---
title: 'Senior z/OS Unix & zLinux Integration Engineer at Ensono'
canonical: 'https://feeny.ai/job/senior-z-os-unix-zlinux-integration-engineer-ensono-hyderabad-np0wjmdwbzjp'
type: 'job'
last_seen: '2026-09-06'
---

# Senior z/OS Unix & zLinux Integration Engineer at Ensono

- **Company:** Ensono
- **Location:** Hyderabad, India
- **Posted:** 2026-08-11
- **Last confirmed live:** 2026-09-06
- **Apply:** https://ensono.com/company/careers/jobs-board/?gh_jid=4720416005

## Job description

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 Us (Ensono)

Ensono is an expert technology adviser and managed service provider. As a relentless ally, we accelerate clients’ digital transformation to achieve business outcomes that stand to last. Our dedicated team helps organizations optimize today’s systems across any hybrid environment with services such as consulting, mainframe and application modernization, public cloud migration and cloud-native development. With certified experts in AWS, Azure and Google Cloud and recognized as Microsoft Datacenter Transformation Partner of the Year, Ensono has over 3500+ associates globally and is headquartered in greater Chicago.

Your role: As a Senior z/OS UNIX & zLinux Integration Engineer, you will spearhead efforts to modernize and integrate our mainframe with contemporary platforms and tools. We’re seeking an experienced z/OS Systems Engineer with expertise in z/OS UNIX System Services (USS) and IBM zLinux (Linux on IBM Z) to drive innovation in bridging mainframe and distributed systems. In this role, you will:

Design and implement enhancements to our z/OS UNIX and zLinux environments – ensuring robust, secure, and scalable UNIX system services on z/OS and optimizing Linux on IBM Z for enterprise workloads. You will apply best-in-class engineering practices to develop new features, automate manual tasks, and improve the developer experience on the mainframe.

- Accelerate Modernization – Leverage modern interfaces like z/OS Management Facility (z/OSMF), the Zowe framework, and IBM Wazi to integrate mainframe systems into contemporary DevOps and cloud environments. This includes enabling REST APIs and CLI tools that allow distributed teams and modern applications to seamlessly interact with z/OS resources. You will play a key role in making the mainframe a more open and agile platform, bridging the gap between legacy systems and modern development practices.
- Implement DevOps and CI/CD practices for mainframe – Work on integrating z/OS with enterprise DevOps pipelines, enabling efficient use of mainframe capabilities in continuous integration and delivery processes. Introduce and support tools such as Git or Ansible for z/OS automation, and promote the adoption of modern mainframe development environments (e.g., using Zowe CLI and APIs for automation; exploring containerized dev/test frameworks like IBM Wazi for z/OS).
- Ensure system interoperability – Develop and maintain interfaces between z/OS and distributed (Linux/Unix) systems, enabling smooth data exchange and process integration. This may involve building secure API layers, cross-platform file sharing (e.g. via NFS or Zowe API Mediation Layer), and connecting mainframe services to cloud or hybrid environments.
- Operational Excellence – Integrate advanced observability and monitoring for USS and zLinux processes, using tools like system logs, SMF data, and modern monitoring dashboards (Grafana, Splunk, etc.) to ensure performance and reliability. You will also provide third-level support for complex UNIX and Linux-related issues on the mainframe, employing deep problem analysis to identify root causes and permanent fixes.
- Technical leadership – As a senior engineer, you will make high-impact decisions regarding our mainframe integration strategy. You’ll present solution designs and roadmaps to stakeholders and technical leadership, advocating for improvements that enhance agility and align with business needs. You will collaborate with architects and other senior engineers to design hybrid solutions that leverage mainframe strengths in a modern IT landscape. Furthermore, you will contribute to our culture by mentoring colleagues (e.g., in using new tools or approaches) and by sharing expertise in internal forums and guilds.

