PLC developer

MKS Instruments; Poznań; Hybrid; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Health insurance

Hybrid work setup

Annual bonus

Wellness programs

Team events

Job summary

MKS is seeking a Senior Software Engineer (PLC Developer) in Poznań to design, develop, and maintain PLC control logic for automation projects. You will work with engineering and commissioning teams to ensure seamless integration and high-quality software.

Lead the development using JScript and IEC 61131-3 languages, collaborate across disciplines, and mentor junior engineers while prioritizing safety and customer satisfaction.

Qualifications

• Bachelor’s or Master’s degree in Automation Engineering, Electrical Engineering, Computer Science, or a related field.
• 5+ years of experience developing software for PLC-based automation systems.
• Strong experience with JScript or similar scripting languages.
• Hands-on experience with IEC 61131-3 programming languages, ST and SFC.
• Knowledge of EtherCAT, CANBus, PROFIBUS, and OPC UA.
• Experience troubleshooting and optimizing PLC-based automation systems.
• Understanding of industrial automation and SCADA environments.
• Ability to work independently while collaborating within cross-functional teams.
• Strong problem-solving, communication, and customer-focused mindset.
• Fluent English communication skills.

Responsibilities

• Develop and maintain PLC control logic using JScript and IEC 61131-3 languages.
• Design automation solutions meeting customer requirements with reliability, performance, and safety.
• Integrate PLC systems with industrial equipment and business applications via networks and protocols.
• Configure and support EtherCAT, CANBus, PROFIBUS, and OPC UA.
• Test, troubleshoot, and optimize automation systems for efficiency.
• Collaborate with cross-functional teams to deliver projects.
• Provide technical support to customers by diagnosing and resolving issues.
• Promote software quality through documentation and code reviews.
• Mentor and support junior engineers; promote continuous learning.
• Make safety the top priority and ensure compliance with standards.

Skills

JScript

Structured Text

SFC

EtherCAT

CANBus

PROFIBUS

OPC UA

English communication

Troubleshooting

Education

Bachelor’s or Master’s degree in Automation Engineering / Electrical Engineering / Computer Science

Tools

Git

Job description

A Day in Your Life at MKS

As a Senior Software Engineer (PLC Developper) within the VCS Automation Team, you will play a key role in designing, developing, and maintaining PLC control logic for advanced automation projects. You will contribute to the delivery of reliable and efficient automation solutions, working closely with engineering, development, and commissioning teams to ensure seamless integration across systems. In this role, you will report to the Lead of VCS Automation.

You Will Make an Impact By:

• Developing and maintaining PLC control logic using JScript and IEC 61131-3 programming languages (Structured Text and Sequential Function Chart) to support industrial automation projects.
• Designing automation solutions that meet customer requirements while ensuring reliability, performance, and safety.
• Integrating PLC systems with industrial equipment and business applications , including communication through industrial networks and protocols.
• Configuring and supporting industrial communication technologies such as EtherCAT, CANBus, PROFIBUS, and OPC UA.
• Testing, troubleshooting, and optimizing automation systems to ensure efficient operation and rapid resolution of technical issues.
• Collaborating with cross-functional teams , including software developers, commissioning engineers, and project stakeholders, to deliver successful customer projects.
• Providing technical support to customers by diagnosing and resolving automation system issues in a timely and effective manner.
• Driving high standards of software quality through documentation, code reviews, and adherence to development best practices.
• Mentoring and supporting junior engineers by sharing technical expertise and promoting continuous learning across the team.
• Making Safety your #1 priority , ensuring compliance with MKS safety standards and customer requirements.

Skills You Bring

• Bachelor’s or Master’s degree in Automation Engineering, Electrical Engineering, Computer Science, or a related field.
• 5+ years of experience developing software for PLC-based automation systems.
• Strong experience with JScript or similar scripting languages.
• Hands-on experience with IEC 61131-3 programming languages, particularly Structured Text (ST) and Sequential Function Chart (SFC).
• Knowledge of industrial communication networks and protocols, including EtherCAT, CANBus, PROFIBUS, and OPC UA.
• Experience troubleshooting and optimizing PLC-based automation systems.
• Understanding of industrial automation and SCADA environments.
• Ability to work independently while effectively collaborating within cross-functional teams.
• Strong problem-solving, communication, and customer-focused mindset.
• Fluent English communication skills, both written and spoken.

Nice to Have

• Experience with a variety of PLC platforms and development tools.
• Knowledge of Python or other scripting languages.
• Experience with version control systems such as Git.
• Familiarity with Agile methodologies (Scrum, Kanban).
• Experience with MS SQL databases.
• Direct customer-facing project experience.
• Polish language skills.

We Offer:

• Competitive Compensation. Enjoy a fair and transparent salary structure and an annual bonus. We will share all the details with you before the first interview.
• Flexibility & Work-Life Balance. Benefit from a hybrid work setup (minimum 8 days per month in the office).
• Professional Growth & Development. Take your career to the next level with our Internal Training Center and online Language Courses in the office.
• Inclusive & Supportive Culture. Join a team that values diversity, collaboration, and open communication. We foster an environment where your ideas matter.
• Health & Well-being. We care about your health! Access private health insurance, life insurance, Multisport Card contribution, wellness programs, mental health support, and weekly yoga sessions.
• Extra Perks & Benefits. Enjoy a yearly vacation allowance, Christmas shopping cards, team-building activities, and annual company events.
• Workspace & Tools. Work in a brand-new office equipped with everything you need: ergonomic workstations, modern tools, a Chillout Room with board games, and space to relax.
• Recognition & Rewards. Your efforts won’t go unnoticed. We offer an anniversary bonus and an outstanding referral program bonus.

Globally, our policy is to recruit individuals from wide and diverse backgrounds. However, certain positions require access to controlled goods and technologies subject to various export control regulations. Applicants for these positions may be limited (by, for example, their countries of citizenship, country of origin, or immigration status) where required by law or governmental contact, and/or employment made contingent upon the issuance of appropriate governmental licensing.

MKS Inc. and its affiliates and subsidiaries ("MKS") is an affirmative action and equal opportunity employer: diverse candidates are encouraged to apply. We win as a team and are committed to recruiting and hiring qualified applicants regardless of race, color, national origin, sex (including pregnancy and pregnancy-related conditions), religion, age, ancestry, physical or mental disability or handicap, marital status, membership in the uniformed services, veteran status, sexual orientation, gender identity or expression, genetic information, or any other category protected by applicable law. Hiring decisions are based on merit, qualifications and business needs. We conduct background checks and drug screens, in accordance with applicable law and company policies. MKS is generally only hiring candidates who reside in states where we are registered to do business.

MKS is committed to working with and providing reasonable accommodations to qualified individuals with disabilities. If you need a reasonable accommodation during the application or interview process due to a disability, please contact us at [e-mail].