For businesses and agencies
Automation that takes manual work off your plate.
Custom automations, integrations and AI agents that connect your tools and handle the work your team repeats every week. Built once, then run and improved every month.
One engineer from first call to finished build · US Eastern hours
Selected work
Real systems I've built for clients and for my own business.
Therapy booking system
Paid online booking for a therapy practice in Peru, with WhatsApp reminders and automatic session tracking in GoHighLevel.
AI speed-to-lead caller
New web leads get an AI call in under 30 seconds, with scheduled retries, SMS and voicemail if they don't answer.
E-commerce automation and reporting
A Shopify store in six languages, with n8n syncing orders, ads and GA4 into one dashboard and an AI-written weekly report.
AI receptionist
Answers every call, handles common questions and books appointments, even after hours. Try it live.
Two ways to work with me
For businesses
I design, build and run the system for you. Start with one project, then keep it running and improving on a monthly plan.
- Built around the tools you already use
- You deal with me directly, start to finish
- Ongoing support and improvements each month
For agencies
Extra build capacity under your brand. Your clients see your name, and they stay yours.
- I work inside your agency and client accounts
- I never contact or pitch your clients
- Start with a paid test project, then monthly hours
What I build
For your business, or for your agency's clients.
AI voice agents
Inbound AI receptionists and outbound callbacks that reach new leads in seconds and book them into the calendar.
GoHighLevel automation
Workflows, pipelines, calendars, follow-up and reactivation campaigns, built in your agency account.
n8n and API integrations
Connect GoHighLevel to the tools your clients already use, with clean data and no manual exports.
Booking, payments and reminders
Online booking with upfront payment, plus confirmations and reminders by WhatsApp or SMS.
Reporting and dashboards
Daily data syncs and AI-written weekly reports, so the numbers arrive without anyone asking.
Fixes and cleanups
Broken workflows, messy pipelines and automations nobody understands anymore, fixed and documented.
Talk to a voice agent I built
This is the real system, not a recording. A version of it can run for your business, or under your agency's brand for your clients.
How we start working together
- 01
Intro call
30 minutes on what you need and where things get stuck.
- 02
First project
One build with a fixed scope and a fixed price, so you can judge the work before committing.
- 03
Monthly plan
A reserved block of hours each month, paid upfront, to run, improve and add to the system.
Hi, I'm Axel
I'm a Swedish automation engineer and the founder of Growthline Systems. I've built booking and payment systems in GoHighLevel and n8n, e-commerce reporting pipelines, and my own AI voice agent for US service businesses.
I studied finance at the University of Gothenburg, so I judge a build by what it does for revenue. I work US Eastern hours, and you deal with me directly from the first call to the finished build.
Axel ÖstlingFounder, Growthline Systems
Common questions
Do you work with businesses directly?
Yes. I build and run systems for businesses directly, and I also build white label for agencies.
Do you work white label?
Yes. For agencies, everything is built under your brand, inside your accounts, and I never contact or pitch your clients.
Which tools do you work with?
GoHighLevel, n8n, Vapi, Twilio, the WhatsApp Business API, OpenAI, Airtable, Shopify and most tools with an API.
What hours do you work?
US Eastern business hours. I reply within one business day.
How do we start?
With a short call, then one project with a fixed scope and price. If it goes well, we move to a monthly plan.
How is pricing set?
Projects are quoted with a fixed scope and price. Monthly plans are a fixed block of hours, paid upfront. We agree on both before any work starts.