Full stack Developer

Job Title: Senior Linux Kernel Engineer

Experience: 5–10 Years

Location: Bangalore / Chennai

Domain: Enterprise Linux / Kernel Development

Job Summary

We are seeking a highly skilled Senior Linux Kernel Engineer with deep expertise in kernel development, debugging, and performance optimization. The role involves working on enterprise-grade Linux distributions, kernel lifecycle management, security patching, and low-level hardware integration.

Key Responsibilities

1. Kernel Lifecycle & Maintenance

• Lead kernel upgrade strategies (e.g., LTS migrations such as 5.15 → 6.x) while ensuring stability and compatibility.
• Perform patch porting across kernel versions, resolving API and dependency conflicts.
• Track and mitigate security vulnerabilities by monitoring CVEs and upstream sources (e.g., LKML).
• Backport critical fixes to production kernels without impacting system stability.

2. Debugging & System Stability

• Act as an escalation point for kernel panics and system crashes.
• Perform post-mortem analysis using kdump, crash, and gdb.
• Debug early boot issues (UEFI, initramfs, kernel initialization).
• Conduct performance analysis using eBPF, ftrace, and perf to optimize system behavior.

3. Driver Development & Hardware Integration

• Design, develop, and maintain device drivers (network, storage, GPU, or character devices).
• Work closely with hardware through DMA, interrupts (MSI-X), and register-level programming.
• Maintain out-of-tree drivers using DKMS or similar frameworks.
• Ensure compatibility of drivers across kernel updates.

Required Technical Skills

• Programming: Strong expertise in C (mandatory) and C++
• Kernel Internals: Deep understanding of:
• Virtual File System (VFS)
• Memory Management (MMU, Paging)
• Process Scheduler
• Linux Networking Stack
• Debugging Tools:
• kdump, crash, gdb
• kprobes, trace-cmd, ftrace
• perf, valgrind
• Hardware debugging tools (JTAG, Serial Console)
• Build Systems:
• Kbuild, Makefiles
• Kernel packaging (RPM/Debian)
• Security:
• Experience with CVE patching and backporting
• Knowledge of SELinux/AppArmor
• Kernel hardening (FIPS, KSPP)

Preferred Skills

• Experience contributing to open-source kernel projects
• Familiarity with Linux Kernel Mailing List (LKML) workflows
• Exposure to enterprise Linux distributions (RHEL, Ubuntu, SUSE)
• Experience with performance tuning and system optimization at scale

1. Core Programming (C Language)

• Must have strong hands-on experience in C programming
• Comfortable with pointers, memory management, and low-level concepts

2. Kernel Internals Expertise

• Should have worked in at least one subsystem:
• VFS / File Systems
• Memory Management
• Scheduler / Networking

3. Debugging & Crash Analysis

• Experience handling kernel panics
• Hands-on with vmcore analysis tools

4. Security & Patching

• Understanding of CVE fixes and backporting

5. Driver Development

• Experience in writing or maintaining device drivers

6. Performance & Advanced Debugging

• Exposure to eBPF, ftrace, perf

7. Hardware-Level Understanding

• Knowledge of DMA, interrupts, hardware interaction

Soft Skills

• Strong analytical and problem-solving abilities
• Excellent communication skills
• Ability to work independently and in collaborative environments
• Quick learner with adaptability to new technologies

Mandatory Skills

• Backend: Java, Spring Boot
• Frontend: Angular
• Database: Oracle / SQL
• Node js

Job Description

Contribute to all software-development life-cycle phases including: domain and non-domain problem analysis, solution requirement gathering and analysis, solution design, implementation, code review, source-code control, source building deployment, validation, QA support, and production support.

Essential Duties and Responsibilities

•⁠ ⁠Maintain and enhance multi-tier messaging application suites (Java EE, Springframework, WAS, Oracle, DB2, MQ)

•⁠ ⁠Build and maintain IRIS4Health middle-tier message applications (IRIS Interop/Cache; Java, Drools, Kafka, Restful, MLLP, SQL)

•⁠ ⁠Build and maintain multi-tier Clinical Toxicology application (Angular, Java EE, Springframework, WAS, RHOS, Cache, SQL)

•⁠ ⁠Maintain stat-tracking application (two-tier Delphi, MySQL)

•⁠ ⁠Maintain and enhance Cytogenetics three-tier application (Java EE, WAS, DB2, Oracle, SQL, )

•⁠ ⁠Maintain and enhance Fibrosure application (Java EE, WAS, Derby)

•⁠ ⁠Define develop, validate, and release software products via agile processes for small and large projects

•⁠ ⁠Support applications and people via Kanban processes

•⁠ ⁠Collaborate with laboratory users to analyze problems, design and implement solutions for enterprise systems

•⁠ ⁠Provide support and troubleshooting of production systems according to an on-call schedule

•⁠ ⁠Document problem analysis, solution design, implementations, and system support guidelines

•⁠ ⁠Coach and train team members across lab system organizations to support and develop Java applications

•⁠ ⁠Communicate effectively and constructively with developers, QA, business analysts, and system users

•⁠ ⁠Design and depict via UML relational DB table models, object-oriented class models, messaging models, configuration models

