Passionate about building.
We ship solutions.
We pick a few problems a year and build systems around them — reach out to us if you need our help.
What we build.
Licit.ar
An AI-powered tender aggregator.
Pulls public procurement notices from every Argentine government source into one searchable feed, with alerts when something fits your business.
BioVault
Sovereign medical data infrastructure, interoperable across borders.
Patients control everything; their record is accessible when it is most needed, with no privacy compromise.
Membership OS
A permissionless membership system for Web3 communities.
Proof of work across categories, reward distribution by contribution — communities run themselves.
Walter OS
Our internal agentic OS.
Disciplined workflows, security gates and a skill library so the team moves fast — never at the cost of a security compromise.
Confidential security work
Security reviews, threat modelling and infrastructure audits.
For clients we can't name. The kind of work that doesn't ship with a logo.
Could be yours.
One open place.
If you have a hard problem and the team to match, write to us.
We like problems with a reason to exist.
> 01 · what we pick
We're not interested in building another disposable interface, clone, or trend-chasing product. We work best when there is a real problem, a technical constraint, a business reason — and a chance to make the system better than it was before.
> 02 · what it means
That means we say no often. Our portfolio is intentionally small. The work that does get our attention gets all of it — and we stay selective so the systems we ship are worth the effort of running them for a decade.
What we do.
Product Engineering
- >SaaS products
- >Internal tools
- >Data platforms
- >Backend systems
- >Product architecture
Web3 Systems
- >SVM and Rust-based chains
- >Protocol interfaces
- >Wallet flows
- >On-chain / off-chain
- >Indexers & data layers
AI Workflows
- >AI-enabled products
- >Internal agents
- >Retrieval & knowledge
- >Data extraction
- >Automation layers
Infrastructure & Reliability
- >Cloud architecture
- >CI/CD
- >Observability
- >Performance
- >Deployment systems
Security & Review
- >Architecture reviews
- >Security audits
- >Risk analysis
- >Production readiness
- >Confidential consulting
Research & Ventures
- >Product research
- >Protocol studies
- >Internal ventures
- >Technical experiments
- >Long-term systems thinking
Selected. Focused.
Deeply involved.
01
>decode
Understand the problem, constraints, incentives and risks.
02
>shape
Turn ambiguity into architecture, scope and priorities.
03
>build
Design and implement the system with senior ownership.
04
>ship
Deploy, integrate, document and validate the work.
05
>harden
Improve security, reliability, performance and maintainability.
Founders.
Nicolas Fernandez
Co-Founder
Business, Product & Engineering
A decade shipping systems where security, infrastructure and product converge — and translating between the technical, business and operator layers without losing any of them.
Juan Cruz Fernandez
Co-Founder
Engineering & Security
The product loop and the operating system around it. Treats most product problems as operational problems in disguise, and most operational problems as architecture problems waiting to be named.
NicolásVarela
Lead of Engineering
The person you call when systems get ambiguous. Less interested in trends than in infrastructure that still makes sense five years later.
BenKovalenko
Fullstack Engineer
Born in Kraków, raised around industrial machines that needed constant repair. Moves between frontend, backend and infra without treating them as separate disciplines.
ClaraNakamura
UX / UI Designer
Osaka-born, Copenhagen-based. Grew up between a ceramic studio and an engineer's notebook — and designs interfaces as behavioural systems, not screens.
FrankMori
Backend Engineer
Grew up above a print workshop in Kyoto where everything required calibration. Builds backend systems that disappear into reliability — predictable under pressure.
LilyOrtega
Frontend Engineer
Treats every interaction as a craft problem. Builds frontends with restraint — pages that feel obvious before users notice how much architecture sits underneath.
LucasAlmeida
DevOps Engineer
From Porto Alegre. Was running Linux servers for online communities before he knew the word DevOps. Calm under pressure, allergic to fragile systems.
LucileMoreau
Marketing & Communications
From Lyon, now Montréal. Grew up between documentary editing rooms and antique typography presses. Brand as operational trust made visible — never promotion theatre.
MichaelSørensen
AI Engineer
Aarhus-born, Zürich-based. Family of architects and watch-makers. Treats AI as systems engineering, not magic — asks "what happens when the model is wrong?" first.
PedroSalvatierra
Security Engineer
From the port district of Valparaíso. Fascinated by radio systems and mechanical locks as a kid. Security as architecture, not a restrictive layer on top.
Join us.
Pitch your shape. We'll listen.
write to usNicolásVarela
Lead of Engineering
The person you call when systems get ambiguous. Less interested in trends than in infrastructure that still makes sense five years later.
BenKovalenko
Fullstack Engineer
Born in Kraków, raised around industrial machines that needed constant repair. Moves between frontend, backend and infra without treating them as separate disciplines.
ClaraNakamura
UX / UI Designer
Osaka-born, Copenhagen-based. Grew up between a ceramic studio and an engineer's notebook — and designs interfaces as behavioural systems, not screens.
FrankMori
Backend Engineer
Grew up above a print workshop in Kyoto where everything required calibration. Builds backend systems that disappear into reliability — predictable under pressure.
LilyOrtega
Frontend Engineer
Treats every interaction as a craft problem. Builds frontends with restraint — pages that feel obvious before users notice how much architecture sits underneath.
LucasAlmeida
DevOps Engineer
From Porto Alegre. Was running Linux servers for online communities before he knew the word DevOps. Calm under pressure, allergic to fragile systems.
LucileMoreau
Marketing & Communications
From Lyon, now Montréal. Grew up between documentary editing rooms and antique typography presses. Brand as operational trust made visible — never promotion theatre.
MichaelSørensen
AI Engineer
Aarhus-born, Zürich-based. Family of architects and watch-makers. Treats AI as systems engineering, not magic — asks "what happens when the model is wrong?" first.
PedroSalvatierra
Security Engineer
From the port district of Valparaíso. Fascinated by radio systems and mechanical locks as a kid. Security as architecture, not a restrictive layer on top.
Join us.
Pitch your shape. We'll listen.
write to usResearch, experiments,
field notes.
One short note when a new essay lands.
Are you ready
to start shipping?
Tell us what you're building and where it's stuck.
> or hello@xipherlabs.xyz
> end of transmission
Not the right time? Pull the plug. We'll be here when it is.