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OT Security Engineer

Hybrid in Barcelona·Full-time·Added 1 month ago (last checked 9 Oct)

UST

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Overview

Payments: 12 or 14 salary payments a year
Work mode: Hybrid, Barcelona
Contract: Full-time
Experience: 4+ years
Benefits: Flexible pay plan, gym access

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The ad doesn’t mention sponsorship
No sponsorship mentioned, and this kind of work is rarely sponsored in Spain.

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Skills

Nice to have

Payments

Requirements

What we're looking for

What do we expect from you?
Minimum 4+ years of experience in OT security, OT infrastructure, or related cybersecurity roles.
Strong understanding of ICS, SCADA architectures, and network segmentation in industrial environments.
Hands-on experience with TVM tools, frameworks, and processes.
Familiarity with Microsoft Defender, SIEM platforms, and endpoint protection solutions in OT contexts.
Good knowledge of industrial protocols such as Modbus, DNP3, OPC, and similar.
Experience configuring and working with firewalls, IDS/IPS, and network monitoring tools.
Ability to analyze CVEs, assess their impact on OT systems, and coordinate remediation with engineering teams.
Strong communication, documentation, and stakeholder management skills.

Nozomi (must).

Pay & benefits

What you'll get

What can we offer?
23 days of Annual Leave plus the 24th and 31st of December as discretionary days!
Numerous benefits (Health Care Plan, teleworking compensation, Life and Accident Insurances).
`Retribución Flexible´ Program: (Meals, Kinder Garden, Transport, online English lessons, Health Care Plan...)
Free access to several training platforms
Professional stability and career plans
UST also, compensates referrals from which you could benefit when you refer professionals.
The option to pick between 12 or 14 payments along the year.
Real Work Life Balance measures (flexibility, WFH or remote work policy, compacted hours during summertime...)
UST Club Platform discounts and gym Access discounts

The role

We are looking for the very Top Talent...and we would be delighted if you were to join our team!

What we look for?
We are looking for an experienced OT Security Engineer with a strong background in OT infrastructure and cybersecurity to support Threat and Vulnerability Management (TVM) across Operational Technology environments. The ideal candidate is hands-on, technically strong in ICS/SCADA security, and comfortable working across IT and OT teams to reduce cyber risk in industrial environments.

What you'll do

Main tasks and accountabilities will be:
Support Threat and Vulnerability Management (TVM) activities in OT environments, including vulnerability scanning, assessment, prioritization, and remediation tracking.
Work closely with infrastructure and engineering teams to ensure secure configuration, patching, and hardening of OT assets.
Analyze and respond to security s and incidents impacting OT systems.
Implement, maintain, and monitor security controls for ICS/SCADA systems, PLCs, and other industrial devices.
Develop and maintain OT asset inventories and associated risk profiles.
Ensure alignment between IT and OT security strategies by collaborating with cross-functional teams.
Assist in the deployment, configuration, and tuning of security tools, such as Microsoft Defender for IoT, Nessus, and Qualys.
Document and report on vulnerabilities, remediation progress, and overall risk posture to key stakeholders.
Stay current with emerging OT threats, vulnerabilities, and mitigation techniques to continuously improve security posture.

How you'll work

Work Location
Hybrid position in Madrid or Barcelona (3 days at client´s office)

Work Schedule
Business hours (40 hours weekly with 1 hour for lunch).

Hiring process

3 steps3 interviews1–2 weeks in all

Learning about who you are
With recruitment team
Conversation about your background and experience; for some roles, a sense of your technical proficiency.
Understanding what makes you tick
What motivates you, your working style and personality, and whether you would thrive in UST and client team dynamics.
Final interview
With future peers, sometimes leadership or the client
Informal chat with your future peers about team fit; depending on the role, members of the leadership team or the client may join.

UST replies within 24 hours of the final interview.
Timing depends on everyone's availability.

About UST

UST is a global digital transformation and IT services company headquartered in Aliso Viejo, California, USA. With over 30,000 employees worldwide, UST partners with major corporations across industries such as banking, healthcare, retail, and manufacturing to deliver technology solutions, including cloud, data analytics, and application development. The company has a strong global footprint with delivery centers across North America, Europe, Asia, and Latin America.

In Spain, UST has a significant presence in Málaga, where it operates a technology and innovation hub. The Málaga office is a key delivery center for European clients, offering roles in software engineering, data, and digital services. UST is known for its collaborative culture and investment in employee development, making it an attractive option for international professionals seeking to work in Spain's growing tech ecosystem.

Industry: Technology
Founded: 1999
Employees: 30,000
Headquarters: Alameda, USA
In Spain: Málaga
Website: ust.com

Good to know if you are moving

UST's Málaga office is part of a growing tech hub in southern Spain, offering a Mediterranean lifestyle with lower cost of living compared to Madrid or Barcelona.
The company provides visa and relocation support for international hires, as part of its global mobility programs.
UST emphasizes continuous learning and offers certifications and training in cloud, data, and engineering.
Málaga has a growing international community and is well-connected by air to major European cities, making it easy for expats to travel.
UST has a diverse workforce with employees from many nationalities, and English is commonly used in the Málaga office.

In their own words

About the company & team

More in details, UST is a multinational company based in North America, certified as a Top Employer and Great Place to Work company with over 35.000 employees all over the world and presence in more than 35 countries. We are leaders on digital technology services, and we provide large-scale technologic solutions to big companies.

Additional information

If you would like to know more, don't hesitate to apply and we'll get in touch to fill you in detail. We are waiting for you!
In UST we are committed to equal opportunities in our selection processes and do not discriminate based on race, gender, disability, age, religion, sexual orientation or nationality. We have a special commitment to Disability & Inclusion, so we are interested in hiring people with disability certificate.

All open roles at UST