OT Integration & Data Engineer

Location: Madrid, Community of Madrid, Spain

Department: GreenVolt España (k)

Workplace: hybrid

Employment Type: full

Description

Greenvolt Next Holding is looking for a Contract Senior Manager who will play a critical role in safeguarding the contractual and commercial interests of the organization across large-scale EPC and PPA projects. Acting as the primary advisor to the CEO DG, Country Manager and Project Director, this role is responsible for interpreting contractual obligations, managing variation and claim processes, coordinating risk management activities, and ensuring contractual compliance with clients and subcontractors.

What you will do 

As an OT Integration & Data Engineer, you will connect renewable assets, SCADA environments and industrial data platforms with Greenvolt enterprise and asset management solutions. You will act as the technical bridge between OT, IT, Asset Management and technology partners, strengthening internal ownership of the OT data integration layer. 

Main responsibilities 

• Design, implement and maintain integrations between SCADA, plant systems, historians, monitoring platforms and enterprise solutions. 

• Manage OT/IT interfaces and industrial communications using OPC UA, Modbus and MQTT, including tag mapping, naming conventions and plant-edge data standardization. 

• Administer or coordinate industrial historians and time-series platforms, ensuring appropriate data collection, availability, retention and retrieval. 

• Monitor data pipelines and interfaces, identifying missing, delayed or inconsistent data and resolving protocol, connectivity and integration issues. 

• Define and apply standards for data quality, metadata, asset hierarchies and technical documentation across countries and technologies. 

• Support onboarding of new and acquired assets, including integration requirements, commissioning data and interface validation. 

• Coordinate technical activities with EPCs, OEMs, O&M providers and digital platform vendors. 

• Work with OT Technology Assurance, Operational Asset Reporting and IT Data & Analytics to ensure operational data is fit for reporting and analytics. 

Requirements

• 5+ years of experience in OT data, industrial systems integration, automation or a comparable engineering role. 

• Hands-on experience integrating SCADA, PLC, historian or industrial monitoring environments with enterprise platforms. 

• Experience troubleshooting production-critical interfaces, connectivity, tag mapping and data-quality issues. 

• Experience in renewables, utilities or industrial environments with strong knowledge of IEC 62443 and OT cybersecurity principles. 

• Strong knowledge of OPC UA, Modbus, MQTT, SCADA data models, industrial communications. 

• Experience with historians such as PI System, Canary, InfluxDB or equivalent technologies. 

• Good SQL knowledge and familiarity with APIs, middleware, time-series data and systems integration patterns. 

• Understanding of OT networking, segmentation and secure remote access. 

• Ability to produce interface specifications, data-flow diagrams and clear technical documentation. 

• Hands-on problem solver with strong analytical and troubleshooting capability.