Justin Carter
Chief Technology Officer at Galoy
Freiburg im Breisgau, Baden-Württemberg, Germany
Summary
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RockstarJustin Carter is a pragmatic CTO and software engineer with 11 years of experience building and automating reliable systems across the full stack, currently leading technology at Galoy from Freiburg, Germany. He blends hands-on development in languages from Rust and Go to Java and OCaml with deep DevOps expertise across vSphere, GCP and AWS to optimize delivery, testing and operations. Justin has a track record of architecting large-scale refactors and shipping infrastructure automation, including CI/CD and integration test improvements, and has been a core maintainer on notable open-source projects such as Habitat and contributions to Bitcoin projects like Bisq and Galoy’s Blink. He advocates immutable designs, strong type systems and event-driven message passing to improve testability and extendability, and is skilled at translating complex distributed-system requirements into pragmatic, auditable solutions. Unusually for an executive, he still spends substantial time in code and automating workflows, and previously built Misthos, a collaborative Bitcoin multisig wallet.
11 years of coding experience
Github Skills (17)
docker10
redis10
bitcoin10
bitcoins10
dockers10
java10
cicd10
javas10
code-organization10
refactoring10
integration-testing10
lightning-network7
wpgraphql7
cryptocurrency7
wordpress-graphql7
Programming languages (24)
Github contributions (5)
GaloyMoney/blink
Jun 2021 - Jan 2023
bitcoin banking infrastructure
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:1827 reviews, 601 commits, 886 PRs in 1 year 7 months
Contributions summary:Justin contributed to the backend infrastructure, focusing on integration tests using Docker Compose and enhancing the application's integration with Redis. They also made changes to the deployment configuration, adding support for GraphQL-admin. Additionally, the user initiated the implementation of a Concourse pipeline for the project. These contributions suggest a focus on improving the development, testing, and deployment workflows for the bitcoin banking infrastructure.
paymentsinfrastructurebankingcryptocurrencycommunity-banking
bisq-network/bisq
Sep 2019 - Nov 2019
A decentralized bitcoin exchange network
Role in this project:Back-end Developer
Back-end DeveloperContributions:23 commits, 14 PRs, 51 comments in 2 months
Contributions summary:Justin primarily focused on refactoring and extracting code related to formatting and parsing within the Bisq decentralized bitcoin exchange network. Their contributions involved making stateless `BSFormatter` functions static, removing dead code, and extracting specific functions to separate `DisplayUtils`, `ParsingUtils`, and `FormattingUtils` classes. These changes indicate an effort to improve code organization, reduce coupling between modules, and establish clear separation of concerns within the project's codebase. Furthermore, the user extracted Currency related helpers to CurrencyUtils.
exchangep2pdecentralizedbisqcryptocurrency
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