J

Johnson Controls

Provides smart building technology and services

Junior Product Engineer

Full-Time
No salary listed
Entry
Bachelor's
Dublin, Ireland
Hybrid
Mechanical EngineeringDesign Engineering

About the job

Requirements
  • A Bachelor of Science in Mechanical Engineering or a related engineering discipline or science is required.
  • The role is entry-level; previous internship, co-op, or related work experience is preferred.
  • Understanding of fundamental fluid and thermal principles is required.
  • Working knowledge of 3D computer-aided design (CAD) and engineering drawing practice is required.
  • Willingness to learn and apply European mechanical and refrigeration codes and standards, including CE marking, the Pressure Equipment Directive, the Machinery Directive, and EN 378, is required.
  • Ability to organize and process large amounts of data is required.
  • Good written and verbal communication skills are required.
  • Ability to work in a fast-paced, schedule-driven, team-oriented environment is required.
  • Willingness to travel up to 10%, primarily within Europe, is required.
Responsibilities
  • Build understanding of theories, concepts, technical principles, and processes related to fluid, thermal, refrigeration, and other mechanical aspects of air-cooled chillers.
  • Work under close supervision, follow work instructions and defined processes, and take direction from more experienced engineers.
  • Follow the project plan and participate in design activities with other team members.
  • Support delivery of engineering deliverables, including design specifications, design reviews, and data analysis.
  • Learn and apply European mechanical and safety codes and directives, including CE marking, the Pressure Equipment Directive, and the Machinery Directive, as well as harmonized standards such as EN 378 and EN 14511.
  • Support the build, instrumentation, and operation of laboratory test programs; collect, reduce, and present test data under guidance.
  • Assist with selecting mechanical components, including heat exchangers, fans, valves, and refrigerant piping, considering cost, performance, and availability.
  • Provide day-to-day support to factory operations, the laboratory, and product technical service on assigned components.
  • Support sustaining released product, including gathering information to support design changes.
  • Communicate with project team members and report progress on assigned tasks.
  • Apply standard technical and mathematical principles, theories, concepts, and best-practice methodologies in the field.
  • Continuously increase expertise across chiller design, theory, construction, operation, and applications, and participate in process improvement.
  • Adhere to the Company's Code of Conduct and Business Ethics standards.
Desired Qualifications
  • Internship, co-op, or placement experience in HVAC, refrigeration, or another industrial product environment.
  • Exposure to laboratory testing, instrumentation, and data acquisition.
  • Familiarity with refrigeration systems and the European Union F-Gas Regulation.
  • Familiarity with HVAC systems and motor-driven mechanical engineering design and testing.
  • Exposure to structural, thermal, or computational fluid dynamics analysis.
  • Experience with enterprise resource planning (ERP) or material resource planning (MRP) software.
  • Familiarity with European regulatory standards such as EN 378, EN 14511, and the Ecodesign/ErP framework.

About the company

Johnson Controls transforms environments where people live, work, learn, and play by providing smart, healthy, and sustainable buildings. It offers comprehensive digital solutions through its OpenBlue platform, serving healthcare, education, data centers, airports, stadiums, manufacturing, and government sectors with a portfolio of building technology, software, and services focused on efficiency, safety, and sustainability. The company operates in more than 150 countries with about 100,000 experts and aims to reimagine building performance to benefit people, places, and the planet.

Company Size

10,001+

Company Stage

IPO

Headquarters

Cork, Ireland

Founded

1885

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Simplify's Take

What believers are saying

  • Q3 2026 sales hit $6.6 billion; organic growth reached 10%, lifting margins.
  • Record backlog reached $21 billion in July 2026, fueled by data-center orders.
  • JCI closed Alloy and Nantum in 2026, expanding OpenBlue and cooling capabilities.

What critics are saying

  • A 2026 HVAC price-fixing lawsuit names JCI alongside Bosch, Carrier, Trane, and others.
  • The 2024 restructuring plan still targets $400 million costs through fiscal 2027.
  • PFAS, asbestos, and environmental liabilities persist after the June 2026 Wisconsin settlement.

