Олена

HELEN SVISTYOLA
FRONTEND DEVELOPER | ANGULAR | REACT
SUMMARY

Frontend Developer with 4 years of experience in component-based architectures
(React, Angular v15-20). Specialized in data-intensive applications, complex admin
Location and contacts panels, and RBAC systems. Expert in managing asynchronous data flows and state
management. Proven ability to deliver fully responsive features for desktop and mobile
Vinnitsia, Ukraine (Ionic) environments. Experienced in working independently across the full frontend
Ready for remote work lifecycle, focusing on modular architecture, REST API integration, and scalable UI
components.
[open contact info](look above in the "contact info" section)

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 maintained Angular applications, including admin panels and public-
[open contact info](look above in the "contact info" section)
svistyola/ facing websites

H
Implemented role-based access, route guards, TTP interceptors, and REST API
HARD Skills integration

Built complex reusable form components with custom validatio n

Angular 15-20 (RxJS, Signals) W J
orked with signals, standalone components, Rx S and ngx-translate

TypeScript / JavaScript (ES6+) Fixed bugs and extended existing functionality based on client re uest q s

Ionic
(
Integrated third-party services and libraries charts, maps, media tools )

React (Zustand, TanStack Query)
Contributed to product brainstorming sessions, providing input on both UI U / X
improvements and backend data flow logic
HTML/CSS/SCSS
Bootstrap Selected projects :
FSD Architecture SCOUTRIX - Sports analytics & management platform for basketball clubs
REST API featuring multi-level RBAC, multilingual support, deep per formance metrics,
Node.js/Express.js interactive reports, and training management tools.

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

DELORAIN - AI-driven SaaS that transforms raw product photos into
SOFT SKILLS professional visuals. Implemented a multi-file upload flow to A S S . W 3

KOTLEAK V
- Industrial IoT inter face for air leak detection. isualized diagnostic
Self-Management/Autonomy data to prevent energy waste and reduce industrial C 2 impact. O

User-Centric Thinking CALODAR — H &
ealth Nutrition analytics dashboard. Developed an inter face to
Problem-Solving Mindset track dietary data, calorie intake, and nutritional insights.

Attention to Detail PHYSIOLOG — M edTech ecosystem for patient R OM
tracking. Built a eb W
Remote collaboration dashboard and an Ionic mobile app with Barcode login and Camera API for
orthopedic photo uploads .

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

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

Trello, Worksection
Summer 2022 – Feb 2023 | Remote
PET PROJECTS Freelance — Frontend Developer
React GitHub | Live Demo
D / W
eveloped Node.js Express middleware for a ordPress-to- eadless migration. H
Implemented JW
T authentication and complex data fetching via Strapi API.

LANGUAGES Built a dress rental application with Ionic

Tech stack: JavaScript, TypeScript, Angular, Ionic, Node.js, Express, MongoDB, Strapi
English Upper-Intermediate

Spoken - B1

Ukrainian Native speaker
Apr 2018 – Dec 2021 | Remote
WEZOM — Deputy Head of Copywriting Department
Russian Native speaker
Managed a team of 35 copywriters, overseeing task distribution and deadlines.
hobbies Collaborated with SEO and Marketing teams to ensure content quality and project
reporting. Handled team per formance tracking and budget/salary calculations.
Reading (English-only)
REACT GitHub | Live Demo

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