Open to opportunities

Farzan User

@farzanuser

Senior blockchain engineer specializing in post-quantum cryptography, institutional DeFi infrastructure, and secure cross-chain systems.

Pakistan

Message

What I'm looking for

I’m looking to build secure, quantum-resistant blockchain infrastructure for institutional DeFi and real-world asset tokenization—working with a security-first team on cross-chain systems, privacy-preserving contracts, and production-grade observability.

I’m a Senior Blockchain Engineer with 4+ years of experience architecting production-grade blockchain infrastructure, post-quantum cryptography systems, and institutional DeFi platforms.

I designed and led development of quantum-resistant, EVM-compatible Layer-1 blockchain work—covering modifications to Ethereum execution clients and consensus (Prysm), plus integrations of NIST-standardized PQC primitives and threshold signature schemes.

At SemiliquidLabs (Programmable Credit Protocol), I architected the core blockchain infrastructure enabling secure institutional lending/borrowing with over $50M notional volume, built Programmable Credit Receipt (PCR) as a credit-position NFT standard, and delivered cross-chain integrations across Avalanche, Solana, Ethereum, and Canton Network.

I also focus on privacy-preserving and secure real-world asset tokenization—developing confidential DeFi smart contracts on Oasis Sapphire, integrating regulated custodians, and building event-driven microservices with strong observability (Sentry) and risk frameworks.

Experience

Work history, roles, and key accomplishments

Current

Senior Blockchain Engineer

Current

Semiliquid Labs (PCP)

Oct 2025 - Present (7 months)

Architected the core blockchain infrastructure for Programmable Credit Protocol (PCP), enabling secure institutional lending/borrowing with over $50M notional loan volume. Designed Programmable Credit Receipt (PCR) and led cross-chain integrations across Avalanche, Solana, Ethereum, and Canton Network, while implementing privacy-preserving smart contracts and MPC-based custodian integrations.

Programmable Credit Protocol (PCP)Programmable Credit Receipt (PCR)Institutional DeFi Lending Borrowing Smart Contracts On Oasis Sapphire Confidential Computing Coin Metrics Latency Monitoring FIX4.4 Integration

Current

Blockchain Architect

Current

ArmUp

Mar 2025 - Present (1 year 2 months)

Led development of ArmChain, a quantum-resistant, EVM-compatible blockchain written in Go. Conducted PQC research from NIST standardization and integrated PQC libraries (including MLDSA) to replace Ethereum native cryptography in execution clients, while contributing to validator identity/signing and Lachesis-based DAG consensus infrastructure.

Go MLDSA Integration Prysm Ethereum Consensus Client Validator Identity & Signing Lachesis Based DAG Consensus PQC Library Integration (TQ42 Liboqs CIRCL)Consensus & Execution Layer Networking

CTO Blockchain Technologies

PQC-Labs

Jun 2025 - Dec 2025 (6 months)

Architected and delivered bespoke blockchain platforms for three clients, focused on quantum-resistant, EVM-compatible design and PQC integration. Overseeing delivery of a private, permissioned RWA network and providing blockchain security strategy aligned to a security-first approach.

Quantum Resistant EVM Architecture PQC Integration Strategy Permissioned RWA Networks

Blockchain Engineer

VanarChain

May 2024 - Feb 2025 (9 months)

Maintained and improved VanarChain infrastructure including Geth, Prysm, Kubernetes, Grafana, and Prometheus. Developed and audited smart contracts (Solidity with Foundry/Hardhat), supported DApp onboarding, and contributed to ecosystem growth and project delivery using Jira and Slack.