What makes Johnson Controls unique

  • OpenBlue now embeds Nantum AI’s occupancy-based HVAC optimization across air and water systems.
  • Alloy Enterprises gives JCI proprietary liquid-cooling components for AI data centers.
  • Johnson Controls sells mission-critical service and controls across 150 countries, creating sticky installed-base revenue.

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Benefits

  • Company Vehicle
  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Health Savings Account/Flexible Spending Account
  • Life Insurance
  • Disability Insurance
  • 401(k) Company Match
  • Employee Referral Bonus
  • Wellness Program
  • Employee Assistance Program
  • Paid Vacation

Growth & Insights and Company News

Headcount

6 month growth

-4%

1 year growth

-4%

2 year growth

-4%
FinSMEs
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Pulse 2.0
Apr 27th, 2026
Johnson Controls acquires Nantum AI to boost AI-driven energy optimisation in OpenBlue platform

Johnson Controls has acquired Nantum AI, a New York-based developer of AI algorithms for building energy efficiency, to enhance its OpenBlue digital ecosystem. The deal adds advanced AI-driven control capabilities for optimising HVAC systems and reducing energy consumption. Nantum AI's technology enables real-time optimisation of building airflow based on occupancy, extending OpenBlue's capabilities beyond central HVAC systems to include granular, system-wide control. The company has demonstrated energy savings exceeding 10% for customers by leveraging data from occupancy patterns, weather conditions and utility trends. The acquisition expands OpenBlue's optimisation capabilities from water-side systems to include autonomous AI-driven control across both air- and water-side applications. The combined offering is being piloted across complex environments including healthcare campuses and manufacturing facilities.

Toronto Stock Exchange News Today
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Ring Capital joins Enerin's Series A to decarbonise high-temperature industrial heat

Enerin, a Norwegian industrial heat pump technology company, has completed the third tranche of its Series A round, adding Paris-based Ring Capital to its investor consortium. The round includes Climentum Capital, The Footprint Firm, Johnson Controls, Move Energy, PSV Hafnium and Momentum. The company's HoegTemp system delivers thermal energy at temperatures up to 250°C, targeting the industrial heat segment responsible for over 20% of global CO2 emissions. Each installation avoids approximately 36,000 tonnes of CO2 equivalent over its lifetime by replacing fossil-fuel boilers. Enerin is transitioning from development to serial production, with three active pilots and a recent contract with Roche. The funding will scale manufacturing operations and accelerate product development. CEO Arne Høeg said Ring Capital's involvement strengthens the company's ability to deploy solutions across Europe.

Yahoo Finance
Mar 6th, 2026
Insteel reports fastest revenue growth among building products stocks despite missing Q4 estimates

Insteel reported Q4 revenues of $159.9 million, up 23.3% year on year, but missed analysts' expectations by 1.3%. The steel wire reinforcing products manufacturer delivered mixed results, beating earnings per share estimates whilst falling short on revenue. Despite achieving the fastest revenue growth among the five commercial building products stocks tracked, Insteel recorded the weakest quarterly performance in the sector. The group collectively beat consensus revenue estimates by 1.2% and saw share prices rise 3.4% on average since earnings. Johnson Controls led the sector with revenues of $5.80 billion, up 6.8% year on year and exceeding expectations by 2.8%. Insteel's stock has risen 3.6% since reporting and currently trades at $34.90.

PR Newswire
Feb 18th, 2026
Johnson Controls to acquire Alloy Enterprises, boosting data center cooling efficiency by up to 35%

Johnson Controls has signed an agreement to acquire Alloy Enterprises, a Boston-based thermal management technology company, to strengthen its position in the data centre cooling market. Financial terms were not disclosed. Founded in 2020, Alloy Enterprises specialises in advanced direct liquid cooling components that can improve thermal management efficiency by up to 35% and reduce pressure drop by up to 75%, resulting in lower overall cooling system energy use. The company's proprietary Stack Forging manufacturing process creates single-piece components with embedded microgeometries for maximum heat transfer. The acquisition complements Johnson Controls' existing thermal management portfolio and aligns with its strategy to deliver differentiated cooling solutions for AI-driven data centres. The transaction is expected to close in fiscal Q3, subject to regulatory approvals.