Rafael Justo
Principal Software Developer at Teamwork.com
Cork, Ireland
Summary
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Rockstar🎓
Top SchoolRafael Justo is a Principal Software Developer with 14 years of experience, based in Cork, Ireland, currently leading the development of the Teamwork Projects API in Go. He specializes in large-system deployment and software performance with deep systems-level experience across Linux and FreeBSD, and fluency in Go, C/C++ and Python. Earlier work at NIC.br combined DNS engineering (including DNSSEC and HSM integration), registry and payment-system development, and public-facing teaching on DNS and security. Rafael is an active open-source contributor—his patches to miekg/dns added DNS-over-TLS support and robustness improvements, and he enhanced go-gorp to support expanded slice arguments in mappers—showing a knack for practical, protocol-level improvements. He pairs technical depth with an MBA in IT, bringing both architectural vision and operational pragmatism to production systems.
14 years of coding experience
15 years of employment as a software developer
Bachelor, Computer Science, Bachelor, Computer Science at Pontifícia Universidade Católica de São PauloMaster of Business Administration (M.B.A.), Information Technology, Master of Business Administration (M.B.A.), Information Technology at Escola Politécnica da USP
English, Portuguese, Spanish
Stackoverflow
595reputation
71kreached
2answers
8questions
Github Skills (22)
tls1210
tls1310
networking10
mtls10
go10
orm10
dns10
sql10
libtls10
testing9
database-design8
punycode8
amazon-glacier6
apache-kafka6
database6
Programming languages (11)
Github contributions (5)
go-gorp/gorp
Jun 2018 - Oct 2018
Go Relational Persistence - an ORM-ish library for Go
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 4 PRs, 12 comments in 4 months
Contributions summary:Rafael contributed to the `go-gorp/gorp` library, which is an ORM-ish library for Go. Their primary focus was on enhancing the library's functionality, specifically by introducing the ability to expand slice arguments in mappers, enabling more flexible SQL query construction. They also added tests to validate this new feature, ensuring its correct implementation and usage. Furthermore, they extended the functionality to include the same behavior in transactions.
golangishrelationalsqldatabase
miekg/dns
Jul 2015 - Jan 2016
DNS library in Go
Role in this project:Back-end Developer
Back-end DeveloperContributions:21 commits, 4 PRs, 25 comments in 6 months
Contributions summary:Rafael primarily focused on enhancing the `miekg/dns` library, specifically in the area of DNS over TLS support. They implemented features allowing the client and server to establish secure TLS connections, including the addition of a new `Net` attribute and associated TLS configuration options. Additionally, the user addressed code quality by refactoring and renaming functions and variables, which included refactoring IDNA functions, and added error handling for cases with invalid characters. These updates improve the security and reliability of the DNS library.
golangdnsresolverdns-over-httpsdyndns
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