Your team: You’ll be part of the Mainframe Platform Core Services crew, working within a specialized zSoftware pod. This cross-functional team focuses on evolving the mainframe to support new interfaces and hybrid-cloud connectivity. You will closely partner with team members in Core z/OS Engineering, Middleware (CICS/MQ) Integration, Security, and Cloud Enablement to develop end-to-end solutions that connect mainframe services with modern platforms. The team operates globally, so you’ll collaborate with colleagues across different regions and time zones, bringing together a variety of skills to modernize our mainframe environment. The working model is agile, emphasizing iterative improvements, quick feedback loops, and continuous learning as we adopt new technologies in the mainframe context.

Your expertise: You are a seasoned mainframe engineer (8–10+ years of experience) with a blend of traditional mainframe skills and modern tooling knowledge. Key qualifications include:

- z/OS UNIX System Services (USS) – Advanced knowledge of UNIX on z/OS (shell environment, POSIX interfaces, zFS file system management, Unix security model) and the ability to develop and debug programs or scripts running under USS. Experience porting or integrating open-source tools (e.g., Git, Python) onto USS is an advantage.
- Linux on IBM Z – In-depth understanding of zLinux (Linux running in KVM or LPAR on IBM Z hardware), including system installation, networking, and performance tuning in a mainframe environment. Familiarity with virtualization via KVM and concepts like IFL processors, CPU management, and resource sharing on IBM Z is expected.
- Modernization Tools – Hands-on experience with or strong knowledge of modern mainframe tools such as z/OSMF (IBM z/OS Management Facility) for web-based system management, Zowe (Open Mainframe Project’s framework for mainframe integration) — e.g., usage of Zowe CLI/Explorer and API mediation for connecting mainframe services with cloud – and IBM Wazi for cloud-based mainframe development/testing. Your ability to utilize these tools and frameworks is critical for enabling an API-driven, cloud-integrated mainframe environment.
- Systems Programming & Scripting – Proficiency in shell scripting, REXX, and programming languages like Python or C/C++ on z/OS or Linux, enabling you to create automation scripts, API endpoints, and system utilities bridging z/OS with distributed systems. Exposure to infrastructure-as-code (e.g., Ansible on z/OS) is a plus, emphasizing code-driven system management.
- Software Maintenance & Configuration – Solid knowledge of SMP/E, with proven experience in installing, configuring, and migrating new product versions.
- Networks & Security – Good grasp of mainframe networking (TCP/IP on z/OS) and cross-platform security protocols. Understanding how to manage secure APIs and connectivity between z/OS and external systems (e.g., leveraging encryption, RACF rules for cross-platform access, etc.) is important for safe integration.
- Performance & Reliability – Experience optimizing the performance of USS workloads and zLinux instances, including resource allocation, workload balancing, and monitoring of key metrics (like CPU, memory usage on IFLs, network throughput) to ensure stable operations. Familiarity with mainframe performance tools and logs (SMF, RMF) is expected.
- Strategic & Innovative Mindset – Passion for modernizing mainframe usage and staying updated on industry trends (for example, containerization on zLinux, cloud integration, DevOps practices for mainframe). Ability to evaluate emerging technologies and incorporate them into the mainframe environment when beneficial.
- Communication & Collaboration – Excellent English communication skills are essential, enabling you to collaborate effectively with global teams and to clearly present modernization plans to both technical and non-technical stakeholders. You are comfortable in a leadership capacity, coordinating initiatives across different groups, and nurturing a culture where mainframe and distributed teams collaborate seamlessly on hybrid solutions.

By joining our team as a senior mainframe engineer in any of these roles, you will be empowered to work independently, make critical technical decisions, and visibly shape the future of our mainframe platform in a dynamic, agile environment. You’ll leverage your deep specialty—be it base z/OS systems, workload automation, or mainframe Unix/Linux integration—to drive high-impact improvements that keep our mainframe systems robust, modern, and aligned with business needs. We value proactive engineering leadership, strong communication, and a commitment to continuous learning and innovation across all these positions. Each role offers the opportunity to take ownership of technical solutions and present them to stakeholders and technology leadership, ensuring your contributions directly influence our organization’s success.

## 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/)

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