Name the problem.Consider it handled.



About me
I'm Mark Nestor Arenillo.
I'm a software engineer and Cum Laude Computer Science graduate from the University of the Philippines Los Baños, based in Pasig City, Philippines.
I build things that solve real problems.
I don't build software just to make it work. I build it to make a difference for the people using it.
I understand the problem, challenge the obvious solution, and obsess over the details until it feels right.
Works
Redefining fitness, starting with your Dream Physique.


From the city
to the coast.
A little preparation makes room for the good part. Here’s how the journey comes together.
What I can build
Anything under the sun, really.
Where I've worked
Experience
Software Engineer
Jun 2025 — PresentEROAD
- Build and maintain Dispatch Management integrations, keeping job flow reliable between third-party systems, EROAD 360, and Drive for enterprise construction customers.
- Led the migration of ServiceBusToSNS from legacy Azure Functions to containerized workers on AKS, with end-to-end CI/CD via GitHub Actions.
- Manage cloud infrastructure with Terraform and Kubernetes, including Service Bus resources, secrets, and decommissioning legacy VMs/Function Apps.
Software Developer
May 2024 — Jun 2025Tyler Technologies
- Contributed to cloud migration efforts, converting a Windows app-based ERP Pro system to a cloud-based .NET solution.
- Identified bottlenecks and optimized existing code, fixing technical debt for performance and scalability.
- Facilitated and led code reviews and knowledge-sharing sessions across the team.
Software Engineer
Sep 2022 — May 2024Nimbyx
- Designed, developed, and tested web and mobile applications, software robots, and integration services.
- Product-engineered web applications such as ALINA and Evident, collaborating with product owners as the business model evolved.
- Drove continuous learning within the team and communicated project deliverables to stakeholders.
Machine Learning Engineer
Mar 2022 — Sep 2022Nimbyx
- Trained machine learning models that automate the generation of dental restoration CAD designs.
- Developed a CNN-based solution paired with the Meshmixer API to speed up manual dental crown design.
Toolbox
Skills
Languages & Frameworks
Cloud & DevOps
Data & ML
Bachelor's Degree in Computer Science
University of the Philippines Los Baños · Cum Laude · 2018 – 2022
Let's work together
Start a project
now.
Tell me what you're trying to build. I'll make it my problem to solve.
Pasig City, Philippines · reachable via WhatsApp, Viber, or text