•⁠ ⁠Understand, document, support, and improve inherited code and processes

•⁠ ⁠Help document knowledge and discovery with peer developers

Minimum Requirements

•⁠ ⁠Solid Java EE experience (Servlets, JMS, JSP, EJB, JCA, and JPA) development and support

•⁠ ⁠Solid InfoSystems Cache/IRIS for Health development and support

•⁠ ⁠A minimum of 1 years of JPA/ORM (Hibernate), Junit, XML/XSD, JSON experience or equivalent

•⁠ ⁠Solid SQL (and optionally PLSQL) experience

•⁠ ⁠Experience with Oracle DB including explain plan and or other query optimization techniques/tools

•⁠ ⁠Excellent verbal and written communication skills

•⁠ ⁠Strong UML modeling, ER and OO design, and data-normalization techniques

•⁠ ⁠Strong code-factoring philosophies and techniques

•⁠ ⁠Eclipse or NetBeans (or equivalent) IDE

•⁠ ⁠Strong understanding of client/server design, and smart recognition of separation-of-concern like functional behavior versus non-functional performance

Desired Requirements

•⁠ ⁠Java EE, Angular

•⁠ ⁠InfoSystem's Cache and/or IRIS for Health

•⁠ ⁠Springframework

•⁠ ⁠Modern deployment architectures using containers, API Gateways, load balancers, and AWS cloud based environments

•⁠ ⁠WebSphere or WebLogic, RHOS

•⁠ ⁠RESTful Web Services

•⁠ ⁠JMS interfacing, Apache Kafka, and IBM MQ

•⁠ ⁠Node.js/NPM, Bootstrap, or similar frameworks

•⁠ ⁠Git/BitBucket (git flow), Maven, Nexus, UCD, Jira (Kanban and SCRUM), agile workflow

•⁠ ⁠Unix shell script, DOS script

•⁠ ⁠SQL (optionally PLSQL)

•⁠ ⁠Design patterns

•⁠ ⁠HTML5, CSS3, and TypeScript development

•⁠ ⁠Ability to transform specific domain requirements into generalized technical requirements, and design and implement abstract solutions that are understandable and scalable in performance and reuse

•⁠ ⁠HL7 and/or Healthcare and/or Clinical Toxicology

•⁠ ⁠Oracle, MySQL, Derby DB

Roles & Responsibilities:

Build efficient, testable, and reusable PHP modules.

Solve complex performance problems and architectural challenges.

Integration of data storage solutions (may include databases, key-value stores, etc.).

Integration of User Interfaces developed by front end developers.

Skills and Qualifications:

· Must have a bachelor’s degree or above in Computer Science or in similar field.

· Minimum 4 years of experience in PHP web development.

· Strong knowledge of front-end technologies, such as JavaScript, HTML5, and CSS3

· Strong knowledge of PHP web frameworks (CodeIgniter, NodeJS)

· Experience in creating custom modules and themes.

· Expert knowledge in web architecture.

· Strong understanding of MVC design patterns and oops concept.

· Strong understanding of full synchronous behaviour of PHP.

· Experience with modern UI frameworks such as React, Angular or Vue.js

· Experience in MySQL and the ability to write SQL queries.

· Proficient understanding of source control management such as Git, SVN.

· Proficient understanding fundamental design principles behind a scalable application.

· Familiarity with limitations of PHP as a platform and its workarounds.

· Ability to create database schemes that represent and support business processes.

· Experience with Edu Tech companies will be preferred.

. Immediate Joiner Preferred.

Architectural:

Design and implement a software architecture

Select a technology stack

Design and configure infrastructure

Select a development toolkit (IDE, etc.)

Design and implement a database design

Improve and optimise the application architecture

Ensure scalability of the application

Ensure scalability of the infrastructure

Explore new technologies and decide whether to implement them

Strategy, planning, and design:

• Take end-to-end ownership of the product, identify technology requirements, define the future product vision, create preliminary design concepts for add-on modules and shape overall technology and product roadmap by collaborating with the founders, business development, and marketing team.
• Ensure user oriented design is the primary approach to product development across multiple screens, based on user behaviour data and direct customer feedback.

Implementation and deployment:

• Manage Product Release, QA cycles, feature implementation and on time delivery through in-house team and vendors.
• Collaborate with team and customers to define use cases.
• Creation of wireframes/prototypes, site maps and user-flows for web and mobile platforms.

Operational management :

• Support marketing by implementing technical requirements for SEO/product analytics.
• Establish and supervise a quality assurance process, including integration & system testing.
• Rigorously monitor key performance metrics and coordinate with various teams to take corrective actions if needed.
• Establish and forecast ROI of features and succinctly articulate competitive advantage.
• Set-up data collection and analysis system in collaboration with CEO to track key performance.

metrics.

Strong fundamentals in computer science/engineering and algorithm design.

Practical knowledge of computer software algorithms in machine/deep learning, NLP, Computer Vision etc.

Personal Requirements:

• Min of 7+ years of Hands on experience in Web app development, payment gateways implementation, architecture design, product management, databases and UI/UX in consumer facing applications.
• Experience on projects involving engineering and algorithmic functions, machine learning, deep learning and artificial intelligence is very advantageous.
• Creative self-starter who is comfortable with both taking initiative and working in teams.
• Strong communication skills.
• Willingness to learn and utilise emerging technologies.
• Sincere passion to use disruptive technologies that can be globally significant