Linux System Administrator

Role Overview

We are looking for a skilled Systems Engineer with strong expertise in Ansible automation, Kubernetes, and system-level scripting. This role focuses on building scalable automation and managing GPU-aware infrastructure.

Key Responsibilities

• Develop and maintain automation workflows using Ansible
• Write and optimize Ansible playbooks for infrastructure and application deployment
• Automate system-level tasks using Bash scripting
• Debug and test automation workflows for reliability and scalability
• Manage Kubernetes clusters, including:
• Pod lifecycle management
• Networking and firewall configurations
• GPU resource mapping and scheduling
• Custom Resource Definitions (CRDs)
• Collaborate with engineering teams to integrate automation into CI/CD pipelines
• Ensure secure and scalable infrastructure for AI workloads

Requirements

• Strong hands-on experience with Ansible and automation workflows
• Solid Linux system administration experience
• Proficiency in Bash scripting
• Deep understanding of Kubernetes (pods, networking, CRDs, GPU scheduling)
• Experience in debugging and optimizing automation systems
• Strong problem-solving and ownership mindset

Nice to Have

• Experience with GPU workloads or HPC environments
• Exposure to monitoring tools like Prometheus and Grafana

Education : B.Tech / M.Tech only

MANDATORY CRITERIA:

• It's a Contractual role for a particular project ongoing in the company, duration will be 1 year or may exceed as per the project requirement, After that the candidate will be kept on permanent role.
• The candidate will be on company's payroll only.
• Candidate should be comfortable for directly visiting and working with client's place.
• Immediate to 15 days joiner preferred
• 3 to 5 years of hands-on experience in Linux Device Driver development
• Strong experience with Linux kernel programming & memory management
• Experience with Zephyr OS / device driver model (porting bare-metal drivers).
• Familiarity with RTOS linux kernel internals and hardware protocols (They mainly use AXI protocol, i2c, spi).
• Strong knowledge of PCIe and DMA drivers
• Proficiency in C / C++ programming languages
• Experience working with hardware interfaces/protocols (AXI, I2C, SPI)

REQUIRED SKILLS:

• Proven experience in developing Linux Device Drivers.
• Preferred experience in Zephyr (need to port bare metal drivers to zephyr OS/device driver model).
• Strong knowledge of PCIe and DMA drivers (Good to know Xilinx's IPs like AXI-DMA, XDMA etc).
• Expertise in Linux Memory Management.
• Proficiency in C/C++ programming languages.
• Preferred familiarity with real-time operating systems (RTOS), linux kernel internals and hardware protocols (They mainly use AXI protocol, i2c, spi).

Immediate to 15 days joiners are preferrable we need to close it asap.

Job Summary

We are seeking an experienced Senior System Administrator responsible for managing and maintaining the organisation’s IT infrastructure, including Windows and Linux servers, network devices, security systems, storage solutions, and enterprise applications. The role ensures high availability, security, and performance of all IT systems while supporting business operations.

Key Responsibilities

Server Administration

• Install, configure, and maintain Windows Server environments (Active Directory, DNS, DHCP, Group Policy).
• Manage and maintain Linux machines for application hosting and system services.
• Administer and maintain Application Servers supporting internal business applications.
• Manage and maintain Biometric Servers used for employee attendance and access control systems.
• Monitor server health, performance, and system logs.
• Perform system updates, patches, and security hardening.

Storage and File Services

• Manage and maintain Samba File Servers for shared storage and user access.
• Administer NAS storage systems (Synology), including storage allocation, access permissions, and performance monitoring.
• Ensure proper storage utilisation and secure data access.

Network Infrastructure Management

• Configure and manage Sophos Firewall, including firewall rules, NAT policies, VPN configuration, and threat protection.
• Configure and maintain Cisco and Netgear switches, including VLAN configuration and network segmentation.
• Manage and maintain wireless access points to ensure reliable and secure Wi-Fi connectivity.
• Monitor network performance and troubleshoot connectivity issues.

Proxy and Security Management

• Install, configure, and maintain Proxy Servers for internet access control and monitoring.
• Monitor firewall logs, network security alerts, and implement security policies.
• Ensure network infrastructure is protected against unauthorised access and threats.

Backup and Disaster Recovery

• Implement and manage backup and restore solutions for servers, NAS, and critical business data.
• Perform periodic backup verification and disaster recovery testing.
• Ensure backup policies and schedules are properly maintained.

Power and Infrastructure Management

• Monitor and maintain UPS systems to ensure an uninterrupted power supply for servers and network infrastructure.
• Coordinate with vendors for UPS maintenance, battery replacement, and power infrastructure reliability.

System Monitoring and Troubleshooting

• Proactively monitor servers, network devices, storage systems, and applications.
• Troubleshoot and resolve system, network, and application-related issues.
• Maintain proper documentation of infrastructure configurations and procedures.

Vendor and Infrastructure Coordination

• Coordinate with vendors for hardware procurement, infrastructure support, and service management.
• Plan and implement infrastructure upgrades and improvements.

