01
Event Modeling workshops
Facilitated sessions that turn scattered business intent into a single visual model your team can reason about. Useful at the start of a new system, in the middle of a stuck one, or before a rebuild.
Systems consultancy · est. 2025
We build systems
that remember.
Evntd designs event-sourced, event-modeled software for teams who need their systems to be auditable, explainable, and ready to change.
01 / Products
What we've built.
Fact
A file-system event-sourcing database for Elixir. Events are files you can inspect with
grep,
jq, and
sed — no black boxes.
UnprotectXLS
Remove sheet protection from your own
.xls and
.xlsx files in seconds. Processed in isolation,
auto-deleted after.
Unannounced
The next projection.
In event sourcing, a projection turns events into something you can read. We're building one for a world that's been keeping its own tally for decades.
More when the wheels hit the grass.
02 / Services
The shape of the work.
Four shapes most engagements take. Real ones are usually a mix.
02
Design & delivery
From model to running code. Architecture, event store selection, read models, and projections — plus CI/CD, infrastructure as code, and deploys to AWS, GCP, Azure, or wherever you run. Your stack, your team.
03
White-glove partnerships
When another consultancy wins the engagement but needs real depth in event sourcing, we embed as hands-on specialists — in your colors, on your timeline, with no overhead of hiring for it.
04
Current-state audits
Most systems only remember their current state. We audit those — surface what's painful, what's recoverable, and where an event-sourced core would actually earn its keep. Sometimes the answer is that it wouldn't, and we'll say so.
05
Legacy support & modernization
Technology keeps moving. The systems that run the business don't always move with it. We bring decades of breadth to the stacks you're still running — and a credible path for when it's time to modernize them.
See the full stack →03 / Clients
Who we've worked with.
Read the full case study (opens in a new tab)“Jake was an integral part of the team Evolve Cloud Services assembled for a major AWS modernization project for a key customer. His technical leadership helped us transform the customer’s portfolio of .NET web applications from Windows-based virtual machines to independently-deployable containerized microservices in Amazon EKS (Kubernetes). The project directly led to significantly reduced costs and helped the customer achieve FedRAMP certification in nine months - a major win. Jake was specifically called out by our customer as a trusted resource for this project.”
“A couple of months ago, while working on some files I had developed several years ago, I ran into some challenging and unexpected issues there were well beyond my capabilities. It was a small project for him, but a huge one for a guy like me. I reached out to Jake and, while time wasn’t critical, he jumped right on it and fixed the issues within a couple hours. He also built a solution so I can fix the issue should the problem arise on other files. Thanks, Jake, for your expertise and for helping keep me moving forward.”
04 / Approach
Event Modeling, then Event Sourcing.
We start with a visual model of your business events — a shared artifact everyone can read. Then we implement the system so those events are the source of truth, not a side effect.
i.
Shared understanding
A visual event model gives engineering, product, and the business a single artifact to reason about. No more whiteboard-to-ticket translation gaps.
ii.
Complete history
When every business decision is a recorded event, you can replay, audit, and reconstruct state at any point in time. No more "what happened last Tuesday?"
iii.
Evolvable systems
New read models, new projections, new queries — all without touching the underlying event log. Systems that bend to the business, not the other way around.
New to Event Modeling? Start here →
05 / Team
Who you'll work with.
Jake Bruun
Founder · Software Architect · Event Sourcing Expert
Jake Bruun is the founder of Evntd, a software consulting company specializing in Event Modeling and Event Sourcing. He has a proven track record of designing scalable systems across industries including research administration, telecom, supply chain logistics, and fintech. Passionate about solving complex business challenges, Jake is committed to helping organizations achieve their goals while transitioning to more efficient, reliable systems.
Robyn Bruun
Business Operations Manager
Robyn leads operations at Evntd — contracts, scheduling, invoicing, and the logistics that keep client engagements moving. She's the bridge between technical delivery and running a business, making sure the right things happen at the right time. Deadlines, deliveries, and the many small details that aren't code all run through her.
06 / Advisors
Who we turn to.
Evntd's advisors shape our thinking on event-driven systems. They're not on the delivery team for client engagements — but the practice we build on stands on their shoulders.
Adam Dymitruk
CEO, Adaptech Group · Creator of Event Modeling
Creator of Event Modeling and a three-decade veteran of event-driven architecture. A frequent conference speaker whose work has shaped the modern practice of collaborative, visual system design.
Martin Dilger
CEO, Nebulit GmbH · Author "Understanding Eventsourcing"
Author of Understanding Eventsourcing and an IT architect with fifteen-plus years implementing event-based systems. Runs trainings and workshops that bring teams up to speed on event sourcing and Axon.
07 / Contact
Work with us.
Building an event-sourced system from scratch, or trying to untangle one that's already running? Drop us a line.