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Senior BizOps Engineer

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Mastercard

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Location:
Poland , Warsaw

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

Not provided
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Job Description:

The Biz Ops team is looking for a Senior Site Reliability Engineer (SRE). Biz Ops is responsible for production readiness of Mastercard products, ensuring platform stability and health. As an SRE, you will empower developers to build resilient products, support operational design, automation, capacity planning, and monitoring. You help set and enforce operational standards and foster an agile, learning culture.

Job Responsibility:

  • Ensure reliability, scalability, and performance of Mastercard applications
  • Support daily operations with a focus on triage, root cause analysis, and blameless post-mortems
  • Engage early in the development lifecycle to proactively manage production and change activities
  • Manage risk, compliance, and security across all environments
  • Align product and customer priorities with operational needs through continuous feedback

Requirements:

  • Proficient in navigating Linux systems (CLI, directory structure, permissions)
  • Process management (ps, kill, priorities, load analysis)
  • Resource monitoring (CPU, RAM, I/O, disks) – tools like top, htop, vmstat, iostat
  • Basic Windows administration
  • knowledge of shell scripting (Bash, PowerShell)
  • Ability to create scripts in Bash, Ansible, Python, or Perl
  • Experience managing Linux and Windows instances
  • Ability to create technical documentation
  • Previous experience in on-call rotation is appreciated
  • Skilled in searching and filtering (grep, awk, sed)
  • Sorting, aggregation, and pipeline processing
  • Correlating events in application and system logs
  • Basic network traffic analysis (tcpdump, netstat)
  • Understanding of TCP/IP, DNS, routing, firewalls, load balancers
  • Knowledge of protocols and API design patterns (TCP, HTTP, TLS, JSON, MTLS, oAuth2)
  • High availability and resilience concepts (clustering, failover, scaling, load balancing)
  • Understanding F5 load balancers (GUI configuration, pools, members, vservers, monitors)
  • Git – repository management, conflict resolution
  • Jenkins – running and modifying jobs
  • Ansible, Chef, Terraform – automation and provisioning
  • Splunk – data search and analysis
  • Familiarity with monitoring tools: Zabbix, Grafana, Dynatrace
  • Familiarity with documentation tools: Confluence
  • Ability to write PL/SQL queries (SELECT, JOIN, filtering)
  • Experience with Oracle or Postgres databases
  • Certificate management: issuance, renewal, keystore, truststore, bundle creation
  • Understanding of PKI
  • Ability to work independently and analytically
  • Problem-solving in production environments
  • Communication with development and operations teams
  • Basic ITIL exposure

Additional Information:

Job Posted:
January 02, 2026

Expiration:
February 28, 2026

Employment Type:
Fulltime
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