Олена

HELEN SVISTYOLA
FRONTEND DEVELOPER | ANGULAR | REACT
SUMMARY
Frontend Developer with 4 years of experience in component-based architectures
(Angular v15-20, React). Specialized in data-intensive applications, complex admin
Location and contacts panels, and RBAC systems. Proven ability to deliver fully responsive features for desktop
and mobile (Ionic) environments. Experienced in working independently across the full
Vinnitsia, Ukraine frontend lifecycle, focusing on modular architecture, REST API integration, and scalable
Ready for remote work UI components. My previous experience managing a 35+ person department
strengthened my communication, prioritization, and ownership skills, allowing me to
[open contact info](look above in the "contact info" section) collaborate effectively across technical and non-technical teams.
WORK EXPERIENCE
[open contact info](look above in the "contact info" section)
Feb 2023 – Dec 2025 | Remote
@helena42 TLV Generator — Frontend Developer
D eveloped and supported Angular-based web/desktop applications and an Ionic
[open contact info](look above in the "contact info" section)
svistyola/ mobile app.

Implemented role-based access, route guards, HTTP interceptors, and REST API
HARD Skills integration.

Worked with Signals, standalone components, RxJS, and integrated third-party
Angular 15-20 (RxJS, Signals) tools (charts, maps, ngx-translate).

TypeScript / JavaScript (ES6+) Contributed to product brainstorming sessions, providing input on both UI/UX
Ionic improvements and backend data flow logic.

React (Zustand, TanStack Query)
Collaborated closely with backend engineers on legacy code auditing.

HTML/CSS/SCSS Assisted a Junior QA and Junior Backend Developer with understanding the
project, designing server-side logic, and helping debug backend issues.
Bootstrap
Selected projects:
FSD Architecture
REST API SCOUTRIX - Sports analytics & management platform for basketball clubs
Node.js/Express.js featuring multi-level RBAC, multilingual support, deep performance metrics,
MongoDB/Mongoose interactive reports, and training management tools.

Cloud Storage (AWS S3)
GASOLINE - Tinder-like social app built with Ionic. Features gesture-based
swipe mechanics and a secure real-time chat with content filters.

C#, ASP.NET Core (Basic)
DELORAIN - AI-driven SaaS that transforms raw product photos into
professional visuals. Implemented a multi-file upload flow to AWS S3.

SOFT SKILLS KOTLEAK - Industrial IoT interface for air leak detection. Visualized diagnostic
data to prevent energy waste and reduce industrial CO2 impact.

Self-Management/Autonomy CALODAR — Health & Nutrition analytics dashboard. Developed an interface to
User-Centric Thinking track dietary data, calorie intake, and nutritional insights.

Problem-Solving Mindset PHYSIOLOG — MedTech ecosystem for patient ROM tracking. Built a Web
Attention to Detail dashboard and an Ionic mobile app with Barcode login and Camera API for
orthopedic photo uploads.

Remote collaboration
SCORE — AR-powered fan engagement platform. Integrated DeepAR masks for
TOOLS real-time video reactions, built a live voting system with weekly leaderboards.

Bitbucket, Git, TortoiseGit Tech stack: Angular 15-20, RxJS, TypeScript, JavaScript, Ionic, HTML, SCSS,
Postman Bootstrap, REST API, ngx-translate, D3.js, Mapbox, Google Maps, AWS S3, DeepAR

Figma, Photoshop Summer 2022 – Feb 2023 | Remote
Trello, Worksection Freelance — Frontend Developer
PET PROJECTS D eveloped Node.js/Express middleware for a WordPress-to-Headless migration.
Implemented JWT authentication and complex data fetching via Strapi API.

React GitHub | Live Demo Built a dress rental application with Ionic

LANGUAGES Tech stack: JavaScript, TypeScript, Angular, Ionic, Node.js, Express, MongoDB, Strapi

Apr 2018 – Dec 2021 | Remote
English Upper-Intermediate

Spoken - B1 WEZOM — Deputy Head of Copywriting Department
Ukrainian Native speaker Managed a team of 35 copywriters, overseeing task distribution and deadlines.
Russian Native speaker
Collaborated with SEO and Marketing teams to ensure content quality and project
reporting. Handled team per formance tracking and budget/salary calculations.
hobbies REACT GitHub | Live Demo

Reading (English-only) Pet project: Reactive Cyberpunk Character. An interactive web-environment for desktop
and mobile where a character’s behavior and mood dynamically adapt to real-time API
data and manual user triggers.
Stack: React, TypeScript, Zustand, TanStack
Query, Axios, MSW, React Hook Form.

Architecture: FSD, React Portals, Custom
Hooks.

UI: Recharts, RC-Pagination, React-Day-
Picker, Clsx
Pages:

Auth — mocked authentication with API simulation

Dashboard — real-time Weather & Bitcoin APIs, complex state sync

Logs — table with mocked data and pagination

Guidance — onboarding Swiper for first-time users