document history close at hand.

Solo developer · product engineeringDocuments / Accounting / Company context

Need an app for your business?

Let’s talk about it
dusicky.sk candle gallery interface with search and sample memorial cards
Virtual memorials · UI prototype

dusicky.sk

A virtual memorial experience with a searchable candle gallery, personal dedications and a step-by-step creation flow.

Candle galleryMemorial pages
Explore dusicky.sk

Internal applications.

In active use

02 / Document operations

HortiApp

Documents in.
Reviewed data out.

Document intake, classification and approvals connected to accounting workflows, including corrections and export.

What made it interesting

Accounting with AI agents. MCP tools connect agents to document context, accounting history and ledger lookups. They prepare typed accounting proposals that the backend validates, and can ask a human when more input is needed. Permanent changes to processing rules require human approval.

The difficult part is not just reading a document. It is handling mismatches, corrections and approvals without losing the trail from the original document to its export.

Solo developer · design & QA collaboration

03 / For Habitat for Humanity

Habitat

Local files.
One reporting model.

Financial reporting across a distributed organisation, bringing local accounting files into a shared, validated reporting model.

What made it interesting

Different account structures and currencies need explicit mapping and validation. The consolidated report must still lead back to the local source.

Solo developer · design & QA collaboration

02 / Games & VR

Games.
Audio. VR.

Live audio, multiplayer strategy and interactive 3D. Independent products alongside client work developed with design and QA.

Close-up of Karaoke Idol showing performance scoring, target notes and live pitch tracking
Browser audio · live prototype

Karaoke Idol

A browser-based singing app with microphone input, live pitch tracking and performance scoring. AI judging is planned.

Live prototypePitch trackingAI roadmap
Try Karaoke Idol
Pizza Shuffle gameplay close-up with eight pizzas, ingredient placements and individual order scores
Multiplayer strategy · 2–5 players

Pizza
Shuffle

A pizza-drafting game with private rooms, live turns and ingredient combos. The Go server validates every move and saves the game so players can reconnect.

React + PhaserGo + PostgreSQL
Play Pizza Shuffle
Macron campaign gameplay with a character riding through a low-poly city street
Campaign game · browser 3D

Macron
Campaign

Browser games developed for Emmanuel Macron’s 2022 presidential campaign.

Play campaign gameSolo developer · design & QA collaboration
VR Zoo: an elephant beside the interactive environment menu in a savannah landscape
Virtual reality · exploration

VR
Zoo

A virtual wildlife environment built for exploration in VR and 3D.

Solo developer · design & QA collaboration
03 / Services

From idea.To launch.

A new product or an existing codebase: I can build independently or collaborate with your team. AI speeds up implementation; I own the technical decisions, review and delivery.

Web apps & internal tools

Customer-facing products, dashboards and operational systems.

AI workflows & automation

Document processing, integrations and automation with human control.

Games & interactive 3D

Browser games, campaign experiences and small worlds to explore.

Tools I work with

Web interfaces
TypeScriptReactTailwind CSSViteHTML & CSS
Backend & data
C# / .NETASP.NET CoreGoPostgreSQLSQL ServerEF CoreFirebird
AI & automation
CodexAI agentsMCPOpenClawElevenLabs
Games & media
PhaserPixi.jsWeb Audio APIWebSocketsBrowser 3D / VR
Delivery & infrastructure
DockerAzureDokployGitS3-compatible storage
Testing & observability
PlaywrightVitestxUnitGrafanaOpenTelemetry
04 / Contact

Let’s build it.Properly.

Tell me what you want to build, where the project is now and what you need help with.

Independent developer · Based in Slovakia