Job Description

Job Description
The position is aimed at optimizing web and system-level performance, participating in the design, improvement and maintenance of scalable, secure and high-performance web infrastructures. The role has a strong focus on performance, isolation, resource management and system-level programming within Linux environments, with active involvement in the technical evolution of core solutions.
Responsibilities:
Optimizing web performance by developing and implementing solutions to improve web server performance, request management, and overall system efficiency, using benchmarking and measurements to validate improvements.
Configuration, optimization and expansion of web servers such as Nginx, Apache and LiteSpeed.
Analysis and improvement of the performance of PHP controllers and data transfer mechanisms for processing incoming web requests.
Design of scalable and high-performance web infrastructures, as well as associated infrastructure solutions.
Implementation of security measures to protect against web attacks and reinforce the security of the web server in production environments.
Optimization of MySQL and MariaDB databases, improving queries, performance and reliability in database administration for web applications.
Maintaining and improving LVE, including limiting resources, CPU, memory, I O and other related functions.
Maintenance and improvement of MySQL Governor, working on the limitation and optimization of database resources.
Maintained and improved CageFS, focusing on file system isolation, user isolation mechanisms and security limits.
Development of new functions for limit systems, designing and implementing new resource limitation mechanisms and improvements on existing ones.
Development of new functions for isolation systems, creating new technologies and improving current mechanisms to increase safety and performance.
Design of scalable, high-performance system-level solutions for resource management and isolation.
Deep involvement in Linux system calls and system-level programming.
Leadership of technical initiatives, making proposals that influence the technical direction of web optimization and the main functions of CloudLinux.
System performance optimization through profiling, benchmarking, and algorithmic optimization at the web and system level.
Making technical decisions based on data, validating approaches through concrete measurements and tests.
Actively contributing to open source projects and upstream public codebases.
Using modern AI tools and techniques to improve productivity, problem solving and optimization solutions.
Orientation and training of engineers, conducting technical reviews and establishing engineering best practices.
Collaboration with interdisciplinary teams to define the technical strategy and roadmaps.
Resolving complex production issues related to web performance, limits, isolations and system-level functionality, implementing long-term solutions.
Requirements:
More than six years of professional software engineering experience with Python.
Previous experience in senior, staff or principal engineering positions.
Advanced knowledge of Python applied to web optimization, tools, automation and system-level tasks.
Demonstrable experience in web performance or web performance optimization projects.
In-depth knowledge and practical experience with web servers such as Nginx, Apache and LiteSpeed.
Experience with PHP controllers and optimizing web request processing.
Experience in system-level programming and low-level system optimization.
Knowledge of Linux kernel internals, system calls, and kernel space concepts.
Experience managing resources using resource limits, cgroups, namespaces, or other similar technologies.
Knowledge of Linux system administration, kernel architecture and system optimization.
Level of knowledge in security, including web attacks, isolation mechanisms and security in Linux.
Experience in MySQL and MariaDB, including database optimization and administration.
Data-driven approach, with the ability to validate technical decisions through benchmarking and measurements.
Experience contributing to open source projects or upstream codebases.
Understanding of the network stack, especially TCP IP and HTTP.
Ability to design scalable, maintainable and reliable systems both at the web infrastructure and systems levels.
Experience in technical leadership, mentoring, technical reviews, and promoting engineering best practices.
Knowledge of CI CD pipelines and DevOps practices.
Communication skills to convey complex technical concepts to technical and non-technical audiences.
Ability to collaborate and work effectively in remote and distributed environments.
Upper-intermediate or higher level of English.

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