Infrastructure and Network Architect

Keystone Solutions; Brussel; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

On-site consultancy

Diverse client projects

Professional development

Job summary

Keystone Solutions is seeking an experienced infrastructure architect for client-site missions in Belgium. You will design, deploy, and operate web infrastructure, security assets, and cloud deployments, collaborating with Security and DevOps.

The role requires at least 5 years in enterprise infrastructure, fluent English, and a solid background in WebSphere, Kubernetes, and security. You will guide architectural decisions, ensure 24/7 reliability, and contribute to reference architectures.

Qualifications

• Master's degree or equivalent by experience.
• Fluent English; French or Dutch a plus.
• At least 5 years of infrastructure architecture experience.
• Strong knowledge of WebSphere, Kubernetes, IIS, Tomcat and HTTP, plus security and cloud.

Responsibilities

• Deliver and maintain critical infrastructure services for the client web infrastructure and applications.
• Design scalable and resilient architectures and standardize assets.
• Provide 24/7 production support and incident response.
• Translate business requirements into robust, future-proof solutions.

Skills

5+ years of infrastructure experience

Fluent English

French or Dutch (plus)

Agile methodology

Education

Master's degree or equivalent by experience

Tools

WebSphere

Kubernetes

IIS

Tomcat

HTTP

ISVA

F5 WAF

API Gateway

HSM

OAuth2

TLS

Cloud environments

Job description

Mission Overview:

This is a consultancy mission at the client site, representing Keystone Solutions. As a Keystone Solutions consultant, you will be hired to work on client projects, bringing your expertise to dynamic environments and delivering value through our consultancy model.

Responsibilities:

• Deliver and maintain critical infrastructure services for the client, focusing on web infrastructure and applications.
• Design scalable and resilient solutions as part of technical architecture responsibilities.
• Standardize web infrastructure and security assets through industrialization.
• Ensure 24/7 operational stability by providing production support.
• Deploy and secure web applications in alignment with bank-wide standards, collaborating with cross-functional teams such as Security and DevOps.
• Conduct deep-dive analysis of application flows, performance bottlenecks, and incident root causes to ensure system reliability and efficiency.
• Create and maintain technical architectural designs for new or evolving workflows (OPAD & DTD's).
• Translate business requirements into robust, future-proof solutions.
• Lead technical investigations into production incidents, using tools like logs, traces, and APM data to isolate root causes in application flows.
• Conduct performance benchmarking and capacity planning for WebSphere and cloud (IaaS/PaaS) environments.
• Document findings and recommend architectural improvements to prevent recurrence.
• Partner with project architects, infrastructure engineers, and development teams to review and validate DTDs, ensuring technical feasibility and adherence to standards.
• Facilitate understanding of architectural documents across stakeholders, acting as a subject-matter expert for technical queries.
• Contribute to the definition, maintenance, and evolution of reference architectures for web infrastructure, promoting consistency and reusability.
• Develop and share best practices for performance tuning, flow optimization, and incident troubleshooting.
• Advocate for structured approaches in project delivery and smaller requests, providing guidance to peers and counterparts to ensure alignment with architectural principles.
• Deliver an end-to-end view of solutions, offering deep technical expertise in collaboration with other domain experts.
• Proactively monitor application performance and flow health, identifying risks before they impact operations.
• Guide the management of the deployed solution landscape, identifying opportunities for optimization, consolidation, or decommissioning.
• Proactively identify savings opportunities and propose actionable, realistic recommendations.
• Assess decommissioning candidates and drive their retirement through structured plans.

Requirements:

• Master's degree or equivalent by experience.
• No mandatory certifications, but TOGAF, ITIL, Agile, etc. are considered assets.
• Languages: Fluent English required; French and/or Dutch are a plus.
• At least 5 years of relevant experience in infrastructure architecture in enterprise environments.
• Broad knowledge of Web Application Hosting (WebSphere, Kubernetes, IIS, Tomcat, HTTP), Web Security (ISVA, F5 WAF, API GW, HSM, oAuth2, TLS, etc.), and experience in cloud environments.
• Solid technical background in at least two of the listed assets is preferable.
• Ability to understand bank-related business processes and assess impacts on business; experience with Agile methodology.
• Soft skills: Team player, quick self-starter, pro-active attitude, good communication and influencing skills, analytical and synthesis skills, autonomy, commitment and perseverance, ability to work in a dynamic and multi-cultural environment, customer-oriented, risk awareness, flexibility, strong interpersonal and communication skills, ability to work effectively with a wide range of constituencies in a diverse community.

Keystone Solutions Advantages:

• Consultancy Nature: You will work on-site as a Keystone Solutions consultant, representing our values and expertise.
• Dynamic Projects: Experience a wide variety of challenges across different client environments, ensuring no two missions are ever the same.
• Turbo-Charged Learning: Benefit from continuous professional development and broad learning experiences, accelerating your growth.
• Skyrocketing Ambition: Keystone Solutions is committed to your career progression, offering opportunities to advance within our consultancy framework.
• Values: Being a "K-Stone" means bringing integrity, excellence, and collaboration to every engagement.