---
title: 'Senior System Engineer at Ensono'
canonical: 'https://feeny.ai/job/senior-system-engineer-ensono-pune-k2ma744rfk8g'
type: 'job'
last_seen: '2026-09-06'
---

# Senior System Engineer at Ensono

- **Company:** Ensono
- **Location:** Pune, India
- **Posted:** 2026-08-25
- **Last confirmed live:** 2026-09-06
- **Apply:** https://ensono.com/company/careers/jobs-board/?gh_jid=4695428005

## Job description

Job Description – AIX L3 System Administrator

## About Us

Ensono is a hybrid IT services provider that sees a world in transformation. We understand the world of business has become more complex, layered, and interdependent because we’re enabling the IT infrastructure for that transformation. Our clients are some of the most innovative and forward-thinking companies in the world and we help keep their businesses thriving. With nearly 50 years of experience, we optimize and modernize IT infrastructure by amplifying the power of mainframes and mid-range servers with the agility of cloud. Check us out at [www.ensono.com.](https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ensono.com%2F&data=05%7C02%7CJennifer.Joseph%40Ensono.com%7Ce601069ca71a4b1335e808dc1c0f8fe5%7Cd483ed84f7bf4078a58ffb250feccf8f%7C0%7C0%7C638416100371036807%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=np2ZJ3pL08ChK%2FWgUB%2FCs1FmCakVjSY5HN%2BqSstWs%2B4%3D&reserved=0)

Job Summary

The AIX L3 System Administrator is responsible for expert‑level administration, engineering, and support of IBM AIX and pSeries environments. This role acts as the highest technical escalation point, owning complex troubleshooting, performance tuning, migrations, virtualization, and lifecycle management while ensuring system stability, security, and availability in mission‑critical environments.

## Key Responsibilities

AIX & pSeries Administration

- Install, configure, administer, and maintain IBM AIX servers in enterprise environments

- Perform AIX OS administration, kernel management, and LVM management

- Manage user administration, security policies, password, and identity management

- Administer system services such as NIS, NFS, Samba, and printer services

Virtualization & Power Platform

- Strong expertise in PowerVM / VIOS, HMC, and AIX virtualization

- Build and administer VIOS servers

- Manage HMC administration and upgrades (Version 9 & 10)

- Deep knowledge of Power8, Power9, and Power10/11 pSeries architectures

- Expert understanding of:

-

## DLPAR

- LPM (Live Partition Mobility)

- Virtual networking

- Virtual storage

- SR‑IOV, vNIC adapters

- Hands‑on experience with NPIV and SAN‑attached storage

Build, Migration & Lifecycle Management

- Perform AIX server build and configuration using best practices

- Manage NIM (Network Installation Manager) for OS deployment and maintenance

- Execute OS patching, upgrades, and VIOS upgrades

- Lead and execute AIX OS migrations: 6.1, 7.1, 7.2, 7.3.

- Perform hardware refresh, storage migration, and platform migrations

- Experience in pSeries hardware commissioning and implementation

Performance, HA & DR

- Analyze resource utilization and system performance

- Perform performance tuning and capacity planning

- Strong experience in storage management, SAN environments, and HA concepts

- Design and support Fault Tolerant systems, Business Continuity, and Disaster Recovery planning

Incident, RCA & Operations

- Act as final escalation point for complex AIX and hardware‑related issues

- Strong in hardware and OS‑level troubleshooting

- Lead Major Incident troubleshooting and RCA

- Perform trend analysis, identify recurring issues, and drive corrective actions

- Coordinate with hardware vendors for issue resolution

- Plan, schedule, and execute changes; coordinate with cross‑functional stakeholders

- Prepare weekly and monthly operational status reports

- Adhere to ITIL processes, quality, and security standards

Automation & Documentation

- Develop Shell / Perl scripts to automate day‑to‑day administration tasks

- Maintain and update technical documentation, SOPs, and knowledge base

- Support continuous knowledge acquisition and documentation updates

Leadership & Collaboration

- Provide technical SME support across projects and operations

- Work closely with application, database, storage, network, and cloud teams

- Communicate effectively with interdisciplinary technical and non‑technical teams

