Paul Haefeli

SELECT * FROM paul.experience;

Support Escalation Engineer - Azure Database for PostgreSQL/MySQL

Microsoft

February 2022 – Present

  • Provide escalation support for Azure Database for PostgreSQL/MySQL/MariaDB (PaaS)
  • Mentor engineers, improve internal guides, and author/edit public documentation
  • Collaborate with product teams to validate hotfixes and test preview features
  • Team Lead, review escalations and align team performance with organizational goals

Support Escalation Engineer - SQL Server

Microsoft

June 2020 – February 2022

  • Lead critical SQL Server escalations and reduce downtime and time to resolution
  • Partner with engineering to reproduce defects and deliver hotfixes
  • Train peers on advanced SQL Server diagnostics using WinDbg
  • Debug SQL Server (C++) and SQL Server Management Studios (C#), file bug fixes

Support Engineer - SQL Server

Microsoft

March 2017 – June 2020

  • Support enterprise SQL Server environments on-prem, virtualized, and on Azure VMs (IaaS)
  • Implement HA/DR solutions: AlwaysOn, clustering, replication, mirroring, log shipping
  • Optimize queries, indexes, and memory management, to improve performance
  • Troubleshoot concurrency, memory, and SQL OS issues; support specialized features like Service Broker and In-Memory OLTP, and FullText search

Database Administrator

Innovation Group

January 2020 - March 2020

  • Led SQL Server AlwaysOn Availability Group implementation project
  • Managed QA/UAT/Dev/Prod patch testing and deployments using JIRA, ensuring smooth releases with minimal disruption
  • Monitored and tuned SQL Server instances, proactively resolving blocking and deadlock issues to maintain 99.9% uptime

Support Engineer - SQL Server

Convergys (Microsoft)

September 2015 - January 2017

  • Supported commercial customers as a Microsoft vendor; resolved complex SQL Server escalations under ITIL-based incident management and strict SLA timelines

Technical Service Representative | Project Lead

Alliant Systems

January 2013 – September 2015

  • Led nationwide client implementations, upgrades, and training
  • Developed custom T-SQL reports improving financial reporting
  • Implemented backup/restore and maintenance tasks for SQL Servers
  • Provide customer support related to using and fixing the software
  • Partnered with developers on feature design based on client feedback