Algorithmic Trading
Software Development
We provide institutional-grade algorithmic trading software development, expert advisor (EA) development services, and MT4 MT5 algorithm development. We build custom trading systems, indicators, trade copiers and fully automated strategies for traders, prop firms, hedge funds and fintech startups โ delivered with full source code.
Custom Algorithmic Trading Solutions & Automations
Browse our custom algorithmic trading solutions and quantitative services โ or book a call and tell us exactly what you need.
Specialized Trading Bot & Validation Engineering
Explore dedicated development teams for multi-platform trading bots, currency automation, exchange API systems, and institutional tick-data backtesting.
Trading Bot Development
Custom trading bots for MetaTrader 4/5, NinjaTrader, TradingView, and Python with institutional risk controls and full source code.
Forex Trading Bot Development
Custom forex robots built for MT4, MT5, and cTrader with broker fill-mode handling, rollover spread filters, and prop-firm compliance.
Cryptocurrency Trading Bot
Python bots connecting to spot and perpetual futures APIs via asynchronous WebSockets with encrypted API keys and 24/7 uptime.
AI Trading Bot Development
Combining machine-learning signal filters and real-time news sentiment with deterministic, testable execution engines on MT5 and Python.
Backtesting Service & Audit
Independent 99.9% real tick-data backtesting, rolling walk-forward analysis, and slippage stress tests for your existing EAs and strategies.
Trading Bot Guides & Tutorials
Engineering deep-dives on MT4 vs MT5 architecture, trade copier synchronization, prop firm challenge rules, and Pine Script bridges.
Automated Trading System Development & End-to-End Solutions
We don't build demo bots. We build automated trading system development infrastructure โ designed for real accounts, institutional brokers, and high-frequency market conditions.
Algorithmic Trading Platform Development & Ecosystems
We deliver production-grade algorithmic trading software development across all major financial platforms and APIs. Explore our capabilities below.

MT4 development โ MetaTrader 4
MetaQuotes MT4
MetaTrader 4 remains one of the most widely deployed retail trading platforms in the world. As part of our algorithmic trading software development services, we build custom Expert Advisors, technical indicators, automation scripts, and interactive chart panels in MQL4. We engineer multi-pair execution engines with dynamic lot calculation, equity protection algorithms, DLL integrations, and broker-specific slippage controls. Every MT4 EA includes complete source code, 99.9% tick data Strategy Tester reports, and comprehensive deployment documentation.
Services

MT5 development โ MetaTrader 5
MetaQuotes MT5
MetaTrader 5 is built for multi-asset trading, faster asynchronous order routing, and modern 64-bit multi-threaded execution. Our automated trading system development for MQL5 covers high-speed arbitrage, multi-currency hedging algorithms, custom prop firm drawdown monitors, and socket-based execution listeners. We specialize in handling real-world broker execution nuancesโincluding IOC/FOK filling modes, requote mitigation, asynchronous transaction verification, and tick-by-tick order flow telemetry.
Services

NinjaTrader 8 development
NinjaScript & Futures
NinjaTrader 8 is the premier institutional platform for CME, Eurex, and US equities trading. We build high-performance NinjaScript (C#) automated strategies, custom drawing object indicators, and Advanced Trade Management (ATM) strategy controllers. Our team engineers custom order flow tools, volume profile indicators, tick-replay stress tests, and automated bracket order routing designed specifically to operate without memory leaks during fast-moving futures market open volatility.
Services

TradingView Pine Script development
Pine Script v5
TradingView provides unmatched charting and screening capabilities through Pine Script v5. We develop bespoke technical indicators, multi-timeframe strategy scripts, and automated webhook dispatch engines. By pairing TradingView alerts with lightweight cloud middleware, we route live orders directly into MT4, MT5, Interactive Brokers, or crypto exchanges within sub-second execution windows with zero manual intervention required.
Services

cTrader / cAlgo development
C# ECN Systems
cTrader is the gold standard for true ECN execution transparency and algorithmic flexibility. We architect custom cBots and indicators using clean .NET C# architecture with cAlgo API. Our implementations include multi-account risk controllers, depth-of-market (DOM) volume analytics, millisecond trade copiers, and automated strategies designed for direct liquidity provider matching engines.
Services

Python trading systems
Custom API & Engines
For algorithmic desks, hedge funds, and quantitative proprietary traders requiring capabilities beyond desktop terminal boundaries, we construct custom Python trading infrastructure. Our services include vectorized backtesting frameworks (Backtrader, vectorbt), direct REST/WebSocket broker API connections (Interactive Brokers TWS/Gateway, Alpaca, Binance, OANDA), and low-latency order execution pipelines with real-time risk guards.
Services

