Senior European Air-Cooled Chiller Controls Engineer

Johnson Controls; Dublin; On-site; EUR 95,000 - 130,000; Full time

Job summary

Johnson Controls in Dublin, Ireland, seeks a Senior Controls Engineer II to join our European air-cooled chiller engineering team. You will develop, test and release control software for European chillers, working with global teams on site in Dublin.

You will design control sequences, implement algorithms in MATLAB/Simulink, and ensure safety, efficiency and compliance with European standards while collaborating with mechanical, electrical and test engineers.

Responsibilities

• Develops and applies understanding of control theory and of the thermal, refrigeration, and electrical behaviour of air-cooled chillers that the control system has to manage
• Works under general supervision, following defined development processes to design, implement, test, and document control software for European air-cooled chiller platforms
• Develops control algorithms using MATLAB / Simulink and model-based design methods for embedded controllers, and supports their integration, verification, and release onto the chiller control platform
• Develops and tunes capacity control and staging logic: compressor staging and unloading, variable speed drive operation, condenser fan speed and head pressure control, expansion valve control, and leaving water temperature regulation
• Implements and verifies machine protection logic including pressure and temperature limits, freeze protection, low and high ambient operation, motor and drive protection, and safe shutdown and restart behaviour
• Applies European machinery and electrical safety requirements to control system design, including the Machinery Directive 2006/42/EC and the Machinery Regulation (EU) 2023/1230 that replaces it from 20 January 2027, EN 60204-1, and functional safety assessment of safety-related control functions to EN ISO 13849-1 and EN IEC 62061 as applicable
• Implements refrigerant safety and leak mitigation control functions required by EN 378 and EN IEC 60335-2-40 for A2L and A3 refrigerants - refrigerant detection interfaces, alarm handling, forced fan and ventilation operation, and isolation valve control - and supports the associated risk assessment, as applicable
• Supports product cybersecurity work under the EU Cyber Resilience Act, Regulation (EU) 2024/2847: secure-by-design and secure update practice, access control and credential handling, software bill of materials, and the vulnerability handling and reporting processes now in force ahead of full application in December 2027; contributes to the cybersecurity content of the technical file supporting CE marking
• Develops and verifies the part-load control behaviour that determines seasonal efficiency under EN 14825, working with the ratings and product engineering team to correlate control behaviour against rated SEER, SEPR, and ηs,c performance and Ecodesign / ErP compliance
• Implements and tests the building management and communication interfaces used in Europe - BACnet/IP and BACnet MS/TP, Modbus RTU and TCP, and Johnson Controls connected equipment platforms - and supports integration with Metasys and third-party building management systems
• Supports electrical and electromagnetic compliance of the control system together with electrical engineering, covering the EMC Directive 2014/30/EU, the Low Voltage Directive 2014/35/EU, and the Radio Equipment Directive where wireless connectivity is fitted
• Plans and executes laboratory and field validation of control performance: prepares test plans, runs units on the Dublin test stands, analyses recorded data, and troubleshoots control, stability, and reliability issues
• Responsible for engineering deliverables including control specifications, sequence of operation documents, parameter and setpoint definitions, test reports, and software release documentation
• Provides controls support to application engineers, factory operations, commissioning teams, and product technical service across Europe, and can mentor new hires at the Engineer I level
• Collaborates with mechanical, electrical, test, and product engineers through all phases of product development, and with the global controls and software teams in York (PA), Wuxi, and Izmir

Job description

Johnson Controls in Dublin, Ireland, seeks a Senior Controls Engineer II to join our European air-cooled chiller engineering team. You will develop, test and release control software for European chillers, working with global teams on site in Dublin.

You will design control sequences, implement algorithms in MATLAB/Simulink, and ensure safety, efficiency and compliance with European standards while collaborating with mechanical, electrical and test engineers.