Freelancer Opportunity
Job title: Senior Solution Architect
Job location: Brussels, Belgium
Job duration: 2025-11-03 to 2026-12-31
Hours: 40 hrs./week
Role description:
Seeking a Senior Solution Architect to lead the design and onboarding of xNFs (Container Network Functions or Virtual Network Function) onto a horizontal Telco Cloud platform. This platform is built on Red Hat OpenStack and OpenShift, running over a Cisco based SDN network.
The architect will play a key role in translating business requirements and service flows into detailed connectivity and infrastructure designs, producing both High-Level Designs (HLD) and Low-Level Designs (LLD) that span the complete service chain.
Key Responsibilities:
Translate business and service flows into technical connectivity and infrastructure requirements.
Design end-to-end solutions for onboarding xNFs, aligned with Telco Cloud architecture principles.
Produce comprehensive HLD and LLD documentation, covering all components in the service chain.
Collaborate with cross-functional teams including NF vendors, cloud infrastructure, security and network architects.
Define and validate connectivity and service chaining requirements involving Virtualization / Container stack, Load Balancers, Firewalls and SDN network.
Ensure compliance with industry standards and internal design governance.
Support automation and lifecycle enablement of onboarding processes.
Lead architecture reviews and provide technical guidance to project teams.
Oversee initial implementation in a lab environment and lead the handover to the production team which is a truly hands-on role.
Key Competencies:
Strong ability to bridge business and technical domains, translating service flows into infrastructure and connectivity designs.
End-to-end architectural thinking, with both broad service chain understanding and deep technical insight into key components of a private Telco Cloud Stack.
Expertise in technologies such as Linux, OpenStack and OpenShift, Load balancing and firewall integration, Cisco ACI fabric and Nexus (N7K).
Proficiency in creating and maintaining HLD and LLD documentation.
Strong communication and stakeholder engagement skills.
Agile and collaborative working style.
Keep an End-to-end (E2E) perspective when designing a solution.
Key Experience:
7+ years of experience in Telco or Cloud Solution Architecture roles.
Proven experience onboarding Telco Applications (VNFs/CNFs) onto cloud-native platforms.
Experience with multi-vendor environments and complex service chains.
Familiarity with CI/CD pipelines, network automation, and observability tools.
Experience working with security and compliance in Telco environments.
Preferred Certifications or equivalent in experience:
Red Hat Certified Architect (RHCA) or equivalent.
Kubernetes Certified (CKA/CKAD).
Cisco ACI or Palo Alto certifications.
Advanced networking certifications
Azure Fundamentals
Ready to make a difference?
Apply now and start your journey with Team Possible! We want to get to know you.
After your application, we will verify your profile and get back to you within 3 working days.
If you’re successful, you can expect the following steps:
● an initial conversation with our recruiter - Swati Kumari
● 1st round of interview with HM
● Final round of interview with HM
About Proximus
We are Team Possible turning tech into opportunities.
We are driven by four core pillars: "I care," "I make a difference," "I radically simplify," and "I embrace the future". This means you'll join a team that genuinely cares for customers and colleagues, is empowered to make a real impact, strives to radically simplify complex challenges, and is always looking ahead to embrace the future of technology. We believe in an inclusive and safe environment where everyone can thrive, offering extensive career development resources, including access to over 5,000 training modules and a minimum of 5 days of training per year, to help you continuously learn, grow, and tackle bold challenges with us.