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Justin Martin

Justin Martin

Principal Engineer in Telecom, Applied Cryptographer | frozenfire.eth


Doing applied zero knowledge application development under a grant from the Ethereum Foundation ESP.

Specialized in

  • Telecom systems engineering (SMS, VOIP, SMPP, SIP)
  • Security engineering (Cryptography, threat mitigation, compliance)
  • Network engineering (Cloud provisioning, K8S clustering)
  • Operational intelligence, data science

Research interests

  • Zero Knowledge cryptography
  • Sybil resistance
  • Cryptoeconomics
  • Privacy
  • Adversarial Interoperability


2019 Blockchain network communication management, US20210243036A1


2021 - Present Ethereum Foundation

  • Developing a ZK system for proving knowledge of JWTs issued by social identity providers
  • Producing open source ZK cryptographic primitives
  • Providing community education and support for ZK tooling, mixers, and other privacy/crypto projects
  • Talent scouting, routing prospects toward ESP projects

2013 - 2021 CallFire / EzTexting

  • Started as a vendor for SMS connectivity through SMSCloud
  • Professional Services work for enterprise customers, developing custom call scheduling, routing, and reporting solutions
  • Developed CallFire's PHP SDK
  • Refactored majority of message processing, routing, and origination software for EzTexting
  • Acted as Platform Architect, DevOps Engineer, Security Engineer
  • Produced a "Cloud Caller" provisioning automation system which enabled 20X increase in outbound capacity
  • Oversaw migration to automated cloud provisioning tooling, automated monitoring system
  • Developed Operational Intelligence platform producing reporting, monitoring, and analysis for infrastructure and telephony operations
  • Acted as Principal Engineer in Operations, overseeing infrastructure management, security, carrier operations
  • Developed an automated, heuristic-and-machine-learning-based messaging compliance system, enforcing industry content regulations
  • Developed anti-spam, anti-fraud threat modelling engine
  • Acted as Principal Engineer in Growth, bootstrapping a Growth team effectively utilizing A/B testing to massively decrease churn, increase conversion and ARPU

2013 - 2019 Roave

  • Developed and managed SMSCloud, a high-throughput SMSC connecting businesses to telephony carrier networks
  • Oversaw operations of software development agency business (contract negotiations, recruitment, etc)

2012 MediaDevils

  • Ecommerce sweatshop
  • Built numerous custom ecommerce websites for "As Seen on TV" products
  • Built custom membership video streaming platforms
  • Built specialized social network / online learning platforms


2008 - 2016 PHP

  • Credited documentation maintainer
  • Voting project member
  • Community management (IRC, reddit, etc)
  • Founded PHP Mentoring
  • Contributed to Zend Framework

Popular repositories

  1. A PHP-based decoder and encoder for the Minecraft NBT format

    PHP 47 13

  2. A PHP-based library for interfacing with Mindbody's SOAP API

    PHP 43 29

  3. Swagger parser for PHP

    PHP 28 17

  4. An interface for querying Dune Analytics in Python

    Python 13 3

  5. A Javascript-based decoder for the Minecraft NBT format

    JavaScript 12 4

  6. Verify JWTs using SNARK circuits

    JavaScript 12 1

181 contributions in the last year

Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Mon Wed Fri

Contribution activity

December 2022

10 contributions in private repositories Dec 1 – Dec 2

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