Contact information

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Work experience

Full stack програміст

from 01.2025 to now (1 year 2 months)
Appexoft, Львів (IT)

Worked on a React-based SaaS product for AI-powered advertising campaigns with Facebook and Instagram integrations, improving UI consistency and responsiveness using Bootstrap. Tech stack: React.js, JavaScript, Bootstrap, scss

Built and scaled a full-stack, multi-tenant SaaS platform for business telephony from scratch to MVP, with AI-driven call processing, including phone number provisioning, inbound and outbound calls, IVR flows, role-based access,webhooks, and call history. Deployed the frontend on Vercel and the backend on Railway with a PostgreSQL database, keeping complex SIP and telecom logic hidden from end users. Tech stack: Next.js, TypeScript, shadcn/ui, Tailwind, NestJS,Prisma, PostgreSQL, Clerk, Jambonz, Bandwidth,REST APIs, Webhooks, Vercel, Railway

Developed an AI-powered learning platform to improve knowledge and communication skills of employees in alarge medical company. Implemented real-time text andvoice interactions, role-play scenarios, AI avatars, lessons,assessments, progress tracking, leaderboards, and an admin dashboard. Tech stack: React, TypeScript, Zustand, Material UI,WebSockets, LiveKit, AI Voice APIs

Worked closely with backend developers, designers,and product managers to deliver scalable SaaSsolutions used in production

Frontend Developer

from 07.2023 to 02.2024 (8 months)
NGO Treasure house of projects, Київ (IT)

Contributed to the implementation of user registration in a new volunteer project, utilizing contemporary technologies.

TypeScript: Proficiency in working with TypeScript, including type definition, interface usage, and handling data types.

Material-UI: Experience in using Material-UI to create styles and components within React applications.

Webpack: Competence in configuring Webpack, including loader installation and configuration, as well as addressing issues related to the module system.

Image Handling: Managing images in the application, including correct path setup, troubleshooting errors, and using them in styles.

Project Structuring: Experience in structuring React applications, including component, style, and resource organization.

Routing: Implementation of routing in React applications for multi-step registration processes.

State Tracking: Usage of services and routing for tracking user steps and states during the registration process.

Git: Using version control system for managing code changes.

Error Handling: Experience in identifying and resolving code errors, including technical issues like Webpack configuration.

Communication: Ability to formulate specific questions and requests for assistance, facilitating effective issue resolution.

Frontend Developer

from 05.2021 to 06.2023 (2 years 2 months)
Freelance, Запоріжжя (IT)

Developed and maintained web applications, implementing cutting-edge technologies in the frontend domain.

Participated in crafting user interfaces using HTML, CSS, and JavaScript, ensuring high responsiveness and aesthetic appeal.

Integrated APIs to facilitate efficient communication between frontend and backend systems.

Optimized web application performance and enhanced user experience.

Sales manager

from 09.2010 to now (15 years 6 months)
LLC JARS - 2010, Запоріжжя (Оптова торгівля, дистрибуція, імпорт, експорт)

Education

National University of Zaporizhzhia

Specialist, Olympic and professional sports. Coach, referee for swimming., Запоріжжя
Higher, from 2003 to 2008 (5 years)

Additional education and certificates

IMT Academy. Frontend Developer.

6 months

Softserve Academy, React practical course

3 months

Knowledge and skills

• HTML
• CSS
• JavaScript
• SASS
• React
• TypeScript
• Git
• Redux
• Node.js
• Bootstrap
• GitHub
• Figma
• WordPress
• Gulp
• Next.js
• React Native
• Express.js
• SQLite
• Adaptive layout
• Knowledge of BEM methodology
• REST API
• Responsive design
• NestJS

Language proficiencies

English — above average

Additional information

- Attention to detail
- Creative abilities
- Teamwork skills
- Ability to problem solving
- Results-oriented mindset
- Continuous desire to explore new
technologies and tools.

Eager to learn, grow, and apply new
technologies to achieve high-
performance results in frontend
development.
Portfolio:
https://github.com/serhiizalyvshyi