Required Skills

• Strong experience with Windows Server Administration
• Good knowledge of Linux System Management
• Experience with Sophos Firewall
• Knowledge of Cisco and Netgear networking devices
• Experience with NAS storage (Synology) and Samba File Server
• Experience managing Application Servers and Biometric Systems
• Experience with Backup and Disaster Recovery
• Understanding of network security and monitoring

Key Responsibilities

1. Kernel Lifecycle & Maintenance

Upstream Alignment: Lead the strategy for upgrading enterprise kernels (e.g., migrating from LTS 5.15 to 6.6) while maintaining binary compatibility where required.

Patch Porting: Expertly port functional and performance patches between disparate kernel versions, resolving complex code conflicts and API changes.

CVE Mitigation: Monitor the Linux Kernel Mailing List (LKML) and security advisories to identify and backport CVE patches from upstream to production environments.

2. Deep-Dive Debugging & Stability

Panic Analysis: Act as the final escalation point for Kernel Panics and "Oops" messages. Utilize kdump, crash, and gdb to perform post-mortem analysis of vmcores.

Boot-Time Resolution: Debug critical failures during the early boot process (UEFI handoff, initramfs, and early kernel init) where standard logging is unavailable.

Performance Tuning: Use ebpf, ftrace, and perf to identify bottlenecks in memory management, scheduler latency, or I/O throughput.

3. Driver Development & Hardware Integration

Driver Ownership: Design, develop, or maintain at least one Open Source or Proprietary Device Driver (Network, Storage, GPU, or Character devices).

Hardware Abstraction: Interface directly with hardware registers, managing DMA mappings, and optimizing interrupt handling (MSI-X, Threaded IRQs).

Out-of-Tree Management: Maintain driver compatibility across kernel updates using DKMS or similar frameworks.

4. Infrastructure & Automation

Registry Management: Oversee the distribution of custom kernel builds and modules via GitLab Container/Package Registries.

CI/CD for Kernel: Build automated testing pipelines (Hardware-in-the-loop) to validate kernel stability before enterprise-wide deployment.

Required Technical Skills:

Languages: Mastery of C/C++ Programming (C is preferred)

Kernel Internals: Deep understanding of VFS, Memory Management (MMU/Paging), Process Scheduling, and Networking Stacks.

Debugging Tools: Expert-level use of kprobes, trace-cmd, valgrind, and hardware-level debuggers (JTAG/Serial Console).

Build Systems: Proficiency with Kbuild, Makefiles, and building RPM/Debian packages for kernel distribution.

Security: Hands-on experience with SELinux/AppArmor policy development and kernel hardening (FIPS, KSPP).

Job Title: Linux Project Administrator (RHEL)

Experience: 8-12 Years

Location: Pan India

Open Positions: 1

Role Overview

We are looking for an experienced RHEL Linux Administrator to manage and support enterprise Linux environments. The candidate should have strong hands-on expertise in system administration, patch management, automation, and performance tuning. This role requires proactive monitoring, troubleshooting, and ensuring high availability of Linux platforms.

Must-Have Technical Skills

1. Red Hat Enterprise Linux (RHEL) & Solaris – In-depth Knowledge

Strong understanding of Linux system internals, kernel tuning, boot process, file systems, and performance monitoring. Ability to analyze logs and troubleshoot complex OS-level issues.

2. Patching Using Red Hat Satellite

Hands-on experience in managing repositories, content views, lifecycle environments, and performing patching activities through Satellite. Knowledge of repo sync and package management processes.

3. Ansible Automation

Experience in creating and executing Ansible playbooks for configuration management, patching, and user management. Ability to perform pre- and post-validation checks and automate routine administrative tasks.

4. Scripting Knowledge

Proficiency in Shell scripting or similar scripting languages to automate system administration tasks and operational processes.

5. Performance Monitoring & System Optimization

Experience in identifying performance bottlenecks and implementing tuning measures to ensure system stability and efficiency.

Good-to-Have Skills

1. GitHub / Subversion / TeamCity

Working knowledge of version control systems and CI/CD tools for automation and deployment workflows.

2. NFS & CIFS

Experience in configuring and troubleshooting network file systems and shared storage environments.

3. Networking, Storage & Virtualization

Good understanding of networking layers, storage concepts, database connectivity, and virtualization platforms.

4. AWX

Exposure to AWX for managing and scheduling Ansible automation workflows.

5. CI/CD & Automation Concepts

Understanding of automation frameworks, pipeline concepts, and DevOps practices.

Key Responsibilities

• Ensure all tickets are addressed and updated within SLA in the ticketing tool.
• Participate in team rotation and support activities.
• Maintain Linux platforms in a highly available, secure, reliable, and performant state.
• Identify performance improvement opportunities and implement enhancements.
• Provide technical support to application and development teams.
• 
  

Key Responsibilities:

• Install, configure, and maintain Hadoop clusters.

• Monitor cluster performance and ensure high availability.

• Manage Hadoop ecosystem components (HDFS, YARN, Ozone, Spark, Kudu, Hive).

• Perform routine cluster maintenance and troubleshooting.

• Implement and manage security and data governance.

