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SachuJames/README.md

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About

Backend engineer based in Kerala, India, working on trading infrastructure, distributed systems, and Web3. B.Tech in Computer Science at KTU (2023 to 2027). Previously a full stack developer at SpearHub (remote, Nov 2025 to Apr 2026).

Currently building Meridian, a memory-mapped columnar store for time-series data in Rust.


Featured Work

Trading and Market Infrastructure

  • tickforge - Deterministic nanosecond-precision market microstructure simulator and matching engine (C++20), fully reproducible runs.
  • limit-order-book - Price-time priority matching engine in Rust: dense price levels, pooled orders, zero-allocation hot path.
  • chainbook - A limit order book that lives entirely on-chain (Solidity, Foundry): escrowed funds, price-time priority, partial fills.
  • itch-feed - ITCH 5.0 market data feed handler in Rust: seeded UDP simulator, lock-free SPSC ring buffer, gap detection with retransmit requests.

Distributed Systems and Backend

  • distributed-task-queue - Redis Streams task queue with retries, idempotency, backpressure, dead-letter queues, and live observability.
  • ledger-forge - Double-entry accounting ledger (Go core, NestJS API) with idempotent posting and a live WebSocket feed.
  • lightweight-api-gateway - Programmable HTTP API gateway (Node.js, Fastify, Redis, PostgreSQL) with a React dashboard.
  • skypod - A small Go service run like a platform: Helm chart with autoscaling, Terraform for EKS, Prometheus dashboards and alerts, ArgoCD.

AI Agents and Tooling

  • agent-pay - Payment rails for AI agents: wallets, spending limits, human-in-the-loop approvals, double-entry ledger, on-chain settlement.
  • mcp-gateway - Gateway for Model Context Protocol servers: auth, scopes, rate limiting, audit logging.
  • agent-evals - Evaluation harness for AI agents: YAML task suites, tool-use loop, scorers, traces, regression tracking.

More

  • solana-payment-streaming - Solana payment-streaming protocol: SPL tokens per second, cliffs, cancellations, TypeScript SDK.
  • cloudtrim - Kubernetes rightsizing CLI (Python, published on PyPI): compares requests against real usage and prices the waste.

Tech Stack

Languages
Backend
Frontend
Database & Cache
DevOps

Working with Solana and Anchor, the XRP Ledger, Redis Streams, and Prometheus day to day.


Open Source

Contributions to Python, Rust, and Web3 libraries. One fix has shipped so far; the rest are open, and the rotki one is deep in maintainer review.

Shipped: massive-com/client-python - my TLS configuration fix (PR #1034) was folded in by the maintainer and released in v2.9.0, with a co-author credit.

Open:


Connect

GitHub LinkedIn Portfolio


Pinned Loading

  1. tickforge tickforge Public

    TickForge: deterministic nanosecond-precision market microstructure simulator (C++20)

    C++

  2. distributed-task-queue distributed-task-queue Public

    A Redis Streams-backed distributed task queue with retries, idempotency, backpressure, dead-letter queues, and real-time observability.

    Python

  3. ledger-forge ledger-forge Public

    Double-entry accounting ledger for fintech: Go ledger core with idempotent posting, NestJS API gateway with auth, validation, and a live WebSocket feed.

    Go

  4. lightweight-api-gateway lightweight-api-gateway Public

    A programmable, extensible HTTP API gateway built with Node.js, Fastify, Redis, PostgreSQL, React, and Docker.

    TypeScript

  5. solana-payment-streaming solana-payment-streaming Public

    SolStream: a Solana payment-streaming protocol. Stream SPL tokens per-second with cliffs, cancellations, a TypeScript SDK, and a live dashboard.

    Rust

  6. agent-pay agent-pay Public

    Payment rails for AI agents: agent wallets, spending limits, human-in-the-loop approvals, double-entry ledger, and on-chain settlement

    TypeScript