Daniel Perrefort

Software Engineer / Mountain Climber

About

I'm a quality-driven software engineering professional with 10+ years of experience in developing scalable solutions, leading cross-functional teams, and leveraging modern technologies to drive innovation.

As an active adventurer and alpine mountaineer, I'm currently working to climb the highest points in all 50 US states. Whether working with a team of climbers or a team of developers, I bring a collaborative spirit, a strategic mindset, and a relentless drive to overcome challenges and achieve goals.

Technical Skills

The following list highlights some of the technologies I use in my current role.

  • Languages: Python, JavaScript, Java, Bash, Lua, SQL, PromQL
  • HPC Tools: Slurm, Lmod, Spack, CMake, Make
  • Containerization: Docker, Podman, Singularity/Apptainer, Compose, Kubernetes
  • Automation: Git, GitHub, GitHub Actions, Jenkins, Travis CI, Terraform, Ansible
  • Cloud: Google Cloud Platform (GCP)

Experience

Design and Delivery

Extensive experience developing software to meet detailed project requirements and design conditions.

Diverse Project Experience

Comforatable working in diverse software ecosystems to build web, API, and command-line based software tools.

Data-Driven Communication

Expert in maximizing data-driven communication to collaborate effectively with diverse, cross-disciplinary teams.

Quality Driven Development

Well versed in managing comprehensive test suites and QA standards using a variety of modern frameworks.

DevOps and Automation

Design DevOps strategies at scale, including CI/CD automation and infrastructure management.

Resume

Professional Experience

DevOps / Software Engineering Lead

Dec 2023 - Present

University of Pittsburgh, Pittsburgh, PA

  • Lead design, development, and deployment of HPC services including LLM hosting and resource accounting platforms.
  • Implement automation pipelines for deployment, monitoring, and maintenance of scientific software environments.
  • Mentor team members in software development, containerization, and workflow orchestration.
  • Maintain observability stacks for HPC performance and reliability.

Research Software Consultant

June 2021 - Dec 2023

University of Pittsburgh, Pittsburgh, PA

  • Consult with researchers to deploy and optimize scientific software across HPC and cloud environments.
  • Deliver workshops on software engineering principles: CI/CD, version control, testing, containerized workflows.
  • Lead technical debt remediation projects, improving reliability and reducing legacy software debt.

Graduate Research Assistant

Aug 2015 - May 2021

University of Pittsburgh, Pittsburgh, PA

  • Developed scalable web, API, and command-line tools for scientific workflows.
  • Optimized code for reproducibility, maintainability, and operational efficiency.
  • Collaborated with engineers to design cloud-backed HPC systems for large-scale instrumentation and data analysis.

Education

Ph.D. - Astrophysics and Cosmology

2021

University of Pittsburgh, Pittsburgh, PA

M.S. - General Physics

2017

University of Pittsburgh, Pittsburgh PA

B.S. - Applied Physics

2014

University of Connecticut, Storrs CT

Professional Organizations

Dark Energy Science Collaboration

Full Member

Planning projects, managing junior personnel, building software, and analyzing data to support the world’s largest optical telescope.

UConn Student Leadership Board

Alumni Mentor

Mentor UConn undergraduate students on professional networking and career goals.

  • Alumni Mentor: 2022 - 2023
  • Board Member: 2014 - 2015

Travel

I get to work with an amazing team of individuals from around the globe. Here are some recent workshops I've attended along with their official workshop photos (where available).

2025

  • November: Super Computing 2025
  • July: Practice and Experience in Advanced Research Computing
  • March: Nvidia GTC (San Jose)

2024

  • Atlanta: Super Computing 2024

2023

  • November: Super Computing 2023
  • July: Practice and Experience in Advanced Research Computing

2022

  • November: Super Computing 2022
  • August: Rubin Observatory Project and Community Workshop
  • August: Dark Energy Science Collaboration Bi-Annual Meeting
  • February: Dark Energy Science Collaboration Bi-Annual Meeting

2021

  • November: Super Computing 2021
  • November: LSST Broker Technical Workshop
  • August: Rubin Observatory Project and Community Workshop
  • July: Dark Energy Science Collaboration Bi-Annual Meeting
  • Apr: LSSTC Enabling Science Broker Workshop - Part II
  • Feb: Dark Energy Science Collaboration Bi-Annual Meeting

2020

  • Oct: LSSTC Enabling Science Broker Workshop - Part I
  • August: Rubin Observatory Project and Community Workshop
  • July: Dark Energy Science Collaboration Bi-Annual Meeting
  • Jan: Dark Energy Science Collaboration Meeting

2019

  • Sep: TOM Toolkit Workshop
  • Sep: Midwest Workshop on Supernovae and Transients
  • Aug: LSST Project and Community Workshop
  • Jul: Coordinated Theoretical-Experimental Project on QCD
  • Jul: Dark Energy Science Collaboration Meeting
  • May: PITT-PACC Phenomenology Symposium
  • Feb: Dark Energy Science Collaboration Meeting
  • Feb: Dark Energy Science Collaboration Broker Workshop
  • Feb: UConn Astro-Lunch Seminar Series
  • Jan: The Future of SN Host Galaxy Studies

2018

  • Oct: LSST / DESC Calibration Workshop
  • Sep: Phipps Science Communication Workshop
  • Jul: Dark Energy Science Collaboration Meeting
  • Jun: Data Visualization and Exploration in the LSST Era
  • May: PITT-PACC Phenomenology Symposium
  • May: LSST Data Science Fellowship Workshop
  • Apr: New Advances in NIR Type Ia Supernova Science
  • Feb: Dark Energy Science Collaboration Meeting

2017

  • Jul: Sci-Coder Development Workshop
  • Jun: Summer School in Statistics for Astronomers
  • May: PITT-PACC Phenomenology Symposium