• Monitor systems health and optimize performance.

• Collaborate with cross-functional teams to support big data applications.

• Perform Linux administration tasks and manage system configurations.

• Ensure data integrity and backup procedures.

• At least 3 years of C++ programming experience in a Linux environment.
• Strong understanding of computer systems e.g. operating systems, networks, performance optimization, etc
• Experience in Object-Oriented design and multi threaded programming
• Experience in creating/supporting cross-platform multi threaded applications
• Strong analytical and problem solving skills
• Ideally some experience in developing low latency systems
• Experience with trading or execution systems preferred
• Bachelor's degree in Computer Science or Computer Engineering or related field
• Reliable and predictable availability
• 
  
  Ideally in Mumbai Metro Area but open to anywhere for the right candidate.

You would be part of:

1. Designing/Improvement of new/existing architectures of distributed computing with subcomponents of Unmanned Aerial Systems (UAS).
2. Working/Researching with industrial state of the art sensor systems and modules, and developing drivers (HAL or wrapper) and applications around their usage.
3. Design and implementation of communication protocols between different subcomponents of UAS for distributed computing.
4. Writing Applications and Drivers from the scratch for (embedded)linux based systems.
5. Scripting and automations around work flows of UAS usage.
6. Working with existing sophisticated software stacks of subcomponents of UASs.
7. Working closely with electronics, design and systems teams for architecture development and deployment.
8. Working closely with Flight Controller engineers to do collaborative development of UAVs.

We expect you to be:

1. Experienced in hands-on development of complex embedded systems involving multiple microcontrollers or SoCs.
2. Very good in analytical abilities to be able to do core research and development activities.
3. Able to write low level drivers (wrapper or core) from the scratch.
4. Very comfortable reading and understanding datasheets and reference manuals of microcontrollers, peripherals, sensors etc.
5. Able to understand existing complex embedded software stack written in C/C++.
6. Solid in C.
7. Good in C++.
8. Comfortable with using hardware debuggers.
9. Having Hands-On experience with RTOS concepts like scheduling, threads synchronicity , race conditions etc.
10. Having Solid understanding of interrupt mechanisms.
11. Experienced in working with different hardware protocols like SPI, I2C, UART, PWM, CAN, USB etc.
12. Having Solid understanding of interrupts architecture of ARM based microcontrollers like STM32, LPC etc.
13. Having Good understanding of the concept of bootloaders.
14. Able to multitask.
15. A self-motivated and motivating personality who can work well independently as well as part of a team
16. Having good interpersonal and soft skills who can adapt to the work environment while manifesting a good positive attitude

You are awesome if you are:

1. Experienced in Linux Device Driver development.
2. Having good exposure of working on and understanding of any sensor modules like GPS, LIDAR etc.
3. Experienced in data filtering techniques (Example: Kalman filter)

Job Description:

WLAN Linux Device Driver development (802.11ax preferred)

• WLAN Debugging
• WLAN Firmware development (802.11ac, 802.11n)
• Networking/Wireless Domain knowledge
• Hostapd, Supplicant
• Cross compiling/porting experience
• Performance optimization & Firmware enhancements

Must have Skills:

• 1-10 years of experience in Embedded Software Design, Implementation and testing
• Good knowledge of C or C++
• Basic knowledge in Scripting (Shell, Perl or Python)
• Proficiency in Problem Solving and Debugging skills
• Excellent team working skills
• Experience with version control e.g. GIT
• Basic experience of working in Linux OS
• Network Drivers
• WLAN Protocol Knowledge – 11n, 11ac
• WLAN Linux Device Drivers
• Hostpad, Supplicant
• WLAN Debugging
• Fluent in English

Desired Candidate Details:

• Design, development, and maintenance
• WLAN Stack development and debugging
• Feature Enhancements, Applications, Tools for SDKs
• Basic module level unit testing, System testing
• Providing support to technical documentation team and field application engineers
• Close collaboration with the Chipset Vendor on the Software Development
• Participations in the Product design and Software Design Documentation – High level / Module level / Low level design
• Troubleshooting software and architectural issues

We are looking for a seasoned Wireless LAN Software Engineer to join our Wireless & Networking team in Chennai, Pollachi, Kochi (Cochin), Gurugram, Manesar, Bengaluru (Bangalore). The candidate must be an experienced Engineer and a good team player, who will work on Wireless software solutions which will enable us to develop the products for our customers quickly with industry leading quality. Working with Embedded Software in agile development projects, you will be responsible for creating and maintaining software of Wireless Access Point and Router Products including Module design, Development, JIRA Updates and Unit testing of the Software that is meeting industry standards, creating demos of the solution and customer support.

Primary Skill: System Software Development

Skill sets req:

• Linux porting/development; Linux kernel concepts
• Expertise in Linux BSP device driver development
• Customizing kernel + Porting + Developing Applications Linux Device Driver Development (Character devices) Good Concepts of Network Drivers File Systems Concepts
• Expertise in porting, network stack; optimization, network programming
• Bootloader/Uboot porting
• Camera driver development (Good to have)