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Amirhossein Khajehpour

PROFILE

Amirhossein Khajehpour

Amirhossein Khajepour developed advanced cryptographic and backend features across the a16z/jolt and NilFoundation/placeholder repositories, focusing on modularity and performance. He engineered a modular preprocessing architecture in Rust for Jolt, separating shared logic between prover and verifier to improve maintainability and onboarding. In the same project, he batch-optimized the sumcheck protocol, consolidating advice-polynomial claims and introducing parallel computation for scalable proofs. For NilFoundation/placeholder, he delivered dynamic Merkle Patricia Trie support and RLP utilities in C++, enhancing ZK-EVM circuit efficiency. His work demonstrated depth in software architecture, algorithm design, and performance optimization, addressing complex integration and scalability challenges.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

4Total
Bugs
0
Commits
4
Features
4
Lines of code
61,058
Activity Months3

Work History

January 2026

2 Commits • 2 Features

Jan 1, 2026

Concise monthly summary for 2026-01 highlighting key features, major fixes, impact, and skills demonstrated for business value and technical achievement.

December 2025

1 Commits • 1 Features

Dec 1, 2025

December 2025: Delivered a Modular Preprocessing Architecture for Prover and Verifier in the a16z/jolt repository, enabling separation of shared preprocessing logic from prover and verifier to improve modularity, maintainability, and future extensibility. Created a shared preprocessing module (JoltSharedPreprocessing) to encapsulate and reuse preprocessing across components. Addressed host integration challenges (JoltCpuProver) and resolved a global initialization bug related to trusted advice Dory. Updated the sample_project template to align with the new architecture. This work reduces cross-component coupling, accelerates onboarding, and provides a solid foundation for faster feature delivery and more reliable builds.

July 2025

1 Commits • 1 Features

Jul 1, 2025

July 2025 monthly summary for NilFoundation/placeholder focusing on key accomplishments, major bug fixes, overall impact, and technical achievements. The work this month centered on delivering robust MPT support for ZK-EVM circuits through targeted enhancements and utilities, with traceable commits.

Activity

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Quality Metrics

Correctness80.0%
Maintainability80.0%
Architecture85.0%
Performance80.0%
AI Usage35.0%

Skills & Technologies

Programming Languages

C++PythonRust

Technical Skills

C++ DevelopmentCircuit DesignCryptographic PrimitivesData StructuresMerkle Patricia TriePython ScriptingRLP EncodingRustZero-Knowledge Proofsalgorithm designback end developmentbackend developmentperformance optimizationsoftware architecturezk-SNARKs

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

a16z/jolt

Dec 2025 Jan 2026
2 Months active

Languages Used

Rust

Technical Skills

Rustbackend developmentsoftware architecturealgorithm designback end developmentperformance optimization

NilFoundation/placeholder

Jul 2025 Jul 2025
1 Month active

Languages Used

C++Python

Technical Skills

C++ DevelopmentCircuit DesignCryptographic PrimitivesData StructuresMerkle Patricia TriePython Scripting