Romas is available for hire

Romas Petkus

Verified Expert in Engineering

Embedded Software Engineer and Developer

Kaunas, Kaunas County, Lithuania

Toptal member since July 28, 2026

Expertise

Software Development C++C UDP RTOS Git UML Docker iOS Swift Linux Qt Development C#Android

Bio

Romas is a senior embedded software engineer with 9 years of experience building connected products for clients, including Inovatyvi Medicina (Sentante) and Voltas IT (OBDeleven). His primary expertise is in firmware, iOS development, and BLE for medical devices and consumer IoT, where he thrives in end-to-end product ownership. Romas architected and shipped the firmware for a CE-marked medical device now used in hospitals while at Inovatyvi Medicina.

Portfolio

Sentante

IEC 62304, CI/CD Pipelines, Git, C++, Qt, VPN, Networking, C, UDP, STM32...

OBDeleven

iOS, Swift, C, STM32, Bluetooth Low Energy (BLE), Embedded C...

Singleton Labs

Android, iOS, Swift, C, Nordic nRF52, Embedded C, Firmware Development

Experience

C++ - 9 years
C - 9 years
Embedded Systems - 7 years
STM32 - 7 years
Docker - 7 years
Swift - 5 years
IEC 62304 - 4 years
LVGL - 4 years

Preferred Environment

Linux, Docker, CI/CD Pipelines, Git, MacOS, C++, C, IEC 62304, Swift, iOS

The most amazing...

...firmware I've architected is for a CE-marked medical device now used in hospitals in Lithuania—and in the future, all of Europe and the US.

Work Experience

Embedded Software Engineer

2022 - 2026

Sentante

Architected and developed from scratch the firmware for a remote indeflator device for angioplasty and stent placement, written to MISRA C++23 and documented in accordance with IEC 62304. The device received its CE mark and is used in hospitals.
Developed firmware for an endovascular surgical robot focused on real-time, safety-critical motion control.
Led a small team of junior engineers and owned CI/CD pipelines, Git workflow, code review culture, and coding standards across the firmware codebase.
Built C++/Qt desktop applications supporting the devices.
Designed the network architecture for the robot and architected and enabled remote robot operations over a custom VPN network.

Technologies: IEC 62304, CI/CD Pipelines, Git, C++, Qt, VPN, Networking, C, UDP, STM32, Embedded C, Embedded C++, Firmware Development

Embedded Software Engineer | iOS Developer

2019 - 2022

OBDeleven

Contributed as one of the first engineers on the OBDeleven iOS app, building the app used by drivers worldwide for vehicle diagnostics, coding, and customization.
Transitioned to embedded in September 2020 while continuing iOS work and developed firmware for the OBDeleven OBD-II dongle, a BLE gateway between the mobile app and the car’s control units.
Worked across the full product chain, including firmware, BLE communication, and the iOS app consuming it.

Technologies: iOS, Swift, C, STM32, Bluetooth Low Energy (BLE), Embedded C, Firmware Development

Software Developer

2017 - 2019

Singleton Labs

Started in Android development, transitioned to iOS (Swift), then to firmware, and developed Nordic nRF firmware in C for a BLE-controlled lock for a smart post box.
Developed Brun og Blid smart sunbed salon iOS Swift app.
Wrote firmware for a smart sunscreen vending machine.

Technologies: Android, iOS, Swift, C, Nordic nRF52, Embedded C, Firmware Development

Experience

Inflante Remote Indeflator

https://sentante.com/news/sentante-introduces-digital-indeflator-inflante/

Architected and developed from scratch the firmware for a remote indeflator device for angioplasty and stent placement, written to MISRA C++:2023 and documented in accordance with IEC 62304. The device received its CE mark and is used in hospitals today.

Sentante Endovascular Robot

http://www.sentante.com

Developed firmware for an endovascular surgical robot (real-time, safety-critical motion control) as part of an 8-person electronics/embedded engineering team. I led the team's software development practices, documentation, and CI/CD, which contributed to the device later receiving CE marking. I also architected the network layout and topology and built a custom VPN solution that enabled remote transatlantic surgeries.

OBDeleven iOS app

https://obdeleven.com

Was one of the first engineers on the OBDeleven iOS app. I built both the OBDeleven VAG and OBDeleven apps from scratch. It is used by drivers worldwide for vehicle diagnostics, coding, and customization. I wrote this in native Swift.

OBDeleven Device Firmware

https://obdeleven.com

Developed firmware for the OBDeleven OBD-II dongle—a BLE gateway between the mobile app and the car’s control units. I used older generation device firmware as a baseline but mainly developed the firmware as a one person team.

Education

2016 - 2020

Bachelor's Degree in Software Engineering

Kaunas University of Technology - Kaunas, Lithuania

Skills

Libraries/APIs

LVGL

Tools

Git, VPN, WireGuard

Languages

C++, C, Embedded C, Embedded C++, Swift, UML, C#

Platforms

STM32, iOS, Linux, Docker, Android, MacOS

Frameworks

Paradigms

Continuous Integration (CI)

Other

Software, Embedded Systems, Firmware Development, Real-time Operating System (RTOS), Networking, UDP, Bluetooth Low Energy (BLE), ESP32, IEC 62304, CI/CD Pipelines, Nordic nRF52, TCP/IP

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