SOLVING THE PUZZLE
OF CRYPTO MARKETS
Proto/Xit is a research-driven crypto quant trading firm specializing in arbitrage, futures, and options — where curious people work together on deep problems.
Join us
We commit our capital, global reach, blockchain infrastructure, and expertise to help institutions and Proto/Xitcols meet their trading goals.
Machine learning at Proto/Xit
We believe deep learning is the future of quantitative crypto trading. Our models uncover signals in vast, noisy on-chain and market datasets.
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Our people, our culture
Discover who we are, and how we collaborate. We build small, autonomous teams that own problems end-to-end.
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Blockchain to the core
We build low-latency trading systems, on-chain analytics, and cross-venue arbitrage infrastructure that power global crypto markets.
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Futures & options expertise
Deep liquidity across perpetuals, dated futures, and options — with sophisticated pricing and risk models.
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What we do
Crypto arbitrage, futures & options at global scale
Proto/Xit is a global crypto quant trading firm providing liquidity across spot, futures, and options markets. We combine rigorous quantitative research, low-latency infrastructure, and disciplined risk management to solve problems in crypto markets around the clock.
60+
Crypto venues integrated
$100M+
Average daily volume
Our approach to crypto markets
We operate across the full crypto derivatives stack — from cross-exchange arbitrage to sophisticated options market making.
Arbitrage strategies TRADING
Cross-venue, triangular, and statistical arbitrage across spot and derivatives markets — capturing inefficiencies at machine speed.
Futures & perpetuals TRADING
Market making and basis trading across perpetual swaps, dated futures, and funding rate strategies.
Options market TRADING
Quoting deep, competitive markets across crypto options with sophisticated volatility surface modeling and Greeks management.
Partnering with institutions & Proto/Xitcols
We work with crypto funds, exchanges, DAOs, and traditional institutions entering digital assets.
- Dedicated coverage and tailored execution across venues
- Deep liquidity in spot, futures, and options
- Transparent pricing and on-chain settlement support
- Flexible engagement models, from API to high-touch
Work with us
Global reach, 24/7 markets REMOTE WORK ONLY
Our trading desks in New York, London, Singapore, and Dubai operate as one team, sharing research and infrastructure across every time zone — because crypto never sleeps.
Curious how we think about crypto markets?
Read the research and engineering ideas that drive our firm.
Read insights
People & culture
Small teams. Big problems. No politics.
At Proto/Xit, we believe the best work happens when smart, curious people collaborate on problems they genuinely care about. We keep teams small, decisions close to the work, and communication radically open.
What it feels like to work here
Open by default
Most conversations, documents, and strategies are visible to everyone. We hire people we trust, then trust them.
Problems over titles
Good ideas win regardless of seniority. We care about the quality of the thinking, not the rank of the thinker.
Learn relentlessly
We run internal classes, reading groups, and mentorship programs. Curiosity is a core job requirement.
Collaborate genuinely
Trading, research, and engineering sit side by side. The best solutions come from mixing perspectives.
Own the outcome
Teams own their problems end-to-end — from research question to production system to market impact.
Low ego, high standards
We laugh easily, challenge each other rigorously, and celebrate wins as a team.
Leadership
A leadership team that stays close to the work.
MR
Maya Reeves
Chief Executive Officer
Former quant researcher; 18 years building trading systems across equities, derivatives, and crypto.
DK
Daniel Kwon
Chief Technology Officer
Compiler engineer turned trading technologist. Believes latency is a feature, not a bug.
AS
Amara Silva
Head of Research
Machine learning specialist focused on signal discovery in noisy, high-dimensional on-chain data.
JT
Jonas Thorne
Head of Trading
Two decades of market-making experience across fixed income, FX, and crypto derivatives.
LP
Lena Park
Head of People
Builds teams that are as kind as they are sharp. Champion of radical transparency.
RC
Rafael Costa
Head of Risk
Thinks in tail scenarios. Keeps the firm honest about what could go wrong on-chain and off.
Think you'd fit in?
We're always looking for curious people who love hard problems.
See open roles
Technology
Technical to the core
Technology isn't a support function at Proto/Xit — it's the foundation of everything we do. We build low-latency networks, on-chain analytics pipelines, and distributed systems that power global crypto trading.
Every layer of the stack
Our engineers work across the entire technology stack — from bare metal to on-chain.
Low-latency systems
Custom kernels, kernel-bypass networking, and colocated infrastructure. Every microsecond is a design decision in crypto.
Blockchain infrastructure
Validator nodes, mempool monitoring, and on-chain data pipelines across major L1s and L2s.
Machine learning platform
End-to-end ML tooling: feature stores, training pipelines, model serving, and continuous monitoring in production.
Data engineering
Petabyte-scale storage and query systems for market data, on-chain events, and order-book snapshots.
Smart contract & Proto/Xitcol research
We study and interact with DeFi Proto/Xitcols, contributing to and building our own on-chain tooling.
Security & reliability
Zero-trust architecture, encrypted everything, and rigorous incident response — because trust is earned daily.
