SOFTWARE ENGINEERING
Dave Quinn
Head of Software Engineering
Dave owns the engineering standard. What gets built, how it is reviewed and what is ready for production.
ABOUT JOYLO
Build and launch
your app with AI.
Joylo is an AI app builder for people with something to build, whether or not they can code. Turn your idea into a working app, keep improving it with AI, and launch it for real customers. You own the whole application.
Why we built JoyloWhy we built Joylo.
AI should help more people build businesses.
Not just help businesses employ fewer people.
AI lets people build working apps without first hiring a development team. More people can test an idea, launch a business or create a tool they need. As those apps grow, some owners will want experienced help with more complex work.
So we built a company around both: AI you can use to build and launch independently, and our own developers who can work on your app when you need a helping hand. As Joylo grows, we hire more of them. Deliberately.
Those people are here to understand your project, make considered decisions and take responsibility for the work you agree together. We are investing in a relationship that lasts as your app and business grow.
Why Joylo is different
from other AI app builders.
Expert help, built into your project.
As your business grows, you may want experienced help with a complex feature or a major update.
Joylo is the only AI app builder that puts its own in-house engineers directly in your project, with a 24-hour first-response SLA. No marketplace. No freelancer handoff. No quiet subcontracting.
With an outside developer, you first have to find the right person, arrange access and explain the project. With Joylo, you request help where you are already building. With your permission, our team reviews the code, project history and errors before your first conversation.
Inside your Joylo projectExplore how it works
01 / YOUR CHOICE
Request a developer
inside your project.
You can build and launch with AI. If you want a developer to take on a task, request optional Expert Assist inside your project.
In your projectEngage a developer
Your request authorises Joylo to review the project.
02 / BEFORE WE TALK
We review your code,
history and errors.
Our team can examine the context already in Joylo before your first conversation.
- Your app's codeHow the app is built and connected.
- Project historyWhat you have been building and changing.
- Error messagesWhere problems have shown up.
03 / YOUR FIRST CONVERSATION
Agree the work
with a Joylo developer.
A developer from Joylo's own team discusses what needs attention and the work you want them to take on.
You bring the goal.
We bring the project context.
Explore Expert Assist We bring the project context.
Less time reconstructing what happened. More time deciding what to do about it.
Our own developers. Working directly in your project.
First response within 24 hours. Optional, paid Expert Assist.
Less time finding help.
More time building your app.
You are dealing with the company behind the product, with your project context already available. The conversation starts with what you need, and a Joylo developer takes responsibility for the work you agree together.
Where we came from.
18 years of building and running software businesses depend on.
Joylo is funded and staffed by our sister company, HST Solutions, an Irish software consultancy with eighteen years of building and running production systems. Its client base is weighted towards financial services, where an outage is a regulatory event rather than an inconvenience.
We have spent those years on the other end of the phone at seven in the morning. It teaches you that the software only starts to matter once somebody depends on it. Our responsibility has always continued after launch.
Those delivery standards are built into Joylo. App checks before you launch. A named engineer when you choose help. A written response time. The refusal to hand your project to a stranger. You get the experience of a team that has had to keep software working for other people.
You work with Joylo. Your relationship and contract are with Joylo Limited.
The experience behind Joylo
HST Solutions, our sister company.
Figures refer to the wider group.
- Years HST has built and run software
- 18years
- People across the group
- ~140people
- Countries where the team works
- 3countries
Based in Ireland. Working together across:
- Ireland
- India
- Kenya
How Joylo and HST fit together
Joylo is a young company. The delivery organisation behind it is not. Joylo draws its engineers, and the standards they work to, from HST Solutions. HST funds and staffs Joylo, while your contract is with Joylo Limited.
HST Solutions is ISO 27001 certified, DORA aligned and GDPR compliant. These credentials belong to HST Solutions and reflect the requirements of its financial-services clients. Joylo's company details and data-processing arrangements are listed below.
The kind of software behind that experience
HST's experience spans the everyday software a business runs on and systems used in regulated industries. Its client base is weighted towards financial services.
- Small business apps
- CRM, ERP, logistics, quoting and reporting.
- Financial services
- Core systems for regulated firms.
- Capital markets
- Fund administration platforms used in audited environments.
- Insurance
- Build and run responsibility for an embedded insurance platform operating across European markets.
- Digital assets
- Core banking and custody infrastructure for a licensed institution holding client assets.
- Sports technology
- Platforms built for moments when an audience arrives together.
The people responsible
for Joylo.
Dave oversees engineering quality. Hussein oversees the work our developers agree with customers.
AI & DELIVERY
Hussein Janoo
Head of AI & Delivery
Hussein owns delivery. Every Co-Build engagement and Expert Assist request runs through him, including which engineer takes it forward.
Our commitments
to you.
App ownership, clear prices and accountable help. These are the standards you can hold us to.
01Your whole app is yours to keep.
Export the full repository any day you like, without asking us and without a retention conversation. You own the full application, including its React front end, Node API and Postgres database. If Joylo stops being worth paying for, you should be able to leave with everything.
Explore app ownership02Your developer is part of Joylo's team.
Optional Expert Assist connects you with an in-house Joylo engineer, with a first response within 24 hours. A named engineer works directly in your project for that engagement.
The work is never brokered to a freelancer marketplace or quietly subcontracted. For an ongoing building partner, Co-Build pairs you with a named in-house engineer. You decide how much of the building you want to do yourself.
Explore engineering help03App checks show what needs attention.
You see the AI Confidence Score whatever it says. The score checks scalability, security, reliability, integrations and code quality, and shows you what needs attention.
The score is a guide to where attention is needed. It does not replace testing or a human review of your app.
See the app check04Published prices. No surprises.
Plans and engineering services have published prices. Expert Assist is an optional, fixed $500 for 10 architect hours. Co-Build plans make the monthly price and included engineering hours clear.
See plans and pricing05Run your app on Joylo or elsewhere.
Keep your app on Joylo Cloud, move it to your own AWS or Azure environment, or run it on your own hardware. You can also request EU-only hosting or use your own cloud.
We would rather earn your renewal than lock you in.
Explore hosting choices06A written guarantee to get you to production.
When you purchase the development hours we recommend for your agreed project scope, we guarantee in writing that we will get that scope into production. If our estimate falls short, we carry the extra engineering cost.
This commitment applies to the engineering work you engage us to deliver, subject to the guarantee's responsibilities and exclusions. You can also build and launch independently with Joylo AI.
Read the Production GuaranteeJoylo company details.
Your contract is with Joylo Limited. Our registration, addresses and data arrangements are listed here.
Contact Joylo- Legal company name
- Joylo Limited
- Company number
- 818120
- Incorporated
- 11 June 2026, Dublin
- Office
- The CHQ Building
Custom House Quay, North Wall
Dublin, Ireland - Registered address
- 6 Fern Road, Sandyford Business Park
Dublin, D18 FP98, Ireland - Group
- Sister company to HST Solutions
- Your contract
- Held by Joylo Limited
Data and hosting arrangements
GDPR compliant, with a Data Processing Agreement available on request. Your app can be hosted by Joylo in the region you choose, including EU-only hosting, or in your own cloud account.
START WITH WHAT YOU WANT TO BUILD
Start free.
See what you can build.
Describe your idea. Build it with Joylo AI. Make it yours.