Your expertise, relationships and ambition don’t change between these two paths.
What changes is whether the value you build becomes an asset you own, or one you hand back.
Rent your book or own it
Salary & bonus
Finite
Income
Performance-linked
GWP
Performance-linked
Equity
Ownership
Rent
Own
Capacity Partners
30 +
Global GWP
$ 1.1 bn
Reduced manual errors
2356
Staff
400 +
Where entrepreneurial underwriters own their future.
Synergy gives you the platform to build your own Rokstone-backed portfolio — with true equity from day one and the full support of a $1.86bn global insurance group.
Backed by 60+ global markets:
You bring the underwriting expertise.
We do the rest.
Launch, grow, and lead your business with speed, autonomy, and scale.
The go to place for top quartile entrepreneurial underwriting talent who are looking for more ownership in an enabling, collaborative entrepreneurial culture.
- Equity from day one
- Global Reach access to 60+ markets
- A trading-ready platform
- Powered by ATOMX
- Compliance, HR, Marketing & Data Science built in
- Founder led independence
8 weeks to market
Synergy is powered by Rokstone, Aventum Group’s specialist underwriting platform - giving you the scale, infrastructure, and global reach to launch with confidence.
Week 1
Define Your Ambition
What we do
Understand your vision, appetite, and goals.
What you get
A tailored opportunity assessment based on your expertise and the markets you want to target.
Weeks 2-3
Shape the Deal
What we do
Structure the portfolio, confirm capacity, and finalise commercials.
What you get
A bespoke agreement designed around your goals and potential.
Weeks 4-7
Prepare for Launch
What we do
Set up ATOMX, branding, marketing collateral, onboarding, and regulatory support.
What you get
A fully operational MGA infrastructure — ready to trade.
Week 8
Go live
What we do
Switch on your MGA and integrate into the Rokstone ecosystem.
What you get
The ability to start writing business from day one, with full support from our specialist teams.
Powering your launch
The backing, structure, and the momentum from day one - so you can move faster than you ever could alone.
The freedom to build. The support to do it properly.
Your MGA backed by specialist teams from day one
Launching your own MGA doesn’t mean building everything from scratch. Synergy gives you immediate access to the capability, expertise and infrastructure needed to operate, grow and compete.
Everything is built to support one thing: your success.
Testimonial
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Your unfair advantage from day one
Atomx
Tech eco-system
Most underwriting businesses are held back by legacy systems, manual processes and disconnected data. ATOMX changes that.
Built in-house by Aventum, it’s a fully integrated technology ecosystem designed to remove inefficiencies, reduce errors and accelerate decision-making - so you can focus on underwriting, not admin.
Work faster with automation removing low-value tasks
Make better decisions with real-time data and insight
Operate on one connected platform — no fragmentation, no duplication
Scale without being held back by systems or process
Independent. Founder-led. Built for entrepreneurs like you.
This isn’t a traditional model and it’s not built for everyone.
Synergy is designed for people who want to take ownership, move quickly and build something that reflects their ambition. People who are done waiting for decisions, second-guessing direction, or feeling like a small part of a much bigger machine.
Here, you’re trusted to lead. Backed to build. And expected to deliver.
Real autonomy - with the backing to make it count
No layers, no politics - just people who move and get things done
A culture built on ownership, pace and accountability
Don't take our word for it
Making the move from employment to building something of your own isn’t a small decision. These are the people who’ve already done it - who chose to step out, back themselves and build with Synergy.
What changed, what surprised them, and why most say the same thing: they wish they’d done it sooner.
More than a workplace
Life at Rokstone
And it shows
At Rokstone, culture isn’t something that’s defined upfront - it’s shaped by the people in it.
It’s a fast-moving environment where ideas are expected, not managed. Where careers aren’t boxed in, and individuality isn’t something you have to tone down to fit.
Whether you’re underwriting complex risk or working behind the scenes, there’s a shared understanding: everyone here is building something and has a role in where it goes next.
Your MGA. Your Equity. your future.
Let’s build it together
If you’re ready to build something of your own, let’s talk.
Submit your details and we’ll be in touch.
Tony Lawrence
Chief Development Officer
Send a message
Awards
Proof in practice.
