Senior zOS Unix & zLinux Integration Engineer

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

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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 todays 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:Asa Senior z/OS UNIX &zLinuxIntegration Engineer you will spearhead efforts to modernize and integrate our mainframe with contemporary platforms and tools.Wereseeking anexperienced z/OS Systems Engineerwithexpertisein z/OS UNIX System Services (USS)andIBMzLinux(Linux on IBM Z) to drive innovation in bridging mainframe and distributed this role you will:

Design and implement enhancementsto ourz/OS UNIX andzLinuxenvironments ensuring robust secure and scalable UNIX system services on z/OS andoptimizingLinux on IBM Z for enterprise workloads. You will apply best-in-class engineering practices to develop new features automate manual tasks and improve thedeveloperexperience on the mainframe.

• Accelerate ModernizationLeverage modern interfaceslikez/OS Management Facility (z/OSMF) theZoweframework andIBM Wazito integrate mainframe systems intocontemporary 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 moreopen and agile platform bridging the gap between legacy systems and modern development practices.

• Implement DevOps and CI/CD practicesfor mainframe Work on integrating z/OS with enterpriseDevOps pipelines enabling efficient use of mainframe capabilities in continuous integration and delivery processes. Introduce and support tools such asGit or Ansiblefor z/OS automation and promote the adoption of modern mainframe development environments (e.g. usingZoweCLI and APIsfor automation; exploring containerized dev/test frameworks likeIBM Wazifor z/OS).

• Ensure system interoperability Develop andmaintaininterfaces 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 ( NFS orZoweAPI Mediation Layer) and connecting mainframe services to cloud or hybrid environments.

• Operational Excellence Integrate advancedobservabilityandmonitoringfor USS andzLinuxprocesses using tools like system logsSMF data and modern monitoring dashboards (Grafana Splunk etc.) to ensure performance and reliability. You will alsoprovide third-level supportfor complex UNIX and Linux-related issues on the mainframe employing deep problem analysis toidentifyroot causes and permanent fixes.

• Technical leadership Asa senior engineer you will make high-impact decisionsregardingour mainframe integration solution designs and roadmaps tostakeholders 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 thatleveragemainframe strengths in a modern IT landscape. Furthermore you will contribute to our culture bymentoring colleagues(e.g. in using new tools or approaches) and by sharingexpertisein internal forums and guilds.

Your team:Youll be part of theMainframe Platform Core Servicescrew working within a specializedzSoftware cross-functional team focuses on evolving the mainframe to supportnew interfaces and hybrid-cloud connectivity. You will closely partner with team members inCore z/OS Engineering Middleware (CICS/MQ) Integration Security and Cloud Enablementto develop end-to-end solutions that connect mainframe services with modern platforms. The teamoperatesglobally soyoullcollaborate 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 adoptnew technologiesin the mainframe context.

Yourexpertise:You are aseasoned mainframe engineer (810 years of experience)with a blend oftraditional mainframe skills and modern tooling knowledge. Key qualifications include:

• z/OS UNIX System Services (USS) Advanced knowledge ofUNIX on z/OS(shell environment POSIX interfaceszFSfile 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 ZIn-depth understanding ofzLinux(Linux running in KVM or LPAR on IBM Z hardware) including system installation networking and performance tuning in a mainframe environment. Familiarity with virtualization viaKVMand concepts like IFL processors CPU management and resource sharing on IBM Z is expected.

• Modernization Tools Hands-on experience with or strong knowledge ofmodern mainframe toolssuch asz/OSMF(IBM z/OS Management Facility) for web-based system managementZowe(Open Mainframe Projects framework for mainframe integration) e.g. usage ofZoweCLI/Explorer and API mediation for connecting mainframe services with cloud andIBM Wazifor cloud-based mainframe development/testing. Your ability toutilizethese tools and frameworks is critical for enabling anAPI-driven cloud-integrated mainframeenvironment.

• Systems Programming & Scripting Proficiency inshell scripting REXX and programming languages likePython or C/Con 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) andcross-platform security protocols. Understanding how to manage secure APIs and connectivity between z/OS and external systems ( RACF rules for cross-platform access etc.) is important for safe integration.

• Performance & Reliability Experience optimizing the performance of USS workloads andzLinuxinstances including resource allocation workload balancing and monitoring of key metrics (like CPU memory usage on IFLs network throughput) to ensure stable operations. Familiarity withmainframe performance toolsand logs (SMF RMF) is expected.

• Strategic & Innovative Mindset Passion formodernizing mainframe usageand staying updated on industry trends (for example containerization onzLinux cloud integration DevOps practices for mainframe). Ability to evaluate emerging technologies and incorporate them into the mainframe environment whenbeneficial.

• Communication & CollaborationExcellent English communication skillsareessential 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 acrossdifferent 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 platformin a dynamic agile deep specialtybe it base z/OS systems workload automation or mainframe Unix/Linux integrationto drive high-impact improvements that keep our mainframe systems robust modern and aligned with business needs. We value proactive engineering leadershipstrong 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 organizations success.