Introduce

Hi I'm Justin Crosbie,
I Innovate, Develop and Deliver Software

I am a seasoned software developer, tech lead, agile product owner, with 30 years experience delivering software direct to customers.

I have worked for many startups, guiding the innovation process to deliver products that successfully bring value to their markets

Rounded Text

30+

Years of
Experience

10+

startups
I have been part of

100+

projects completed

About

Every startup's survival depends
on knowing its market, it's all about the Pain Points!

I've been working for startups since 2001, and I've witnessed them rise, and fall. It's not always the competition. It's not always the product. It's not always the team. It's never for lack of ideas - we're clever people. It's always the same thing:

We don't know our market.

Resume

Education & Experience

Current

Creator of Passkeyme.com!

Passkeyme is a SaaS platform that enables developers to easily add passkey login to their web and mobile apps

Built with love in rust and React, with native SDKs in Swift, Kotlin, Javascript, Ionic Capacitor, Flutter and and React Native

Uses Stripe for payments, with rate limited subscriptions and usage reports

Its currently accepting Beta testers, feel free to give it a try!

December 2023 - Current

Freelance Consultant

Currently, I'm doing some project-based work for a couple of clients

Projects involve Rust and Flutter, and Java and Angular


R2 Labs Pty Ltd


AAV Service

An Anonymous Age Verification service, for age-restricted sites and social media, to protect children online

Built in rust, Next.JS and AWS Amplify, AWS Lambda

Using Chat GPT APIs, Liveness detection via AWS Rekognition, and OpenCV/tensorflow/python

As covered in an article in The Australian!


OAuth Delegation

An upgrade to OAuth that allows another user to act as a delegate for a user - for Power-of-Attorney use-cases

Built around Keycloak, implementing a custom IdP, built in Java Spring Boot, with Angular frontend


* Wallet Nation

An escrow service for buying and selling using crypto. Currently supports BTC and ETH

This was an existing project that I took over and completed

Built in rust with Next.JS and rust WASM frontend


HSG2 Pty Ltd

Providing ad-hoc support for their clients

Involves updating Java and Angular code, with an OAuth produect based around Keycloak, working with client Postgres data


Side-projects

In my free time I'm currently building a stable-diffusion music video generator, with storyboarding

Recently built a social media sentiment analysis service, to detect bots, trolls, and other noise users and bad actors. Plans to extend to a Chrome plugin

Upcoming music app - Choons - which will use AI to categorise and rank uploaded music tracks. Built with rust backend and Flutter frontend with Figma designs. Almost working!

I am also working on taking out a patent on the idea behind Choons

Built a DApp around a Solidity contract, using Metamask, web3.js, Infura, Truffle


Otherwise, available for hire!

June 2023 - December 2023

Tech Lead

ubank

Integrated Ping MFA and Passkeys authentication into the main banking app via Native Mobile SDKs I built

Mobile app stack was based around Ionic, Angular frontend, with a Node/NestJS backend

An intricate yet fun project, I am now expert in the Ping ecosystem. And Terraform!

2015 - 2023

Senior Dev, Tech Lead, Product Owner

Haventec

One of the founding developers, we took the product on a wild journey.
A true many-hats role, I was steering development, liasing with customers, guiding the team, coding

A cryptography product that was based around Java Spring Boot, Angular (with NgRX), Keycloak and Ping OpenID, native mobile SDKs

Full CI/CD AWS pipeline that deployed both to SaaS and on-prem on dockerHub

2014 - 2017

CTO, developer

Secure Venue

Developed a cross-platform alerts system for the hospitality industry - app is still on the app stores

Developed with love in C# Xamarin and Node, with a Serverless backend hosted in AWS using Lambda and S3. It sends push notifications using Pushwoosh

Patents for the idea were taken out in my name in US, Australia and New Zealand

2012 - 2015

Freelancer

Various startups, mostly as a senior developer and tech lead, coding and guiding them on their journeys

Technologies covered Angular, React, Firebase, Native Mobile (Swift and Android), Node, Java Spring Boot, Salesforce APEX

2009 - 2011

Machine Learning and Artificial Intelligence

Completed online courses by Andrew Ng, Sebastien Thrun and Peter Norvig

Masters of Innovation and Technology Management

UCD Smurfit Business School

Smurfit is Ireland's top MBA business school, this gave me learnings and perspectives that derived direct value to the startups I was part of

Services

My Specializations

Cybersecurity

I am expert in IAM, OpenID, SAML, Ping Identity, Keycloak, FIDO2, Passkeys.

I have developed an OpenId Connect 2.0 IdP from scratch.

4 Projects

Product Owner

I have many years experience in delivering product that is innovative, customer-focussed, addresses market pain points.

And on time.


I am expert with Agile methodologies around sprint management, story drafting, requirements tracking, solution design

I can lead a team to deliver a complex project, keeping them motivated, and within scope - and with excellent test coverage!

10 Projects

Development

I'm full-stack in many ways - Node, Java mostly in the backend, React, Angular, Native mobile in the frontend

I'm not married to any technology, and can pick new ones up pretty quick

Currently I'm spending my time with LLMs, using llamaindex with RAG, learning as much as I can

many Projects

my skills

My Advantages

Node

90%

Node

Java

90%

Java

Rust

70%

Rust

React

90%

React

Angular

90%

Angular

Swift

90%

Swift

Android

90%

Android

AWS

80%

AWS

Xamarin

80%

Xamarin

Flutter

70%

Flutter

Cybersecurity"

80%

Cybersecurity

Blockchain/Solidity

50%

Blockchain/Solidity

AI/LLMs

70%

AI/LLMs

testimonial

Trusted by Clients

contact

Let's Work Together!

justincrosbie@gmail.com

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