Custom software development
Desktop, web and internal applications built to your brief and to the S7 Standard: fast by design, understandable years later, and entirely yours — source, data and all.
Services
Software that fits the business
you actually run.
S7 builds custom software for companies that have outgrown their spreadsheets and their off-the-shelf tools — and connects it properly to the systems they already depend on.
01 — What we do
Four kinds of work.
Different problems, one standard. Whatever we build, you end up owning the source, the schema and the deployment.
Sage X3 integration
Full-stack Java (Spring Boot) and React systems that read from and write to Sage X3. Stock, orders, invoicing and reporting, surfaced in an interface your team will actually use — without fighting the ERP or waiting on the nightly batch.
High-performance backends in Rust
When the JVM service becomes the bottleneck, the hot path moves to Rust: a single binary under 3 MB, a fraction of the CPU, and memory measured in megabytes instead of gigabytes — on the same Sage data, at the same volumes, with the same business rules.
Developer tooling & automation
Internal tools, command-line utilities, browser extensions and integrations: the work that takes a recurring hour out of a team’s week, every week. It is where PilPod and ReqTone came from.
02 — How the work runs
Four steps, and no surprises at the demo.
The same sequence every time, because the expensive mistakes all happen before any code is written.
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01
Understand
We start with the process, not the software: what is actually slow, who it blocks, and what "finished" would look like for you.
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02
Prototype
Something you can click within the first weeks, running against your real data, so the scope conversation happens early and cheaply.
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03
Build
Short cycles, working software at the end of each one, and a demo you have already seen the shape of.
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04
Hand over
Source, schema, deployment and documentation. You can carry on without us — that is the measure of a finished job.
03 — Stack
What we build with.
Chosen slowly, and kept. Every one of these is something we maintain in production, not something we tried once.
- Backend
- Java · Spring Boot · Rust · PostgreSQL · SQLite
- Frontend
- React · TypeScript · Vite
- Desktop
- Tauri · Rust
- ERP
- Sage X3 — REST and database integration
Tell us what is slowing the business down.
A short description is enough to start. We will tell you honestly whether we are the right studio for it — including when we are not.
Start a project