PLC developer

MKS Instruments, Inc.; Poznań; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Hybrid work setup

Private health insurance

Annual bonus potential

Wellness programs

Job summary

MKS Instruments, Inc. is seeking a Senior Software Engineer (PLC Developer) to design, develop, and maintain PLC control logic for advanced automation. You will collaborate with engineering and commissioning teams to ensure seamless integration and high reliability.

The role reports to the Lead of VCS Automation. The ideal candidate has 5+ years in PLC-based automation and strong JScript/IEC 61131-3 experience, plus hands-on familiarity with EtherCAT, CANBus, PROFIBUS, and OPC UA.

Qualifications

• Bachelor’s or Master’s degree in Automation Engineering, Electrical Engineering, Computer Science, or related field.
• 5+ years of experience developing software for PLC-based automation systems.
• Strong experience with JScript and IEC 61131-3 languages.

Responsibilities

• Developing and maintaining PLC control logic to support automation projects.
• Designing automation solutions meeting customer requirements for reliability and safety.
• Integrating PLC systems with industrial networks and applications.
• Testing, troubleshooting, and optimizing automation systems for efficient operation.
• Collaborating with cross-functional teams to deliver customer projects.
• Providing technical support and resolving automation issues promptly.
• Promoting code quality through documentation and reviews.
• Mentoring junior engineers and promoting continuous learning.
• Maintaining safety standards in line with company policies.

Skills

PLC programming

JScript

IEC 61131-3

Structured Text

SFC

EtherCAT

CANBus

PROFIBUS

OPC UA

Python

Git

Agile (Scrum/Kanban)

MS SQL

English

Polish

Education

Bachelor’s or Master’s in Automation/Electrical/CS

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].

At MKS, it’s all about courage, big ideas, and a serious passion for innovation. Winning here is about exploring possibilities, taking action, and solving our customers’ toughest challenges. It’s not just a job – it’s what you make of it. While you shape your role and make it unique, we invest in you with on‑the‑job and formal training, as well as educational assistance. Curiosity is key at MKS - ask questions, own your path. Our success comes from celebrating the unique skills, diverse perspectives, and lived experience of employees from over 100 countries. The goal is to make sure that everyone feels that they belong. Diversity isn’t just a nice‑to‑have; making sure everyone feels included is a big deal for us. Our group of ~10,000 employees serves semiconductor manufacturing, electronics and packaging, and specialty industrial markets. With over 3,800 patents, our products are enabling advancements in 5G, renewable energy & storage, artificial intelligence, cloud technology, and big data. We’re the behind‑the‑scenes support for some amazing technology. MKS Instruments enables technologies that transform our world. MKS Instruments Product Overview