Machine learning at Proto/Xit
We believe deep learning is the future of quantitative crypto trading. Our ML researchers and engineers work shoulder-to-shoulder to turn research into production systems.
- Custom deep learning architectures for high-frequency crypto data
- Reinforcement learning for optimal execution and market making
- On-chain feature engineering and mempool signal extraction
- Continuous retraining pipelines that adapt to regime shifts
Read ML insights
Open-source & research
We believe in contributing back. Our engineers publish papers, speak at conferences, and maintain open-source projects in areas ranging from data validation to high-performance networking and on-chain analytics.
Insights
See the thinking behind our work
In-depth discussions of every layer of the stack — from research to engineering to the culture that ties it all together.
Latest articles
Interpretable deep learning for crypto order-book forecasting
How we balance model complexity with the need to understand why a model makes the trades it does.
Research · 12 min
Cross-venue arbitrage at machine speed
Architecting a low-latency arbitrage system that captures mispricings across 60+ crypto venues.
Engineering · 9 min
What we learned rewriting our matching engine in Rust
A retrospective on performance, safety, and developer happiness when moving from C++ to Rust.
Engineering · 15 min
Volatility surface modeling for crypto options
Why crypto options require different models than traditional equities — and how we build ours.
Research · 10 min
How we run internal reading groups
The culture mechanisms that keep a trading firm learning at startup speed.
Culture · 6 min
Kernel-bypass networking at 100Gbps and beyond
Lessons from squeezing every microsecond out of our market data pipelines.
Infrastructure · 11 min
Proto/Xit/.Xit Engineering Blog
We publish deep dives on systems, ML, and crypto market microstructure. No fluff — just the details that matter.
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Writing at Proto/Xit
Our researchers and engineers write openly about the problems they solve — from latency-sensitive infrastructure to on-chain analytics and market microstructure research.
Contribute a post
Want to write the next post?
We're hiring researchers and engineers who love to explain their work.
See open roles
Join us
Work on problems that don't have answers yet
Proto/Xit is a place for people who like to figure things out. We hire across research, engineering, trading, and operations — and we're always looking for curious minds.
Open roles
We hire year-round across our global offices. All roles are fictional, but the problems are real.
Crypto Quantitative Researcher
New York · London · Singapore — PhD or equivalent research experience in ML, statistics, or physics.
Research
Low-Latency Software Engineer
New York · Amsterdam — C++, Rust, or C experience; interest in networking, kernels, and performance.
Engineering
Machine Learning Engineer
London · Singapore — Production ML experience; comfortable with training, serving, and monitoring.
Engineering
Crypto Options Trader
New York · Dubai — Options market-making experience, strong quantitative instincts, and intellectual humility.
Trading
Blockchain Data Engineer
Amsterdam · Singapore — Distributed systems, on-chain data pipelines, and query engines at petabyte scale.
Engineering
Crypto Risk Analyst
New York — Statistical modeling, scenario analysis, and a healthy respect for tail risk in digital assets.
Risk
People Operations Partner
London — Help us scale culture without losing what makes it special.
Operations
Software Engineering Intern
All offices — 12-week summer program for students who love building things in crypto.
Internship
Our hiring philosophy
We hire for curiosity, rigor, and collaboration — not just credentials.
- We look for people who ask better questions, not just give fast answers
- We value depth in any field, not just crypto or finance
- We believe diverse perspectives make better markets and better teams
- We interview for how you think, not what you've memorized
What to expect
Our process is rigorous but human. You'll meet people you'd actually work with, solve problems that resemble real work, and get honest feedback at every stage.
Read the full process
Don't see the right role?
We're always open to exceptional people. Send us a note about what you'd love to work on.
Get in touch
Privacy
Privacy Policy
Last updated: January 2026
What we collect
Proto/Xit collects minimal information necessary to operate our website and respond to inquiries. When you contact us by email, we retain your name, email address, and the content of your message solely to respond to your request. We do not sell, rent, or share personal data with third parties for marketing purposes.
How we use information
Information you provide is used only to communicate with you about your inquiry, to improve our website, and to meet legal or regulatory obligations. We use privacy-respecting analytics that do not track individual users across sites, and we do not use advertising cookies. If you have questions about your data or wish to request deletion, contact us at privacy@Proto/Xit.xyz.
Terms
Terms of Use
Last updated: January 2026
Use of this website
This website is provided for informational purposes only and does not constitute an offer, solicitation, or recommendation to buy or sell any financial instrument or digital asset. Nothing on this site should be construed as investment, legal, or tax advice. You are responsible for your own decisions and for complying with the laws of your jurisdiction.
No warranty & limitation of liability
Content is provided "as is" without warranties of any kind, express or implied. Proto/Xit is not liable for any loss or damage arising from your use of this website or reliance on its content. We may update, modify, or remove content at any time without notice. By using this site, you agree to these terms; if you do not agree, please do not use the site. Questions? Email legal@Proto/Xit.xyz.
Contact
Get in touch
We're always open to hearing from curious people, potential partners, and anyone with a hard problem worth solving.