Site Reliability Engineer

AI in this role

Design and scale cloud-native applications and infrastructure as a Site Reliability Engineer in Prague.

kubernetesdockercloud-native

site-reliability-engineeringinfrastructure-designsoftware-engineering

Location: Praha, Czechia

Thales people architect identity management and data protection solutions at the heart of digital security. Business and governments rely on us to bring trust to the billions of digital interactions they have with people. Our technologies and services help banks exchange funds, people cross borders, energy become smarter and much more. More than 30,000 organizations already rely on us to verify the identities of people and things, grant access to digital services, analyze vast quantities of information and encrypt data to make the connected world more secure.

Thales in the Czech Republic employs over 400 people from 45 different nationalities. A total of 15 teams work on projects for government agencies, banking, mobile services and the Internet Of Things (IoT) technology. At the core of our business is the development of software which we configure and embed in a multitude of different devices and form factors. These include many kinds of payment cards, SIM cards, travel passes, secure eBanking devices, authentication tokens, machine identification modules (MIM), and secure ID documents including ePassports, eID and eHealth cards, as well as eDriving licenses. Because of the international environment surrounding us every day, it comes as no surprise that English is our official corporate language.

At Thales, trust is the foundation of the digital world. Our Digital Identity & Security (DIS) division helps businesses and governments protect identities and secure digital interactions. Within DIS, the On-Demand Connectivity (ODC) business line plays a pivotal role in powering secure eSIM technology, enabling seamless, remote connectivity for devices around the globe.
With eSIM solutions, you would help companies in deploying IoT devices, manage remote workforces, and launch connected products without the delays and logistics of physical SIM cards. Imagine logistics fleets updating routes on the fly, smart factories remotely optimizing production lines, or wearables connecting instantly to local networks during international travel—all with zero physical intervention. Learn more about our eSIM solutions here.
We’re looking for a Site Reliability Engineer (SRE) who thrives in both application-level problem-solving and infrastructure design. This role is about more than just keeping systems running — it’s about applying software engineering practices to make our ODC applications more reliable, scalable, and performant in a cloud-native, production-grade environment.

What You’ll Do

As part of the SRE team within Thales ODC, you'll be instrumental in bridging the gap between application development and operations.

You will:

Work in a DevOps environment, supporting ODC products running on Google Cloud Platform (GCP), with a focus on applying SRE principles for reliability and automation.
Take ownership of both applications and infrastructure, ensuring the availability, performance, and scalability of our cloud-based services.
Develop and maintain Infrastructure-as-Code (IaC) and automation pipelines using tools like Terraform, Helm, and GitLab CI/CD.
Collaborate with development teams to enhance product reliability using a “you build it, you run it” mindset.
Act as a key technical voice during Change Advisory Board (CAB) reviews for high-impact changes, providing Tier II expertise.
Manage real-time system monitoring and drive continuous improvements in observability and alerting.
Support the end-to-end deployment of ODC applications in the cloud — from design and configuration to rollout and performance tuning.
Perform operational readiness reviews and shape product roadmaps with a focus on stability and scalability.
Guide technical documentation, incident response processes, and SLA compliance across tiers.
Participate in on-call support rotations (24/7) to ensure production systems remain resilient.

What You Bring:

A degree in Computer Science or a related technical field.
4+ years of experience with application deployment, system operations, and cloud infrastructure.

Proficiency with:

GCP services and Kubernetes in production environments
Automation tools like GitLab, Terraform, Helm
Linux systems, networking, and HTTP(S)/TCP/IP protocols
Scripting languages like Shell or Python
Experience with Agile methodologies and a DevOps/SRE mindset.
A strong understanding of CI/CD pipelines, system integration, and monitoring tools.
Ability to translate business requirements into scalable technical solutions

Preferred qualifications:

GCP and/or Kubernetes certifications
Experience in the Telecom domain or with eSIM technologies
Familiarity with Scrum, incident management, and service delivery frameworks

Why Thales?

Be part of a mission-critical team enhancing the future of connected technology.
Work on cutting-edge applications that impact millions of users worldwide.
Collaborate in a global, agile environment where your voice and ideas matter.
Take ownership of solutions across the full lifecycle — from build to run — and be empowered to drive meaningful change.

At Thales, we don’t just operate infrastructure — we engineer it to support applications that keep the digital world connected and secure. If you're passionate about reliability, automation, and cloud-native applications, we invite you to apply and be part of our journey.

You can also check us out on Atmoskop - https://www.atmoskop.cz/nazory-na-zamestnavatele/3077450-thales-dis-czech-republic-s-r-o

At Thales we provide CAREERS and not only jobs. With Thales employing 80,000 employees in 68 countries our mobility policy enables thousands of employees each year to develop their careers at home and abroad, in their existing areas of expertise or by branching out into new fields. Together we believe that embracing flexibility is a smarter way of working. Great journeys start here, apply now!

How we rate this

Site Reliability Engineer at Thales rates 0 out of 100 for how much of the daily work is AI. That makes it Little AI (AI Level 1 of 4). The level is about AI in the job, not seniority.

Classification

Little AI. AI is not part of the work.

●●●● Builds AI80 to 100
●●●○ Works on AI60 to 79
●●○○ Uses AI40 to 59
●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Open the description and count.

Prepare for this job

A free preview built only from this posting: what it asks for, what you could be asked in an interview, and how to adjust your resume.

Skills and AI tools this role asks for

Site Reliability EngineeringInfrastructure DesignSoftware EngineeringKubernetesDockerCloud Native

Questions you could be asked

Tell me about a project where site reliability engineering was part of your work. What did you do?
Tell me about a project where infrastructure design was part of your work. What did you do?
Tell me about a project where software engineering was part of your work. What did you do?
What's a project where you used Kubernetes hands-on?
Walk me through how you've used Docker in your day-to-day work.

Adapt your resume

List these exact terms on your resume: Site Reliability Engineering, Infrastructure Design, Software Engineering, Kubernetes, and Docker. An applicant tracking system matches the wording, not the idea.
Attach one line of real, concrete experience to at least one of them — a tool named with nothing behind it rarely survives a human read.

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