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Senior MES Developer

HCLTech -
Chennai, Tamil Nadu

Apply Now

Job details

1 day ago

Qualifications

Cisco ISE
Computer science
Management
CCNP
Kubernetes
CCNA
R
CISSP
Firewall
Programmable logic controllers
Bachelor's degree
NIST standards
Scripting
APIs
Manufacturing
Python
PowerShell
Active Directory

Full job description

Senior MES Developer

Chennai, Tamil Nadu

Job Summary

We are seeking an OT Segmentation Engineer with hands-on experience in Elisity zero-trust segmentation to design, implement, and manage secure micro-segmentation across industrial (OT) networks .

The role focuses on securing plant floor assets (PLCs, SCADA, MES, IIoT devices) by enforcing identity-based access control and network segmentation aligned with IEC 62443 / Zero Trust principles .

Key Responsibilities

OT Network Segmentation (Core Responsibility)

Design and implement zero-trust segmentation policies using Elisity
Configure Elisity identity-based segmentation (policy enforcement via Edge Nodes / Policy Engine)
Define zone & conduit architecture aligned with ISA/IEC 62443

Industrial Network Integration

Work with OT assets :
- PLCs (Siemens, Rockwell, B&R)
- SCADA systems (Ignition, WinCC, FactoryTalk)
- MES (Tulip, eMaint, etc.)
Integrate Elisity with:
- Active Directory / Identity providers
- Asset inventory / discovery tools

Asset Discovery & Classification

Identify and classify:
- OT devices (PLCs, HMIs, Robots)
- IT-OT boundary systems (historians, MES)
Map communication flows:
- SCADA
- MES
- ERP

Policy Design & Implementation

Create granular access control policies based on:
- Identity
- Device type
- Application
Implement:
- Least privilege access
- East-West traffic control

Security & Compliance

Align segmentation design with:
- IEC 62443
- NIST Cybersecurity Framework
Support:
- Vulnerability mitigation
- Incident response (containment using segmentation)

Monitoring & Troubleshooting

Monitor segmentation policies and traffic flows
Troubleshoot:
- Communication blocks between OT systems
- Network latency or performance issues
Optimize policies for high availability of critical plant systems

Documentation & Reporting

Prepare:
- Network segmentation diagrams
- Policy documentation
- Security assessment reports

Support audits and compliance reviews

Skill Requirements

Technical Skills

OT protocols:
- OPC UA, Modbus, Profinet, EtherNet/IP
Networking:
- VLANs, routing, firewalls, DMZ
Security:
- Zero Trust Architecture
- Micro-segmentation concepts

Elisity / OT Security Tools

Hands-on with:
- Elisity platform (Policy Engine, Enforcement Points)
Exposure to:
- Cisco ISE / NAC (nice to have)
- Firewall segmentation (Palo Alto / Fortinet)

Industrial Systems Knowledge

PLC programming basics
SCADA architecture
MES / shop-floor integration

Scripting / Automation (Preferred)

Python / PowerShell
API-based automation for policy management

Experience

2–4 years in:
- OT network / industrial automation / cybersecurity
- OT segmentation / zero-trust / ICS security

Education

Bachelor’s in:
- Electrical / Instrumentation / Computer Science / IT
Certifications (preferred):
- IEC 62443
- CCNA / CCNP
- CISSP / GICSP

Soft Skills

Strong collaboration with:
- OT engineers
- IT security teams
- Plant operations
Ability to translate:
- OT requirements security architecture

Other Requirements

Experience with:
- Digital Manufacturing / MES integration (Tulip, Ignition)
- Edge platforms (Kubernetes / OpenShift in OT)
- Industrial cybersecurity frameworks implementation

Role Relevance (Your Context)

This role strongly aligns with your work on:

IT/OT integration
MES + SCADA architecture
network segmentation & IEC 62443
industrial digitalization projects

Apply Now

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