Backend systemsDocument AIInference systemsremote / UTC-4 / English and SpanishPortfolio 2026

Backend, document, financial, cryptographic, and inference systems

More than six years of professional software engineering. Recent work includes source-traceable document pipelines, financial automation, Rust cryptography, real-time backends, and serving frontier open-weight models on Blackwell GPUs.

Selected systems

Selected systems with production code, source-level debugging, tests, and measured results.

  • Document AI / financial extraction

    Financial Document AI with source evidence

    The system extracts financial facts from Arabic and English audited statements. Each value keeps its source reference.

    34% to 94%

    Audited-statement extraction evaluation

    Two extraction passes are checked against accounting identities, section totals, and cross-year consistency. Uncertain values move to an explicit review state.

    PythonFastAPIPostgreSQLOptical character recognitionVision models
  • Stackit.ai / financial systems

    Onchain wealth automation

    The system connects onboarding, money movement, policy checks, scheduled workers, and Aave V3 position protection.

    84 positions / 0 liquidations

    18-month managed production run

    The system combined Plaid, Bridge.xyz, Privy, smart contracts, background execution, and operational reconciliation.

    TypeScriptNode.jsAave V3Bridge.xyzPlaidPrivy
  • vLLM / inference investigation

    GLM-5.2 sparse attention on Blackwell

    A 504-billion-parameter checkpoint loaded on eight RTX PRO 6000 GPUs. Output then repeated because the sparse indexer ran on the wrong layers.

    240K-token context

    Cold single-prompt validation on the sparse path

    The investigation ruled out decoding variables, isolated attention with a dense fallback, derived the missing layer pattern, and bounded long-context work with chunked prefill and decode-context parallelism.

    vLLMCUDANCCLB12XNVFP4GCP
  • LayerD / Rust cryptography

    Threshold consent infrastructure

    Users can grant or revoke permission for data use. Providers and consumers can verify the current consent state without seeing the underlying record.

    3.63M IDs / 63.2 seconds

    SHA3-256, Merkle proof generation, and local IPFS storage

    The implementation covered identity-based encryption, BLS signatures, Merkle proofs, threshold decryption, PVSS and DKG flows, and WASM and FFI exports.

    RustWASMBLSMerkle proofsNATS JetStreamHedera
  • MCP protocol migration / TypeScript

    Stateless MCP 2026-07-28 for OpenRouter

    A TypeScript server implements the stateless MCP 2026-07-28 protocol over HTTP and stdio. A direct CLI uses the same bounded OpenRouter operations.

    13 tools / 1 resource

    Fixed 3.0.0 surface under the 2026-07-28 protocol

    The 3.0.0 surface fixes its discovery, account, inference, and generation operations instead of deriving tools from upstream data.

    TypeScriptMCP 2026-07-28HTTPstdioOpenRouter

Engineering notes

Each note states the failure, tests, cause, and fix.

Project archive

Production systems, tools, research, experiments, hackathons, and public-interest projects.

Production SystemsFinancial SystemsAI and InferenceCryptography and BlockchainBackend and Distributed SystemsDeveloper ToolsOpen SourceResearch and Reverse EngineeringExperimentsHackathonsPublic Interest
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About

I started programming around 2012 through Linux, networking, web servers, security tools, and technical communities. Professional work began in real-time backend systems and grew into document processing, financial automation, cryptography, and model inference.

Working context

Remote from UTC-4. Working in English and Spanish.

Read engineering journey