The engineer behind HAVE3TECH

Yevhen-Serhii Roman

Senior Mobile Engineer & Mobile Team Lead

I’m Yevhen-Serhii Roman, a Senior Mobile Engineer and Mobile Team Lead with 9+ years of experience building Android, iOS, and Flutter applications across fintech, IoT, and healthcare.

Build with us LinkedIn

International experience.
Hands-on engineering.

My experience includes CopeCart, LaMetric, and SoftServe, alongside founding and leading hardware and marketing software ventures. I’ve worked across product launches, mobile architecture, connected devices, delivery workflows, and engineering leadership.

At CopeCart, I led Android and iOS development and launched four applications from scratch, reaching more than 200,000 downloads. My work also included architecture, CI/CD, technical presentations, and collaboration across product, design, and QA.

Through HAVE3TECH, I focus on building our own software and hardware products. I also bring that product-building approach to custom development for other teams.

Professional experience

Roles across international product and engineering companies.

CopeCart

FintechFrom 2021

Mobile Engineer · Mobile Team Lead

Led Android and iOS development, launched four applications, and developed architecture and CI/CD workflows. Worked on features including widgets, biometric login, and voice-assistant integration.

LaMetric

IoT2019–2021

Android Developer

Worked on connected-device applications, architecture, connection performance, caching, ARCore integration, and automated UI testing.

SoftServe

Software engineering2017–2019

iOS / Android Developer

Developed mobile applications, contributed to healthcare software, optimized a C++ streaming engine, and modernized legacy modules.

Building products and teams

Entrepreneurial experience alongside engineering roles.

Hardware startup

2022–2024

Founder · Tech Lead

Directed hardware–software integration, remote diagnostics, automated hardware and firmware deployment, and collaboration with engineering and supply teams.

Marketing software startup

2017–2021

Founder · Product Owner

Led a cross-functional team of more than ten people to deliver a loyalty SaaS MVP with backend APIs and mobile applications, and used early customer feedback to guide product development.

The capabilities behind the products

Engineering for our own products and for custom development.

Product building

Software applications, SDKs, hardware products, and PCBs.

AI & automation

AI pipelines, automation, and machine learning built into your product.

Growth & analytics

Measurement and integrations that help you understand and improve your product.

Infrastructure & connectivity

Cloud services and connectivity that support your product in use.

A practical engineering toolkit

Mobile development, architecture, automation, and connected products.

KotlinJavaSwiftDartFlutterC++FirebaseFastlaneJenkins

Talk about a custom product.

Alongside our own products, we also work with other teams. Share what you want to build and where you are today.

contact@have3tech.uk

International experience.Hands-on engineering.