PLC Automation Engineer

H2site
H2site

Software Engineering

Posted on Aug 11, 2026

PLC Automation Engineer

Location: Loiu

Introduction

About H2SITE:

H2SITE is a technological company that uses advanced membrane reactor technology to solve the hydrogen transport problem by converting hydrogen carriers with well-known supply chains and separating hydrogen gas blends into fuel cell purity hydrogen.

Founded in 2020 in Bilbao, Spain, it emerged as a spin-off from two renowned research and development centers in collaboration with ENGIE New Ventures as its first industrial investor: TECNALIA, the largest private research center in Southern Europe specializing in membranes and material sciences among other fields, and the Eindhoven University of Technology (TUe), a reference in process intensification. Headquartered in Loiu, the company employs over 60 team members in its unique membrane production facilities located in Loiu, Spain.

We have built a membrane factory that is unique in the world, where we manufacture our units that provide solutions for the hydrogen transport problem. For our development we rely on the local industrial ecosystem and top-level international investors.

We have developed a technology of membrane reactors for the separation and production of hydrogen in situ from different feedstocks, such as ammonia, methanol, formic acid, syngas from waste…

Offer

As a PLC Automation Engineer, you will be responsible for developing PLC and SCADA software, hardware testing and commissioning at customer locations of continuous process plant projects, working together with process commissioning engineers, electrical engineers and electrical installation suppliers.

You will be responsible also for remote access connection systems, third party equipment integration and implementation of modifications on existing systems, giving support both remotely and on customer locations.

Features

Functions:

  1. Ensure the implementation of remote control and data collection of all the units installed at clients.
  2. Implement and modify control procedures in the Siemens PLCs with TIA Portal.

PLC Programmer & Data Analyst:

  • Develop, implement, and maintain the data analysis system (control room).
  • Program PLCs and review electrical engineering.

PLC Programming:

  • Design, write, and modify programs for PLCs using specific programming languages (e.g., Ladder Logic, Function Block Diagram, Structured Text)
  • Develop programs that meet the requirements of the automation process.
  • Select and configure appropriate hardware and software for control systems.

3.Pema for H2SITE equipment on site.

4.Maintaining records of planning, PEM tasks, equipment control, and calibration .

5.Supervise electrical/automation subcontractor activities on subcontractor facilities, H2SITE and on site.

6.Supervise, together with operations team, the mechanical, electrical and control commissioning of all the units.

7.Participate in the FAT and SAT activities.

8.Collaborate in the design of the electrical definition of the units and the subsequent installation.

9.Support basic and detailed engineering phases for the definition of the I&C activities.

10.Participate in the definition of the equipment’s electrical connection.

11.Support QHSE policies and programs development.

12.Report unsafe conditions and adverse environmental events.

Professional Experience

What you’ll need to succeed:

  • Industrial Automation/Electronics Engineering Bachelor’s Degree.
  • At least 3+ years of experience in programming and commissioning industrial equipment with, solid knowledge of Siemens PLC and TIA Portal and WinCC Unified SCADA.
  • Ability to program both, a complete project and to implement modifications on existing systems.
  • Experience with industrial networks: Profinet, Modbus TCP, OPC and S7 Communications.
  • Knowledge of basics of electrical design and ability to read electrical drawings.
  • Ability to troubleshoot pneumatic and electrical systems.
  • Ability to perform electrical cabinets FAT Test.
  • Ability to travel to project sites, supplier facilities and customer locations up to 30-40% of time.

Other desirable experience:

  • Experience with industrial gases (hydrogen, ammonia, methanol…).
  • Experience commissioning continuous process plants.
  • Knowledge of industrial cybersecurity, remote connections, networks configuration and segmentation, routers and gateways configurations.
  • Experience supervising electrical installations subcontractors.
  • Familiarity with Rockwell Automation / Allen-Bradley PLCs and Studio 5000 Logix Designer

What we offer

What we offer:

  • Participate in an impactful R&D project: Join a pioneering initiative dedicated to combating climate change and making a real difference in the world through hydrogen.
  • Culture of innovation: Work in an environment that fosters creativity and innovation, where your ideas and solutions are valued and implemented.
  • Collaborative and supportive team: Be part of a diverse, talented and welcoming team that values your contribution and encourages growth.
  • Flexibility and autonomy: Enjoy a flexible work schedule (intensive workday in summer) with the option to telecommute, allowing you to balance your professional and personal life.
  • Opportunities for professional growth and development: Access to continuous training programs, workshops and resources for professional development, ensuring your constant growth.
  • Coverflex Card: Includes allowances for meal tickets, transportation and more, giving you the flexibility to manage your daily expenses.
  • Access to language learning: Get free access to a platform designed to help you improve and master new languages at your own pace.