Mainframe developer

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).

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.

FURIOUS FOX is looking for Embedded Developers with strong coding skills in C & C++ as well as experience with Embedded Linux.

Experience : (Minimum 7-10 yrs)

• Experienced in edge processing for connected building / industrial / consumer

appliances / automotive ECU

• Have a good understanding of IoT platforms and architecture

• Deep experience in operating systems eg: Linux, freeRTOS / kernel development/device drivers.

/ sensor drivers

• Have experience with various low-level communication protocols, memory devices, messaging

framework etc.

• Have a deep understanding of design principles, design patterns, container preparations

• Have developed hardware, OS abstraction layers, and sensor handlers services to manage various BSP, os standards

• Have experience with Python edge packages.

• Have a good understanding about IoT databases for edge computing

• Good understanding of connectivity application protocols and connectivity SDK for Wi-Fi and BT / BLE

• Experienced in arm architecture, peripheral devices and hardware board configurations

• Able to set up debuggers, configure build environments, and compilers and optimize code and performance.

Skills / Tools:

• Expert at object-oriented programming

• Modular programming

• C / C++ / JavaScript / Python

• Eclipse framework

• Target deployment techniques

• IoT framework

• Test framework

Highlights :

• Having AI / ML knowledge in applications

• Have worked on wireless protocols

• Ethernet / Wi-Fi / Bluetooth / BLE

• Highly exploratory attitude

• willing to venture in and learn new

technologies.

• Have done passionate projects based on self-interest.

Xfinito is building a portfolio in new product innovation, product contribution and infrastructure goals while providing individuals and teams the freedom to emphasize specific types of work.

Our work focuses on real –world problems that span the breadth of biomedical engineering, embedded systems, computer science, such as machine and deep learning, data mining, natural language processing, hardware and software performance analysis and much more.

JOB ROLE: EMBEDDED SYSTEMS ENGINEER

ROLES AND RESPONSIBILITIES:

• Work with multi-disciplinary engineering team and customer to identify and recommend hardware needs and requirements for project/product.
• Modify or assist in the development of software architecture and design for new products, prototype, or re-design, including sourcing build environments and writing technical support and control documentation.   
• Read Block Diagrams and detail circuit schematics and layout of proposed or existing hardware and assess the software and driver requirements.
• Participates in cross-divisional Edge IoT projects and/or proposals.
• Develop, oversee, and document automated tests for electrical hardware design and products as well as final operating drivers and systems.
• Evaluate and investigate product failures, and recommend repair or design modifications based on specifications, cost, resources, and risks.

REQUIREMENTS:

• Ability to creatively approach challenges and cleverly solve difficult problems.
• Ability to independently identify daily design and customer support tasks, self-start and motivate.
• Ability to manage several projects and prioritize appropriately, with minimal supervision.
• Ability to work in a collaborative team environment as well as independently.
• Ability to learn and work in virtual environments (CAD & Hardware build packages) in-which candidate’s skills are low but persevere and overcome skill gaps autonomously.
• Some experience programming with embedded systems designs and multithreaded real-time operating systems is required.
• Solid programming experience. Preferably in C or C++, .NET, and Java programming languages.

EXPERIENCE:

We as a team are looking for freshers or young professionals with (0-4 years of experience) passion and eagerness to create scalable and optimized software systems and execute complete embedded software development lifecycle.

• Product and Application Development in C.
• Develop and debug Applications and Firmware in/for Embedded Linux Environment
• Design and development of real-time, multi-processor / multi-controller systems.
• Module-level design with proper software design practices

Required Qualifications:

• 4+ years of C development AND Linux experience
• Linux user space and kernel space programming experience
• Linux system programming
• Work experience with 8 / 32-bit microcontroller programming
• Experience with CAN, MODBUS, and high power systems software development.
• Source revision control (git, svn)
• Degree in Computer Science from a reputed institution
• Linux command line and development tools (e.g. shell script, Make, CMake, GDB, and GNU development tools)

Preferred Qualifications:

• Exposure to a full product development cycle.
• Programming experience in an object-oriented language (C++)
• Programming experience in a high-level language (e.g. Python)
• Knowledge of common Linux system calls, kernel interfaces, Linux device drivers, and configuration.
• Exposure to multi-processor product architecture.
• Experience in open source components and libraries (e.g. libxml, glib, qt, dbus, OpenSSL, curl, etc)
• Experience with Level2 AC EV chargers and/or DC fast chargers.
• Experience OR Knowledge with standards ISO 15118-2
•  Add "8 bit / 16 bit / 32 bit microcontroller experience, specially ARM"