Sergey

Sergey Morozov
[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)
UI-Focused Full-Stack Engineer | Flutter, Vue.js, React |
t.me/sergeymorozovdev
Elixir, Python, Node | Bridging Native-Grade UI with
Ukraine
Custom AI Automation

SUMM ARY

I am a Full-Stack Engineer with a pragmatic, "get-it-done" mindset. Over my career, I’ve evolved from building hybrid mobile
MVPs to engineering high-load, reactive systems for the US and EU markets, diving deep into complex domains like iGaming,
Fintech, HealthTech, and Enterprise platforms (including BOSCH).
WHAT I BUILD & HOW I WORK:
BACKEND & CONCURRENCY: I design fault-tolerant, scalable architectures using Elixir, Erlang, and Node.js. If a system
needs to handle massive real-time data streams (like crypto trading or live sports betting), this is where I thrive.
FRONTEND & MOBILE: I deliver fast, pixel-perfect experiences using Vue.js, React, and Flutter/Dart. I focus on strict
performance, deep state management, and seamless cross-platform delivery.
THE UNFAIR ADVANTAGE (AI, PYTHON & AUTOMATION): I don't just use standard tools; I build custom automation
pipelines. I engineer advanced Telegram scrapers and bots utilizing Python, Telethon, Redis, RQ, PostgreSQL, etc.
Furthermore, I architect and run my own sophisticated local AI infrastructure—managing custom multi-model routing,
fallback logic, and API orchestration across 20+ LLM providers natively integrated into my project. If there is a manual
process, I will script it, automate it, or route an AI model to handle it.
TECH ARSENAL:
Front-End:TypeScript, JavaScript, Vue.js, Nuxt.js, React.js, Next.js, TailwindCSS
Mobile & Hybrid: Flutter, Dart, NativeScript, Electron, Cordova
Back-End & DB: Python, Node.js, Elixir, Erlang, Phoenix, PostgreSQL, Ecto
AI & Tooling: RAG Pipelines, LLM Orchestration, Agentic Workflows, LangChain, AI APIs, Telegram Bots, Web Scraping
Architecture & Tools: REST, WebSockets, gRPC, Protobufs, Git, Docker

EXPERIENCE

Full-Stack Engineer (Flutter / Elixir / Mobile & Backend) 06/2024 - Present
361 GRAD DIGITAL GmbH
Full-Stack Engineer specializing in cross-platform mobile development and highly concurrent backend architectures for major
European enterprise clients, including BOSCH.
ENTERPRISE EVALUATION PLATFORM (BOSCH): Engineered a comprehensive internal training and assessment system
using Elixir and Phoenix. Integrated ML-assisted algorithms for skill-gap analysis, automatically routing employees to
targeted training modules and accelerating the corporate upskilling pipeline by ~35%.
CROSS-PLATFORM MOBILE ENGINEERING (KOOS): Spearheaded the development of complex, high-performance mobile
applications utilizing Flutter and Dart. Delivered highly responsive, native-grade user experiences across iOS and Android
from a single codebase, reducing parallel delivery cycles by ~50%.
AUTOMATED DOCUMENT PIPELINES (KOOS): Implemented a robust document automation backend with Elixir. Built
scalable pipelines for dynamic, heavy-load PDF generation and data aggregation, cutting manual reporting and processing
time by ~40%.
CROSS-FUNCTIONAL ENTERPRISE DELIVERY: Collaborated directly with B2B stakeholders and product managers to
translate complex corporate requirements into scalable, production-grade technical solutions, ensuring strict adherence to
European data standards.

Full-Stack Engineer (Elixir / React.js / Crypto) 01/2023 - 06/2024
Introduct Group
Full-Stack Engineer specializing in high-concurrency backend systems and reactive interfaces for a high-load cryptocurrency
casino and trading platform.
HIGH-CONCURRENCY BACKEND ARCHITECTURE: Engineered a fault-tolerant, highly scalable backend utilizing Elixir and

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Erlang. Designed and implemented gRPC APIs with Protocol Buffers for data serialization, ensuring ultra-low latency data
exchange for high-frequency crypto transactions.
REACTIVE TRADING & ANALYTICS UI: Built dynamic front-end architectures using React.js to process and visualize real-
time market data. Developed interactive dashboards featuring live buy/sell metrics, financial graphs, and betting states,
reducing time-to-transaction for users by ~25%.
DATABASE & PERFORMANCE OPTIMIZATION: Refactored critical backend components and optimized complex
PostgreSQL architectures. Streamlined data pipelines, enhancing overall platform throughput and reducing system
downtime by ~40% during peak gambling traffic spikes.
AI-INTEGRATED RISK ASSESSMENTS: Integrated machine learning APIs within the Elixir backend ecosystem to monitor
betting patterns and user behaviors. Built automated pipelines for real-time fraud detection and risk assessment, fortifying
platform security.

Full-Stack Engineer (Vue.js / Node.js & Hybrid Mobile) 11/2021 - 01/2023
Devox Software
Full-Stack Engineer (Vue.js / Node.js) driving cross-platform development and real-time data architecture for a high-load US
iGaming and Sports Betting platform.
GEO-COMPLIANCE MVP & MOBILE EXPANSION: Faced with strict US state-level distribution restrictions engineered a
strategic cross-platform Android application using NativeScript-Vue. Successfully delivered the PoC, bypassing initial
constraints and paving the way for broader market access.
REAL-TIME GAMING ARCHITECTURE: Built highly reactive, low-latency UI components for live sports betting and casino
slots using Vue.js and Tailwind CSS. Seamlessly integrated WebSocket streams to handle high-frequency data updates (live
odds, game states) without compromising front-end rendering performance.
FULL-STACK EVOLUTION & BACKEND SERVICES: Expanded scope from Front-End to Full-Stack, developing robust Node.js
backend services. Architected RESTful APIs to manage secure database interactions, user wallet transactions, and
seamless bet processing.
AI-INTEGRATED DATA PIPELINES: Collaborated with cross-functional teams to integrate ML-assisted API endpoints within
the Node.js backend, streamlining real-time risk assessment and automated odds processing at scale.

