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I am a creative and results-driven software engineer with 4 years of professional experience, specializing in Flutter (3 years) and NestJS (1 year). I thrive in dynamic, collaborative environments and enjoy turning complex problems into scalable, high-quality solutions. I lead teams, communicate clearly with clients, and am passionate about delivering value through well-architected mobile and back-end features. I am actively seeking full-time or contract roles to contribute to forward-thinking projects and grow with ambitious teams.…I am a creative and results-driven software engineer with 4 years of professional experience, specializing in Flutter (3 years) and NestJS (1 year). I thrive in dynamic, collaborative environments and enjoy turning complex problems into scalable, high-quality solutions. I lead teams, communicate clearly with clients, and am passionate about delivering value through well-architected mobile and back-end features. I am actively seeking full-time or contract roles to contribute to forward-thinking projects and grow with ambitious teams.

Andrii Moiseenko

App Developer, Back-End Developer, Full Stack Developer, +2

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I am a creative and results-driven software engineer with 4 years of professional experience, specializing in Flutter (3 years) and NestJS (1 year). I thrive in dynamic, collaborative environments and enjoy turning complex problems into scalable, high-quality solutions. I lead teams, communicate clearly with clients, and am passionate about delivering value through well-architected mobile and back-end features. I am actively seeking full-time or contract roles to contribute to forward-thinking projects and grow with ambitious teams.…I am a creative and results-driven software engineer with 4 years of professional experience, specializing in Flutter (3 years) and NestJS (1 year). I thrive in dynamic, collaborative environments and enjoy turning complex problems into scalable, high-quality solutions. I lead teams, communicate clearly with clients, and am passionate about delivering value through well-architected mobile and back-end features. I am actively seeking full-time or contract roles to contribute to forward-thinking projects and grow with ambitious teams.

Available to hire

I am a creative and results-driven software engineer with 4 years of professional experience, specializing in Flutter (3 years) and NestJS (1 year). I thrive in dynamic, collaborative environments and enjoy turning complex problems into scalable, high-quality solutions. I lead teams, communicate clearly with clients, and am passionate about delivering value through well-architected mobile and back-end features.

I am actively seeking full-time or contract roles to contribute to forward-thinking projects and grow with ambitious teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Project/Contract Flutter Engineer at DropPayment

January 1, 2025 - Present

DropPayment is a CRM platform for cryptocurrency exchange operations. Implemented real-time transaction updates, in-app chat via WebSocket, push notifications with deep linking, and a cloud-based backend. Built CI/CD pipelines and ensured cross-platform delivery to App Store, Google Play, and Firebase Hosting.

Flutter Engineer at DropPayment

January 1, 2025 - Present

CRM for cryptocurrency exchanges. Real-time transaction updates; WebSocket chat; push notifications with deep linking; CI/CD with Bitbucket Pipelines; release processes to App Store and Google Play.

Software Engineer (Project) at DropPayment

January 1, 2025 - Present

CRM platform designed for cryptocurrency exchange operations, including real-time transaction updates, in-app chat, and engagement features. Built deployment pipelines and enhanced security features.

Project/Contract Mobile Engineer at Indago

October 1, 2024 - Present

Indago is a multifunctional reading app with e-book and audiobook experiences. Implemented Bookmarks feature with folders, Chapter View reading mode, and optimized navigation and UX.

Flutter Engineer at Indago

October 1, 2024 - Present

Multifunctional reading app (ebook + audiobook) with bookmarking, Chapter View, sharing, and responsive reading flow; RTL support and offline capabilities.

Software Engineer (Project) at Indago

October 1, 2024 - Present

Indago is a multifunctional reading app combining e-book and audiobook experiences. Delivered features such as bookmarking, Chapter View reading mode, and UI enhancements for a seamless reading flow.

Project/Contract Flutter Developer at Qirnas

April 1, 2024 - Present

Qirnas is an RTL educational app with interactive lessons and practice. Implemented waitlist with referral system, overlay UI, and multi-language RTL support.

Flutter Engineer at Qirnas

April 1, 2024 - September 9, 2025

Educational RTL-capable app with interactive lessons, practice sessions, gamified economy, autoscroll, overlay UI, build flavors, haptic feedback, and MathML support.

Software Engineer (Project) at Qirnas

April 1, 2024 - Present

Qirnas is an educational mobile application with RTL support for Arabic-speaking users. Implemented interactive lessons, practice sessions, a gamified economy, overlays for contextual information, build flavors for environments, and added haptic feedback and sound effects.

Flutter Engineer at Med Place

October 1, 2023 - Present

Healthcare ecosystem including doctor and patient apps, a web admin panel, and Firebase-backed real-time data synchronization; UI enhancements and third-party service integration fixes.

Flutter Engineer at PropelMe

October 1, 2023 - Present

CRM-style app for seafarers: real-time transactions, in-app chat via WebSocket, push notifications with deep linking, environment-specific builds, and release management.

