EXCEEDS logo
Exceeds
Tom Harbert

PROFILE

Tom Harbert

Developed and integrated an on-chain committee resolver for Hashi within the MystenLabs/sui repository, enabling dynamic peer discovery and mTLS authentication in the sui-proxy. Leveraging Rust and gRPC, the solution fetches active committee member public keys directly from the Sui blockchain, tolerates pre-genesis states, and exposes health and membership metrics via Prometheus for unified monitoring. The implementation included robust end-to-end and unit testing, covering key validation and error handling scenarios. This work reduced manual configuration for over 100 operators, improved security posture, and aligned deployment with existing metric pipelines, demonstrating expertise in blockchain integration, telemetry, and secure distributed systems.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

1Total
Bugs
0
Commits
1
Features
1
Lines of code
679
Activity Months1

Work History

June 2026

1 Commits • 1 Features

Jun 1, 2026

June 2026: Delivered Hashi on-chain committee resolver integrated into the sui-proxy to enable dynamic peer discovery and mTLS authentication. The resolver fetches active Hashi member public keys from the Sui blockchain and exposes health and membership metrics, enabling unified monitoring with the existing metric pipelines. Key features: on-chain resolver, dynamic peer discovery, mTLS authentication, and health telemetry. The change is backed by the commit eed444460aa41926b10f54380caa03eb29db4f0d (PR #26975). It tolerates pre-genesis state (empty committees) and can deploy before the first reconfig without errors. Tests and validation: end-to-end verification on a private testnet with real metrics; unit tests cover empty/invalid tls_public_key filtering, Bag ID extraction, Move Option<u64> parsing, and validator metadata name-fallback. Business impact: reduces manual operator configuration for 100+ Hashi operators, improves security with mTLS, and increases observability with new metrics. Alignment with existing patterns (sui-node/sui-bridge) simplifies deployment and metric collection. Technologies and skills demonstrated: Rust/Sui ecosystem, on-chain data access, mTLS, Prometheus metrics, end-to-end testing, telemetry instrumentation.

Activity

Loading activity data...

Quality Metrics

Correctness100.0%
Maintainability80.0%
Architecture100.0%
Performance80.0%
AI Usage60.0%

Skills & Technologies

Programming Languages

No languages yet

Technical Skills

BlockchainPrometheusRustgRPCmTLS

Repositories Contributed To

1 repo

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

MystenLabs/sui

Jun 2026 Jun 2026
1 Month active

Languages Used

No languages

Technical Skills

BlockchainPrometheusRustgRPCmTLS