Raphael Roybee Salim

University of Surabaya (UBAYA)|Data Science & Artificial Intelligence

roybeey0@gmail.com|roybeey|roybeey0|Raphael Roybee Salim

PythonRustMachine LearningDeep LearningPandasNumpyTensorFlowNext.js

Projects

OKX Futures Automated Trading Bot - Demo Trading

Automated crypto futures trading bot running 24/7 on Ubuntu VPS

Multi Timeframe Engine (4H/1H/15M)Market Regime DetectionInstitutional Risk FrameworkTrailing Stop LossAuto Restart on CrashRealtime Dashboard

Stack:

Python 3.12OKX APIWebSocketUbuntu VPSBTC · ETH · SOL · XAU · BNB · SUI

CodeT5 Python Code Generator

Fine-tuned CodeT5 Transformer for Python code generation from natural language docstrings

HuggingFace View on GitHub

BLEU-454.66

ROUGE-10.611

ROUGE-L0.594

Train Loss1.071

CodeT5 TransformerSeq2Seq Fine-tuningBeam Search DecodingCodeSearchNet DatasetGradio Web UI50K Training Samples

Stack:

Python 3.10PyTorchHuggingFaceGradioKaggle P100

Genetic Algorithm for Trading Strategy Optimization

Automatically discover optimal crypto trading parameters using evolutionary computation

View on GitHub

Total Return+7.27%

Win Rate90.9%

Sharpe Ratio1.6225

Max Drawdown0.81%

Custom GA EngineMulti-objective FitnessTournament SelectionAdaptive MutationCustom Backtest EngineBTC-USD 2Y Data

Stack:

PythonyfinanceMatplotlibPandasNumPy

Crypto Market Analysis — EDA of Bitcoin & Major Altcoins

Exploratory Data Analysis of BTC, ETH, SOL, BNB — 2020 to 2024

View on GitHub

Cryptos4

Years of Data5Y

Visualizations10

Key Insights10

Click to expand

Tap to expand

Price History

Price History & EventsCorrelation HeatmapVolatility ClusteringTechnical IndicatorsReturn DistributionMarket Regime DetectionVolume & OBVMonthly SeasonalityMax DrawdownRisk-Return Scatter

Stack:

Python 3.10yfinancePandasMatplotlibSeabornSciPyJupyter

Web3Blockchain

Python Blockchain Implementation + Wallet Analytics

Blockchain from scratch & Ethereum on-chain wallet data analytics

View on GitHub

Part2Blockchain + Analytics

ConsensusPoWSHA-256

Visualizations5Dark theme charts

APIETHEtherscan

SHA-256 HashingProof of WorkMerkle TreeChain ValidationTamper DetectionEtherscan APIGas AnalyticsWallet TrackingOn-chain Data

Stack:Python 3.10hashlibEtherscan APIPandasMatplotlibSeabornRequests

⟠ EthereumERC-20Web3

Smart Contract Interaction via Web3.py

Read ERC-20 token data & visualize on-chain Transfer events — no API key required

View on GitHub

Events1,538LINK Transfers

Blocks1KBlock range scanned

Charts5Dark theme viz

RPCFreeNo API key needed

Token MetadataBalance CheckerTransfer EventsERC-20 ABIWeb3.pyPublic RPCCLI InterfaceInteractive MenuNo API Key

Stack:Python 3.12Web3.pyPandasMatplotlibSeabornEthereum Mainnet

Whale TrackerOn-chainERC-20

On-chain Whale Tracker

Monitor large Ethereum wallet movements & visualize whale activity from on-chain data

View on GitHub

Transactions1,247Total fetched

Whales836.7% of all txs

Charts6Dark theme viz

Threshold$100KWhale filter

Click to expand

Tap to expand

Whale Activity Over Time

Whale DetectionLive On-chain DataRich Terminal UIMEGA/LARGE AlertsCSV ExportDemo ModeEtherscan APICoinGecko PricesCLI Interface

Stack:Python 3.10Etherscan APICoinGecko APIPandasMatplotlibSeabornRich

AI ResearchDeep LearningNumPy Only

Neural Network from Scratch — XOR & MNIST

Pure NumPy neural network — forward pass, backprop, and training implemented from first principles

View on GitHub

MNIST Accuracy98.43%Test set

XOR Accuracy100%Perfect solve

Training Time1.8minCPU only

Parameters234KPure NumPy

Click to expand

Tap to expand

Per Class Accuracy

BackpropagationXOR ProblemMNIST ClassificationSGD + MomentumDropoutHe InitialisationReLU + SoftmaxNo ML LibrariesDecision Boundary

Stack:Python 3.10NumPyMatplotlibSeabornMNIST Dataset

RustSolanaCLI Tool

Solana Wallet Tracker

Real-time SOL transaction monitor built with Rust — no third-party SDK at runtime

View on GitHub

LanguageRust1.94.0

NetworkSolanaMainnet + Devnet

TX Types3SOL / SPL / Program

OutputCSV+ CLI + Charts

$ cargo run -- vines1vzrYbzLMRdu58ou5XTby4qAqVRLmqo36NKPTg --limit 10

SUMMARY

Wallet : vines1vzrYbzLMRdu58ou5XTby4qAqVRLmqo36NKPTg

Total Txns : 10

Status : 9 SUCCESS | 1 FAILED

Total IN : 4.015860 SOL

Net : +4.015860 SOL

Total Fees : 0.000056 SOL

Balance FetchTX HistorySOL TransferSPL TokenCSV ExportPython ChartsAsync/AwaitCustom RPCRate Limiting

Stack:Rustreqwesttokioserde_jsoncsvcoloredPythonmatplotlib