---
title: 'Mainframe Security Engineer - Logical Security at Ensono'
canonical: 'https://feeny.ai/job/mainframe-security-engineer-logical-security-ensono-chennai-n090fxxt0dat'
type: 'job'
last_seen: '2026-10-18'
---

# Mainframe Security Engineer - Logical Security at Ensono

- **Company:** Ensono
- **Location:** Chennai, India
- **Posted:** 2026-10-10
- **Last confirmed live:** 2026-10-18
- **Apply:** https://ensono.com/company/careers/jobs-board/?gh_jid=4739006005

## Job description

Job Description – Mainframe Systems Programmer (RACF Security Administration)

## 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)

The Mainframe Systems Programmer – RACF Security Administration is responsible for the administration, maintenance, support, and enhancement of IBM z/OS security environments with a strong focus on RACF (Resource Access Control Facility). This role ensures the integrity, confidentiality, and availability of enterprise mainframe systems while supporting compliance, audit, and operational requirements. As well as Digital Certificate renewals and creation.

Position Summary

This career-level position provides technical support and administration for enterprise mainframe security infrastructure. The ideal candidate will possess hands-on experience with RACF administration, z/OS system security, user provisioning, access controls, auditing, digital certificates and compliance standards. The role requires collaboration with infrastructure teams, auditors, application support, and business stakeholders to maintain a secure and stable mainframe environment.

## Key Responsibilities

- Administer and maintain RACF security definitions, user IDs, groups, datasets, and resource profiles.
- Implement and manage access controls for z/OS systems, applications, datasets, and subsystems.
- Monitor RACF system logs, SMF records, and security events for compliance and incident response.
- Support security audits and ensure compliance with organizational and regulatory requirements.
- Analyze and resolve RACF-related incidents, access issues, and security vulnerabilities.
- Collaborate with application teams to implement secure access solutions and role-based access controls.
- Develop and maintain operational procedures, standards, and technical documentation.
- Support system upgrades, migrations, and implementation of new security features.
- Work closely with system programmers, auditors, and cybersecurity teams to strengthen enterprise security posture.

Required Qualifications

- 3–7 years of experience supporting IBM z/OS mainframe environments.
- Hands-on experience administering RACF security in enterprise environments.
- Strong understanding of z/OS security architecture and mainframe operations.
- Experience with TSO/ISPF, JCL, SDSF, and IBM utilities.
- Knowledge of SMF records, security reporting, and audit compliance processes.
- Experience troubleshooting security access issues and implementing corrective actions within client scope.
- Understanding of change management, incident management, and operational support procedures.
- Strong analytical, problem-solving, and communication skills.

## Preferred Qualifications

- Experience with zSecure, native RACF commands and Digital Certificates.
- Knowledge of CICS, DB2, IMS, MQ, and other mainframe subsystems.
- Experience with automation and scripting in z/OS environments.
- IBM Mainframe or RACF-related certifications are a plus.

Category | Skills

Operating Systems | IBM z/OS

Security | RACF, zSecure, SMF, Audit Controls

Mainframe Tools | TSO/ISPF, SDSF, JCL

Subsystems | CICS, DB2, IMS, MQ

Processes | Access Management, Incident Response, Compliance Audits, Digital Certificates

Documentation | Technical Procedures, Security Standards

Work Environment

This position operates in a highly regulated enterprise IT environment supporting mission-critical mainframe systems. Participation in weekend maintenance windows and after-hours support activities is required. This is a position based on US client hours EST.

## Equal Opportunity Statement

The organization is committed to creating an inclusive environment for all employees and is proud to be an equal opportunity employer. Employment decisions are based on qualifications, merit, and business needs.

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 Mainframe Systems Programmer - CICS](https://feeny.ai/job/senior-mainframe-systems-programmer-cics-ensono-united-states-nnhn4s9m7t95) — United States
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- [Mainframe Modernization Architect](https://feeny.ai/job/mainframe-modernization-architect-ensono-bengaluru-wn99c3z24a89) — Bengaluru, India / Chennai, India / Pune, India
- [Mainframe Systems Programmer - Storage](https://feeny.ai/job/mainframe-systems-programmer-storage-ensono-bengaluru-4kpsgj1vzg1b) — Bengaluru, India / Chennai, India / Hyderabad, India / Pune, India
- [Senior Systems Engineer - MFT](https://feeny.ai/job/senior-systems-engineer-mft-ensono-pune-k00mqmqmk56b) — Pune, India
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- [Principal Project Manager](https://feeny.ai/job/principal-project-manager-ensono-united-states-jjseed3c73ad) — United States
- [Senior Mainframe Security Administrator- RACF](https://feeny.ai/job/senior-mainframe-security-administrator-racf-ensono-pune-7j24x18h76kg) — Pune, India
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