backtesting
quant
data-engineering
point-in-time
crypto

No Look-Ahead by Construction: Killing the #1 Backtest Lie

Most backtests quietly leak the future into the past. Here's how our engine makes look-ahead bias structurally impossible — as-of joins on the bar clock, per-instrument freshness TTLs, and a leak-check attestation on every preview....
Jonny Bravo -
backtesting
funding
perpetuals
basis-trading
crypto
quant
If your backtester ignores funding, every carry, basis, and delta-neutral strategy you test is a fiction. Our engine accrues funding per bar on live mark notional, prorated by each venue's own funding interval — so a Binance 8h feed and a Hyperliquid...
Jonny Bravo -
backtesting
live-trading
execution
quant
infrastructure
The deadliest gap in systematic trading is between the code you backtested and the code that trades live. We close it by running the exact same engine in both — preflight in milliseconds, backtest in minutes, then schedule the identical strategy as a...
Jonny Bravo -
backtesting
optimization
parameter-sweep
performance
quant
Research velocity is a competitive edge. A grid of five parameters across five values is 3,125 backtests — and on our engine the data for all of them is pulled once, cached as parquet, and reused. Here's how the sweep harness and the cache turn a cof...
Jonny Bravo -
fund-operations
nav
investor-accounting
fees
compliance
A profitable strategy is half a fund. The other half is investor accounting that doesn't drift: unitized NAV-per-unit, pro-rata P&L, management and performance fees with a high-water mark, and a compliance-grade execution audit trail. Here's the acco...
Jonny Bravo -
security
sandbox
platform
python
infrastructure
A platform that lets users write Python and run it on your infrastructure has a hard problem: that Python could try to escape. Here's the layered sandbox — save-time AST validation, restricted builtins, an allowlisted importer — that lets quants writ...
Jonny Bravo -
developer-experience
editor
monaco
tooling
quant
A strategy editor whose autocomplete drifts from the engine is worse than no autocomplete — it confidently suggests methods that don't exist. Ours introspects the real source on every request, so the surface you're offered is exactly the surface that...
Jonny Bravo -
ai
llm
code-generation
quant
developer-experience
An LLM that writes trading code from a one-line description is a parlor trick — unless it's grounded in the exact authoring API, the live dataset catalog, and real sample rows, and its output is validated against the same sandbox the engine uses, wit...
Jonny Bravo -
data-engineering
data-catalog
architecture
crypto
quant
Crypto data is a mess of inconsistent column names, symbol formats, and venue quirks. The dataset catalog maps a clean logical name — 'ohlcv', 'funding' — to a physical table plus a column map and point-in-time semantics, so a strategy says what it n...
Jonny Bravo -
backtesting
metrics
sharpe
data-quality
quant
It's easy to compute a Sharpe ratio. It's harder to compute one that won't embarrass you in front of an allocator. Our metrics derive elapsed time from the calendar span (not the bar count), use textbook downside deviation, and ship a data-quality re...
Jonny Bravo -
execution
risk
reconciliation
live-trading
safety
The scariest moment in automated trading is when your signal thinks you hold one thing and the exchange holds another — from a manual trade, a partial fill, or a stale signal. Our executor reconciles intended vs. actual positions before every live ru...
Jonny Bravo -
execution
order-sizing
exchanges
trading-infrastructure
crypto
A strategy says 'hold $1,000 of this'. The exchange says 'orders must be in increments of 0.001, at least 0.01 units, and worth at least $5'. Bridging those two sentences correctly — every time, for every venue — is the unglamorous last mile where na...
Jonny Bravo -
risk
safety
live-trading
leverage
kill-switch
Between a strategy's signal and a real order sits the most important code in the system: the guardrails. A NaN price, an over-leveraged book, a strategy throwing errors run after run — each is a path to ruin, and each is blocked before it reaches the...
Jonny Bravo -
security
exchanges
api-keys
encryption
fund-operations
Connecting a fund to an exchange means handing over API keys that can move money. Store them wrong and one breach empties every account. Our account layer encrypts every secret at rest, decrypts only at the moment of execution, and syncs live balance...
Jonny Bravo -
onboarding
templates
developer-experience
strategies
quant
The hardest moment in any strategy platform is the empty editor and a blinking cursor. We seed it with real, runnable templates — EMA trend, Bollinger mean-reversion, momentum — each a complete Strategy you can backtest in one click and then make you...
Jonny Bravo -
crypto-funds
infrastructure
fund-management
market-structure
The tools built for equity funds quietly break on crypto. Markets that never close, funding payments that dwarf the spread, fragmented liquidity across a dozen venues, and data that arrives messy — these aren't edge cases, they're the terrain. A fund...
Jonny Bravo -
emerging-managers
fund-management
career
operations
Making money on your own account proves your edge. It doesn't prove you can run a fund. The gap between the two is everything that has nothing to do with trading — investor accounting, fair valuation, fee structures, audit trails, multi-account opera...
Jonny Bravo -
fundraising
due-diligence
backtesting
allocators
credibility
A beautiful backtest is the easiest thing in finance to produce and the hardest to trust. Allocators know this, which is why a great equity curve opens fewer doors than you'd think. The managers who raise capital aren't the ones with the highest Shar...
Jonny Bravo -
emerging-managers
fund-operations
crypto-funds
checklist
Everyone tells you to find an edge. Almost nobody tells you what the day-to-day of actually running the fund requires. This is the checklist we wish existed when we started — the unglamorous operational machinery between 'I have a strategy' and 'I'm ...
Jonny Bravo -
portfolio-construction
diversification
multi-strategy
risk-management
A single strategy, however good, is a single point of failure. Every edge decays, every approach has a regime it hates, and concentration that feels like conviction is often just risk you haven't named yet. Running several uncorrelated strategies as ...
Jonny Bravo -
fees
high-water-mark
investor-alignment
fund-management
Fund fees have a reputation for being where managers quietly take more than they earned. They don't have to be. The high-water mark and the hurdle are elegant, century-old ideas that align a manager's payday with their investors' gains. Here's what t...
Jonny Bravo -
funding-rates
perpetuals
crypto
yield
education
Every few hours, billions of dollars change hands between longs and shorts on crypto perpetual futures. That flow is called funding, and it's one of the most distinctive sources of return in all of crypto — a yield with no equivalent in traditional m...
Jonny Bravo -
emerging-managers
fundraising
transparency
allocators
trust
You can't out-pedigree the established funds. You don't have the brand, the AUM, or the twenty-year track record. But there's one thing you can offer that big, opaque funds structurally can't: radical transparency. For an emerging manager, being an o...
Jonny Bravo -
research
productivity
quant
iteration
competitive-advantage
Two quants with equal talent, equal data, and equal ideas can end up worlds apart for one unglamorous reason: how fast they can test an idea and move to the next one. Research velocity isn't a convenience. It's a compounding advantage that, over mont...
Jonny Bravo -
systematic-trading
discretionary
trading-psychology
crypto
Crypto is the hardest market in the world to trade on instinct: it's open every hour of every day, it's emotionally brutal, and it punishes the exact human reflexes that feel most natural. Systematic trading — rules written down, tested, and executed...
Jonny Bravo -

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