BINARY
FINTECH

Prepared for the Unpredictable

Trading technology & custom software. We build algorithmic trading systems resilient to market turbulence — plus robust backends for clients who take performance seriously.

/01Services

2 areas
What we do

Two domains,
one goal.

We combine deep financial-market knowledge with modern software engineering.

SW · CUSTOM 01 / 02

Custom software

We design and build robust, bespoke software solutions — across programming languages and domains. Trading is just one of them; we equally enjoy building complex web applications, integration backends and specialized systems, with a focus on architecture, performance, security and scalability.

  • Software architecture — systems designed from the ground up, modularity, event-driven design
  • PHP, Python, JavaScript, Rust — the right language for the right job
  • REST & WebSocket API integration
  • Database architecture and optimization
  • System administration and DevOps
  • Security audit and hardening
Book a consultation
BXF · TRADING · TESTING 02 / 02

Trading & Backtesting

Proprietary BXF platform for algorithmic trading — multi-venue, cross-instrument. One engine, one equity curve, in parallel across traditional and crypto markets. Interactive Brokers, Binance and other exchanges via native APIs. Backtesting on historical data, real-time execution, market-condition analysis.

  • Multi-venue execution — Interactive Brokers, Binance, Bybit, Polymarket and more
  • Cross-instrument — stocks, ETFs, futures, forex, crypto in one engine
  • Algorithmic trading strategies
  • Backtesting on historical data
  • Real-time trading via API / WebSocket
  • Robustness and risk management as a religion
  • Testing methods that guard against overfitting
More about the BXF platform
/02Integrations

10 venues
Markets · Brokers · Data

Connected where the trading happens.

Backtesting and analysis across exchanges, brokers and data sources — from institutional markets through crypto spot & derivatives to alternative markets. Stocks, futures, forex, options, crypto and prediction markets under one engine.

Interactive Brokers
Coinbase
Binance
Kraken
OKX
Bybit
Deribit
BitMEX
Coinmate
Polymarket

Missing your favorite trading platform? Get in touch →

/03Platform

v2 · CURRENT
Update FLOW BXF — next-generation platform, built from the ground up.
BXF · Trading engine

BXF — the core of everything.

BXF is the proprietary trading and backtesting platform of BINARY FINTECH s.r.o. — one engine for backtesting, genetic optimization, walk-forward, Monte Carlo and live deployment.

A proprietary trading engine built from the ground up. One codebase, four test modes plus live: backtest, optimization, walk-forward, Monte Carlo. The same file then runs unchanged on a real account. No translation between test and production. No surprises.

Multi-venue, cross-instrument — Interactive Brokers, Binance and more integrations. Stocks, futures, forex and crypto under one engine, on one equity curve. Every strategy, every signal, every order under full control. No black boxes.

How a strategy travels that road step by step — from idea to live deployment — is what our testing protocol walks through.

BT · Backtestsingle run

One backtest,
the full truth.

A single run of the strategy over history. Full simulation of fees, slippage and liquidity. Equity, KPIs, every trade step by step. The same file that will later run live.

GEN · GeneticN candidates

Searching for
the optimum.

A genetic algorithm explores the strategy’s parameter space. Hundreds of candidates in parallel, a profit × risk Pareto front, visual comparison of best and worst runs. We seek a robust solution, not a random maximum.

WF · Walk-Forwardrolling windows

A test beyond
the comfort zone.

Rolling IS/OOS windows verify whether a strategy works on data it has never seen. WFE score, robustness gradient, real-time deviation detection. What doesn’t pass walk-forward doesn’t go to production.

MC · Monte Carloscenario distribution

A distribution,
not a single number.

Thousands of permutations over the strategy’s results. Instead of one equity curve, a whole distribution — KPI percentiles, drawdown probability, worst-case bounds. What looked like a lucky run reveals its true significance.

