Orestes is available for hire

Orestes Mersinias

Verified Expert in Engineering

Device Drivers Developer

London, United Kingdom

Toptal member since March 9, 2022

Expertise

Embedded Software Engineering Embedded Systems Engineering Firmware RTOS Node.js JavaScript C++C Linux React.js CSS TypeScript Python

Bio

Orestes is a senior software engineer with a strong background in embedded systems, multi-threading, bare metal, RTOS, real-time systems, and communication protocols. He has worked in various industries, notably augmented reality, robotics, automation, satellite, and IoT.

Portfolio

Hanwha-Phasor

C, Embedded C, Embedded Software, Embedded Systems, Internet of Things (IoT)...

XYZ Reality

C++, Embedded C++, Embedded C, Embedded Software, Embedded Systems...

Experience

Embedded C++ - 9 years
C++ - 9 years
Embedded C - 9 years
Real-time Operating System (RTOS) - 8 years
STM32 - 8 years
ARM Embedded - 8 years
Device Drivers - 8 years
C - 8 years

Availability

Part-time

Preferred Environment

C++, C, Embedded Software, Embedded Systems, Internet of Things (IoT), Firmware, Embedded Hardware, Node.js, React, JavaScript, APIs

The most amazing...

...project I've worked on is an augmented reality construction helmet with sub-millimeter accurate spatial tracking.

Work Experience

Senior Software Engineer

2020 - 2021

Hanwha-Phasor

Developed the firmware for a phased array bi-directional satellite antenna.
Processed inputs to produce a real-time steering vector to aid in satellite tracking.
Developed a robust platform-agnostic object-oriented hardware abstraction layer, which allowed the simulation and testing of drivers and peripherals.
Added the ability to monitor and control key system parameters from a lightweight web server and REST APIs.
Created a mechanism and protocol to update peripheral MCU configuration from a central point.

Technologies: C, Embedded C, Embedded Software, Embedded Systems, Internet of Things (IoT), Firmware, Embedded Hardware, Technical Product Management

Embedded Engineer

2019 - 2020

XYZ Reality

Designed and developed the firmware architecture for a family of devices in the AR sector. Developed high-quality code, consistently exceeding expectations and delivering ahead of deadlines.
Implemented drivers for communicating with peripherals over SPIP, I2C, and a Universal Asynchronous Receiver/Transmitter (UART). Created custom protocols for communications between devices with speed, redundancy, and CPU optimization in mind.
Implemented a universal protocol-agnostic AES-128 encrypted bootloader with dual firmware redundancy for either a computer to device or device to device software update.

Technologies: C++, Embedded C++, Embedded C, Embedded Software, Embedded Systems, Internet of Things (IoT), Firmware, Embedded Hardware, Technical Product Management

Experience

Holosite

HoloSite is the world's first engineering-grade augmented reality platform. An integrated cloud-based solution plugging into our AR construction headset, "The Atom". I was the sole embedded engineer responsible for bringing the hardware to life.

Skills

Libraries/APIs

Node.js, React

Tools

GNU Debugger (GDB)

Languages

C++, C, Embedded C++, Embedded C, JavaScript, HTML, CSS, TypeScript, Python 3

Platforms

STM32, Linux

Other

Real-time Operating System (RTOS), Wireless Protocols, Device Drivers, ARM Embedded, Embedded Software, Embedded Systems, Internet of Things (IoT), Firmware, Embedded Hardware, APIs, Technical Product Management

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