Andrii

ANDRII [open contact info](look above in the "contact info" section)

[open contact info](look above in the "contact info" section)

POLISHCHUK Warsaw,Poland
[open contact info](look above in the "contact info" section)
R E A C T / R E A C T N A T I V E @a4957112
DEVELOPER

PROF I L E S KI L L S

I’m a React/React Native Developer with 3 years of handson React Native - 3 years
experience crafting web sites and mobile apps from the React - 3 years
ground up. I’m passionate about creating seamless, user- Javascript ES6+/Typescript - 3
friendly experiences for users and enjoy working through years
the entire development process, from brainstorming new REST API - 3 years
ideas to delivering polished, live products. I also love Node.js - 3 years
learning, growing, and improving how we work together. HTML, CSS, SCSS, Less - 3 years
Swift - 2 years
Kotlin - 2 years
WORK EXPERI ENCE Next.js - 3 years
Redux: Thunk, Toolkit, Saga - 2
years
Aug 2024 - Presen
Jest - 2 years
Warsaw, Poland | Hybrid
React Query - 2 years
TenThousand, React Native Develope

Joined the development team to build a lifestyle L ANGUAGES
management mobile app that combined task
planning, smart reminders, and expense tracking. Ukrainian (native)
Implemented interactive custom UI library and Russian (native)
intuitive navigation with React Navigation, ensuring |English (B2)
a smooth user journey.
Developed custom native modules for Android/iOS
to handle notifications and background tasks
efficiently
Optimized app performance by profiling bottlenecks
and improving responsiveness, resulting in a more
fluid experience
Designed and maintained a CI/CD pipeline to
streamline testing, deployment, and delivery of
frequent updates.
Provided post-launch support, including feature
improvements and bug fixes, keeping user
engagement and satisfaction high.

Stack: React Native, TypeScript, Redux.js, React
Navigation, Firebase, REST API, JavaScript, React.js
 WORK EXPERI ENCE

June 2023 – Aug 2024
Warsaw, Poland | Hybrid
Acaisoft, React Native Developer

Took part in two client projects as a member of a cross-functional team.
Educational mobile app: implemented interactive lessons, progress tracking, and
authentication with Firebase.
Restaurant reservation system: developed booking and scheduling features, along
with push notifications for reminders.
Built reusable UI components and optimized global state management with Redux to
improve scalability across projects.
Collaborated with backend and QA engineers to integrate APIs effectively and deliver
a consistent user experience.

Stack: React Native, React.js, Next.js, TypeScript, JavaScript, Redux Toolkit, Redux-Saga,
Zustand, REST API, Firebase, Stripe, AWS (S3), Jest, Reanimated 2/3.

Jan 2022 – June 2023
Odesa, Ukraine | Remote
Frontend Developer (Upwork)

Delivered several mobile and web applications for clients, gaining practical
experience in real-world problem-solving and production deployment.
Contributed to building a full-featured e-commerce platform from scratch, including
product catalog, user authentication, and order management.
Integrated Stripe for secure online payments, ensuring a smooth checkout process
and compliance with industry standards.
Focused on scalability, maintainability, and clean architecture to support long-term
growth of delivered projects.

Stack: React Native, React.js, Next.js, TypeScript, JavaScript, Redux Toolkit, Redux-Saga,
Zustand, REST API, Firebase, Stripe, AWS (S3), Jest, Reanimated 2/3.