Infrastructure Migration Engineer (f/m/x)
Offer summary

(Summary generated by AI based on the full job description)

The project involves VMware environment migration, focusing on moving virtual machines from legacy VMware to VMware Cloud Foundation 9.1. Key technologies include VMware vSphere, vCenter Server, ESXi, HCX vMotion, NSX-T. Responsibilities cover end-to-end migration support, readiness validation, early issue detection, troubleshooting, documentation, and network team collaboration. Required experience includes production VMware migrations and expertise in VMware Cloud Foundation and HCX tools.

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Infrastructure Migration Engineer (f/m/x)

Company: Sii Sp. z o.o.

from: 12 August 2026
to: 11 September 2026
salary not specifiedB2B contract
Offer parameters
level:senior
working mode:remote • hybrid • full office
Bydgoszcz, Kuyavia-Pomerania
Bydgoszcz, Kuyavia-Pomeraniaplac Kościeleckich 3View on map

Requirements

Expected technologies

Vmware
VMware VSphere
VCF 9.1
HCX migration skills

Optional technologies

VCF
Cisco

Our requirements

  • Minimum 5 years of experience in VMware platform environments, with strong hands-on experience in VMware vSphere, vCenter Server, and ESXi
  • Proven experience migrating production virtual machines between VMware environments, ideally across multi-cluster, multi-site, or multi-tenant platforms
  • Strong understanding of vMotion, Storage vMotion, DRS, HA, resource pools, clusters, datastores, VM hardware versions, VMware Tools, vDS networking, port groups, and VMkernel networking
  • Ability to interpret vCenter and ESXi events, tasks, alarms, logs, and migration failure messages to diagnose migration issues quickly
  • Good understanding of storage impacts during migration, including datastore capacity, disk consolidation, thin/thick provisioning, snapshots, CBT, backup interaction, high-change-rate workloads, and storage latency
  • Essential VMware Cloud Foundation 9.1 skills, including understanding management domains, workload domains, SDDC Manager, and lifecycle management
  • Hands-on experience with VMware HCX or VCF workload mobility tooling and experience deploying, configuring, validating, or operating HCX Connector/source-side manager and HCX Cloud/target-side manager
  • Fluent English

Optional

  • Experience with VCF Operations, VCF Automation, vSAN, HPE Alletra, Cisco UCS, Commvault, Veeam, or equivalent operational tooling
  • Previous experience in a service provider, managed cloud, private cloud, or multi-tenant platform environment

Your responsibilities

  • Supporting the end-to-end migration of virtual machines from legacy VMware ESXi/vSphere environments into VMware Cloud Foundation 9.1 workload domains
  • Executing migrations using the most appropriate method for the workload, primarily using HCX vMotion
  • Validating source and destination readiness before migration activity, including vCenter, ESXi, storage, network, HCX, NSX-T, DNS, monitoring, backup, and application owner dependencies
  • Identifying migration blockers early, including unsupported VM configurations, active snapshots, stale VMware Tools, RDMs, high-change-rate disks, network/firewall constraints, storage constraints, application dependencies, and backup conflicts
  • Grouping workloads into sensible migration waves based on application dependencies, network segments, business criticality, maintenance windows, customer impact, and rollback options
  • Supporting pre-migration, migration, and post-migration validation, including power-on checks, console access, network reachability, application validation, monitoring status, backup status, and operational handover
  • Working with NSX-T networking teams to validate NSX segments, overlay networking, Edge connectivity, BGP, Distributed Firewall policy, Gateway Firewall policy, NAT, and network extension boundaries
  • Troubleshooting migration issues across vCenter, ESXi, HCX, NSX-T, vMotion, vSphere Replication, storage, network latency, firewall, DNS, guest OS, VMware Tools, and application layers
  • Producing and maintaining accurate migration documentation, including migration trackers, wave status, failed migration attempts, risk/issues, workaround details, post-migration checks, and lessons learned
Company

About the project

We are looking for a skilled Infrastructure Migration Engineer to join our team, supporting a migration program that focuses on transitioning virtual machines from legacy VMware environments into VMware Cloud Foundation 9.1 workload domains. This role requires a strong understanding of VMware technologies and migration practices, and may involve planned activities outside of core business hours, including evenings and weekends for migration preparations and validations. If you are passionate about working with cutting-edge cloud technologies and ensuring application availability during migrations, this opportunity may be the right fit for you.

What we offer

  • Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas
  • Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market
  • We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022
  • Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more
  • Comfortable workplace – class A offices or remote work
  • Dozens of fascinating projects for prestigious brands from all over the world – you can change them thanks to Job Changer application
  • PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers
  • Investment in your growth – meetups, webinars, training platform and technology blog – you choose
  • Fantastic atmosphere created by all Sii Power People

Recruitment stages

  • 1.
    Send your CV
  • 2.
    Talk to us about your expectations
  • 3.
    Learn more about our projects and choose the best
  • 4.
    Start your adventure with Sii!

Sii Sp. z o.o.

Sii is the leading technology consulting, digital transformation, engineering, and business services vendor in Poland. We already employ more than 7 300 professionals and implement projects in a variety of industries for clients from many countries around the world. The Great Place to Work title, won 10 times in a row, proves that at Sii, we create a friendly work environment.
Sii ensures that all employment-related decisions are made solely on the basis of qualifications and competencies. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promoting a diverse and inclusive work environment.

This is how we work

Infrastructure Migration Engineer (f/m/x)
I apply to:
Sii Sp. z o.o.
Bydgoszcz, Kuyavia-Pomerania
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