Senior Full Stack AI Engineer

Role - Full Stack AI Engineer Location Den Hague, NL (Hybrid, 2 days per week) Type - Permanent/B2B Contract Job Description: A senior, hands-on full stack engineer to lead the AI-accelerated rebuild of a complex, long-standing enterprise application to full feature parity. This role combines deep engineering experience with modern AI-assisted, spec-driven development while shaping architecture, structuring requirements discovery with subject-matter experts, and ensuring enterprise-grade security, resilience and compliance. Key Requirements 12+ years of hands-on full stack development of enterprise-grade applications, across front-end, back-end and data layers.Strong command of modern languages, frameworks, microservices, REST/event-driven APIs and cloud-native architecture.Proven ability to define and own an architecture vision, set patterns, standards and drive them through delivery.Deep expertise in enterprise security, data privacy and adherence to multiple organisational and regulatory policies.Experience engineering for business continuity, resilience, high availability and disaster recovery (BCM).Excellent communication and stakeholder-management skills across technical and business teams.Hands-on experience with spec-driven development frameworks (e.g GitHub Spec-Kit) for writing specifications, plans and tasks that drive code generation.Practical experience with intent-based development, translating high-level intent into working, testable software rather than manual line-by-line coding.Proficiency with AI pair-programming assistants such as GitHub Copilot paired with Claude Code for large-scale, production-grade code generation and refactoring.Working experience with agentic AI IDEs / cloud coding agents (e.g., AWS Kiro) for spec-to-code and autonomous task execution.Ability to reverse-engineer and re-platform legacy applications from limited vendor documentation, strategy/configuration files and tacit process knowledge.Skilled at structuring SME knowledge-elicitation by defining a repeatable approach to convert undocumented process knowledge into precise, AI-consumable specifications and developer-ready requirements.Ability to take initiative and lead technically along with people management skills without being implicitly authoritative and to orchestrate interfacing with external databases, systems and cross-functional teams.Behavioural / Soft Skills Self-starter who brings structure to ambiguous, evolving programmes.Collaborative, consultative style & comfortable guiding SMEs and peers alike.Ability to simplify and communicate technical aspects with a delivery and outcome-first mindset.