Максим

Maksym Nikolaienko
Senior Flutter Developer | Java / Spring Full Stack
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | t.me/good_username_good
Burgas, Bulgaria | Remote | 4 years: commercial development since autumn 2022

Build and maintain mobile, backend and industrial software, from applications and APIs to deployment and
releases. End-to-end product ownership and cross-functional team delivery. English: B2 (self-assessed); strong
reading/listening, improving spoken fluency. Target: USD 5,000/month before personal taxes.

CORE SKILLS
Mobile: Flutter, Dart, Riverpod, BLoC, iOS, Android, Windows, Linux; API integration, local data storage, animations.
Backend / Desktop: Java, Spring, Spring Security, JPA, JavaFX, MySQL, REST APIs.
Delivery / Integrations: Docker, S3, Linux, App Store Connect, Google Play, Codemagic; AI services, weighing hardware.

PROFESSIONAL EXPERIENCE
2022 - Present | Selected product and project experience

Senior Full Stack Developer | International company, NDA
Sole developer | End-to-end product delivery
- Independently built a Java/Spring and Flutter product suite: a cryptocurrency wallet, administration dashboard,
support system and digital banking application.
- Implemented an integration with a Canadian banking partner for real transactions, owning the backend and client
applications.
- Delivered two news websites, a car rental service and an automotive parts store; built an administration panel and a
Telegram bot for each website.
- Owned architecture, development and deployment. Financial product names and the employer’s identity remain
confidential under NDA.

Full Stack Developer | Persha Vahova, Kropyvnytskyi
Java / JavaFX / Spring / Flutter | Retail and manufacturing
- Maintained live smart-scale software in JavaFX, developed a new JavaFX/Spring version and built a Flutter price
checker for Linux, Windows and Android.
- Built a digital signage platform with schedules, device groups, monitoring, analytics, access control, licensing and
updates; used Docker, S3, Spring Security and JPA.
- At departure, the platform served approximately 200 devices across a cafe chain; onboarding of roughly 50
additional supermarket devices was beginning.
- Built a JavaFX/MySQL recipe-weighing application connected to scales, plus a fruit-packing management system with
a server, admin tools and a visual label editor supporting barcodes and QR codes.
- Delivered an AI wine assistant and a KFC order-completeness test stand with a Java server and cross-platform Flutter
client.

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TEAM-BASED AND CONTRACT DEVELOPMENT

Middle Flutter Developer | Team-based mobile development
Flutter / Dart | Complete application implementation
Independently implemented each assigned application end to end: Figma UI, business logic, APIs, data storage and
animations. Delivered applications with 50+ screens at a pace of about four per month. Worked with Codemagic for iOS
releases.

Middle Flutter Developer | eclipt.ai
Cross-functional team: design, backend, team lead and QA
Built a Flutter/Riverpod app from scratch: sheet-music capture, server-side AI integration and melody playback. The
product was released on the App Store; its name is covered by NDA.

Developer | Long-term client
Product development and ongoing maintenance
Built an Android/iOS messenger and admin panel: direct and group chats, photos, files, voice messages, calls and
notifications. Own fixes, feature development, servers, updates and store submissions.

SELECTED PROJECTS
Adway Ads | Middle Flutter Developer, team project
Implemented the iOS/Android mobile app: advertiser and driver roles, campaigns, background GPS, maps, QR verification, chat
and push notifications.
Case study | Google Play | App Store

Loviix | Middle Flutter Developer, team project
Flutter social app with location-based discovery, matching, chat, stories, events and subscription flows. Publicly released on the
App Store.
App Store

Commissioned apps and releases
AI calorie tracker with recipes and Android/iOS health integrations; Math-S AI homework solver; cricket app. Freelance delivery
of 300+ separate Flutter apps in six months, including publication; Riverpod/BLoC and precise Figma implementation.

Web projects for a long-term client
Delivered coffee-offer, agricultural equipment and real estate websites; continue to maintain the client’s products.

PUBLIC PORTFOLIO
Yellow Panda / Android | Smiley Messenger / iOS
news-global24.com | world-news24.com | driveluxrent.com | vash-autogaraj.com
coffeeking-delivery.com | aa-agriculture.com | immoco-sarl.com | carbongroup.ca

EDUCATION AND TRAINING
V. N. Karazin Kharkiv National University - Bachelor’s and Master’s degrees; specialty 105, Applied Physics and Nanomaterials.
Faculty of Radiophysics, Biomedical Electronics and Computer Systems.
EPAM External Course, Java: 2020, 6 months; final banking MVC web application (JSP, Servlets, JDBC). Stepik: Android/Kotlin,
Kotlin JVM, Linux, JavaScript and Python - certificates with distinction.

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