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My name is Park Sung Chan, a developer specializing in MetaTrader 5 algorithmic trading systems.
I design and research long-term, reliable automated trading models based on the structural characteristics and statistical patterns of financial markets.
Rather than building simple trading strategies, I focus on interpreting the market from multiple perspectives and developing high-level algorithmic frameworks that can adapt and evolve over time.
🔥 Introduction to the NEXA EA Project (Strategy Ecosystem)
The NEXA EA Project is an expandable strategy-development program built upon my research philosophy.
Its goal is not to create a single EA, but to establish a sustainable and stable automated trading ecosystem.
Each strategy is designed from various market perspectives—trend, swing, volume, volatility, and more—and developed through long-term backtesting and structural validation processes.
🔧 Expertise
• Structural market analysis based on Trend / Swing / Volatility / Breakout models
• Algorithm design focused on reproducibility with 3–10 year long-term backtests
• Drawdown reduction and risk-structure optimization
• Multi-timeframe system architecture with refined entry logic
• Technical support for users across 11 countries worldwide
In addition, I continuously conduct internal research projects to build more advanced automated trading frameworks, strengthening the reliability and structural integrity of future strategies.
(Core engines and internal technologies are not publicly disclosed.)
🎯 Development Philosophy
For me, an EA is not just a “trading script,” but a structural model that continually adapts to market changes.
I follow four essential principles:
✔ Stability
A robust framework that remains steady despite market fluctuations.
✔ Clarity
Clear, intuitive, and elegant algorithmic design.
✔ Consistency
Performance that can be reproduced and maintained over long periods.
✔ Evolution
Continuous research and improvement to evolve the strategy.
This philosophy is the foundation of the entire NEXA EA lineup, where every system is designed with a focus on long-term survivability rather than short-term results.
🌍 NEXA EA — Long-Term Strategy Ecosystem
NEXA EA is a long-term algorithmic ecosystem that grows and improves over time.
Each EA functions as an independent strategy, while simultaneously forming part of a broader portfolio structure—providing users with a stable and diversified automated trading environment.
🤝 Commitment to Users
• Clear and transparent explanation of all strategy logic
• Systems designed to perform reliably under diverse market conditions
• Continuous updates and trustworthy technical support
I am committed to ensuring that your automated trading experience becomes more stable, reliable, and consistent.
Thank you.
Product Description NEXA Ha Pullback System is an automated trading Expert Advisor for MetaTrader 5. The EA is designed for GOLD M15 trading conditions. It uses a multi-timeframe structure based on D1 and H4 market regime filtering, H1 trend confirmation, and M15 Heiken Ashi pullback triggers. The main purpose of the system is to reduce random entries and only look for trade setups when the higher timeframe direction and the lower timeframe pullback structure are aligned. This product does not
NEXA Ha MTF Trend NEXA Ha MTF Trend is a MetaTrader 5 Expert Advisor based on higher-timeframe Heiken Ashi trend confirmation and M15 volume-based trigger logic. The EA checks the H4 Heiken Ashi direction as the main trend filter and uses M15 OBV, volume activity, candle structure, ATR, ADX, spread, and trading time filters to evaluate entry conditions. It is designed to trade only when the higher-timeframe direction and lower-timeframe trigger conditions are aligned. Strategy Overview This
NEXA Ha Smooth Trend NEXA Ha Smooth Trend is an Expert Advisor for MetaTrader 5. It is designed as a short-oriented trend-following system for the GOLD M15 chart. The EA combines Heiken Ashi, FrAMA, Momentum, ATR, and ADX/DI to evaluate market direction and entry conditions. It does not enter trades based on a single indicator signal. Instead, it checks higher timeframe direction, volatility, spread, trading time, and pullback re-entry structure before attempting a trade. By default, Buy entries
NEXA HA Trend Master PRO NEXA HA Trend Master PRO is an Expert Advisor for MetaTrader 5. The product is designed to analyze trend direction, pullback areas, and re-entry conditions on GOLD charts. The EA uses a combination of Heiken Ashi, EMA, ADX, DI, ATR, and Parabolic SAR to evaluate market conditions. It first checks the main trend direction on higher timeframes, then evaluates whether pullback and re-alignment conditions are formed on the lower timeframe. This product is a trading
NEXA Breakout Guard Pro NEXA Breakout Guard Pro is an automated trading system designed to identify trading opportunities during price breakout conditions. The system evaluates market structure, volatility, and momentum, and executes trades only when predefined conditions are met. Key Features Breakout Detection Identifies potential trading zones based on price movement beyond defined levels or channels. Trend and Momentum Filtering Uses moving averages, momentum indicators, and volatility
NEXA HA Trend Basic – Product Description (MQL5 Market) Overview NEXA HA Trend Basic is an automated trading Expert Advisor designed to reduce market noise using Heiken Ashi candles and identify trading opportunities aligned with the prevailing trend. It combines EMA and Stochastic indicators to evaluate both trend direction and overbought/oversold conditions. How It Works The system operates based on the following logic: Uses Heiken Ashi candle patterns to determine market direction Applies an
NEXA Ichimoku Pro Max 1. Product Overview NEXA Ichimoku Pro Max is an Expert Advisor for MetaTrader 5 based on Ichimoku trend alignment and ATR-based risk control. The system uses a higher timeframe for directional bias and a lower timeframe for entry timing. Its default structure is H1 for trend confirmation and M15 for execution. The trading logic combines Ichimoku alignment, ATR volatility filtering, volume strength, OBV direction, spread control, and position management. 2. Main Trading
