Nathaniel Sales is a CEO and hands-on engineering leader with nine years of experience building secure, infrastructure-focused software and now scaling a healthcare marketing startup, PayIntel, from Boston. He blends applied-physics rigor with backend and security engineering—evident in open-source work on DNS tooling and modern transport protocols (DoH, DoT, DoQ, ODoH) for projects like his q client and contributions to Adguard’s dnsproxy. At PayIntel he leverages AI-driven insights and data-first strategies to simplify digital marketing for healthcare providers, aiming to improve access and community outreach. Nathaniel pairs product leadership with deep protocol-level expertise, giving him a rare ability to translate low-level systems improvements into trustworthy, customer-facing digital experiences.
A tiny command line DNS client with support for UDP, TCP, DoT, DoH, DoQ and ODoH.
Role in this project:
Backend Developer
Contributions:32 releases, 6 reviews, 192 commits in 1 year 10 months
Contributions summary:Nathaniel primarily contributed to the development of a command-line DNS client. Their work involved implementing core functionality, including parsing command-line arguments, handling different DNS query types, and integrating various DNS transport protocols like UDP, TLS, and HTTP. The user also added features like support for DNSSEC, output formatting, and integration with ODoH. The contributions show a focus on building a functional and feature-rich DNS client.
Simple DNS proxy with DoH, DoT, DoQ and DNSCrypt support
Role in this project:
Back-end Developer
Contributions:3 reviews, 23 commits, 3 PRs in 5 days
Contributions summary:Nathaniel primarily contributed to the `dnsproxy` project by implementing features related to DNS-over-QUIC (DoQ). Their work included modifying the code to support EDNS0 TCP keepalive checks, updating the ALPN token, and adjusting the port used for DoQ. They also made changes to upstream configurations, including adding options for disabling TLS certificate verification and extracting bootstrap DNS and timeout settings.
dns-over-tlsgolangproxydnsdnscrypt
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Nathaniel Sales - Chief Executive Officer at Payintel