OTIS Engineering Consultancy provides specialist services in Operational Technology (OT), Control & Instrumentation (C&I), industrial automation, and cyber security for energy and critical infrastructure.
With over 22 years of engineering experience, OTIS supports asset owners, utilities, developers, and EPC contractors in delivering reliable, secure, and standards-compliant control systems across the full project lifecycle—from concept and FEED through EPC delivery, commissioning, and operation.
We provide infrastructure-focused engineering expertise across complex and safety-critical environments.
Proven infrastructure expertise across energy and critical infrastructure projects
Strong commercial awareness, with a clear understanding of project risk, milestones, budgets and full asset lifecycles
Industrial cyber security embedded by design, aligned to recognised standards
Experience across new-build projects, retrofit upgrades and live operational sites
Fully insured professional consultancy, providing assurance and accountability
We combine hands-on site experience with strategic engineering oversight — delivering solutions that are technically robust, commercially sound and operationally resilient.
Why Chose Us
We deliver specialist engineering consultancy across Operational Technology, Control Systems and Industrial Cyber Security for heavy industry and critical infrastructure.
OT & Control Systems
Architecture, design and assurance of SCADA, DCS, PLC and substation control systems — including secure OT networks, brownfield migrations and lifecycle upgrades.
Industrial Cyber Security
IEC 62443-aligned assessments, OT risk management, secure architecture design and legacy system hardening.
Project & Technical Assurance
Owner’s Engineer support, technical authority services, installation and commissioning assurance across the full project lifecycle.
What We Do
Energy and Critical Infrastructure Coverage
We deliver C&I and Operational Technology engineering services across industries where complex control systems are critical to safe and reliable operations in the following industries.
Energy & Utilities
Power Generation (Onshore Wind, Offshore Wind, Energy from Waste, Diesel Plants, Tidal Turbines, Hydrogen, Carbon Capture)
Transmission & Distribution
Oil & Gas
Water & Wastewater Treatment
Manufacturing
Food & Beverage
Pharmaceuticals
Transportation & Logistics
Rail Systems
Airports
Maritime Ports
Traffic Control Systems
Chemicals & Petrochemicals
Refineries
Processing Plants
Other Industrial Sectors
Metals Operations
Waste Management
Traffic Control Centres
Detailed Services Provision
Concept → Design → Tender → EPC → Commissioning → Operations
At OTIS, we support every stage of an industrial project — from the earliest ideas on paper to long‑term operational excellence. Our approach blends deep technical expertise with practical, real‑world experience across energy, utilities, and complex industrial environments:
Feasibility & Concept Development
We help shape the foundations of your project with clear, strategic thinking by:
Defining operational needs and project direction
Establishing OT, C&I, maintenance, and reliability strategies
Developing high‑level control philosophies and system concepts
Creating secure‑by‑design cybersecurity approaches
Building early system architectures, network concepts, and control room layouts
Producing conceptual budgets, execution plans, and design reports
Providing independent technical authority and document reviews
Concept Design & Tender Engineering
We translate ideas into structured, tender‑ready engineering packages by producing:
Employer Requirements for DCS, SCADA, instrumentation, telecoms, and non‑control OT
Instrument lists, datasheets, hook‑ups, and supporting documentation
Architecture concepts, I/O estimates, and functional descriptions
Cable diagrams, schedules, and termination details
C&I inputs to plant layouts, PFDs, P&IDs, SDLs, and protection diagrams
Hazard studies, SIL/LOPA assessments, and cause‑and‑effect development
Interface matrices and packaged system requirements
Detailed risk registers and maintenance/reliability requirements
Ongoing technical authority support
Contracting & Vendor Engagement
We support you through procurement with clarity and confidence by providing clarity on:
Approved vendor lists for control systems and field devices
Technical evaluation of tenders and supplier proposals
Negotiation support and contract preparation
Independent technical oversight throughout the process
FEED (Front‑End Engineering Design)
We ensure your FEED package is robust, aligned, and ready for execution by undertaking:
Full review of FEED deliverables
Preparation of FEED‑level documents across all OT and C&I disciplines
EPC Delivery Support
We stay with you through execution, ensuring quality, compliance, and readiness by
Participating in design reviews and technical workshops
FAT and SAT involvement (systems and cybersecurity)
Review of detailed design drawings and documentation
Installation monitoring and supervision
Commissioning criteria, cold/hot commissioning support
Punchlist management and handover documentation
System training and O&M manual development
Continuous technical authority support
Operations & Maintenance
We help you run your assets safely, securely, and efficiently by generating:
Asset registers and technical summaries
Standard operating and maintenance procedures
OT maintenance frameworks and cybersecurity plans
Compliance audits and regulatory reporting
Reliability assessments and improvement strategies
Ongoing technical authority and advisory support
Risk and Assurance
OTIS services are provided to mitigate technical, programme and compliance risk across industrial projects.
Because control systems often sit on the critical path, failures or delays can directly impact construction, commissioning and operational readiness.
Our approach ensures engineering integrity, regulatory alignment and secure-by-design implementation — safeguarding delivery from concept through to operations
Standards Driven OT Engineering and HSE Regulatory Compliance
At OTIS, our services are built on a foundation of internationally recognised standards, ensuring technical integrity, regulatory compliance, and operational resilience across all engagements. We align with—but are not limited to—the following standards:
IEC 62443 Industrial Cyber Security
IEC 61508 Functional Safety
IEC 61850 Power Utility Automation
IEC 61131 PLC Programming Standards
IEC 61499 DCS Systems
BS 6739 Instrumentation in Process Control Systems
ISA 152 Alarm Management
ISA 101 HMI Design
ISO 11064 Control Room Design
Our team are also familiar with UK HSE obligations on operators with regards to OT systems.
Cyber Security Engineering Capability
At OTIS, we bring deep expertise in implementing and aligning with both the NIST Cybersecurity Framework (CSF) and the UK Cyber Assessment Framework (CAF). These internationally recognized standards guide our approach to securing operational technology environments across critical infrastructure sectors.
NIST CSF: We apply its core principles—Identify, Protect, Detect, Respond, and Recover—to build resilient systems tailored to industrial operations.
UK CAF: Our experience spans all four objectives of the framework, ensuring governance, risk management, protective security, and incident response are robustly addressed.
Whether supporting energy networks, transport systems, or industrial control environments, our cybersecurity strategies are structured, measurable, and regulator-ready
OT OEM & Vendor Technology Expertise
We are experienced with all major OT OEM vendor solutions and their associated toolsets, including:
Siemens S7 Technology
Endress+Hauser
Rosemount
Cisco
Schneider Electric
ABB
Rockwell / Allen‑Bradley
Yokogawa
Our hands‑on experience spans configuration, integration, troubleshooting, and full lifecycle support across these platforms, ensuring reliable, secure, and seamless operation within complex industrial environments.
Clients
We’re proud to support leading energy providers, utilities, and infrastructure firms across the globe over the last 22 years. Our consultancy delivers trusted OT engineering solutions to core clients
We’ve worked with major players in renewables, utilities, and industrial operations:
EON
Scottish Power
EDF
ENERGOS
DEWA
SSE Renewables
Hammerfest Strom
Mott MacDonald
Empower
VRA (Volta River Authority)
VINCI
Weir Pumps
First Engineering
Network Rail
