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Innowise Sp. z o.o logo

Innowise Sp. z o.o

Semyon O. logo

Semyon O.

Available now

Senior Flutter Engineer @ Innowise Sp. z o.o

Senior
Seniority
GMT+01:00, Warsaw, Poland
Location & Timezone
$55 - $65/hr
Average Hourly Rate
English, Polish
Languages

Top skills

JavaScript
WebSockets
Fastlane
FinTech
Backend Development

About

Experienced software engineer with 7+ years of native/cross-platform applications development. Specialized in Flutter with 5+ years of commercial experience. Skilled in creating scalable and efficient cross-platform applications tailored to client needs.

Top skills

Verified by Pangea.ai due diligence

Top SkillsCurrent UsageSeniority
JavaScript
20%2 years
WebSockets
10%2 years
Fastlane
20%4 years
FinTech
20%7 years
Backend Development
30%7 years

All skills

Roles and tools, to bring ideas to life and create meaningful experiences

Mobile Apps
Integrations
Data Analytics and Visualization
API
E-Commerce
Helpdesk Software
Telemedicine
CRM
Marketplaces
Home Automation
Conversational AI
PaaS
Social Networks
Databases

Professional experience

Explore a curated selection of projects highlighting Semyon O.'s expertise and experience. Each project aims to showcase challenges, solutions, and the final outcome, along with the tools and technologies used.

Under MNDA
CAR SHARING APPLICATION — Senior Flutter Engineer
The cross-platform mobile application developed with Flutter to streamline task management for technicians servicing car-sharing fleets. It allows users to create, update, and track service tasks in real time while ensuring seamless synchronization across devices. The app supports offline mode, enabling technicians to work without an internet connection and sync data when online. Role-based access control ensures secure authorization, and built-in mapping helps technicians efficiently locate and service vehicles.
.NET
Under MNDA
BANKING APPLICATION — Senior Flutter Engineer
A banking application consisting of a mobile application for POS terminals and a web-based interface for employees. Users can create refunds using the POS. It is possible to create a group of merchants, generate/view reports and administrate users on a web application.
.NET
Under MNDA
HEALTHY FOOD APPLICATION — Flutter Engineer
Mobile application featuring product scanning capabilities and a web-based admin interface. Users can scan products to receive personalized health ratings tailored to their chosen diets and preferences. The web admin panel allows content updates, enhancing user engagement and operational efficiency.
.NET

Preferred tools

View the preferred tools and apps used by Semyon O. to assess compatibility and alignment.

Figma
Figma
Jira
Jira
Trello
Trello
Microsoft Teams
Microsoft Teams
Confluence
Confluence
Git
Git
Bitbucket
Bitbucket
Firebase
Firebase

Career highlights

Discover Semyon O.’s professional journey, including employment history, certifications, and educational background.

Senior Flutter Engineer
CAR SHARING APPLICATION⸺2024 - 2025
The cross-platform mobile application developed with Flutter to streamline task management for technicians servicing car-sharing fleets. It allows users to create, update, and track service tasks in real time while ensuring seamless synchronization across devices. The app supports offline mode, enabling technicians to work without an internet connection and sync data when online. Role-based access control ensures secure authorization, and built-in mapping helps technicians efficiently locate and service vehicles.
Senior Flutter Engineer
BANKING APPLICATION⸺2023 - 2024
A banking application consisting of a mobile application for POS terminals and a web-based interface for employees. Users can create refunds using the POS. It is possible to create a group of merchants, generate/view reports and administrate users on a web application.
Flutter Engineer
HEALTHY FOOD APPLICATION⸺2022 - 2023
Mobile application featuring product scanning capabilities and a web-based admin interface. Users can scan products to receive personalized health ratings tailored to their chosen diets and preferences. The web admin panel allows content updates, enhancing user engagement and operational efficiency.
Flutter Engineer
MAPPING APPLICATION⸺2021 - 2022
This application is a comprehensive mapping solution designed for cross-platform use, developed using Flutter. It focuses extensively on map functionalities, including the display of various objects, route drawing, detailed route viewing, and the management of both raster and vector map layers, alongside their caching. Additionally, the app offers capabilities for generating reports.
Flutter Engineer
CAR SHARING APPLICATION⸺2020 - 2021
A mobile cross-platform application designed to allow users to rent cars for short-term use. This solution is aimed at providing convenience and accessibility of vehicles for company employees who require temporary transportation without assigning a specific car to an individual employee.
Flutter Engineer
SCHEDULE APPLICATION⸺2020 - 2020
The application is designed to provide employees with a convenient and efficient way to access their work schedules. It allows users to view their upcoming shifts and manage their availability. The app features a user-friendly interface that displays a calendar view of the schedule, enabling employees to easily see their shifts at a glance. It also sends notifications about upcoming shifts and changes to the schedule.
Android Engineer
LOCATION / MESSENGER / TASK MANAGER APPLICATION⸺2019 - 2020
The application is developed for the continuous collection of client coordinates and their transmission to a server. It is modular in design, comprising several key components such as a messenger, task manager, and coordinate collector. Each module is capable of operating independently, allowing for flexibility in usage and functionality.
Android Engineer
COURIER APPLICATION⸺2018 - 2019
A mobile application designed to streamline and optimize the operations of courier services. It is tailored for couriers handling scheduled dispatches, facilitating efficient management of delivery processes from order reception to confirmation of completion. The application interacts with multiple cash registers through intent API, featuring a navigator for the convenience of couriers.
Android Engineer
SMS MANAGER APPLICATION⸺2018 - 2018
A mobile application designed for managing incoming and logging outgoing SMS messages. It features guaranteed message delivery and logging of message sending statuses.

Testimonials

Senior Mobile Developer @ Innowise Sp. z o.o

Innowise Sp. z o.o

Verified Testimonial

“A versatile and experienced engineer with over 7 years of building production-ready applications across Flutter and native Android. He consistently delivers reliable, scalable, and maintainable solutions - from analyzing requirements to architecture, development, CI/CD setup, and deployment. His work on SaaS platforms and cross-platform apps demonstrates both technical expertise and strong client communication skills. A dependable professional who elevates code quality and team performance on every project.“

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