System Development

System development at Critical Software focuses on delivering robust, compliant, and scalable architectures for medical and pharmaceutical applications.


We support the full lifecycle — from concept and requirements definition to integration, validation, and certification. 



Requirements Engineering


We define and manage system-level requirements with full traceability, ensuring alignment with stakeholder needs and regulatory constraints. Our process includes stakeholder analysis, risk identification, and configuration management, helping teams avoid costly rework and delays. 



Architecture & Specification 


Using Model-Based Systems Engineering (MBSE), we model and validate system architectures, define sub-system interfaces, and optimize performance across domains. Our work complies with ISO 15288 and IEC 60601, ensuring that the systems are safe, interoperable, and future-ready. 



Integration & Validation 


We support the integration of hardware, software, and communication layers, ensuring seamless operation and compliance with standards like ISO 14971 and IEC 62304. Our teams apply both Agile and V-Model approaches, tailoring the methodology to project needs. 



Legacy System Evolution 


We help clients modernize outdated systems through gap analysis, reverse engineering, and re-design. This includes updating documentation, improving performance, and ensuring compliance with current safety and regulatory standards. 



Digital Engineering & Simulation 


We use digital twins, simulation environments, and predictive analytics to validate system behavior before deployment. This reduces risk, improves efficiency, and accelerates time-to-market. 



Certification Support 


Our system development services include full documentation and traceability to support audits and certification processes. We help clients prepare technical files, risk management reports, and validation evidence aligned with MDR, FDA, and other global regulations.

Ana
Rita
Ana Rita (who prefers to be called Rita) has been our Business Development Manager for the Medical Devices and Lifesciences European market since the beginning. She manages all customer relationships in this sector, including potential new clients and partners. On a personal note, Rita loves attending concerts and movies, traveling as often as she can with family or friends, and is a passionate advocate for animal welfare.
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Philipp
Roessler
Philipp leads Critical Software’s Boston office and drives the growth of its Medtech business in North America, expanding its presence and building strategic partnerships. Outside of work, he enjoys haidong gumdo, chess, and football—both playing and coaching. A dedicated youth football coach for over a decade, he’s also introduced all three of his sons to the game.
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Sérgio
Pereira
Sérgio is a Principal Engineer with extensive experience in the medical devices and life sciences industries. He has a proven track record of developing and managing diverse projects while collaborating with multidisciplinary teams. At Critical, he leads the technical aspects of medical device projects, ensuring seamless integration and precise definition of software and hardware specifications. In his spare time, Sérgio enjoys cycling and music.
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