Software Engineer (Front-End / Vue.js & Nuxt.js) 06/2020 - 11/2021
SoftServe
Front-end engineer for a large-scale enterprise Document Management System (DMS) tailored for the US manufacturing
sector, operating within a 50+ member cross-functional ecosystem.
DYNAMIC DOCUMENT AUTOMATION: Engineered a highly flexible, logic-driven UI utilizing Vue.js and Vuetify. Built complex
component architectures that allowed users to assemble conditional, data-driven document pipelines rather than static
templates, increasing overall processing efficiency by ~30%.
NUXT.JS BFF ARCHITECTURE: Leveraged Nuxt.js as a robust middle-tier (Backend-for-Frontend) to seamlessly bridge the
reactive UI with a sprawling .NET backend ecosystem, ensuring fast data synchronization, rendering, and stable state
management.
TECHNICAL DEBT STRATEGY: Proactively addressed aggressive delivery timelines and mounting technical debt by
negotiating and executing dedicated refactoring sprints. Systematically resolved the critical bug backlog and cleaned up
the codebase, improving system stability and reducing issue resolution time by ~40%.
LARGE-SCALE AGILE SYNCHRONIZATION: Collaborated in a high-paced environment distributed across 3 parallel
development squads. Aligned closely with .NET developers, QA engineers, and product managers to maintain strict UI/UX
standards and ensure on-time feature delivery for the US market.

Software Engineer (Front-End / HealthTech & AdTech) 06/2019 - 06/2020
Vilmate LLC
Front-End Engineer specializing in complex UI architectures and legacy migrations for EU-based AdTech and HealthTech
sectors.
HEALTHCARE TELEMEDICINE PORTAL: Engineered the front-end architecture for a Swedish telehealth platform connecting
remote patients with medical staff. Developed comprehensive dashboards to process and visualize real-time medical IoT
data (blood pressure, glucose levels) with high accuracy and reliability.
LEGACY TO MODERN MIGRATION: Initiated and led the strategic migration of the HealthTech portal from AngularJS to
modern Angular (2+). Prototyped the new architecture, utilizing RxJS for complex state management, significantly
improving application maintainability and scalability for future feature rollouts.
ADTECH WIDGET ECOSYSTEM: Architected a dynamic widget library for large-scale Digital Signage networks. Built a highly
customizable, cross-framework widget ecosystem (AngularJS, jQuery, vanilla JS/TS) that integrated seamlessly into a
proprietary visual editor via complex iframe communication protocols.

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UI CUSTOMIZATION & PERFORMANCE: Collaborated directly with design teams to expand widget customization
capabilities (styling, layouts, behaviors) while strictly maintaining rendering performance and cross-browser compatibility
across diverse advertising hardware.

Software Engineer (Front-End / Vue.js) 02/2017 - 06/2019
Valtech
Front-end engineer driving UI modernization and custom CMS integrations for major EU enterprise clients across the
eCommerce and Retail sectors.
ENTERPRISE LEGACY MIGRATION: Spearheaded the transition of a high-traffic global footwear e-commerce platform from
legacy jQuery to a modular Vue.js (v2) architecture. Componentized the UI layer, accelerating new feature rollout by ~35%.
UNDER-THE-HOOD REDESIGN & PERFORMANCE: Executed seamless technical redesigns across multiple concurrent
projects. Replaced heavy DOM manipulations with modern reactive frameworks, reducing average page load times by
~40% while preserving strict brand visual consistency.
CUSTOM CMS INTEGRATION: Developed and maintained tailored front-end architectures for Adobe Experience Manager
(AEM) and Episerver, streamlining content management workflows for EU marketing teams.
AGILE MULTI-PROJECT DELIVERY: Successfully balanced parallel workflows and context-switched across 3+ concurrent
enterprise projects, partnering directly with design, UX, and backend teams to ensure high-quality, on-time deployments.

Software Engineer (Front-End & Hybrid Mobile) 03/2015 - 02/2017
Sky-tech.co
Core developer for a comprehensive business ecosystem encompassing ERP, eCommerce, and Retail platforms for the
Ukrainian market.
UNIFIED MULTI-PLATFORM ARCHITECTURE: Leveraged AngularJS, Cordova, and Electron to engineer a cohesive
application suite across web, Android, and Windows, bridging fragmented systems and reducing parallel development
cycles by ~40%.
DROVE UI/UX MODERNIZATION: Rebuilt and standardized interface components using Bootstrap, ensuring cross-device
consistency and accelerating new UI feature rollout time by ~30%.
PERFORMANCE & STABILITY: Refactored critical legacy code within ERP modules, optimizing rendering speeds, decreasing
average data load times by ~50%, and significantly minimizing technical debt.
CROSS-FUNCTIONAL COLLABORATION: Partnered closely with product owners and business stakeholders to translate
complex retail requirements into production-ready, scalable technical solutions.

EDUCATION

Information Security Management 09/2014 - 07/2015
Kharkiv National University of Radioelectronics - Master's degree

Information Security Management 09/2010 - 07/2014
Kharkiv National University of Radioelectronics - Bachelor's degree

L ANGUAGES

Ukrainian Native English Fluent
Russian Native

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