Windows Engineer - M365 and Infrastructure Delivery

Persistent Systems; Greater London; Hybrid; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Flexible work hours

Long Service awards

Insurance coverage

Employee engagement events

Job summary

Persistent Systems is hiring a Windows Engineer - M365 and Infrastructure Delivery. This hybrid role targets professionals with 5–15 years of experience in Windows/M365 engineering and enterprise infrastructure.

You will design, implement and secure Microsoft 365, Entra ID, Power Platform, and gateway deployments across global data centers, while aligning with DR, patching and governance standards. Join a fast-growing, globally distributed team supporting regulated industries with advanced data

Qualifications

• Experience with Windows Server 2022, build, hardening and patching in enterprise environments.
• Strong Microsoft 365 administration including Entra ID and Purview basics.
• Hands-on RBAC, service principals and secure identity management.
• PowerShell automation for Windows and cloud platforms.
• Fabric administration and monitoring across tenants and workspaces.

Responsibilities

• Develop Low-Level Design, build specs and configuration docs for Windows/M365 components.
• Define secure build standards, runbooks, patching and evergreen procedures; ensure DR readiness.
• Configure and validate Power BI gateway clusters across Production and Non-Production.
• Manage Entra ID groups, service principals and application permissions for admin tasks.
• Coordinate with Network/Security for proxies, firewalls, DNS, and cloud connectivity.
• Support vulnerability remediation, patching, certificates, and change processes.
• Provide knowledge transfer and 3rd-line support during transitions.

Skills

Windows Server 2022

M365 administration

Entra ID

RBAC

PowerShell

Fabric administration

Security & monitoring

Active Directory

Tools

Jenkins

Bitbucket

Nexus

REST APIs

Job description

We are an AI-led, platform-driven Digital Engineering and Enterprise Modernization partner, combining deep technical expertise and industry experience to help our clients anticipate what’s next. Our offerings and proven solutions create a unique competitive advantage for our clients by giving them the power to see beyond and rise above. We work with many industry-leading organizations across the world, including 20 Fortune 50 companies and 4 of the 5 top banks in both the US and India, and numerous innovators across the healthcare ecosystem.

Our disruptor’s mindset, commitment to client success, and agility to thrive in the dynamic environment have enabled us to sustain our growth momentum. Persistent has been recognized across top industry platforms for innovation, leadership, and inclusion. We have delivered 21 sequential quarters of growth with $389.7M in Q1 FY26 revenue, up 3.9% Q-o-Q and 18.8% Y-o-Y growth. Our 25,000+ global team members, located in 18 countries, have been instrumental in helping the market leaders transform their industries. We have been named the fastest-growing Indian IT services brand in the “Brand Finance India 100” 2025 report. We were also cited as a Leader in the ISG Provider Lens 2025 for Digital Engineering Services 2025 and the Everest Group Talent Readiness for Next-generation Application Services PEAK Matrix Assessment 2025.

We are fast growing company (with $1 billion dollars in revenue). Plan to grow at Krakow, Poland. If you’re interested in working on bleeding Data and AI technologies, join us.

Read more - https://www.persistent.com/

About Position and details:

• Role: Windows Engineer - M365 and Infrastructure Delivery
• Mode: Hybrid
• Experience: 5 to 15 years
• Job Type: Permanent role

Key responsibilities

• Develop the Low-Level Design, build specification and configuration documentation for the Windows and Microsoft 365 components identified in the Power BI HLD.
• Create secure build standards, operational runbooks, patching and evergreening procedures, monitoring requirements, housekeeping tasks and support documentation.Including integration into core infrastructure
• Implement separate Power BI gateway clusters for Production and Non-Production, spanning GB and US data centers, including local node resilience and controlled DR activation.
• Engineer Microsoft Entra ID groups, service principals, application permissions and role-based access required for tenant, workspace, application, gateway and deployment administration.
• Configure and validate Microsoft Fabric / Power BI tenant and workspace controls across DEV, SIT, UAT and PROD, ensuring separation between Test and Production tenants.
• Implement Microsoft Purview sensitivity labelling, audit configuration and relevant Microsoft 365 compliance controls for Power BI artefacts and exported content.
• Engineer Power Automate and Power Apps platform configuration as required.
• Work with Network and Security teams to define and validate proxy, firewall, DNS, Zscaler and Forcepoint requirements for user, gateway and cloud-service connectivity.
• Support vulnerability remediation, SCB validation, software patching, certificate and credential lifecycle management and controlled production change.
• Provide knowledge transfer and third-line support to Infrastructure Operations and other BAU support teams during service transition and early-life support.

