Bajczman.
Treasurer · Bitcoin · AI & Agents

Guillaume Bajczman

I don't build around Bitcoin — I build on Bitcoin. Two decades in operations, infrastructure and treasury. The last seven years inside the ecosystem.

Based in Barcelona · Remote Zone EU / LATAM Status Open to collaborations
Guillaume Bajczman
Career · 2008 → Today
Inflection · Bitcoin · 2018
↓ 2018
Interoute
'08
UEFA
'11
Colt
'13
Getronics
'16
Xapo
'18
Alpha AI
'19
Zodia
'24
Roxom
'24
'26
01 · Experience

Two decades, one thread.

Operations, infrastructure, treasury. The last seven on Bitcoin.

Nov 2024 — Today Present

Roxom · Roxom TV

Head of Treasury · Liquidity · OTC

Building the first BTC-denominated capital markets. I run OTC, liquidity and treasury across digital assets, equities and stablecoins. The best Bitcoin idea in the world: bringing an entire economy onto BTC.

  • Head of Treasury, Liquidity & OTC TradingRoxom · Full-time · Remote
  • Head of TreasuryRoxom TV · Barcelona
Remote · EU / LATAM
Digital Assets
Equities
Stablecoins
BTC-denominated
Feb 2018 — Apr 2024 6 years 3 months

Xapo Bank

Head of Trading — Cash & Crypto Desk

The university of Bitcoin. Joined in back office, left as Head of Trading. Watched the world's first regulated crypto bank being born in Gibraltar — from wallet to bank. Price crises, regulatory crises, partner blowups.

  • Head of Trading — Cash & Crypto Desk ManagerMar 2023 — Apr 2024 · Gibraltar / Remote
  • Treasury Operations ManagerNov 2022 — Jun 2023 · Gibraltar
  • Delivery ManagerApr 2022 — Nov 2022 · Remote
  • Operations Improvements LeadApr 2020 — May 2022 · Gibraltar
  • BTC Trading Desk & Treasury AnalystSep 2018 — Apr 2020 · Barcelona
  • Back Office AnalystFeb 2018 — Sep 2018 · Barcelona
Gibraltar · Remote
First regulated
crypto bank
in the world

6 roles · 1 thesis
Jul 2024 — Nov 2024 5 months

Zodia Custody

Sales Director

Institutional crypto custody. A short bridge between Xapo and Roxom — I covered the institutional side of the equation before jumping back into market-building.

UK · Hybrid
Institutional
Custody
Sales
Jun 2019 — Today In parallel

Alpha AI

Treasury & Trading Strategy · Co-founder

London-based research team combining neural networks and quantitative finance to generate systematic alpha. Math unbiased. 3.5 years of live track record, Sharpe above BTC and S&P. Co-founded with Lucas Gago and Lucas Selebam.

London · Remote
Freelance
Pre-agents era
Exploration
Apr 2019 — Oct 2020 1 year 7 months

Kernel Life

Chief Strategy Officer
AR · Barcelona
Strategy
Side role
Apr 2016 — Oct 2020 4 years 7 months

Getronics Iberia

Senior Customer Solutions Engineer

Colt Managed Services was acquired by Getronics. I followed the team.

ES · Barcelona
B2B Telco
Enterprise
Sep 2013 — Apr 2016 2 years 8 months

Colt Technology Services

Customer Solutions Engineer · Technical Lead
ES · Barcelona
Managed
Services
May 2011 — Jul 2013 2 years 3 months

UEFA

Production Specialist
CH · Switzerland
Broadcast
Production
May 2008 — Apr 2011 3 years

Interoute

Senior Engineer · Team Leader

Where it all started. First technical job, in Geneva. Security & Hosting Operations.

CH · Geneva
First job
Operations
Security
02 · Skills

Three clusters, one signature.

What I bring, measured in sats.

I Treasury & Markets
Treasury Management OTC Trading Liquidity Risk Cash Management Strategic Financial Mgmt. Financial Reporting Banking Relations Cash Flow Investments Corporate Lending Finding Deals
II Bitcoin & Custody
Bitcoin / Crypto Markets Custody & Capital Markets Arbitrage Hedging Digital Strategy Director Level Regulated Banking BTC Desk
III Agents & AI
Agent Systems Claude Agent SDK Claude Skills & Plugins MCP Python Next.js Docker / VPS Agentic Orchestration OTC Flow
03 · Lab

What I build out of curiosity.

Not my job — my lab.

Agents, systems and workflows I design in my own time. All shipped, all running today. A way to test, first-hand, how agents, orchestration and human judgment can work together across treasury, trading and commerce.

D
Live · Desk

Dark Sentinel

Multi-venue trading desk

Multi-venue desk with a CIO-authority architecture. 17 strategy types, 7 venues, 30s cycle. Every capital allocation flows through an AI Portfolio Brain that owns ENTER / REPLACE / REDUCE.

StackPython · asyncio
BrainClaude Agent SDK
APIFastAPI · 7 venues
RiskKelly sizing
O
Live · Predict

Oracle Sentinel

BTC 5-min prediction engine

BTC 5-minute prediction engine trading on Polymarket. Scalper v2 trained on ~1,200 samples, regime gate, friction-adjusted edge and reconciler-drift kill-switch. Quarter-Kelly sizing.

VenuePolymarket CLOB
ModelScalper v2 ML
BrainClaude · Haiku
LearningSelf-learning
K
WIP · Commerce

Kairos

EU commerce opportunity OS

OS for EU commerce opportunities. A 7-agent pipeline that goes from discovery (lead, brief, market analysis) to launch-ready materials (copy, landing, GTM workflow). One agent per stage, traceable handoffs.

Agents7 stages
StackNext.js · Claude SDK
OutputCopy · Landing · GTM
ModelTraceable handoffs
C
Beta · Relations

Casa CRM

Institutional memory layer

Custom CRM mapping deal flow, counterparties and institutional memory across OTC, treasury and BTC-denominated markets. Every contact is a node; every conversation, an event that feeds context to the agents.

StackNext.js · Postgres
MemoryAgent memory
GraphOrchestration
UseOTC flow
S
Live · Scaffold

Casa g. Stack

My daily-driver agentic layer

Daily-driver layer of Claude Code skills and plugins: agentic loops, scheduled tasks, hooks, cowork orchestration and review pipelines. The scaffolding that makes agents governable.

RuntimeClaude Code
ShapeSkills · Plugins
HooksMCP
UseEvery day
04 · Languages

Three tongues, two hemispheres.

And a bit of Catalan.

FR

Français

Native · Paris '85

ES

Español

Bilingual · Argentinian

EN

English

Professional · Xapo

05 · Contact

Let's talk.

I prefer a long email to a short call.

If you're moving size
— or building something on Bitcoin, drop me a line.
Phone
+34 611 209 375