Site Reliability Engineer (F/M)

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Publish Date: Sep 4, 2021

Location: Zaventem, Vlaams-Brabant, BE

Company: worldline

About Worldline
Worldline [Euronext: WLN] is the European leader in the payment and transactional services industry. With innovation at the core of its DNA, Worldline’s core offerings include pan-European and domestic Commercial Acquiring for physical or online businesses, secured payment transaction processing for banks and financial institutions, as well as transactional services in e-Ticketing and for local and central public agencies. Thanks to a presence in 30+ countries, Worldline is the payment partner of choice for merchants, banks, public transport operators, government agencies and industrial companies, delivering cutting-edge digital services. Worldline’s activities are organized around three axes: Merchant Services, Financial Services including equensWorldline and Mobility & e-Transactional Services. Worldline employs circa 12,000 people worldwide, with 2019 revenue of circa 5.3 billion euros. worldline.com

Advanced Infrastructure

Reports to
SRE-Lead / Head of Infra

Who are we
Worldline is a global leader in the fintech market, with more than three decades of experience. Its
footprint gives scale to projects and talents.
Innovation is part of our DNA and our diverse community of experts keep anticipating the evolution of
commerce worldwide. We are shaping the future of payments.
We are looking for a person who will differentiate our company from its competitors. You will be joining
Worldline, a company in full transition to a new era of payments, covering hardware, software and
services as tooling for merchants to grow their business.
Within the advanced infrastructure, your mission as sysadmin engineer in the SRE teams will be to
enforce the scalability, speed, efficiency and the infrastructure reliability, as a result of owning the
services design, implementation and maintenance.
Under the guidance of the SRE manager, your primary role is doing engineering on software and systems
to build at a scale an automated infrastructure and fault tolerance PaaS.

What you’ll do
Infrastructures services are managed by multiple teams, you will join one of these
teams with today's focus on:

  • Building and scaling our virtualization stack on VMware
  • Scaling and automating the Block storage for our datacenters based on SAN technology
  • Making sure the backup strategy is covering all needed assists and the internal clients
    can consume it
  • Driving the Hardware management so we scale up in time and stay cost efficient, be
    the reference point for the hands-on teams in the datacenter.
  • Making sure the NTP service is up and can be consumed by all platforms as this is a
    business critical service.
  • Building and scaling the HSM service for all payment platform
  • Taking part in the IAM automation


Who you are

Academic or Bachelor level of education or equivalent by experience

Minimum of 3-5 years of Linux experience in a HA environment

Self-starter, autonomous

Ability to engage with both technical and non-technical staff at all levels in the organisation

Quick learner

Ability to make your way through a complicate stack autonomously

Automation is your answer to (almost) everything

Open source enthusiast (but not only)

Believe in Infrastructure as Code

Target 0 support solution and self healing systems

Security minded

Ability to find trade of in: 

  • stability vs. agility,
  • operational work vs. software engineering,
  • proactive vs. reactive work

Your favorite books are:


Must Have

  • Excellent knowledge of VMware, Storage, Hardware, Backup, NTP
  • Used to work with source version control like Git, GitLab, GIT flows and CICD
  • Used to work with Puppet (we do almost-everything with puppet)
  • Used to work with Terraform (we aim that all pieces of infra is defined with code)
  • Excellent knowledge of Scripting (powershell / puppet / CICD ./ Python / GO / JASON /
  • Understanding of network protocol (IP, DHCP, DNS, BGP, Load balancing,...)
  • Experience with multi DC setup and large Vmware clusters (in different countries)
  • Experience with hybrid infra (On prem + cloud)
  • Experience with AWS (Workspace, ) and Azure
  • Experience with security standards (PCI-DSS,...)
  • Focus on automation

Nice to have

  • Experience with ELK
  • Knowledge of GO
  • Docker, Kubernetes
  • Familiar with service discovery in a micro-frontend architecture
  • Used to work with Windows and Linux servers
  • Excellent communication skills in English
  • Good knowledge of Dutch and/or French are a plus 

What is in it for you
Taking part in shaping the future of payments!
A permanent contract with strong, competitive salary package, linked to profile and experience
Joining a dynamic, young growing team of highly skilled Linux engineers working in DevOps mode
To become the best version of yourself, we put a strong emphasis on personal growth with trainings,
coaching’s and internal mobility

The 20 000 employees of Worldline are all different but share the same values. You can see it in the way we behave. We are curious and humble – we are learning every day, we keep things simple and everyone engaged. In our fast-moving industry, we are adaptable and life-long learners. Everyone demonstrates the same dedication to quality and efficiency. We have an entrepreneurial spirit and sense of service. Above all, we never turn our back on a challenge. These values nurture a dynamic and innovative team where everyone can develop and grow.

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