Principal Systems Engineer - OT Security

Fortinet; Bengaluru; On-site; INR 500,000 - 800,000; Full time

Job summary

Fortinet in Bengaluru seeks a Principal Systems Engineer with Operational Technology and Critical Infrastructure experience to enable the Sales and SEngineering teams on OT/CI engagements. The role focuses on validating designs against Reference Architectures and mapping compliance criteria to Fortinet solutions across target clients.

The candidate will drive pre-sales activities, support large OT projects, and provide post‑sales technical guidance while ensuring fortinet product alignment with

Qualifications

• 12+ years in technical/pre-sales as sales or systems engineer.
• 4-5 years hands‑on OT/ICS/SCADA experience (PLCs/RTUs, HMI, Historian).
• Experience with industrial clients in Power, O&G, manufacturing, logistics, or smart buildings.
• Knowledge of IEC 62443, NIST CSF, CIS Top 20, ISO 2700x, NERC-CIP.
• Familiar with industrial protocols (Ethernet/IP, Modbus, DNP3, IEC 104, OPC).
• Strong LAN/WAN, DNS, NFS, SMTP, HTTP, TCP/IP knowledge.
• OT/CI technologies: Routing, Switching, VPN, Network Security, IDS, Anti‑Virus.
• RADIUS, PKI, IKE, Certificates, IPsec, FIREWALL, 802.1Q, SSH, SSL, DES, 3DES.

Responsibilities

• Pre-sales: qualify sales leads from a technical standpoint for OT/CI security solutions.
• Support sales calls; educate customers on features, specs, and Fortinet integrations.
• Review RA and design/test plans to validate field success of deployments.
• Document RAs as technical guides for OT/CI end users.
• Provide technical guidance to Systems Engineers and SMEs in OT/CI.

Skills

Pre-sales

OT/CI concepts

Networking

L1-L7 networking

Education

Bachelor’s Degree

Tools

FortiOS

Fortinet products

Job description

Role Overview

We are looking for Principal Systems Engineers, with Operational Technology & Critical Infrastructure experience, to work within an OT Global team within Fortinet to enable our Sales and Systems Engineering organization to be highly successful within sales calls and systems engineering to Operational Technology and Critical Infrastructure customers and their environments. The Systems Engineer's mission will be to enable the Operational Technology and Critical Infrastructure organization to strongly validate design solutions presented to the Sales and Systems Engineering Organization as a Reference Architecture (RA) to build their business from within these target clients. They will also support the Global compliance, laws, regulations, etc. of these Operational Technology & Critical Infrastructure systems by mapping these criteria’s back to our Fortinet products.

Job Description

We are looking for Principal Systems Engineers, with Operational Technology & Critical Infrastructure experience, to work within an OT Global team within Fortinet to enable our Sales and Systems Engineering organization to be highly successful within sales calls and systems engineering to Operational Technology and Critical Infrastructure customers and their environments. The Systems Engineer's mission will be to enable the Operational Technology and Critical Infrastructure organization to strongly validate design solutions presented to the Sales and Systems Engineering Organization as a Reference Architecture (RA) to build their business from within these target clients. They will also support the Global compliance, laws, regulations, etc. of these Operational Technology & Critical Infrastructure systems by mapping these criteria’s back to our Fortinet products.

Your Key Responsibilities

• Pre-sales - Assist in qualifying sales leads, from a technical standpoint, of Operational Technology and Critical Infrastructure Security Solutions. This could also include the compliance, laws, regulations, etc. that map to our Fortinet products.
• Sales calls - Enabling technical resources on sales calls and answer/educate the customer on issues ranging from features, specifications, and functionality to the integration of Fortinet’s products for Operational Technology and Critical Infrastructure Security Solutions in the Purdue model. This could also include the compliance, laws, regulations, etc. that map to our Fortinet products.
• Conversant with Operational Technology, Information Technology, L1 to L7 networking, applications and solutions.
• Review product Reference Architecture and functional specification, design and execute test plan to ensure field success of a real world deployed solution.
• Technically document Reference Architecture’s as a Technical Guide for end users within Operational Technology and Critical Infrastructure clients to follow when deploying a Solution RA.
• Provide technical guidance to Systems Engineers and SMEs within OT & CI to build future RA’s.
• Modify RA network security design and implementation guidance internally and externally to meet the customer’s requirements.
• Test new features and/or new FortiOS releases to ensure alignment with existing RA’s.
• Input into the development of IC's oriented solutions and services.
• Identify and drive early engagement/alignment on large OT projects.
• Verify FortiGate configurations and implement the best practices per Sector and with documentation.
• Perform interoperability evaluation of devices that interact with Fortinet products.
• Tackle difficult problems and provide solutions for new product developments.
• Post-sales - be the lead technical contact for identified accounts for technical issues and work closely with the technical support team and engineering team to answer, elevate, and resolve customer's technical issues.
• Provide assistance to identify customers with post-sales training.

Requirements

• Minimum 12 years’ experience in technical/pre-sales support as a sales or systems engineer
• 4 - 5 years’ Hands‑on experience, as well as technical operations, of the Operational Technology/Industrial Control Systems/Supervisory Control and Data Acquisition environments (ICS & SCADA systems, PLCs & RTUs, HMI & Historian, Smart sensors & actuators)
• Experience dealing with industrial clients within one or more sub‑industries, such as Power, O&G, Manufacturing, transportation & logistics, or Smart Buildings.
• Knowledge of the key Industrial Security Policies, Standards, and Guidelines (IEC 62443, NIST CSF, CIS Top 20, ISO 27XXX, NERC-CIP)
• Familiarity with the common industrial protocols (EthernetIP, Modbus, DNP3 & IEC 104, OPC etc.)
• Strong understanding of LAN/WAN/Internet services administration
• Strong understanding of DNS and NFS, SMTP, HTTP, TCP/IP
• Knowledge of the following technologies: Routing, Switching, VPN, LAN, WAN, Network Security, Intrusion Detection, and Anti‑Virus used in the Purdue model.
• Strong understanding in the following technologies and protocols: RADIUS, PKI, IKE, Certificates, L2TP, IPSEC, FIREWALL, 802.1Q, MD5, SSH, SSL, SHA1, DES, 3DES
• Experience with encryption and authentication technologies
• Strong presentation skills
• Strong understanding of the common OT and CI protocols
• Familiar with IEC62443, NIST and other OT framework.
• Bachelor’s Degree or equivalent experience.