NEXA Pivot Zone Breakout PRO (H1, GOLD) 1. Product Overview NEXA Pivot Zone Breakout PRO is an automated trading Expert Advisor designed for the H1 timeframe. The system is built around Daily Pivot (P) breakout and retest logic. The strategy is primarily designed for GOLD (XAUUSD). The Expert Advisor combines the following elements: Daily Pivot (P), R1, S1 levels Strong body breakout confirmation on H1 MACD histogram momentum filter Pivot retest confirmation ADX trend strength filter This
NEXA Ichimoku Directional System Description NEXA Ichimoku Directional System is an automated trading system designed to identify market direction using a combination of Exponential Moving Average (EMA), Ichimoku indicators, and the Relative Vigor Index (RVI). The system analyzes trend direction and market strength, and executes trades only when predefined conditions are met. It is structured to evaluate price position, cloud structure, and momentum in a consistent and rule-based manner. Key
NEXA Adaptive Gold Engine PRO 1. Overview NEXA Adaptive Gold Engine PRO is an automated trading Expert Advisor designed for the GOLD (XAUUSD) market. It analyzes market structure, trend direction, and volatility conditions to execute trades based on predefined rules. The system combines multiple condition-based logics to adapt to different market situations. 2. How It Works The EA operates using the following process: Market trend and structure analysis Volatility-based entry condition
NEXA Ichimoku Trail System PRO NEXA Ichimoku Trail System PRO is an Expert Advisor designed to perform automated trading based on Ichimoku analysis and price structure. It evaluates market direction and conditions to execute trades and manage positions automatically. Overview The system uses Ichimoku components to identify market trends and applies predefined conditions for trade entries. After entering a position, it manages risk and trade progression using structured exit and protection rules
NEXA Ichimoku Pullback Pro Product Description 1. Overview NEXA Ichimoku Pullback Pro is an automated trading Expert Advisor based on the Ichimoku indicator. It analyzes market direction and price pullback conditions, and executes trades only when predefined criteria are met. 2. Operating Logic The system operates using the following principles: Trend direction is determined using Ichimoku components Price pullback zones are identified within the current market structure Buy or sell orders are
Product Description NEXA Ichimoku Cloud Break PRO NEXA Ichimoku Cloud Break PRO is an Expert Advisor based on the Ichimoku Cloud structure, designed to identify market direction and execute trades automatically when predefined breakout conditions are met. The system focuses on price movements around the cloud area and applies additional filters to reduce unnecessary entries. Strategy Overview This Expert Advisor operates based on the following logic: Detects when price breaks above or below the
Product Description (EN) NEXA Ichimoku Basic Trend PRO NEXA Ichimoku Basic Trend PRO is an automated trading system based on Ichimoku trend analysis combined with price structure conditions. The system is designed to identify market direction and execute trades only when predefined conditions are met. This Expert Advisor does not rely on a single indicator signal. Instead, it applies multiple filters to evaluate market conditions before entering a trade. 🔹 Key Features Trend detection using
NEXA Daily SR Master PRO — Product Description (English) 🔹 Description NEXA Daily SR Master PRO is an Expert Advisor designed to analyze market structure based on daily support and resistance levels and execute trades automatically when predefined conditions are met. The system focuses on key price reaction zones and applies a structured approach using multi-timeframe analysis to identify potential trading opportunities. 🔹 How It Works The Expert Advisor operates through the following process
NEXA Camarilla Stretch PRO – User Guide 1. Overview NEXA Camarilla Stretch PRO is an Expert Advisor designed for the MetaTrader 5 platform. The program analyzes price data and applies predefined rules to execute trades automatically based on market conditions. 2. Features The product includes the following functions: Automatic trade entry and exit Trade condition filtering Time-based trading control Risk management settings Partial close and position management All functions operate according to
NEXA Pivot Inner Range EA Product Overview NEXA Pivot Inner Range EA is an automated trading program designed to analyze short-term price movements within Pivot-based price ranges. The Expert Advisor operates on the MetaTrader 5 platform and combines Pivot levels, RSI, Momentum, ATR, and ADX indicators to evaluate market conditions. The strategy focuses on price fluctuations that occur within the range between the Pivot support (S1) and resistance (R1) levels. This program is not tied to any
NEXA GOLD Algorithmic Trading EA Product Overview NEXA GOLD Algorithmic Trading EA is an automated trading program designed for the MetaTrader 5 platform. The Expert Advisor analyzes price movements in the GOLD (XAUUSD) market and executes trades according to predefined algorithmic rules. The system automatically opens, manages, and closes positions based on market conditions and user-defined parameters. This product is a trading tool for MetaTrader and operates according to programmed trading
NEXA Pivot Scalper PRO – User Guide Overview NEXA Pivot Scalper PRO is an automated trading system designed for the MetaTrader 5 platform. The system analyzes price behavior around pivot levels and evaluates short-term market conditions using several technical indicators. Trades are opened automatically when multiple conditions align. The Expert Advisor is designed to operate on intraday market movements and focuses on structured entry conditions and predefined risk parameters. The product is
NEXA Trend Ride PRO — User Guide 1. Overview NEXA Trend Ride PRO is an automated trading program (Expert Advisor) designed for the MetaTrader 5 platform. The program analyzes market conditions using price movement and technical indicators to identify potential trend opportunities. When the defined conditions are met, the program can automatically open and manage trading positions. The Expert Advisor operates according to predefined parameters and risk management settings that can be configured