Software (OT) Operational Technology Developer

Merck Life Science; Bengaluru; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

Merck Life Science in Bengaluru, Karnataka, seeks a senior automation engineer with 7+ years of hands-on experience in Industrial Control Systems and OT technologies. You will lead PLC programming, SCADA/HMI development, and integration with DCS and MES components in R&D or production labs, driving commissioning and troubleshooting efforts.

Expertise in Siemens TIA Portal, WinCC, and modern OT protocols, plus strong scripting or API capabilities, will be highly valued.

Qualifications

• 7+ years of hands-on experience developing Industrial Control Systems and OT technologies in production or R&D environments.
• Proven track record in PLC programming and SCADA/HMI development within R&D or laboratory automation contexts. Commissioning and troubleshooting experience.

Skills

Structured programming

OOP principles

Siemens TIA Portal

CODESYS

Rockwell Studio

SCADA/HMI platforms

Siemens WinCC

FactoryTalk View

Ignition

iFix

OPC DA/UA

MODBUS

Ethernet/IP

Profinet

DCS (Delta-V)

MS SQL Server

.NET framework

UI design

P&ID

Electrical schematics

Control logic specifications

Education

Bachelor's degree in Engineering, Instrumentation & Control, Electronics, Electrical, Automation, or related technical field

Tools

Siemens WinCC

Docker

Prometheus

RabbitMQ

Java

Terraform

Ansible

Job description

Work Your Magic with us!

Ready to explore, break barriers, and discover more? We know you’ve got big plans – so do we! Our colleagues across the globe love innovating with science and technology to enrich people’s lives with our solutions in Healthcare, Life Science, and Electronics. Together, we dream big and are passionate about caring for our rich mix of people, customers, patients, and planet. That's why we are always looking for curious minds that see themselves imagining the unimaginable with us.

Your Role

Technical Skills

• Expert proficiency in structured programming (STL/FBD/Ladder) and object-oriented programming principles
• Advanced expertise with at least one industrial PLC development platform: Siemens TIA Portal, CODESYS, or Rockwell Studio
• Strong experience with SCADA/HMI platforms: Siemens WinCC, FactoryTalk View, Ignition, or iFix
• Hands‑on knowledge of industrial communication protocols: OPC DA/UA, MODBUS, Ethernet/IP, and Profinet
• Practical experience with Distributed Control Systems (DCS) solutions such as Delta-V or Siemens PCS
• Working knowledge of MS SQL Server and .NET framework
• Demonstrated ability to design intuitive user interfaces and create rapid prototypes
• Strong understanding of electrical drawings, P&ID (Piping & Instrumentation Diagrams), and I/O lists for system design and integration
• Ability to interpret and work with engineering documentation including electrical schematics, instrumentation diagrams, and control logic specifications

Who You Are

Education

• Bachelor's degree in Engineering, Instrumentation & Control, Electronics, Electrical ,Automation, or a related technical field

Experience

• 7+ years of hands-on experience developing Industrial Control Systems and OT technologies in production or R&D environments
• Proven track record in PLC programming and SCADA/HMI development specifically within R&D or laboratory automation contexts. Demonstrated expertise in commissioning and troubleshooting physical automation systems

Having

• Strong hands-on experience with Siemens TIA Portal and Siemens WinCC
• Practical experience implementing Module Type Package (MTP) standards. Experience developing RESTful APIs and WebSocket solutions for industrial applications
• Familiarity with automated testing frameworks and version control systems (GitHub). Knowledge of Infrastructure as Code tools: Terraform or Ansible. Experience with CI/CD pipelines optimized for industrial automation systems
• Hands-on experience with virtualization technologies: Docker and containerization. Experience with enterprise monitoring and logging tools such as Prometheus
• Familiarity with RabbitMQ, Java, or other modern backend technologies. Knowledge of ISA-88, ISA-95, or ISA-99 standards. Understanding of GAMP 5, FDA guidelines, and regulated software development lifecycle practices
• Proven experience working in Agile methodologies and Nexus framework environments. Exposure to AI/ML solutions and ability to incorporate them into SDLC workflows

What we offer:

We are curious minds that come from a broad range of backgrounds, perspectives, and life experiences. We believe that this variety drives excellence and innovation, strengthening our ability to lead in science and technology. We are committed to creating access and opportunities for all to develop and grow at your own pace. Join us in building a culture of inclusion and belonging that impacts millions and empowers everyone to work their magic and champion human progress!