Does Start4AI build complete software from scratch, or just integrate AI?

Both. We build complete systems from scratch — ERP, CRM, SaaS, web and mobile apps — and, separately, we integrate AI into existing systems. These are two distinct services, not one.

Who owns the code and the data?

You do. The repository, the infrastructure and the data remain your property, and at the end you get full documentation and access to everything.

How long does a custom system take?

A first working module usually appears in 1–2 weeks, and a system usable in production in 4–12 weeks, depending on the number of modules and integrations.

Can we start small and expand later?

Yes, that's the recommended approach. We build the highest-impact module first, put it into production, then expand based on what the team actually uses.

Do you work alongside internal technical teams?

Yes. We can own the architecture and full delivery, or work alongside your internal team, with shared code review and a progressive handover.

Custom Software

Custom software development in Romania

We build complete software systems — ERP, CRM, SaaS platforms, web and mobile apps — designed around your actual process, with AI wired in wherever it produces a measurable gain.

At a glance

Start4AI is an AI development and custom software company based in Cluj-Napoca, Romania. We design and build complete software systems from scratch: ERPs, CRMs, SaaS platforms, web and mobile apps, plus AI agents and automations integrated into the same system. A project runs through Scope, a working prototype, weekly iterations and go-live, typically in 4–12 weeks.

4–12

weeks to production

days to the first working prototype

days guarantee after launch

What custom software means at Start4AI

We do not configure a template or resell licenses. We start from your workflow, model the data, then build the application that runs that workflow. AI goes in where it removes manual work — data extraction, summaries, alerts, conversational agents — not as a marketing add-on.

Internal systems: ERP, CRM, operational tools, management dashboards
Products for your customers: SaaS platforms, portals, marketplaces, booking apps
Web and mobile apps connected to the same database and the same business rules
Native AI layers: agents, document processing, semantic search, automated reporting

When custom software is worth it, and when it isn't

Custom makes sense when your process is the competitive advantage, when no off-the-shelf product covers the combination of modules you need, or when you're paying licenses for 20% of a suite. If an existing SaaS covers 90% of the need at a significantly lower cost, we tell you that before starting.

Stack and way of working

We work engineering-first: our own repository, code review, separate staging and production environments, monitoring and documentation. Common technologies: React, TypeScript, Node.js, Python, PostgreSQL, Supabase, plus AI models from established providers. The code and infrastructure stay yours.

How we build a custom system

01Discovery: processes, roles, existing systems and what still happens manually today
02Scope: data model, modules, integrations, risks and acceptance criteria
03Working prototype in 7 days — a real flow, not mockups
04Build module by module, with a weekly demo and access to the staging environment
05Go-live: data migration, roles and permissions, monitoring, backups
06Handover: documentation, team training, 30 days of bug warranty

A concrete example from our portfolio

MiniCity — custom ERP for an entertainment venue

Problem: Operations were spread across spreadsheets and separate apps, and reporting was done by hand.
Solution: We built a web ERP from scratch with modules for projects, resources, finance, reporting, and an AI layer for summaries and alerts.
Result: One centralized system with 15+ working modules, delivered in 4–8 weeks.

Read the MiniCity case study

How the budget is structured

Discovery + Scope: Fixed price, 1–2 weeks, documented deliverable
Build by module: Invoiced per accepted stage, not per vague hour
Hosting and external services: Transparent, paid directly by you if you prefer
Maintenance and evolution: Optional monthly package, no mandatory contract

We do not start building before the modules and acceptance criteria are written down.

When we do NOT recommend custom software

A standard product covers almost everything you need, and the gap doesn't justify a project
There is nobody in the company who can decide and answer questions during the project
The process changes weekly and nobody can describe it consistently
The budget covers only the build, with nothing left for running and maintaining it

Frequently asked questions

Does Start4AI build complete software from scratch, or just integrate AI?: Both. We build complete systems from scratch — ERP, CRM, SaaS, web and mobile apps — and, separately, we integrate AI into existing systems. These are two distinct services, not one.
Who owns the code and the data?: You do. The repository, the infrastructure and the data remain your property, and at the end you get full documentation and access to everything.
How long does a custom system take?: A first working module usually appears in 1–2 weeks, and a system usable in production in 4–12 weeks, depending on the number of modules and integrations.
Can we start small and expand later?: Yes, that's the recommended approach. We build the highest-impact module first, put it into production, then expand based on what the team actually uses.
Do you work alongside internal technical teams?: Yes. We can own the architecture and full delivery, or work alongside your internal team, with shared code review and a progressive handover.

Have a process that doesn't fit any off-the-shelf software?

Describe your workflow and we'll tell you within one business day whether it's worth building custom, what modules it would have, and where we'd start.

Get project plan See delivered projects