Ваш членський план дозволяє мати не більше 0 підписок. Покращити рівень членства можна тут.
Успішно відписалися від
Помилка під час скасування підписки на користувача.
Ви успішно рекомендували
Помилка рекомендування користувача.
Щось пішло не так. Будь ласка, оновіть сторінку та повторіть спробу.
Електронну адресу успішно верифіковано.
Kostiantyn H.
@holovanych7
5,0
1
2,0
2,0
100%
✅Mobile&Web✅Game development✅Python✅OpenAI✅AI/ML
$30 USD / год.
・
Ukraine (10:41 пп)
・
На сайті з грудня 4, 2024
$30 USD / год.
・
✔ Delivering High-Performance Cross-Platform and Web Applications
With over 4 years of hands-on experience with React Native, Next.js, Node.js, Three.js and Machine Learning, I specialize in building robust, user-friendly mobile and web applications that meet user needs, focusing on performance, scalability and innovative design.
✔ Core Expertise:
✅ Mobile App Development - React Native for seamless iOS and Android apps.
✅ Web Development - Next.js for lightning-fast, SEO-friendly web applications.
✅ Backend Development - Node.js for building efficient, scalable and fast backend solutions.
✅ 3D Visualization - Three.js for immersive 3D web experiences.
✅ AI Integration - implementing machine learning for intelligent data analysis and user interaction.
✔ Special Skills:
End-to-end mobile and web application development.
Optimize app and website performance for rapid responsiveness.
Implement advanced state management (Redux, MobX, Context API).
Integrate third-party APIs and build custom solutions.
Create pixel-perfect UI/UX designs based on Figma/Sketch concepts.
Advanced user authentication, payment gateway integration, and security.
✔ Why work with me
I believe that every idea deserves technical excellence and a thoughtful approach. I focus on developing scalable solutions tailored to your unique goals using creativity, technical expertise, and professionalism. Whether you are building a product for a startup, scaling an existing app, or experimenting with innovative technology solutions, I am here to bring your vision to life.
✔ Proven Success:
✅ Reduced app load time by 30% through optimization strategies.
✅ Provides customized solutions for industries such as e-commerce, healthcare, finance, AI/ML, and social media.
✔ Let's improve your vision!
Are you ready to build a next-generation app or integrate innovative technologies into your business? Whether it's mobile, web, or machine learning-based projects, I'm ready to help you turn your idea into reality.
✔ Send me a message today! Let's collaborate and bring your vision to life.
Kostiantyn exceeded my expectations on my React Native project. :)
He demonstrated a strong understanding of the framework and delivered high-quality results promptly. His communication was excellent; he kept me updated throughout the process and was always open to feedback. Kostiantyn's attention to detail and problem-solving skills made the collaboration smooth and enjoyable.
I highly recommend him for any development work and would gladly work with him again!
Delivered high-quality web applications through robust full-stack development practices.
Mentored junior team members, fostering a collaborative and efficient development environment.
Enhanced cloud infrastructure by optimizing APIs hosted on Azure Kubernetes Services (AKS).
Resolved performance bottlenecks, ensuring smooth application performance.
remote, Ukraine
трав., 2024 - лист., 2024
•
5 months, 30 days
Principal Software Engineer
лист., 2023 - квіт., 2024
•
5 months
SoftServe
лист., 2023 - квіт., 2024
•
5 months
Spearheaded the design and development of advanced features for enterprise-level applications.
Conducted unit testing with Jest and integrated end-to-end testing with Cypress, achieving 80%+ code coverage.
Implemented Git-based CI/CD pipelines, streamlining the testing and deployment processes.
Enhanced UI/UX design based on Figma mockups for client-facing portals.
Developed and maintained 200+ reusable components with Storybook, improving cross-team efficiency.
remote, Ukraine
лист., 2023 - квіт., 2024
•
5 months
Освіта
State University 'Lviv Polytechnics'
2019 - 2023
•
4 years
bachelor of computer science
Ukraine
2019 - 2023
•
4 years
Кваліфікації
React Native certification
2020
HackerRank
Received React Native Certification
2020
React certification
2020
HackerRank
Received React certification at HackerRank
2020
Запрошення успішно надіслане!
Дякуємо! Ми надіслали на вашу електронну пошту посилання для отримання безкоштовного кредиту.
Під час надсилання електронного листа сталася помилка. Будь ласка, спробуйте ще раз.