Experience — Maciej Strzelecki

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Resume created on DoYouBuzz

Experiences

DevOps support for inhouse dev team and multiple 3rd party game studios
Deployment via Helm/Kubernetes, Terraform, CloudFormation
Monitoring via SignalFX, Prometheus, Sumologic

Rewrite of legacy monitoring solution built on multiple cacti, zabix, icinga intances into a cluster of prometheus and grafana servers with pagerduty handling escalations
Rewrite of legacy Puppet server provisioning using SaltStack

Extensive automation of server provisioning and configuration.
Redesigning the platform around containers run via Apache Mesos and Kubernetes.
Developing tools with Python and Go
Monitoring, graphing, alerting and emergency on-call

Extensive automation of server provisioning and configuration.
Redesigning the platform around containers run via Apache Mesos.
Developing tools with Python and Go
Monitoring, graphing, alerting and emergency on-call

Refining deployment solutions
Development support

Monitoring, management, backup and security of Delivery Hero Holding food platform servers
Emergency reaction on-call
Configuring linux machines for designated roles and securing access. Writing chef recipes and munin/nagios plugins. Automatizing day to day sysadmin tasks. Creating systems' documentation especially troubleshoot / debug sections. Designing redundant service setups - ip failover, vrrp, clustering, mirroring, master/slave replication. Multi-level backup schemes

Supporting developer teams with deployment tooling and workflow
Performance testing
Handling code deployments to live, staging and lab environments

Design and implementation of international food ordering platform

Development of small and medium sized C# applications (desktop and server-client architecture). Among others - a Taxi Fleet system
Developing web application and web services using python/django/twisted and PHP/Cake frameworks. CMSes, online shop implementations, auction system and others
Linux server administration of Debian, Ubuntu, CentOS. Firewall configuration (iptables, Vyatta). Security hardenning, scripting in bash and python

Fulfill administrative tasks in area-specific computer systems of Polish Postal Service.
Helping users with OS and application problems. Fixing simple hardware malfunctions, restoring data

Building proprietary hotel management software.
Integrating Comarch ERP Optima into small to medium sized company
Developing database connectors, allowing migrating financial data between applications