I’m Ranjeet Kumar Sah — a Kathmandu-based systems engineer designing secure smart contracts, resilient developer SDKs, and autonomous agent infrastructure across Stellar, Soroban (Rust / WASM), TypeScript, and Zero-Knowledge proofs.
From zero-dependency financial SDKs to autonomous on-chain agents and contract upgrade safety analyzers.
Autonomous developer toolkit connecting LLMs and agent frameworks directly to Soroban smart contracts. Enables deterministic contract simulation, balance verification, and on-chain execution with zero-trust key isolation.
A zero-dependency, type-safe payment gateway aggregation SDK uniting eSewa, Khalti, and Fonepay APIs. Built natively on standard Web Crypto APIs for Node.js, Bun, Cloudflare Workers, and modern edge runtimes.
Automated Rust security engine that performs static bytecode diffing across compiled Soroban WASM artifacts. Identifies accidental storage layout breaks, permission escalations, and unbacked state shifts before mainnet dispatch.
Contributed core optimizations and architectural decoupling for a high-efficiency peer-to-peer crypto-to-cash settlement protocol designed for financial inclusion and cross-border remittance on Stellar.
Privacy-preserving payroll and treasury protocol on Stellar Soroban. Architected treasury parsing pipelines, onboarding recovery hint mechanics, receipt validation circuits, and multisig disbursement logic.
Comprehensive turnkey financial corridor architecture connecting banking APIs with Stellar payment anchors. Implemented anchor quotation services, customer KYC verification callbacks, and transaction status polling engines.
Decentralized metadata tagging registry for Stellar accounts and Soroban smart contracts. Delivered deterministic authorization wrappers, query pagination, and schema backward-compatibility test suites.
Contributed to the premier autonomous AI multi-agent framework. Engineered robust memory caching, structured memory retrieval, and agent action integrations for cross-chain transactions.
Consistent, high-caliber contributions across high-stakes decentralized protocols and systems codebases.
Architected contract deployment workflows, onboarding recovery hints, receipt serialization, and cross-contract escrow settlement.
Resolved PyTorch top-k golden model import behavior in high-performance AI chip kernel runtime, verifying edge-case tensor precision.
Hardened asynchronous state desynchronization, sanitized malicious URI schemes, and introduced concurrent regression test suites.
Engineered monotonic request race-condition suppression, asynchronous out-of-order resolution guards, and accessibility contract preservation.
Implemented memory store plugins and verified prompt injection defenses across automated tool-calling pipelines.
Implemented multi-party milestone escrow contracts, vault initialization checks, and safe upgrade rollback mechanics.
A modern, systems-level toolkit designed for mathematical precision, formal safety, and speed.