Deadline Date: Thursday 22 October 2026 Requirement: Senior Solution Engineer Location: Braine-l'Alleud, BE Full Time On-Site: Yes Time On-Site: 100% Total Scope of the request (hours): 300 Required Start Date: 27 November 2026 End Contract Date: 31 December 2026 Required Security Clearance: NATO SECRET Duties & Role: 1. System and Solution Engineering • Analyse operational, functional & project requirements & translate them into implementable DCIS solutions. • Define the overall technical solution and system architecture using the established DCIS Node, Module & Service taxonomies. • Ensure that the resulting system delivers the required end-to-end functionality & emergent behaviour. • Perform technical trade-off analyses considering performance, interoperability, security, deployability, resilience, maintainability, cost, schedule & technological maturity. 2. Model Based Systems Engineering • Apply MBSE throughout the engineering lifecycle. • Map project requirements against existing Requirement Models, Implementation Guidelines & Implementation Constraints. • Maximise reuse of approved Modules, Services, architectures & engineering patterns. • Identify gaps where existing Requirement Models or standardized building blocks cannot satisfy project requirements. 3. Complex Systems Product Ownership – Operational Nodes • For designated Nodes already introduced into operational service, act as the Complex Systems Product Owner: • Maintain technical ownership and system-level design responsibility for assigned operational Nodes throughout their lifecycle. • Maintain an authoritative understanding of the Node architecture, configuration, interfaces, dependencies, capabilities & design constraints. • Ensure that modifications to individual Modules or Services do not compromise the overall coherence, interoperability, performance, security or operational capability of the Node. • Assess operational technical issues from an end-to-end system perspective & coordinate their resolution with the appropriate SMEs, Model Custodians & service organizations. • Analyse requests for change, obsolescence issues, technology refreshes, security changes & evolving operational requirements to determine their impact on the complete Node. • Define & maintain the technical evolution path & Node roadmap, aligned with Module & Service roadmaps & the wider DCIS Target Architecture. • Identify technical debt, architectural divergence, lifecycle risks & emerging obsolescence before they become operational constraints. • Initiate or recommend engineering activities required to maintain the technical viability of the Node. • Provide system-level technical guidance to operations, maintenance & service-management organizations where issues require design-level knowledge. • Ensure that operational experience & lessons identified are fed back into the Modularity Framework, Requirement Models & future system designs. • Maintain consistency between the as-designed, as-built and as- operated technical baselines of the Node. • Support configuration & change-control processes by assessing the system-level impact of proposed changes. 4. Multi-Domain Technical Integration • Integrate engineering contributions across DCIS technical domains, including as applicable: Network & Communication Access; WAN/LAN and network services; SATCOM & tactical communications; Radio systems; Infrastructure & Platform services; compute, virtualization & cloud technologies; storage & data services; cybersecurity & security services; identity & access management; Business Support Services; automation, orchestration & Infrastructure-as-Code; physical deployable infrastructure & associated supporting systems. 5. Technical Coordination • Act as the primary technical focal point for assigned projects & operational Nodes. • Coordinate the engineering contributions required from the different technical domains. • Translate system-level requirements & operational issues into clear engineering tasks & technical questions for the appropriate SMEs & Model Custodians. • Integrate the outputs produced by the different engineering disciplines into a single coherent solution. • Identify conflicting requirements, assumptions or design decisions & drive their technical resolution. Specific Working Conditions: Possible travel to other Agency & NATO sites within Belgium up to 1 - 2 times per month Requirements Skills, Knowledge & Experience: The candidate must have a currently active NATO SECRET security clearance • University degree in Systems Engineering, Telecommunications Engineering, Computer Engineering, Electronic Engineering, Computer Science or another relevant discipline. • 10 years of relevant professional engineering experience, including significant experience with complex ICT/CIS, defence, aerospace, telecommunications or other highly integrated technical systems. • Experience in Systems Engineering and/or Solution Architecture applied to complex systems. • Professional working proficiency in English, including the ability to produce and review complex technical documentation Complex Systems Engineering • Significant experience in the architecture, design, integration, verification or lifecycle management of complex systems involving multiple technical domains. • Demonstrated ability to translate operational or business needs into system requirements, architectures and implementable technical solutions. • Experience defining and managing system boundaries; functional decomposition; interfaces; dependencies; constraints; non- functional requirements; system-level performance Technical Leadership • Experience as a Technical Lead, Lead Systems Engineer, Solution Architect, System Architect or equivalent senior engineering role. Experience technically coordinating multidisciplinary engineering teams and SMEs • Ability to provide clear technical direction • Experience resolving technical disagreements and driving engineering decisions across organizational and