“We've had the pleasure of working with Siempi for the past 2 years, and we couldn't be happier. Their dedication and initiative make them a standout partner we can trust! Not only do they make sure we do things the right way, but they also make sure we stay ahead on all the latest and greatest tech innovations.”
Software Engineering — Rotkreuz, Switzerland
We build software.
We run it
Siempi is a Swiss software engineering company. We build web, mobile and cloud applications, blockchain and fintech systems — for startups, SMEs and institutions. From first concept to live operations, on projects small and large.
- Idea
- Architecture
- Build
- Deploy
- Operate
- Founded 2018
- Rotkreuz ZG
- CHE-369.093.556
- Web · Cloud · Blockchain · Trading
For us, software is not a project that ends at launch. We design, build and deploy systems — and stay responsible afterwards: monitoring, updates, ongoing development. You work directly with the engineers who know your system, because they built it.
01Expertise
Four fields. One standard.
The same engineering standards — from web app to smart contract.
Expertise in detail02From idea to live operations
Live is not done. Live is the beginning.
- Idea
Concept & strategy
We understand the goal first, then we talk technology. Honest even when the simplest solution is the best one.
- Architecture
Architecture & design
Sound system architecture before any code is written — sized for today, open for tomorrow.
- Build
Development
Short cycles, visible progress, a direct line to the engineers. Security and testing from day one.
- Deploy
Deployment
A clean go-live with monitoring, alerts and a rollback plan — no launch into the unknown.
- Operate
Operations & maintenance
After launch is when responsibility truly begins: we monitor, update and keep developing — so your system still holds up in five years. Small or large projects, same process.
03Who we work with
Founders. SMEs. Institutions.
Founders & Startups
From prototype to product — with an architecture that survives growth.
SMEs
Client portals, internal tools and automation — built pragmatically, operated reliably.
Institutions
Complex systems with strict requirements for security and auditability.
Your project matters to us — no matter the size.
04How we work
Audit discipline. Even for the simple web app.
01
Security first
Security thinking from the blockchain world: reviews, testing and clear ownership are part of every project, regardless of size.
02
Transparency
A direct line to the people who build. Open communication at every step, no account management in between.
03
Part of your team
We work like your in-house engineering team — not like a supplier who disappears after sign-off.
05References
Clients who come back.
“I’ve been a customer of Siempi AG for some time now, and to this day, I’m consistently impressed by both their communication and the results they deliver. Their response times are incredibly fast, paired with the highest standard of professionalism — and on top of that, their rates are more than fair. If you’re looking for custom solutions or solid IT consultation, this is an amazing, competent, and friendly address.”
“Wir von Vee Partner haben in den letzten Wochen sehr erfolgreich mit Siempi als Technologie‑ und Softwareentwicklungspartner zusammengearbeitet und können Siempi uneingeschränkt empfehlen. Besonders überzeugt hat uns die ausgeprägte First‑time‑right‑Qualität: Anforderungen wurden schnell erfasst, fachlich sauber durchdacht und mit hoher technischer Präzision umgesetzt. Siempi bringt fundierte Expertise in der Softwareentwicklung, insbesondere in den Bereichen Blockchain‑ und Web3‑Lösungen, Smart Contracts, Web3‑Automatisierung sowie Plattform‑ und Systemarchitektur, mit. Beeindruckend ist dabei, dass nicht nur technisch umgesetzt wird, sondern stets vom eigentlichen Kernproblem aus gedacht wird – pragmatisch, lösungsorientiert und mit Blick auf Skalierbarkeit und Nachhaltigkeit. Die Zusammenarbeit war jederzeit sehr konstruktiv, transparent und partnerschaftlich. Besonders hervorheben möchten wir Cedric und Mauro, die fachlich extrem stark sind, klar kommunizieren und die Zusammenarbeit sehr angenehm und effizient gestalten. Eine klare Empfehlung für alle, die einen verlässlichen, kompetenten und angenehm professionellen Technologiepartner suchen.”
“Die Zusammenarbeit mit der Siempi AG macht grosse Freude. Sie sind extrem kompetent, flexibel, schnell und effizient in der Umsetzung. Man merkt sofort, dass hier viel Wissen, Erfahrung und ein hoher Qualitätsanspruch zusammenkommen. Genau so wünscht man sich einen starken Partner. Wir schätzen die Zusammenarbeit sehr und freuen uns auf alles, was noch kommt! LG Cedirc & Jan von ZEJA!”
Our partners
06Team
Four people. No layers.
No project manager relaying messages: the engineer who builds your system answers directly.
Contact
What do you want to build?
Tell us what you have in mind — we'll tell you honestly what it takes.