FIX API & institutional integrations
Institutional Standards
Financial Information eXchange (FIX) Protocol is the global standard for tier-1 bank liquidity and direct market access. We engineer high-performance C++ and Python QuickFIX client applications that interface directly with prime brokers and institutional liquidity pools. Features include sub-millisecond execution, concurrent socket thread handling, drop-copy order routing, and institutional audit logging.
Services
Trading systems we've delivered
Real automated strategies running on live capital across prop firms, hedge funds, and signal providers.
Institutional Execution Architecture & Risk Engineering
Algorithmic trading software development is not simply converting mathematical rules into script files. Live market profitability demands robust execution protocols, deterministic latency handling, and failure-proof risk parameters designed to endure spread widening, slippage, and server disconnects.
Sub-Second Latency & Slippage Control
In automated trading system development, execution timing separates viable alpha from catastrophic drawdown. Our MQL4, MQL5, and C# algorithms incorporate asynchronous order dispatch routines, intelligent retry queues with exponential backoff, and dynamic slippage tolerance filters.
By monitoring tick-by-tick market depth and evaluating broker book liquidity prior to order submission, our systems protect trading capital against adverse price fills and bridge execution bottlenecks during volatile economic news events.
Prop Firm & Capital Protection Rules
Modern proprietary trading firms enforce strict drawdown boundaries, including high-water mark trailing stops, maximum daily loss barriers, and holding restrictions. We engineer dedicated risk sentinels directly into the Expert Advisor core.
Our risk management modules calculate real-time floating equity drawdown, automatically flattening exposed positions before exchange limits are breached. Each order is validated against maximum risk percentage thresholds and correlation caps.
Cross-Platform Logic Integrity
Migrating mathematical trading models between TradingView Pine Script, MetaTrader 5, and Python frequently introduces calculation discrepancies due to differing bar index models, repainting functions, and price settlement mechanics.
We perform rigorous tick-level reconciliation to ensure that signal generation, indicator offsets, and trailing stops perform identically across platforms. Every converted system undergoes dual-environment side-by-side verification before live capital deployment.
Quantitative Trading Software Development You Can Trust
Four pillars of institutional-grade quantitative trading software development and bespoke execution engineering.
Deep trading engineering experience
We understand execution logic, broker latency, filling modes, risk models and the real behaviour of live markets โ not just how to write code. Our team trades and builds, which means we catch problems before they reach your account.
Production-grade systems only
We don't build demo bots or proof-of-concept scripts. Every system we deliver is designed for live account conditions โ tested against real broker environments, real spreads and real execution delays.
End-to-end ownership
Strategy design โ system architecture โ development โ backtesting โ live deployment โ ongoing support. We cover the full lifecycle, so you're not stitching together work from multiple developers.
You own everything, always
Full source code ownership from day one. NDA available as standard. No licensing fees, no vendor lock-in. If you want to take the code to another developer tomorrow, you can โ though most clients don't.
How we work
A structured, milestones-driven engagement framework designed for speed and corporate trust.
Is this the right fit for you?
We work best with clients who know what they want and value quality over speed-to-cheap.
This is a strong fit if you:
VERIFIED COMPATIBLE- Have a defined trading strategy you want automated or improved
- Are building or scaling a prop firm, fund or signal service
- Need a system that runs reliably on live funded accounts
- Value clean code, thorough testing and proper documentation
- Want a long-term development partner, not a one-off hire
Probably not the right fit if you:
POTENTIAL MISALIGNMENT- Don't have a defined strategy and want us to create one speculatively
- Are looking for a guaranteed profitable system โ no one can promise that
- Need something built in 24 hours with no written specification
- Are primarily comparing on price rather than capability and track record
Not sure? Book a free call. If we're not the right fit, we'll tell you honestly โ and point you in the right direction.
What traders say about working with us
Real feedback sourced directly from verified clients, Direct NDA projects, and live system deployments.
"PSI is an artist. With my project, it was very complex and multi time frame and PSI was able to take everything I wrote out / showed on a meeting call, and translated it into an efficent EA on MT5. Thank you PSI ๐"

Muhammad Okasha Razzaq
Founder & Lead Trading Systems Architect
Direct Engineering Oversight on Every Codebase
Unlike agencies that outsource development to rotating junior freelancers, PSI Square operates under direct senior engineering supervision. Every quantitative strategy, MQL4/MQL5 Expert Advisor, C# NinjaScript algorithm, and Python execution engine is reviewed and verified by Muhammad Okasha Razzaq.
With over a decade of hands-on experience developing low-latency execution engines, prop-firm-compliant algorithms, and institutional FIX protocol bridges, our team approaches trading development as financial-grade software engineering. We guarantee comprehensive intellectual property protection, standard non-disclosure agreements (NDAs), and complete source code handover on every project.
Frequently asked questions
Find immediate answers regarding custom indicators, platforms, backtesting, and source code ownership.

How projects are priced
Every algorithmic trading software development project is scoped individually โ starting from $499 for single-strategy EAs and indicators, $1,499 for multi-asset copiers, and custom quotes for institutional FIX API integrations. We provide transparent starting anchors and guaranteed milestone quotes with zero hidden fees.
Book a free 30-minute consultation with our lead trading engineers. We'll analyze your specifications, evaluate execution feasibility, and deliver a detailed scope and fixed quote within 24 hours.
Ready to build your trading system?
Whether you need a simple Expert Advisor or a complex multi-broker trading infrastructure โ tell us what you're building. We'll scope it, design it and deliver it to production standard. Most projects start within 5 business days.
Or email info@psi-square.net ยท We reply within 24 hours ยท NDA available on request












