Director of Engineering

Christian
Romney

U.S. Market @ Nu — building scalable systems and building high-performance teams and scalable systems trusted by over 130 million customers worldwide.

View my work LinkedIn →
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// about

Engineering at Scale

I'm an engineering leader with 25+ years of experience building systems and teams that last. I'm currently the Director of Engineering for the U.S. market at Nu and based out of Miami.

Nu started with a simple idea: financial services shouldn't be complicated or exploitative. Today, over 130 million people trust us with their money, including 29 million who got their first-ever credit card through Nu. I'm building the engineering organization that will bring that mission to the United States.

Years experience
25+
Customers served
130M+
OSS repositories
32+
Languages spoken
3
English Spanish Portuguese
// skills

What I Work With

// languages
Languages & Frameworks
  • Clojure / ClojureScript
  • Datomic
  • Ruby on Rails
  • JavaScript
  • Python
// leadership
Engineering Leadership
  • Team Building
  • Technical Strategy
  • Engineering Culture
  • Mentorship
  • Talent Development
// architecture
Systems & Architecture
  • Distributed Systems
  • Microservices
  • Functional Programming
  • API Design
  • System Scalability
// community
Open Source & Community
  • 32+ GitHub Repos
  • Pedestal Contributor
  • O'Reilly Contributor
  • Technical Writing
  • Podcast Co-Host
// selected work

Projects & Contributions

Pedestal Framework
Core Contributor · 2013–2015

Contributed to Pedestal, a Clojure web framework designed for building data-driven server-side applications and APIs. Focused on interceptor chains and server-sent events.

clojure open source web framework
View on GitHub →
O'Reilly Rails Cookbook
Contributing Author · 2007

Contributed practical recipes to the O'Reilly Rails Cookbook — a reference for Ruby on Rails developers covering real-world patterns and solutions.

ruby rails writing
View on O'Reilly →
The Hammock Podcast
Co-Host · 2021–Present

Co-hosting a podcast about software engineering, functional programming, and the craft of building things that matter. Conversations with practitioners who think deeply about their work.

podcast functional programming engineering culture
Listen on Apple Podcasts →
Open Source Tools
32+ Repositories

Libraries, utilities, and experiments across Clojure, Ruby, and JavaScript. Covering everything from data transformation pipelines to developer tooling and web components.

clojure ruby javascript oss
View on GitHub →
// media

Talks & Podcasts

// podcast
The Hammock
Co-Host · 2021–Present

Conversations about software engineering, functional programming, and building things that last. Hosted with Russ Olsen.

Listen →
// podcast
The Cognicast
Co-Host · Multiple Episodes

The Cognicast — a podcast from Cognitect about Clojure, functional programming, and the culture of software craftsmanship.

Listen →
// video
GOTO Unscripted: Functional Programming
With Russ Olsen

An unscripted conversation at GOTO conference about functional programming, why it matters, and how it changes the way you think about building software.

Watch →
// join us in miami
We're hiring engineers
who think differently.

Nu's U.S. team is growing. Clojure, functional programming, distributed systems at scale. If you care about craft and impact, we should talk.

clojure distributed systems miami 130M+ users
View open roles →
// contact
Find me online
LinkedIn linkedin.com/in/christianromney GitHub github.com/christianromney
Let's connect.

I'm always up for a good conversation about functional programming, engineering leadership, and what it takes to build teams that genuinely love their work. If you're thinking about the same problems, reach out.