01
2024 · Campus SaaS
LastClass
Campus SaaS — attendance, groups, library, notes, alumni networks.
It forcedMulti-tenant identity, role hierarchies,
institutional data isolation
StackInfinity Group
Engineering for an ambitious future.
StackInfinity is a product and engineering company that designs, builds, and operates digital platforms, AI systems, and cloud infrastructure. Our experience building products of our own informs how we help organisations bring new systems to market, scale reliable software, and optimise complex technology estates.
What we built
Every product forced a primitive. The fourth is where they converged.
Find your situation02
2024 · Photography platform
LenV
Photography platform — bookings, gear rental, portfolios, client hubs.
It forcedTwo-sided booking state machines, media
pipelines, secure delivery
03
2025 · Local commerce
Fimyd
Local commerce — paste a link, scan a barcode, compare offers nearby.
It forcedImage and barcode matching, discovery at scale,
inference in the hot path
04
2026 · Hybrid operating layer
Lyka
Hybrid operating layer — workloads placed on policy, cost and data path.
It forcedWorkload placement, one identity plane across
providers, reproducible delivery
The fourth problem changed the layer
Three platforms, three sets of hard primitives, one shared bill.
Lyka exists because the fourth problem was no longer application code — it was where the work ran. Fimyd now runs on it in production.
See the products ↗
Start with the symptom
You are probably here for one of four reasons.
Most engineering problems announce themselves as something else — a missed date, a bill, a hiring plan. Pick the one that sounds like your week.
01It does not exist yet
Build it
You have a mandate, a market or a signed customer, and nothing running. The date is already set and the team you would need to hire does not exist yet.
Read the approach ↗02It works, but barelyScale it
What you built when you were small is now the thing holding you back. Releases are slow, incidents repeat, and nobody wants to touch the oldest service.
Read the approach ↗03It costs more than it returnsRun it for less
Cloud spend grew faster than usage. Steady, predictable workloads are rented by the hour, and finance is asking questions engineering cannot answer.
Read the approach ↗04The pilot never shippedMake it intelligent
You have data and an AI mandate, and a prototype that works on a laptop. Getting it to production means governance, latency and cost you have not solved.
Read the approach ↗
Why we can say that
These are problems we had to solve for ourselves, not slides we assembled.
Nobody paid us to get these right. Our own products stopped working until we did.
Multi-tenant identity
Role hierarchies and data isolation across institutions that share one deployment but must never share a row.
Two-sided transaction state
Booking, rescheduling, cancellation and settlement flows where both sides can act and neither can be left inconsistent.
Discovery and matching
Resolving a product from a pasted link, a photograph or a barcode, then ranking real offers against location and trust.
Media at volume
Upload, transform, store and deliver large media without paying egress twice or handing raw files to the public internet.
Inference under constraint
Model serving with bounded context and controlled concurrency, scheduled against real GPU memory rather than optimistic limits.
Workload placement
Deciding per workload whether it belongs on owned hardware or public cloud — on data gravity, latency and cost, not habit.
One identity plane
OIDC and RBAC that stay coherent across clusters and providers, so access does not fragment as the estate grows.
Reproducible delivery
Artifact promotion and environment parity, so what passed in staging is what reaches production.
Choosing well
You have three options. We are only the right one for some of you.
Every engineering problem can be solved by hiring, by a large firm, or by a small senior team. Here is when each one is genuinely the better answer.
Hire and build in-house
Right when
This system is your core product for the next five years and the knowledge has to live inside the company permanently.
Hard when
Your deadline arrives sooner than a senior hire does, and the first person you hire has nobody to learn the system from.
A large services firm
Right when
You need forty people across several workstreams, and procurement requires a name the board already recognises.
Hard when
The people who won the work are not the people who arrive to do it, and every decision travels through an account layer first.
A small senior team
Right when
The problem is hard rather than large, and you want the person who designed it to be the person writing it.
Hard when
You need to go from four engineers to forty next quarter. We cannot do that, and we will say so rather than try.
Our story
We built our own cloud to keep our own product running.
Fimyd needed infrastructure that renting by the hour could no longer justify, so we wrote the operating layer ourselves. It became the most valuable thing we had made.
The full sequence — four products, the wall we hit, and what we are honest about — is worth ten minutes if you are deciding whether to trust us.
Read the story ↗- Small
- Bootstrapped
- Formerly StackZero
Start here
Tell us what you are running, and where it hurts.
Send the actual problem — the bill, the incident, the deadline, the prototype that will not ship. You will get a reply from someone who would be working on it, not a form response.
connect@stackinfinitygroup.com ↗
- Within two working daysA reply from an engineer who would be on the work, not an account manager and not an automated acknowledgement.
- Then a callForty-five minutes about your problem rather than our capabilities. Bring the architecture diagram, the bill, or the incident report.
- Then something in writingA short written view of what we think is actually going on. Yours to keep and act on, with or without us.