- Work in rotational shifts and on‑call support models

Required Skills & Experience

- 8–12+ years of hands‑on experience in IBM AIX and pSeries administration

- Deep understanding of IBM AIX OS and Power Systems architecture

- Strong experience with PowerVM, VIOS, HMC

- Excellent troubleshooting skills for OS and hardware issues

- Strong scripting skills (Shell, Perl)

-

## Experience in enterprise production environments

## Preferred Qualifications

- IBM Certifications in:

- AIX System Administration

- pSeries Hardware

- Performance Tuning

- Network Administration

-

## Experience in large, mission‑critical environments

- Exposure to hybrid or cloud‑integrated IBM Power workloads

Professional Attributes

- Strong analytical and problem‑solving skills

- Ability to diagnose and resolve issues quickly under pressure

- Excellent communication and documentation skills

- Proactive, detail‑oriented, and ownership‑driven mindset

- Team‑oriented approach with mentoring and knowledge‑sharing attitude

Shift timing- 1:30 PM to 10:30 PM

We are an equal opportunity employer. All qualified applicants will be considered for employment without regard to caste, colour, creed, religion, gender, gender identity, sexual orientation, age, disability, HIV status, or any other status protected by law. Candidates with disabilities who require accommodations during the recruitment process are encouraged to contact our Talent Acquisition team to place a request.

## About Ensono

## Company Overview
- **One-liner**: Ensono is a managed IT services provider specializing in mainframe modernization, hybrid cloud migration and management, and AI enablement for Fortune 500 enterprises.
- **Entity Type**: Private
- **Headquarters**: Downers Grove, Illinois, USA
- **Founded**: 2015 (spun off from a larger entity; celebrated 10 years in 2025)
- **Founders**: Not publicly available (formed as a spin-off/private equity-backed entity)

## Core Business
- **Primary industry/industries**: IT Services & Consulting, Managed Cloud Services, Mainframe Modernization
- **Target customers**: B2B Enterprise; specifically Fortune 500 companies in highly regulated sectors including Financial Services, Insurance, Healthcare, Public Sector, Retail, and Manufacturing
- **Mission or purpose statement**: "To be a relentless ally, disrupting the status quo, enabling our clients to do great things" [ensono.com](https://www.ensono.com/company/about-us/)

## Products & Services
- **Mainframe Modernization**: Services to modernize legacy mainframe environments, including migration to cloud (Azure, AWS) and modernization of workloads.
- **Cloud Migration + Managed Cloud**: Consulting and managed services for migrating to and operating within hybrid cloud environments (AWS, Microsoft Azure).
- **Data + AI**: Predictive analytics and AI/ML services to turn data into business outcomes.
- **Managed IT Services**: Ongoing infrastructure management, security, and operations for enterprise IT environments.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric (Total Funding/Revenue)**: Revenue is not publicly disclosed. The company is backed by private equity (Kohlberg & Company is a known investor).
- **Notable Investors/Partners**: Kohlberg & Company (private equity); AWS (Premier Managed Service, Consulting, and Mainframe Modernization Partner); Microsoft Azure (2020 Azure Partner of the Year); IBM (multiple Challenge Coin awards); Kong (award-winning partnership with Pay.UK) [ensono.com](https://www.ensono.com/)
- **Growth Signals**: Named a "Top 15 managed services growth company"; celebrated 10 years of progress in January 2026; appointed Alisdair Wright as Managing Director of Europe in January 2026; won a Kong Innovation Award for a fraud prevention platform with Pay.UK in December 2025 [ensono.com](https://www.ensono.com/insights-and-news/newsroom-and-press/ensono-celebrates-10-years-of-progress-transforming-the-future-of-modern-services/)

## Competitive Advantages
- **Mainframe expertise**: Recognized as an ISG leader in Mainframe-as-a-Service, Mainframe Modernization, and Mainframe Operations — a rare and deep specialization.
- **Hyperscaler partnerships**: Premier partner status with both AWS and Microsoft Azure, offering multi-cloud flexibility.
- **"Relentless ally" model**: Positions itself as a transparent, flexible partner rather than a vendor, with a focus on long-term client relationships.
- **Highly regulated industry focus**: Deep expertise in compliance-heavy sectors (finance, insurance, healthcare, government) which creates high switching costs.
- **Associate Equity Program**: All associates are offered equity through the Associate Equity Appreciation Program (AEAP), aligning employee and company success [ensono.com](https://www.ensono.com/company/careers/).