BXF · /bxf/engine/black_swan.rs LIVE
// BXF Strategy Engine — black-swan detection

let signal = strategy.analyze(&bars);

if signal.kind == SignalKind::BlackSwan {
  let risk = risk_model.size(&signal, account.equity());

  engine.submit(Order {
    instrument:    "BTC-USDT".into(),
    side:          signal.direction,
    qty:           risk.qty,
    stop_loss:     risk.stop,
    time_in_force: TimeInForce::Gtc,
  })?;

  tracing::info!(target: "bxf::trades", "black swan: {:?}", signal);
}

bxf > bxf::engine · awaiting next bar…
orchestrator polling @ 10s · 8 windows tracked
Key features
01Multi-Strategy Engine Multiple independent strategies run in parallel, each with its own logic, timing and risk profile. The engine keeps them separate, but their results flow into a single equity curve.
02Black Swan Detection The market isn’t always normal. The engine detects an extreme move before the charts confirm it — and, depending on the scenario, either protects capital or seizes an opportunity no one else sees.
03Zero-delta execution The same strategy we validated over decades of history runs live without changing a single line. Same file, same logic, only different data — real market, real orders, sub-second latency. No “translation” between prototype and production.
04Portfolios Multiple strategies share one capital base and compete for available position slots. The engine decides who gets exposure, when and at what price. The result is a single equity curve built from independent profit sources — with capital in the market only when there’s a reason.

For registered users, BXF currently provides backtesting and analysis. In line with applicable regulation, live trading is not offered as a service.

/04Technology

stack
Technology

A stack we trust.

Proven technologies for critical systems. No noise, no experiments in production.

applicationPHPBackend
applicationPythonData & ML
applicationRustPerformance-critical
applicationLaravelFramework
storagePostgreSQLPrimary store
storageTimescaleDBTime-series
storageInfluxDBMetrics & events
storageRedisCache & queues
apiREST APIHTTP protocol
streamingWebSocketLive feeds
streamingKafkaEvent streaming
infraDockerContainers
infraKubernetesOrchestration
infraTerraformInfra as Code
infraNginxReverse proxy
infraCloudflareEdge / CDN / DDoS
infraLinuxOS
infraAWSCloud
observabilityPrometheusMetrics
observabilityGrafanaDashboards
observabilitySentryError tracking
ci · cdGitHub ActionsPipelines & tests
ai · verifyClaude CodeAI pair programming
ai · verifyGeminiCross-validation
AI · Note We use AI to simplify and verify code — cross-checking across models. No blind generation; we always think and verify.
/05About

About

From chaotic data,
elegant solutions.

BINARY FINTECH s.r.o. is a Czech software company specializing in the development of complex software solutions and fintech systems. Founded in 2022 with a clear vision: top-tier custom software and trading technology resilient to market turbulence.

A world of ones and zeros where every data point has value — that’s BINARY FINTECH. The BXF platform (successor to the original FLOW) supports both traditional and crypto markets with a focus on risk management, because the biggest opportunities come when others least expect them.

PlatformBXF v2
/01

Precision

Precise backtesting, stable real-time with no outages, thorough robustness testing of every strategy. No shortcuts.

/02

Transparency

No black boxes. Clear separation of each strategy’s results, a complete list of executed trades. Run your own tests and strategies.

/03

Resilience

Systems designed for extreme conditions. Failover, monitoring, automatic recovery, user notifications.

/04

Adaptability

Plan parameters are re-tested automatically; the final setup is subject to our review. Nothing is left to chance. The user is kept informed.

/06Questions

7
FAQ · Common questions

What you ask us.

Short answers to the questions we hear most often — about the platform, testing and working together.

What is BXF?

BXF is the proprietary trading and backtesting platform of BINARY FINTECH s.r.o. — one engine for backtesting, genetic optimization, walk-forward, Monte Carlo simulation and live deployment. The same strategy code that passes the tests runs live unchanged.

Who is the platform for?

From individuals with modest capital all the way to institutional players — companies, banks, prop firms and asset managers. There are no limits on client size: the same engine, the same testing protocol and the same honesty of results apply to everyone.

