Senior DevOps / SRE
Engineer
I specialise in
I'm Mario Dantas – a Senior DevOps / SRE engineer with 25+ years delivering reliable, automated, and observable production systems. From CI/CD pipeline engineering and infrastructure design to incident management and toil reduction, I turn complex IT environments into stable, scalable platforms that teams can ship from with confidence.
What I deliver for clients
Clear, outcome-focused services – from prototype to production
Embedded & IoT Prototyping
Custom electronics design, Arduino/ESP32 firmware, sensor integration, and complete functional prototypes ready for testing.
C++ Desktop & Simulation UI
High-performance C++ applications, flight simulator instrument panels, OpenGL/ImGui interfaces, and real-time data visualisation.
DevOps & Full-Stack Development
CI/CD pipelines (GitLab/Jenkins), monitoring stacks (Dynatrace/ELK/Grafana), PHP/Python backends, and database administration.
Featured projects
From concept to working system – real engineering stories
Ethanol fuel measurement device
Challenge: Build a precision fuel analyser from scratch.
Solution: Designed mechanics, custom PCB, Arduino C++ firmware, and a data logging interface.
Result: A fully functional prototype with ±0.5% accuracy.
C++ Flight Simulator UI & Instruments
Challenge: Realistic, low-latency cockpit displays.
Solution: C++ with OpenGL, custom GDI+ instruments, and simulator data bus integration.
Result: Smooth 60 FPS instruments used by a flight simulation community.
FYT Factory – Custom Firmware for Car Head Units
Challenge: Optimize Android head units with bloated firmware.
Solution: MD-EDITION custom kernel with GPU/memory optimizations and FMC management app.
Result: Trusted by thousands of users globally; featured on XDA Forums.
"Mario's ability to jump from electronics to high-level C++ is rare. He delivered a working prototype ahead of schedule."
— J. Costa, Hardware Startup Founder (past client)
Looking for a hands-on engineer?
Available for freelance contracts, prototype development, or technical consulting.
Let's talk about your project →