Linux System Administrator

JatApp is an IT product company that creates valuable high-tech products used daily by millions worldwide.

We are looking for a Linux System Administrator for the company’s largest product - a cross-platform VPN service. Our product helps at least 10 million users around the world to meet their needs in cyber protection. Our goal is to enter the top 5 best VPN services in the world.

Your responsibilities will be:

• Install, configure, and maintain Linux servers (Debian/Ubuntu) across a large-scale environment. You'll be responsible for managing server performance, monitoring uptime, optimizing speed, and analyzing traffic

• Monitor the quality of services, proactively identify potential issues, and implement solutions to ensure seamless operation

• Respond to and resolve server and service incidents effectively. Provide technical support to clients and internal teams, assisting them with any Linux-related challenges

• Communicate with hosting providers, address service violations and abuse issues, and negotiate with partners to expand our server capacity

• Conduct regular audits of our infrastructure, manage payments and renewals, and maintain comprehensive documentation

What you’ll need:

• 2+ years of hands-on experience administering Linux (Debian/Ubuntu) in a large-scale environment. You possess a strong understanding of commands, file systems, processes, and network configurations

• Solid understanding of TCP/IP networking and VPN principles and protocols

• Experience with monitoring tools such as Nagios and Prometheus+Grafana to track server health and performance

• Proven ability to create and maintain technical documentation, conduct infrastructure audits, and communicate effectively with partners and hosting providers. 

• Excellent written communication skills, particularly in business correspondence. 

• At least an Intermediate level of English or higher

• Ability to analyze large datasets, identify potential issues, and troubleshoot effectively.

• Proactive attitude, detail orientation, and strong analytical skills

• A collaborative team player who can effectively communicate technical information to both technical and non-technical colleagues

• Owner-Mindset: You take ownership of your work and demonstrate a responsible approach to server infrastructure management

Will be a plus:

• Familiarity with network VPN protocols and tools like WireGuard, OpenVPN, IPSec, and iperf for speed measurement and traffic optimization

• Knowledge of HTTP/HTTP2/TLS/DNS protocols

• Experience with network load balancing (e.g., HAProxy, BGP protocol)

Recruitment process: Interview with a recruiter - Test Task - Technical interview - Final Interview - Reference Check - Offer

We offer:

• Mental and Physical Health: health care is a must, so at JatApp we will cover health insurance for you

• Benefits Cafeteria: choose what you like most — sports, food delivery, home office supplies — and we will cover your expenses under available budget

• Knowledge sharing: in addition to internal events, you will have access to the Projector library

• Remote-First Culture: it’s up to you whether to work remotely or at our coworking space 

• Personal Equipment Policy: for sure, you will have everything you need to work efficiently

• Learning and Development Opportunities: it's a real pleasure for us to watch you learn, so we're happy to cover your learning and development costs, as well as English courses

• Community of like-minded people: at JatApp you will work in a team of like-minded people who are ready to launch a product, run a marathon, or climb Hoverla together

• Creative freedom: we encourage initiative and creative thinking, so with us, you can be yourself and have the freedom of professional expression

• Legal & Finance Support: we cooperate with the best financiers and lawyers who will be ready to help solve any of your questions upon request

• Time-off Policy: 20 vacation days per year, 5 days for sick leave without medical confirmation, unlimited sick leaves with a doctor's note, 3 personal days, and 2 days off for special events or occasions