How do you test trading strategies?

With a multi-phase protocol: from the first backtest through searching the whole settings landscape (exact grid or genetic optimization), walk-forward analysis and Monte Carlo distributions, to tests over instrument universes and concurrent strategies in a portfolio. A strategy that fails any phase does not move on — details on the blog.

What data do you use?

Order book, kline (candles) and tick data. Backtests run on an event-driven engine with accurate spreads, slippage and fill-probability simulation — results as precise as they can be. The details are in our event-driven backtesting article.

Which markets and instruments do you cover?

Stocks, futures, options, forex, crypto and prediction markets — ten integrated exchanges and brokers including Interactive Brokers, Binance, Kraken and Coinbase. All under one engine, on one equity curve.

Do you offer live trading as a service?

For registered users the platform provides backtesting, optimization and analysis. Actual trade execution is always performed by the exchange or broker — the regulated entity where the trader holds an account. Zero-delta deployment — the same code going live in one click — is used internally.

How much money should you put at risk?

Only as much as you are willing to lose. Not even our platform can guarantee that what passes a backtest will carry into the future without a hitch — we push robustness as far as it can go, but not every consequence can be foreseen. Money put into risky trading must be money whose loss you can bear; we believe we can substantially reduce that risk, but we will not promise it. How much to stake, and how, is covered in our position-sizing article.

Why do live and backtest differ so much — and what am I overlooking when I test?

A naive backtest tests a friendlier market: it fills you at the price on the chart, with no fees, spread or slippage, and it doesn't see the fill queue — the price touching your limit doesn't mean you were filled. The deepest trap is that your order isn't in the historical data at all, so the market never reacted to you stepping in. Demos are also simplified and sometimes deliberately flattering. The full breakdown — what a backtest hides and how to get close to reality — is in the article Why Backtests Lie.

Do you show negative results as well?

Yes — deliberately. Negative results and failed tests are part of the testing life cycle: every shining equity curve has a counterpart of dreadful ones, and every quality edge strategy comes with those that didn't make it. The platform never hides negative results — they are what puts the positive ones in perspective. It's part of how we see ethics and marketing: we show the markets as they are.

How are you different from off-the-shelf trading bots?

An off-the-shelf bot is a black box: it promises profit, but you can't look inside. With us the opposite holds where it matters — in the results. Our internal strategies are not public, but every one of them comes with complete results for the user: every trade, every order, the equity curve and the distributions of all tested variants. Robustness is proven by thousands of tests — the settings landscape, walk-forward windows and Monte Carlo distributions — not by one pretty equity screenshot.

Do you build software outside trading?

Yes. Custom software is half of our craft: high-performance backends, integrations, specialized systems — PHP, Python, Rust, Laravel. We build software for distributed data centers and their monitoring, deep-tech projects, applications with AI features and agentic systems, and prediction and testing models of all kinds — as well as websites, presentations and customer demos, web-based CRMs, and much more. Trading technology is our specialty, not our limit.

What is your goal — beyond the business?

Cultivating the algotrading space — its strategies and portfolios. We hold ourselves to an ethical standard in how we inform clients and the public: about the ceilings and limits of algorithmic trading, about realistic returns, and about the approaches that work from where we stand. We don't know everything; we've found a path that works for us. And above all: this is not about just switching on automated trading. It's about knowing what is happening, why and how, what to expect — and how to get your head right so that panic over market swings doesn't drive the bad decisions that end up costing money.

How do we start working together?

Write to us via the contact form or at [email protected]. You will discuss your project directly with the people who build the platform.

/07Contact

get in touch
Contact

Let’s get it going.

Have a project where a standard template isn’t enough? Reach out — we’ll get back to you within 48 hours.

Location Prague / CZ
BXF platform bxf.binaryfintech.com
Company ID 14377101
Company BINARY FINTECH s.r.o.
Status · OPERATIONAL