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Topics

Development

Featured in Development

What I Wish I Knew When I Started with Green IT

Ludi Akue discusses how the tech sector’s rising emissions impact our global climate goals. Drawing from her experience as a CTO, she explains seven key lessons for implementing Green IT. She shares insights on LCA assessments, the paradox of microservices, and why FinOps doesn’t always equal green.

All in development

Architecture & Design

Featured in Architecture & Design

So You’ve Decided To Do a Technical Migration

Sophie Koonin discusses the realities of large-scale technical migrations, using Monzo’s shift to TypeScript as a roadmap. She explains how to handle "bends in the road," from documentation and tooling to setting measurable milestones. Sophie shares vital lessons on balancing technical debt with feature work and provides a framework for deciding if a migration is truly worth the effort.

All in architecture-design

AI Infrastructure

Featured in AI, ML & Data Engineering

4 Patterns of AI Native Development

Patrick Debois discusses the evolution of software engineering in the age of AI. He shares four key patterns: transitioning from producer to manager, focusing on intent over implementation through spec-driven development, moving from delivery to discovery, and managing agentic knowledge. He explains how these shifts redefine seniority, team roles, and the future of the DevOps workflow.

All in ai-ml-data-eng

Culture & Methods

Featured in Culture & Methods

Achieve Optimal Efficiency for Your Developer Experience Teams

Fabien Deshayes discusses the strategies behind Monzo’s Developer Velocity squad. He explains the "Platform as a Product" mindset, emphasizing the need for engineers with product acumen and tenure. He shares actionable frameworks for measuring DevEx impact through time, money, and cognitive load, demonstrating how a small, focused team can drive massive results in a regulated environment.

All in culture-methods

DevOps

Featured in DevOps

Change as Metrics: Measuring System Reliability Through Change Delivery Signals

System changes are the primary driver of production incidents, making change-related metrics essential reliability signals. A minimal metric set of Change Lead Time, Change Success Rate, and Incident Leakage Rate assesses delivery efficiency and reliability, supported by actionable technical metrics and an event-centric data warehouse for unified change observability.

All in devops

Events

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InfoQ Architect Certification

Join Luca Mezzalira for this 5-week online cohort. Master socio-technical architecture leadership.

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QCon London 2026

Learn what works in AI, architecture, data, security & FinTech.

Early Bird ends March 10.

Learn how leading engineering teams run AI in production—reliably, securely, and at scale.

Early Bird ends March 10.

QCon San Francisco

Learn what's next in AI and software, from teams already doing it.

Early Bird ends March 10.

InfoQ Homepage Interviews Nick Kallen Discusses Scala at Twitter

Nick Kallen Discusses Scala at Twitter

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18:09

Bio

Nick Kallen is a Systems Engineer at Twitter. He is the author of Arel, NamedScope, Cache Money, and Screw.Unit; and a co-creator FlockDb, Twitter's distributed graph database.

About the conference

QCon is a conference that is organized by the community, for the community.The result is a high quality conference experience where a tremendous amount of attention and investment has gone into having the best content on the most important topics presented by the leaders in our community.QCon is designed with the technical depth and enterprise focus of interest to technical team leads, architects, and project managers.

Mar 02, 2011

Interview with

Nick Kallen

by

Randy Shoup

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