Wirtek

Wirtek is a Denmark-founded software engineering firm born out of Nokia in 2001 and listed on Nasdaq First North since 2006. The company operates four tech hubs across Europe—Aalborg (Denmark), Cluj-Napoca and Bucharest (Romania), and Porto (Portugal)—with 200+ engineers. Over 25 years, it has built expertise in energy systems, IoT platforms, and complex software modernization, reaching 93 countries with its solutions and connecting 500,000+ devices through its IoT Cloud platform.

The company's origin as a Nokia spin-off shaped its focus on reducing engineering risk and accelerating delivery for enterprise clients. Recent acquisitions—Seluxit (2024, renewable energy and wireless IoT), Pragmasoft (2024, clean energy software), and CoreBuild (2021)—have expanded its service depth. Wirtek reports a 6+ year average client partnership length, suggesting sticky relationships in energy and industrial automation verticals.

Services and capabilities

Wirtek operates two divisions: Services (custom development and integration) and Solutions (scalable, off-the-shelf platforms). On the Services side, the company offers digital engineering for scalable platforms, connectivity and automation systems, and quality assurance. It applies AI-assisted delivery to accelerate development cycles and reduce manual testing overhead.

On Solutions, Wirtek offers four main products: Wirtek IoT Cloud (open-source IoT platform powering 500,000+ devices), Solar Tech (photovoltaic maintenance management), Smartplug Energy Optimisation (cuts avoidable energy waste in refrigeration and similar equipment), and Tenant Consumption Management (web and mobile platform automating energy data and billing across multi-tenant sites). A fifth offering, Warehouse Logistics ESG Optimisation, delivers energy and CO₂ data tracking for logistics operations.

The company delivers across three business domains: Energy Industry (know-how across production, transmission, distribution), Digital Engineering (system integration and operations optimization), and Connectivity & Automation (device connectivity, data-driven automation, secure enterprise system integration). Work methodology emphasizes flexible collaboration models, structured pragmatic process, and adaptive roadmaps that maintain clear direction while adjusting priorities based on feedback.

Notable work

Rituals partnered with Wirtek to rebuild the front-end of its e-commerce app, delivering visually striking design with seamless transitions, fast loading via dynamic asset loading, and personalized recommendations. Spectralink has engaged Wirtek since 2009 for specialized QA on DECT and Wi-Fi products, including equipment testing and embedded software development for telecommunications equipment.

Gardena's smart garden platform, developed with Wirtek, now processes over 5 billion data events annually from hundreds of thousands of devices. The solution involved embedding hardware into products and managing production, testing, and security. Crestron's home automation received mobile app enhancements (lighting control via Kotlin and Swift) and a remote update system built on Azure Cloud and .NET 6, replacing manual update processes.

For electrical substations, Wirtek delivered a monitoring application enabling analysts to manage devices across zones, track security alerts, monitor real-time alerts, and analyze historical data. Opoura, an energy trading platform, uses a Wirtek-developed ETRM solution to handle energy trading and balance management. The Port of Aalborg selected Wirtek to automate energy management and optimize efficiency across its operations.

Client testimonials emphasize speed of team ramp-up, stability in long-term partnerships, and deep domain knowledge. Spectralink notes Wirtek's ability to "ramp up fast, maintain and grow the teams" with specialized engineers. Efacec credits "deep understanding of SCADA and automation" enabling efficient scaling of energy management solutions.

How they work

Wirtek offers flexible short-term and long-term project-based engagements, custom solutions tailored to client requirements, and dedicated team extension models. The company maintains an adaptive roadmap approach, defining clear direction upfront while continuously adjusting priorities based on feedback and business needs. Communication appears direct and regular, with management accessibility noted as a strength by clients like ProMark ("quick turnarounds on communication, good, dedicated team and easy communication with management").

Recent career postings indicate hybrid roles across Portuguese and Romanian hubs, suggesting a blend of nearshoring (EU-based) and remote-capable delivery. The company describes itself as "not nearshore, not offshore—just EU shore," emphasizing that operations remain within the European Union.

Team and credentials

Founded in 2001 by Nokia personnel in Aalborg, Denmark, Wirtek is led by CEO Michael Aaen, CFO Mads Greiffenberg (joining June 2025), COO Flaviu Zapca, and CRO Niels Erik Wøhlk. The company employs 200+ engineers across Denmark, Portugal, and Romania. As of 2006, Wirtek has been a public company listed on Nasdaq First North Copenhagen.

The company holds expertise in energy systems, telecommunications (via Spectralink QA work since 2009), renewable energy (via Seluxit and Pragmasoft acquisitions), and IoT platform architecture. No specific ISO, SOC 2, or GDPR certifications are mentioned in the source material. Pragmasoft, a Wirtek subsidiary, received PME Líder 2025 recognition from IAPMEI (Portuguese business federation) for financial performance and credibility.