About the Position

Senior Linux Systems Administrator

EmbedIT is a leading global IT services provider specializing in building and operating large-scale, high-performance financial platforms. We deliver digital transformation and robust cybersecurity solutions to millions of customers worldwide. In Saigon, we foster a collaborative, energetic, and international environment where talent is nurtured and continuous learning is part of our DNA. As a Senior Linux Systems Administrator, you will be a key driver of infrastructure reliability, automation, and platform modernizations.

We are looking for an experienced and proactive Senior Linux Systems Administrator to lead the architecture, automation, and continuous improvement of our enterprise Linux infrastructure, specializing in Oracle Linux and Red Hat ecosystems. In this role, you will design high-availability layouts, drive Infrastructure-as-Code (IaC) initiatives, manage complex database-hosting OS environments, and act as a senior technical authority. You will mentor mid-level administrators and collaborate closely with DevSecOps, database administrators, and security teams.

Responsibilities

Design, build, and optimise large-scale Oracle Linux (8/9/10) and RHEL environments, including disaster recovery and high-availability clustering with Pacemaker/Corosync.
Lead Infrastructure-as-Code and automation across the estate using Ansible, Ansible AWX, and Terraform, managing configuration drift and automated patching pipelines.
Troubleshoot and performance-tune at the OS and kernel layer (UEK, sysctl, LVM, multipathing) for high-load Oracle Databases and financial applications.
Establish and enforce security hardening baselines (CIS, DISA STIG) and manage privileged access with CyberArk PAM and HashiCorp Vault.
Provide Level 3 escalation support and lead infrastructure migration projects.
Mentor mid-level and junior administrators and collaborate closely with DevSecOps, database, and security teams.

Requirements

6+ years in Linux systems engineering within large-scale enterprise environments, with deep RHEL and Oracle Linux expertise.
Mastery of Red Hat-like OS architecture, kernel parameter tuning, and advanced storage (multipathing, LVM, SAN/NAS over Fibre Channel and iSCSI).
Strong high-availability clustering experience (Pacemaker/Corosync).
Strong Ansible expertise (complex multi-environment roles and collections) and infrastructure provisioning with Terraform.
Fluent English (C1 or higher), with a track record of mentoring and clear technical communication with stakeholders.

Nice to Have

Experience in fintech, e-commerce, or other high-transaction environments, including Oracle Database hosting and Oracle RAC storage.
Custom Ansible module development or scripting in Python or Go, and DevOps/GitOps and agile workflows.
Certifications such as RHCE, RHCA, Oracle Certified Expert (Oracle Linux), or AWS SysOps / Azure Administrator.

We Offer

20+ years of engineering expertise delivering large-scale IT transformation and fintech solutions.
Impact platforms used by 140M+ users across Europe and Asia.
Join a 500+ global engineering community working across 8 time zones.
Work in a truly international environment, collaborating with teams across Czech Republic and APAC.
Hybrid and flexible working setup that supports work-life balance.
Competitive compensation package including base salary, allowances, 13th-month salary, and performance bonuses.
Premium healthcare insurance, 24/7 accident coverage, and annual health checkups.
Extra perks including meal allowance, phone allowance, company laptop, and parking support.

About the Company

Our company is a dynamic fusion of innovation, skill, and vision, dedicated to transforming industries through technology. In this landscape, your unique talents and perspective are the keys to our collective success, contributing to groundbreaking solutions and strategies. Here, you're not just a part of the team; you're a vital contributor to a journey of continuous improvement and exceptional results. Join us, and let's shape the future together, where your growth is an integral part of our shared story.

What do we expect?

Strong technical proficiency and problem-solving skills
Commitment to quality and attention to detail
Proactive attitude and the ability to take initiative
Excellent communication and teamwork capabilities
Adaptability to rapidly changing environments
A customer-focused approach to solutions
Continuous learning and self-improvement mindset
Ability to manage time effectively and meet deadlines

Who are we looking for?

Innovative problem-solvers with a passion for technology
Team players dedicated to collaborative success
Individuals with a continuous learning and growth mindset
Detail-oriented professionals with a focus on excellence
Adaptable personalities ready to thrive in a dynamic environment

Our benefits

5 weeks of paid holiday per year plus up to 5 days of personal time off for personal illness or illness of immediate family member.
EmbedIT pays 55% of what you spend on meals at any of our office locations.
Hybrid setup includes the option of working from your home.
Pension insurance allowance of CZK 2,000 per month.
Access to premium healthcare or a 500 CZK monthly allowance for health activities and relaxation.
One extra month of leave for every five years worked.
Savings on your behalf at O2, Air Bank, Makro, Home Credit and other vendors.
Active support for skill development, hands-on experience, and participation in exciting projects.
Annual all staff parties, fun teambuildings, sport events and Fail Forward sessions.

Our hiring process

Expect a concise hiring process focused on evaluating your fit through an application review, a skills interview, and a culture fit discussion. Our goal is to ensure clarity and feedback throughout.

Here’s what you can expect

Application

Start by submitting your application through our online portal. Make sure to showcase your skills, experiences, and enthusiasm for the position.
Screening

Our recruitment team will carefully review your application to assess your qualifications and alignment with the role. If you meet the criteria, we will reach out to schedule an initial screening call or interview.
Interviews

During the interview stage, you’ll have the opportunity to showcase your capabilities and learn more about EmbedIT’s culture and expectations. Depending on the position, you may participate in multiple rounds of interviews with various team members and stakeholders.
Assessments

For certain roles, we may conduct assessments or technical tests to evaluate your skills and suitability for the position. The assessments help us ensure a good fit between your abilities and the requirements of the role.
Offer

If you successfully complete the interview and assessment stages, we’ll extend a job offer to you. This offer will include details about compensation, benefits and other pertinent information.
Onboarding

Once you accept our offer, we’ll guide you through our onboarding process which includes orientation sessions, training and introductions to your team and key stakeholders, and assign you a “buddy” to help get you settled. We want to ensure that you feel welcome and prepared as you begin your journey at EmbedIT.

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Senior Linux Systems Administrator

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