Duncan Mac-Vicar P.

Critic
DISC Type : C

Director, Core Engineering at LocalStack

Germany

Overview

Duncan is a software engineering leader with over 20 years of experience, specializing in building and managing distributed teams. He holds an MSc from Pontificia Universidad Católica de Chile and is recognized for his numerous open-source contributions. People who have worked with him describe him as both passionate and talented.

Outside of his formal roles, Duncan is deeply engaged in the open-source community, having started multiple projects and contributed to major ones like Salt and Spacewalk. His personal blog reveals interests in restoring vintage computers, exploring new software technologies like Wireguard and Litestream, and playing guitar.

He started the Kopete multi-protocol chat client, which became the second most popular messenger in the Linux world at the time.

Personality Overview

ROI Driven

Critic

Objective Thinker

They are quite likely to negotiate on pricing or other key terms.  They enjoy working alone and do not rely on others very often. They prefer to do logical analysis and value evidence over emotions.

Topics They Care About

Open-Source Leadership
He has a long history of creating and contributing to high-impact open-source projects, including a Terraform provider with over 1. 6k stars on GitHub.
Distributed Systems
His career focuses on building and running international/distributed teams and he shows interest in technologies for resilient and performant distributed applications like Litestream.
AI-driven Workflows
He has recently shared experiments at LocalStack involving self-healing workflows using AI agents, indicating a current focus on operational AI.

Media Appearances

Duncan has no verified media appearances

Work History

6-2025
Director, Core Engineering at LocalStack
5-2023 - 5-2025
VP of Engineering at refurbed
4-2022 - 5-2023
Director Of Engineering at refurbed
7-2021 - 3-2022
Engineering Lead at refurbed
3-2021 - 6-2021
VP of Engineering at CodeNotary

Education

2004 - 2005
MSc. from Pontificia Universidad Católica de Chile
1998 - 2004
Industrial Civil Engineer from Pontificia Universidad Católica de Chile

More Information

Social Presence :

Prographics :

Exp : 20 Location : Germany Job Level : Mid-senior Designation : Director, Core Engineering at LocalStack
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Insights For Selling To Duncan

During A Call Or A Meeting

DO's

  • Leverage facts and figures wherever possible; use percentages, numbers etc.
  • Don’t forget to mention how you compare to competition on both features and pricing
  • If you can, show them industry reports or analyst comments instead of sharing anecdotal stories

DONT's

  • Make extra effort to not seem pushy or confrontational
  • Avoid pushing them too much to involve other stakeholders unless it is critical
  • Do not use very emotional or colorful language

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Duncan is

  • Strong evidence of ROI, effective pricing, and proven data points matter the most to them.
  • Will you ever get a clear answer from Duncan

  • It is not very hard for them to say no if they are not convinced about the decision.

Insights For Deal Planning

    How fast (or slow) will Duncan move?

  • They are neither the fastest nor the slowest decision makers, they are somewhere in the middle.
  • Can Duncan take some risk or not?

  • They can bear some risk if their analysis backs the decision.

You And Duncan

Personality Compatibility


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