About Constantin Mihai
Architect of secure, governed, and scalable enterprise platforms — with deep specialization in IAM solutions, multi-cloud strategy and cloud-native modernization. Trusted by the European Commission to lead platform-level decisions across identity, security and distributed systems. Track record of transforming legacy estates into future-proof architectures: 97% latency reduction, 99.5% availability across 30+ migrated systems, and department-wide AI adoption frameworks built from the ground up.
English
Native or bilingual
Dutch
Conversational
French
Fluent
Romanian
Native or bilingual
Can work on-site
Brussels (up to 50km)
Experience
- European CommissionCloud ArchitectNovember 2022 - February 2026 (3 years and 3 months)•Main achievement: Eradicated fragmented and high-maintenance user-role mechanisms by architecting a new cloud-agnostic IAM microservice. By migrating legacy policies to a role-and-task tertiary application using both SOAP and REST APIs, I achieved a clean separation of responsibilities for user provisioning, effectively future-proofing the system for multi-cloud evolution and reducing architectural technical debt.•Eliminated architectural fragmentation by designing a reusable domain service layer across 7 bounded contexts - decoupling business logic from data access through repository patterns and aggregate roots, significantly improving maintainability and enabling independent scalability per domain.•Transformed internal development efficiency by automating 90% of repetitive operational workflow; by orchestrating standardized scheduled scripts, I successfully streamlined engineering teams workflows thus harboring focus for higher-value features.•Established a quality first culture by integration of mandatory pull request analysis, reducing bug introduction by 80% and minimizing manual reviews.•Orchestrated a 30-day pilot program to evaluate AI-assisted development tools, bridging the gap between emerging tech and practical engineering. By designing standardized prompt engineering frameworks and reporting on technical trade-offs, I accelerated department-wide AI adoption and established the foundational best practices for secure, high-speed AI integration.
- European CommissionApplication ArchitectJanuary 2019 - October 2022 (3 years and 9 months)• Main achievement: Reduced ongoing maintenance effort by 50% through targeted application modernization and root-cause analysis and problem management.• Successfully migrated legacy applications built on ColdFusion to Node.js resulting in an increase of 15% of application performance.• Boosted system performance by optimizing a core functionality with over 20 econometric dimensions, reducing average latency from 900ms to 20ms and allowing a 4x increase in user load.• Rearchitected data layer by transitioning from a horizontal model to a vertical one, which resulted in minimization of storage used by 30%.• Architected and implemented historical data and visualization capabilities which led to improved decision making by stakeholders.
- METRO SYSTEMSSenior Oracle DeveloperJanuary 2016 - December 2018 (2 years and 11 months)• Main achievement: Led enterprise-scale cloud transformation across 30+ legacy retail systems - reducing infrastructure spend by 20% while increasing application availability from 90% to 99.5%, establishing a resilient foundation for ongoing digital modernization.• Identified and permanently resolved critical bottlenecks across retail procurement and merchandising workflows — eliminating an average of 20 weekly support requests and restoring operational continuity across store-facing systems.• Stabilized Oracle production environments for 2,000+ retail and supply chain users by implementing a high-performance database governance framework. By executing real-time SQL tuning, resolving systemic locking issues and delivering standardized runbooks for support teams, I reduced P1 incidents by 70%, improved response times by 75%, and slashed MTTR from 90 to 30 minutes.
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Education
- Master's degreeAcademy of Economic Studies of Bucharest, Faculty of Economic Cybernetics, Statistics and Informatics2014Master's degree
- Bachelor of EngineeringPOLITEHNICA University of Bucharest2011Bachelor of Engineering