Facilities management runs on technical precision, operational reliability and data-driven decisions. Denise Sosa, Electrical Lead at OCS Philippines, brings all three to the role.
Her career spans performance engineering, energy analytics and transition projects across multiple sites. Denise’s work shows how engineering fundamentals, applied with discipline and hands-on fieldwork, translate into measurable improvements in safety, energy efficiency and facility performance.
How did your journey in engineering begin, and what does the work actually look like day to day?
Denise’s path into engineering started with a deliberate choice to tackle what challenged her most.
“When I was choosing a course for college, I decided to face what challenged me the most: math and physics, both core to engineering. What started as a spontaneous decision turned into a journey of growth. Looking back, choosing something difficult allowed me to discover capabilities I didn’t know I had.”
That decision launched a career rooted in highly technical work. “I began my career in highly technical roles as a performance engineer and energy analyst, focusing on energy efficiency improvement projects which involve analysing system performance and translating complex data into practical solutions.”
Today, as electrical lead at OCS Philippines, her scope has expanded but the technical core remains. “These days, I primarily focus on preparing for upcoming transition projects, ensuring that all documentation is refined and ready, while maintaining standardised systems, templates, and processes. On-site, I work closely with operations, conducting observations and analyses to identify opportunities for improvement and ensure that all electrical infrastructure remains safe, compliant, reliable, and optimised for both operational performance and lifecycle cost efficiency.”
What role does fieldwork play in sharpening your engineering judgment?
“For the past three years, I’ve made efforts to be on the ground and hands-on. Being on-site excites me. Seeing, hearing, and observing equipment conditions firsthand sharpens my engineering judgment. Meeting people with varying personalities and experiences, getting to know their stories, and learning from them has been my favourite thing to do on site and at work in general.”
Can you share a moment where your work delivered measurable results for a customer?
Denise’s technical expertise has translated into significant, quantifiable outcomes for the facilities she supports.
“Earlier in my career, I led projects that improved system reliability and energy efficiency, contributing to a safer and more dependable facility. These efforts resulted in a reduction of 5,247 MWh in electricity consumption, equivalent to approximately PHP 48 million in savings in the first three years of the contract period. In the broader context, this also translated to a reduction of about 2,660 metric tons of CO₂, comparable to planting over 120,000 trees.”
How does resourcefulness help you solve complex engineering problems on-site?
“Ideal conditions or complete data are not always available. Resourcefulness often means maximising available information, collaborating with experienced technicians, and applying engineering fundamentals to arrive at practical and effective solutions.”
She recalls one investigation that demonstrated this approach in action. “This has been instrumental in my work, particularly during an investigation of reported KPI breaches at a site, where a thorough analysis ultimately identified underlying gaps in accountability and understanding of plant operations rather than an equipment deficiency.”
What are the biggest challenges you face in engineering operations, and how do you overcome them?
“Working in engineering means accepting exposure to operational risks and hazards, which is why safety awareness is always critical. Another challenge is collaboration. Working with different stakeholders, each with their own perspectives. Aligning everyone toward a common goal requires patience, clear communication, and professionalism.”
She also reflects on one of her toughest professional experiences. “One of the most challenging experiences was working with a very difficult client. Initially, it was frustrating. Over time, I realised that the expectations came from a genuine intent to protect the property and the people operating it. By aligning with the same goals, values, and sense of accountability, I was able to build mutual understanding and work effectively with them.”
What has shaped your growth as an engineer, and what skills matter most in technical roles?
“Consistent effort in studying, asking questions, being open to knowledge-sharing, and accepting difficult tasks have all contributed to my growth. I’ve also been fortunate to learn from generous mentors who shared both technical expertise and professional values.”
When asked what skills are essential for anyone in technical roles, “Strong technical foundation, resilience, discipline, and continuous learning. It also requires accountability, critical thinking, and the ability to communicate clearly and professionally.”
She adds that OCS Philippines has played a meaningful role in her development. “OCS Philippines upholds values of Trust, Respect, Unity, and Empowerment, values I’ve experienced firsthand with the team I work with. The organisation also provides opportunities for women to take on challenging tasks, gain field exposure, and collaborate with diverse teams.”
What should people understand about what women in engineering actually do?
“Women are often associated with organisation or aesthetics, but our capabilities go far beyond that. Women can be technically skilled, hands-on, and effective leaders. Given the opportunity, they can excel in all aspects of engineering and operations.”
Denise Sosa
BET Electrical Lead
Her message to young Filipinas considering a career in the field is grounded and empowering. “Confidence is important, but confidence without knowledge and character holds little value. Build yourself through learning, discipline, and patience. Recognise that everyone starts where you are, and that true growth comes with time. Aspire to be one of the engineers who use their expertise to create a safer and better world for everyone.”
How has OCS Philippines supported your growth and development?
“OCS Philippines has played a significant role in my professional growth. It has provided opportunities to develop my technical expertise, leadership skills, and operational experience,” she shares.
More importantly, it has enabled her to lead with confidence.
“It has provided a platform where I can contribute meaningfully, grow professionally, and demonstrate that women can thrive and lead in technical and operational roles.”
What advice would you give to young Filipinas and what should people understand about women in engineering?
“Confidence is important, but confidence without knowledge and character holds little value. Build yourself through learning, discipline, and patience. Recognize that everyone starts where you are, and that true growth comes with time. Aspire to be one of the engineers who use their expertise to create a safer and better world for everyone.”
Behind every reliable facility is an engineer making judgement calls, often with incomplete data, tight timelines and real consequences. Denise Sosa is one of them. Her career shows that capability in engineering is built on fundamentals, sharpened on-site, and proven in the outcomes customers can measure.