## Strategic Focus
- **Hybrid cloud & mainframe modernization**: Helping clients bridge legacy systems with modern cloud architectures.
- **AI enablement**: Turning data into actionable insights via AI/ML, a key growth vector.
- **European expansion**: Recent appointment of a Managing Director for Europe signals geographic growth.
- **Talent development**: Investing in the "Ensono Academies" to develop next-gen tech leaders and the "Fellows Program" to retain expert technologists in non-managerial executive roles.

## Why Work Here
- **Culture**: High employee engagement (92% overall engagement in a Gallup survey with 91% participation rate). Core values: Honesty, Reliability, Curiosity, Collaboration, Passion [ensono.com](https://www.ensono.com/company/culture/).
- **Work model**: "Global-first organization" with physical offices in Europe, India, and the United States, plus remote workforce concentrations. Remote, hybrid, and office-based roles available globally.
- **Perks**: Health and benefits from day one; paid volunteer days; Associate Equity Appreciation Program (AEAP); Ensono University for continuous learning; recognition and award programs.
- **Engineering culture**: Focus on innovation without requiring management responsibilities through the "Fellows Program" (Technical Fellow Career Path). IBM Champions are recognized and celebrated within the company.
- **DEI & Community**: Associate Community Groups (Culture Clubs), Ensono Women Connected initiative, global charity programs, and sustainability commitments.
- **Growth**: Strong emphasis on internal mobility and career development via "Ensono Academies" and ongoing learning.

## Sources
1. [ensono.com](https://www.ensono.com/)
2. [ensono.com - About Us](https://www.ensono.com/company/about-us/)
3. [ensono.com - Careers & Culture](https://www.ensono.com/company/careers/)
4. [ensono.com - Company Culture](https://www.ensono.com/company/culture/)
5. [ensono.com - Jobs Board](https://www.ensono.com/company/careers/jobs-board/)
6. [ensono.com - Newsroom (10 Year Anniversary)](https://www.ensono.com/insights-and-news/newsroom-and-press/ensono-celebrates-10-years-of-progress-transforming-the-future-of-modern-services/)
7. [ensono.com - Newsroom (Kong Innovation Award)](https://www.ensono.com/insights-and-news/newsroom-and-press/ensono-wins-kong-innovation-award-for-fraud-prevention-platform-with-pay-uk/)
8. [ensono.com - Newsroom (Europe MD Appointment)](https://www.ensono.com/insights-and-news/newsroom-and-press/ensono-appoints-alisdair-wright-as-managing-director-of-europe/)

## Other roles at Ensono

- [Senior Data Center Operations Analyst](https://feeny.ai/job/senior-data-center-operations-analyst-ensono-weehawken-p3xd53k3y0k0) — Weehawken, NJ
- [Senior Data Center Operations Analyst](https://feeny.ai/job/senior-data-center-operations-analyst-ensono-morrisville-q35henx7m4hj) — Morrisville, NC
- [Expert Middleware Engineer](https://feeny.ai/job/expert-middleware-engineer-ensono-pune-0jzbnamq9b86) — Pune, India
- [Mainframe Systems Programmer - ISV](https://feeny.ai/job/mainframe-systems-programmer-isv-ensono-united-states-g8gjkpz8x5fp) — United States
- [Solution Principal](https://feeny.ai/job/solution-principal-ensono-united-states-7a4xy1gmve1y) — United States
- [Senior Mainframe Systems Programmer - ISV](https://feeny.ai/job/senior-mainframe-systems-programmer-isv-ensono-united-states-wxw4xfgakfwh) — United States
- [CPE Business Partner](https://feeny.ai/job/cpe-business-partner-ensono-pune-f9k883f8ncbv) — Pune, India
- [Expert Service Delivery Manager](https://feeny.ai/job/expert-service-delivery-manager-ensono-united-kingdom-awrc9gebgz7m) — United Kingdom
- [IAM Analyst](https://feeny.ai/job/iam-analyst-ensono-united-states-eze26e6q25rw) — United States
- [Senior Mainframe Systems Programmer - CICS](https://feeny.ai/job/senior-mainframe-systems-programmer-cics-ensono-united-states-4x16gjppfm30) — United States