Key skills and experience

• Strong Windows Server 2022 engineering, build, hardening, patching and troubleshooting experience.
• Hands‑on experience deploying and supporting Microsoft on‑premises data gateway in enterprise or highly controlled environments.
• Solid Microsoft 365 administration experience, including Microsoft Entra ID, Microsoft Purview, Power BI / Fabric administration and Microsoft 365 audit capabilities.
• Experience with Active Directory, group management, service accounts, Windows authentication, Group Policy and domain-joined server design.
• Experience implementing RBAC, least privilege, service principals, OAuth 2.0 and segregated production/non‑production administration.
• Strong understanding of Power BI tenant settings, capacities, workspaces, apps, gateway connections, deployment controls and platform monitoring.
• Experience producing High‑Level and Low‑Level Designs, build guides, security configuration baselines, test plans, implementation plans and operational runbooks.
• Practical understanding of enterprise networking, outbound proxy design, firewalls, DNS, TLS, certificate trust and network segregation.
• Experience integrating Windows and cloud platforms with enterprise monitoring and SIEM tooling such as Splunk and Dynatrace.
• Experience delivering highly available infrastructure across multiple data centres and documenting/test‑driving disaster recovery procedures.
• Strong understanding of change, incident, problem, release and service‑transition processes within a regulated enterprise.
• Ability to collaborate across Infrastructure, M365, IAM, Network, Security, Analytics, Architecture, DevOps and Service Management teams.
• PowerShell scripting and automation for Windows Server, Microsoft 365, Entra ID or Power BI administration.
• Experience with Power Automate, Power Apps and Power Platform administration.
• Experience with Microsoft Fabric administration and Fabric capacity monitoring.
• Knowledge of Jenkins, Bitbucket, Nexus, REST APIs and CI/CD deployment patterns for Microsoft cloud services.
• Experience with Delinea or equivalent privileged-access and secrets‑management tooling.
• Experience with Zscaler, Forcepoint, SailPoint, Qualys, Tanium or Trellix in an enterprise environment.
• Experience working in financial services or another highly regulated industry.
• Knowledge of DirectQuery, semantic models and row-level security sufficient to support platform connectivity and access troubleshooting.
• Low-Level Design and build specification for Windows Server gateway nodes and Microsoft 365 platform configuration.
• Production and non‑production gateway clusters built, tested and documented.
• Entra ID groups, administrative roles, service principals and access model implemented and evidenced.
• Power BI / Fabric tenant, workspace, Purview, audit and monitoring settings configured and documented.
• Network, proxy, firewall, DNS and security dependencies validated with relevant teams.
• HA, DR, patching, upgrade, recovery, monitoring and operational runbooks completed.
• Test evidence, as‑built documentation, CMDB inputs and BAU handover completed.

Qualifications / certifications

• Relevant Microsoft certification such as Windows Server Hybrid Administrator Associate, Azure Administrator Associate, Identity and Access Administrator Associate or Power BI Data Analyst Associate is desirable.
• ITIL Foundation or practical experience working within ITIL‑aligned service‑management processes is desirable.
• Competitive salary and benefits package
• Culture focused on talent development with quarterly promotion cycles and company-sponsored higher education and certifications.
• Opportunity to work with cutting‑edge technologies.
• Employee engagement initiatives such as project parties, flexible work hours, and Long Service awards
• Insurance coverage: group term life, personal accident, and Mediclaim hospitalization for self, spouse, two children, and parents

Let’s unleash your full potential at Persistent - persistent.com/careers.

Persistent is an Equal Opportunity Employer and prohibits discrimination and harassment of any kind.