MineResetLite
Lightweight implementation for automatic mine resets.
Java
12
71
HMSPlugin
Plugin for Hawk's Servers
Java
2
0
Jeremy J Koletar
Mentor
Rising Codementor
US$8.00
For every 15 mins
ABOUT ME
DevOps engineer with 10 years at Facebook and Target, passionate about mentoring developers in infrastructure and reliability.
DevOps engineer with 10 years at Facebook and Target, passionate about mentoring developers in infrastructure and reliability.
Hello! I am a former Facebook Production Engineer, meaning I was tinkering around with systems and software on one of the largest web infrastructures in the world. Now I am out of the 'rat race' and looking to use my skills and experiences to serve others, including you!
I am interested in and passionate about:
- HTTP and Web infrastructure
- TCP/IP, home, and small business networking
- Python
- Linux
- Cloud infrastructure
- System monitoring, scaling, and reliability
Please reach out if you think I can help. Thanks!
Central Time (US & Canada) (-06:00)
Joined November 2024
EXPERTISE
2 years experience
6 years experience
8 years experience
3 years experience
4 years experience
REVIEWS FROM CLIENTS
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SOCIAL PRESENCE
EMPLOYMENTS
Principal Engineer
Target Corporation
2021-10-01-2023-09-01
● Served as company-wide subject matter expert for Content Delivery Network (CDN) configuration and architecture
● Worked with CDN...
● Served as company-wide subject matter expert for Content Delivery Network (CDN) configuration and architecture
● Worked with CDN vendor Fastly on technical alignment, roadmaps, troubleshooting, and new projects
● Created the ‘DDoS Mitigation Tool’, an end-to-end cybersecurity incident response tool for engineering teams which successfully prevented a Major Incident on Target.com in November 2022
● Coded Target's first "Compute@Edge" project, a security program which runs any time someone adds an item to their cart on Target.com
CDN
Cybersecurity
Fastify
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CDN
Cybersecurity
Fastify
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Senior Production Engineer
Facebook
2019-08-01-2021-10-01
- Web Foundation was Facebook's elite team of first responders for severe production incidents
- Investigated and debugg...
- Web Foundation was Facebook's elite team of first responders for severe production incidents
- Investigated and debugged errors in the Facebook PHP web tier, HHVM web server (C++), Proxygen traffic load balancer (C++), and Python automation/scripting
- Served as an on-call for Facebook's massive web tier and hourly continuous deployments
- Engaged and consulted with product teams on design decisions that affect web tier reliability
- Debugged and remediated high severity production incidents, including full site & ad outages
- Initiated an engagement with the Facebook SDK team during a reliability lockdown. Consulted with director-level engineering managers on what works and what doesn't for the web tier
- Coded and updated Chef recipes for fleet-wide diagnostic tools
- Built Python CLI tools to ease operational burdens and add safety guards to risky tasks
Debugging
Infrastructure
Incident management
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Debugging
Infrastructure
Incident management
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Production Engineer
Instagram (Facebook Subsidiary)
2017-02-01-2019-08-01
● Served on a 24/7 on-call rotation supporting Instagram’s web servers and software releases
● Devised and implemented a real-time...
● Served on a 24/7 on-call rotation supporting Instagram’s web servers and software releases
● Devised and implemented a real-time web server load metric which increased server capacity by 2-3% in load tests
● Led cross-functional effort to scale Instagram’s Apache ZooKeeper ensemble, reducing the risk of system outages
● Architected and implemented Instagram’s A/B testing framework integration
Python
Django
Web Servers
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Python
Django
Web Servers
A/B testing
Zookeeper
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