Personal details

Jim I.

Senior Software Engineer

Based in: 🇧🇿 Belize

Timezone: Central America (UTC-6)

Technical skills

Top 3 skills

Go・8 yrs ANTLR・10 yrs AWS・10 yrs

Other skills

C・30 yrs AWS Lambda・4 yrs Java・10 yrs C++・10 yrs SQL・10 yrs Compiler Construction・10 yrs PHP・5 yrs

About

Highly experienced exec, software developer, architect, manager, leader and technologist;

Serial software entrepreneur, with successful exits in EU, US, Taiwan.

Highly technical, able to work on just about any software, including the largest and most complex products;

Skilled in compilers, machine learning, databases, operating systems, Go, C, C++, Java, .Net and all major technologies.

Intend to move to US Central time - please assume work hours accordingly.

Work Experience

Member/Contributor

ANTLR.org | Mar 2005 - Present

Python

C++

CMake

ANTLR

ANTLR is a tool for creating lexers, parsers, and AST generators and walkers, led by Prof. Terence Parr at USF, with a web site at http://www.antlr.org.

Developed the C and Go code generators and runtimes
Invented new error recovery mechanism for parser detected syntax errors - see citations on resume
Contributor to the generator tool - Java
Developed C and Go code generators and runtime
Improved Go runtime performance between 500X and 5000X
Improved resource usage by orders of magnitude
More than 40 projects use this just within Google - just for Go. Many hundreds, if not thousands of projects worldwide using C and/or Go.

Founder

GatherStars, inc | Apr 2021 - Aug 2023

Python

Java

SQL

Amazon S3

Machine learning

Python 3

Graph Database

DynamoDB

AWS Lambda

API Gateway

AWS

Designed massively scalable architecture in AWS using Cognito, API Gateway, Lambda/Serverless, Neptune Graph DB, SES, Sagemaker, etc.
Wrote all code in Go - API/ioT, Lambda, Go modules, performance critical code.
Developed reproducible continuous deployment using AWS CDK.
Managed the startup/business

Projects

ANTLR3 and ANTLR4 C and Go code generator and runtime

2021 | https://github.com/antlr/antlr4

Java

C++

JSON

Linux

Visual Studio

Shell

OOP

Unit Testing

Vim

GitHub

Continuous Integration

ANTLR

Integration Testing

Docker

Python 3

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. From a grammar, ANTLR generates a parser that can build parse trees and also generates a listener interface (or visitor) that makes it easy to respond to the recognition of phrases of interest.

jWZ Threading Algorithm

2022 | https://github.com/gatherstars-com/jwz

GitHub

This is an open source Go implementation of the widely known JWZ message threading algorithm originally written by Jamie Zawinsky.

Certifications & Awards

Citation: The Definitive ANTLR4 Reference Prof. Terence Parr ISBN: 1934356999, 9781934356999

Prof. Terence Parr | Jan 2013

Citation: The Definitive ANTLR Reference Prof. Terence Parr ISBN: 0978739256, 9780978739256

Prof. Terence Parr | Jan 2007