Senior Cloud / DevOps Engineer

About Proximus NXT

Proximus NXT Luxembourg supports all organizations in their digital transformation, by providing holistic ICT & Telecommunication solutions, as well as tailored managed services. With our partners and customers, we co-create opportunities and enable growth in a secure and sustainable manner. As a result of our unique expertise in next-gen IT services, mobile and advanced connectivity, we help our customers achieve their ambitions and realize their vision.

Together with them and our partners we implement sovereign and trusted solutions that make people work smarter.– www.proximusnxt.lu

Your mission :

Currently, we are seeking a talented DevOps Senior Engineer to join our dynamic team. The candidate will play a pivotal role in steering the organization through its digital and transformation journey.

Overall Job Description

As a Senior DevOps Engineer, you will be a key contributor in building and operating our API and automation platform capabilities, leveraging enterprise API Gateway technologies (Kong / Gravitee / Tyk) and workflow orchestration platforms such as n8n (and not limited to these). You will help design, deploy, and run secure, scalable gateway and orchestration services across our Kubernetes- based environments (EKS, OpenShift, TKGI), enabling consistent API exposure, traffic management, policy enforcement, and workflow automation across domains.

You will also drive platform automation and reliability through Infrastructure as Code (Terraform, Ansible), strengthen CI / CD and GitOps practices (primarily GitLab and Argo), and support end-to-end operations across AWS and on-prem infrastructure by covering observability, resilience, security controls, and standardized onboarding for squads and products.

Professional Skills

• Strong understanding of cloud computing technology and infrastructure as well as cloud design patterns and strategies (On-premise / AWS).
• Solid understanding of cloud-native architecture principles and transformation patterns.
• Deep hands-on expertise with enterprise API Gateway platforms (Kong / Gravitee / Tyk) including gateway / ingress patterns, API definitions (routes / services / APIs), policies / plugins, consumers / apps, RBAC, OIDC / SAML SSO integration, mTLS, rate limiting / quotas, request / response transformation, JWT / OAuth2 patterns, WAF / threat-protection patterns, and multi-environment / multi-tenant design.
• Strong knowledge of API Gateway operations at scale (Kong / Gravitee / Tyk) : HA deployments, control-plane / data-plane (or equivalent architecture), upgrades and lifecycle management, backup / restore, performance tuning, capacity planning, and integration with logging / metrics / tracing stacks, including SLO / SLI-driven operations.
• Deep practical experience with workflow / orchestration platforms (n8n and comparable tools) : workflow design, triggers / webhooks, resilient execution (timeouts, retries, error handling, dead- letter-like patterns), secrets / credentials management, environment promotion, versioning, reusable components / templates, and governance / guardrails for safe multi-team adoption.
• Ability to integrate API Gateway + orchestration into a platform ecosystem : API lifecycle management, CI / CD and GitOps enablement, service catalogue onboarding, auditability and compliance, standardized patterns for squads, and operational integration with enterprise IdP, secrets vaults, and observability tooling. Deep knowledge of container and container orchestration services : Kubernetes, Docker, K8s operators. Openshift / EKS experience is a plus.
• Deep knowledge of infrastructure as a code and automation tools (Terraform, Ansible). Cycloid experience is a plus.
• Familiarity with GitOps principles and tooling. ArgoCD experience is a plus.
• Extensive experience with CI / CD tools such as : GitLab CI, Argo Workflows, Azure DevOps.
• Familiarity with Platform Engineering principles and tooling.
• Familiarity with observability principles and tools such as : Prometheus, Grafana, ELK Stack.
• Solid understanding of network, security, and database architecture.
• Familiarity with Integration platforms, including API Management solutions as well as messaging solutions.
• Ability to work collaboratively in a team environment and communicate effectively with stakeholders at all levels.
• Strong problem-solving skills and the ability to work under pressure to meet tight deadlines.

Activities

Your profile :

Qualifications / Experience :

Requirements : EU citizenship.

o Early : 07 : 00 – 16 : 00.

o Late : 11 : 00 – 20 : 00.

Our offer :

A professional and stimulating work environment in the IT & telecom sector. Multiple career opportunities within the Proximus Group at national and international level, cutting-edge training in new technologies, a wealth of recognized expertise. We also offer an attractive salary package and many other benefits.

Our company is an equal opportunity employer, valuing diversity in all its forms. We firmly believe that each individual brings a unique richness to our teams, and we are committed to creating an inclusive environment where every voice counts.

If at the end of the process your application is successful, you will be asked to provide an extract from your criminal record. Your personal information will be handled in compliance with applicable data protection laws.