Platform Engineer

3E· Security, Infra & IT
Apply Now ↗
📍 Brussels, Brussels, Belgium

About this role

As our operations are expanding, we are looking for a talented Platform Engineer to support us in the design, development and maintenance of our cloud-based and on-premises infrastructure. You will take ownership and coordinate infrastructure-related projects for our SynaptiQ and R&D department application platforms.

You will join 3E’s infrastructure team, working in close collaboration with the Site Reliability Engineering, Development, and Information Security teams, reporting to the Information Security Teamlead.

As a Platform Engineer, you are the go-to person for all infrastructure changes:

Technical

  • You assist with the planning and execution of infrastructure changes
  • You implement and maintain infrastructure automation and CI/CD pipelines
  • You ensure infrastructure security, compliance, and best practices are followed
  • You’re a key player in the Incident Management Process

Advisory

  • You provide technical guidance and mentorship to teams on infrastructure matters
  • You document infrastructure architecture, processes, and runbooks for the team

Strategic

  • You evaluate and recommend new technologies and tools to improve infrastructure reliability
  • You monitor, maintain, and optimize infrastructure performance, security, and reliability

3E is looking for a battle-hardened Platform Engineer capable of assessing the risks related to infrastructure changes and having experience in implementing mitigating controls. You follow DevOps best practices when building infrastructure projects in Terraform and Docker. You’re a team player and support teammate in their daily operations of 3E's production environments.

Our ideal candidate:

  • Is fluent in English, the main language in our company
  • Is based in Belgium (or can relocate to Belgium easily, within a short timeframe)
  • Has 3 years of relevant professional experience in a similar position
  • Has experience with Linux administration and immutable OS
  • Has experience working with Docker and Kubernetes
  • Is experimented in networking, performance troubleshooting (e.g. tcpdump, strace, ss)
  • Has experience with configuring IPSec VPN tunnels
  • Has experience with AWS or other relevant cloud provider
  • Experience in designing/operating scalable infrastructure
  • Is a team player with good communication skills
  • Comes with strong analytical skills
  • Is security minded

Bonus points for:

  • Experience working on internal applications platform and programming
  • Experience working in an ISO27001 certified workplace

Our offices are hidden in the centre of Brussels with a view on a pond, with ducks and a heron bringing a regular visit. In addition to a stimulating atmosphere in a highly motivated group of people, 3E offers a unique opportunity to further develop yourself in a company/team with an ambitious growth plan, delivering innovative services.

Furthermore:

  • Training on the job by our experts so you get to know our solution and work in and out
  • Flexibility in our open-minded company.
  • Home working (2 days per week)
  • An international environment: projects in over 100 countries worldwide, colleagues of over 20 nationalities.
  • A salary package including hospitalisation insurance, pension saving, €9 meal voucher/day, flexible income plan, 20 legal days off + 12 compensation days (per full year worked), sustainable transport subscription or bike allowance (€0.36/km).

Frequently Asked Questions

Is the salary disclosed for the Platform Engineer position at 3E?
The salary for this Platform Engineer role at 3E is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Platform Engineer position at 3E located?
This Platform Engineer role at 3E is based in Brussels, Brussels, Belgium. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Which team or department does the Platform Engineer at 3E belong to?
This Platform Engineer position is part of the Security, Infra & IT department at 3E. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Platform Engineer position at 3E?
Click the "Apply Now" button on this page. You will be redirected to 3E's official application portal hosted on workable where you can submit your application directly.
When was the Platform Engineer job at 3E posted?
This Platform Engineer position at 3E was posted on Mar 2, 2026. Apply as soon as possible — early applications are often reviewed first.
Platform Engineer
3E
Apply for this role ↗

You'll be redirected to 3E's official application page on workable.