Software Engineer (Project) at Med Place

October 1, 2023 - Present

A four-application healthcare ecosystem (doctor and patient apps, admin panel, and Firebase-backed backend) enabling appointments, patient monitoring, and secure data exchange. Implemented UI improvements and resolved third-party integration issues; built and published app versions to App Store and Google Play.

Flutter Engineer at Piogroup Software

September 1, 2023 - September 9, 2025

Integrated Firebase Authentication for secure sign-in and registration; built a local caching system for offline access; implemented a Find Friends feature with Google Maps and custom markers; enabled offline access to media content; created a dynamic news feed displaying articles, images, and videos.

Flutter Engineer at Time2mobile

September 1, 2023 - Present

Developed a real-time messaging system using Firebase and WebSockets; built core app features with real-time database updates; published applications to App Store, Google Play, and Firebase Hosting; created Firebase Cloud Functions to track user session time; implemented build flavors for multiple app configurations; added autoscrolling for enhanced UX; integrated push notifications with deep linking; set up CI/CD pipelines with Bitbucket Pipelines; represented the development team in direct client communications.

Software Engineer at Piogroup Software

September 1, 2023 - September 9, 2025

Firebase Authentication; local caching to reduce DB load; 'Find Friends' feature with Google Maps and custom markers; offline media access; dynamic news feed.

Flutter Engineer at Time2mobile

September 1, 2023 - Present

Real-time messaging system using Firebase and WebSockets; published apps to stores; Firebase Cloud Functions for session tracking; CI/CD with Bitbucket Pipelines; client-facing development liaison.

Flutter Engineer at PioGroup Software

September 1, 2023 - September 9, 2025

Integrated Firebase Authentication for secure user sign-in and registration. Built a local caching system to reduce database load and support offline functionality. Developed a Find Friends feature with Google Maps and custom markers. Enabled offline access to media content (images, videos, audio) for a seamless user experience. Created a dynamic news feed displaying articles, images, and videos.

Flutter Engineer at Time2Mobile

September 1, 2023 - Present

Developed a real-time messaging system using Firebase and WebSockets. Built core app features with real-time database updates. Published applications to the App Store, Google Play, and Firebase Hosting. Created Firebase Cloud Functions to track user session time. Implemented build flavors to manage multiple app configurations. Added autoscrolling functionality for enhanced UX. Integrated push notifications with deep linking for better engagement. Set up CI/CD pipelines with Bitbucket Pipelines for automatic app builds. Represented the development team in direct communication with clients.

Project/Contract Flutter Engineer at PropelMe

April 1, 2023 - Present

Seafarer employment app that matches profiles with job opportunities; features include browsing, signaling interest, and messaging with secure authentication.

Flutter Engineer at PropelMe

April 1, 2023 - September 9, 2025

Seafarers app enhancements: waitlist/login with referral program, overlay components, navigation improvements, and performance optimizations.

Software Engineer (Project) at PropelMe

April 1, 2023 - Present

PropelMe is a CRM-style application for seafarers, including profile management, job recommendations, and messaging. Implemented real-time transaction updates, in-app chat using WebSocket, and push notifications. Built multi-environment build flavors and CI/CD pipelines.

Project/Contract Developer at PeopleRent

October 1, 2022 - Present

Real estate matching app enabling landlords and tenants to browse listings, like matches, and chat via subscription; implemented secure authentication and real-time messaging with offline caching.

Mobile Developer at People Rent

October 1, 2022 - Present

Real estate platform enabling landlord-tenant matches, real-time messaging, and Hive-based local caching for offline access; secure authentication and chat features.

Software Engineer (Project) at People Rent

October 1, 2022 - Present

Real estate matching app enabling landlords and tenants to browse and like listings, with real-time messaging and a referral-based onboarding flow. Implemented secure authentication and real-time communications; built dynamic user screens with offline caching using Hive.

Backend Engineer at Location Digis

July 1, 2022 - September 9, 2025

Developed RESTful APIs using NestJS and TypeORM for a small business CRM; implemented authentication and role-based authorization using JWT; configured CI/CD pipelines with TeamCity and Docker for automated testing and deployment; created reusable data validation logic with class-validator and custom pipes.

Frontend/Backend Developer at Location Digis

July 1, 2022 - September 9, 2025

RESTful APIs with NestJS and TypeORM for a small business CRM; JWT authentication and RBAC; CI/CD with TeamCity and Docker; reusable data validation with class-validator and pipes.

Backend Engineer at Location Digis

July 1, 2022 - September 9, 2025

Developed RESTful APIs using NestJS and TypeORM for a small business CRM system. Implemented authentication and role-based authorization using JWT. Configured CI/CD pipelines with TeamCity and Docker for automated testing and deployment. Created reusable data validation logic using class-validator and custom pipes.