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John McCall

John McCall

Humanism through technology

Brooklyn, New York, US
+1 (413) 297-2788
English

Background


About

About

Reliability and data engineer focused on observability, scalability, and performance. I take ownership of the systems I build and lead with transparency and accountability. Known as a servant leader who enables teams to move faster and with greater confidence. Open source contributor, see GitHub for recent work. Open to fractional or mission-driven roles.

Work Experience

Work Experience

  • Staff Site Reliability EngineerHouse Rx

    Mar, 2023 - Oct, 20252 years 6 months

    • Managed geo-distributed multidisciplinary team

    • Owned infrastructure, reliability, and release management for a PHI-regulated platform on Kubernetes

    • Maintained and extended self-hosted LGTM observability stack (Loki, Grafana, Tempo, Mimir)

    • Automated CI/CD and dependency management with GitHub Actions and Terraform

    • Led incident management process redesign, improving MTTR and postmortem quality

  • Senior Database EngineerCollectors

    Sep, 2022 - Mar, 20236 months

    • Supported infrastructure and reliability efforts across cloud-hosted systems

    • Developed full hackathon project upgrading PSA slab QR codes with 4× resiliency to surface damage, including benchmarking suite and performance analysis

  • Senior Database Reliability EngineerFlatiron Health

    May, 2020 - Aug, 20222 years 3 months

    • Co-led AccessAbility ERG to improve accessibility and inclusion across engineering

    • Created and maintained open-source sqlserver Ansible collection (100k+ downloads) to automate and scale client database management

    • Implemented a novel SQL Server cloning approach enabling ephemeral branch deployments of the oncology platform

    • Optimized AWS storage configurations during internal hackathon, saving over $80k annually

  • Data Engineerjet.com / Walmart eCommerce

    Apr, 2019 - May, 20201 year 1 month

  • Application Database AdministratorJetBlue Airways

    Jul, 2017 - Mar, 20191 year 8 months

    • Managed remote contractors

  • Database AdministratorNew Classrooms (non-profit)

    Apr, 2015 - Aug, 20172 years 4 months

  • Database AdministratorArup

    Jul, 2014 - Apr, 20159 months

  • Technology Analyst / DBAJPMorgan Chase

    Jun, 2011 - Jul, 20143 years 1 month

Projects Experience

Projects Experience

  • mentalhealth.day

    Feb, 2023 - Present

    😌 Share this site as your status, out of office email, or on social media when you take a self-care day to normalize and destigmatize mental health (https://mentalhealth.day).

  • lowlydba/sqlserver

    Apr, 2022 - Present

    🥄 A cross-platform Ansible collection using PowerShell to configure and maintain SQL Server. Included in the official Ansible community collection.

Skills

Skills

  • Databases & Data Systems

    SQL Server (Always On, HA/DR)

    Amazon RDS

    PostgreSQL

    MySQL

    MongoDB

    Query Optimization

    Performance Tuning

    Replication & Backup Strategy

  • SQL Development & Testing

    T-SQL / ANSI SQL

    dbt

    Data Modeling

    ETL Design

  • Programming & Automation

    Python (automation, data pipelines)

    TypeScript / JavaScript

    Node.js

    Infrastructure as Code / IaC

  • Scripting & Tooling

    PowerShell / PowerShell Core

    bash

    Linux System Administration

    Windows Server Automation

  • SRE / DevOps / Platform Engineering

    Kubernetes (EKS / AKS)

    kustomize

    Serverless

    Helm

    Terraform

    Containers

    LGTM (Loki, Grafana) & Prometheus

    Architecture

    Ansible

    GitHub Actions

    Jenkins

    AWS / Azure / GCP

    Monitoring & Observability (DataDog, New Relic, Sentry)

    Incident Management

    Airflow

    YAML / JSON

    Git

Education

Education

  • Information Technology w/ concentration in Databases, BS, Rochester Institute of Technology

    Sep, 2008 - May, 2012

Certificates

Certificates