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Kateryna KrasnovaKK

Kateryna Krasnova

JavaScript & TypeScript Software Engineer

โ‚ฌ260/day
Dortmund, DE
3-7 years

Average response time: 1 hour

About Kateryna

Hi,

Iโ€™m a ๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜, ๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜ ๐—ก๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ & ๐—ก๐—ผ๐—ฑ๐—ฒ.๐—ท๐˜€ ๐—ณ๐˜‚๐—น๐—น-๐˜€๐˜๐—ฎ๐—ฐ๐—ธ ๐—ฑ๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—ฒ๐—ฟ with ๐Ÿฐ ๐˜†๐—ฒ๐—ฎ๐—ฟ๐˜€ ๐—ผ๐—ณ ๐—ฒ๐˜…๐—ฝ๐—ฒ๐—ฟ๐—ถ๐—ฒ๐—ป๐—ฐ๐—ฒ building scalable, production-ready web and mobile applications.

๐Ÿ› ๏ธ ๐—”๐—ฟ๐—ฒ๐—ฎ๐˜€ ๐—ผ๐—ณ ๐—ฒ๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜๐—ถ๐˜€๐—ฒ:

๐Ÿ”น ๐—˜๐—ป๐—ฑ-๐˜๐—ผ-๐—˜๐—ป๐—ฑ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜ โ€“ Iโ€™ve worked on products from early prototypes to production-ready systems. I try to balance fast delivery with clean code and maintainability to support long-term growth.
๐Ÿ”น ๐— ๐—ผ๐—ฑ๐—ฒ๐—ฟ๐—ป ๐—ช๐—ฒ๐—ฏ ๐—”๐—ฝ๐—ฝ๐—น๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ โ€“ I enjoy building modern web apps with React and Next.js. My goal is to make them fast, intuitive, and helpful for both users and teams.
๐Ÿ”น ๐— ๐—ผ๐—ฏ๐—ถ๐—น๐—ฒ ๐—”๐—ฝ๐—ฝ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜ โ€“ Iโ€™ve built cross-platform apps with React Native and Expo, helping teams reach iOS and Android users without managing two separate codebases.
๐Ÿ”น ๐—ฆ๐—ฒ๐—ฟ๐˜ƒ๐—ฒ๐—ฟ ๐——๐—ฒ๐˜ƒ๐—ฒ๐—น๐—ผ๐—ฝ๐—บ๐—ฒ๐—ป๐˜ โ€“ Iโ€™ve designed backends with Node.js and NestJS that handle real workloads. I care about making them clear, efficient, and easy to maintain.
๐Ÿ”น ๐—”๐—ฃ๐—œ ๐——๐—ฒ๐˜€๐—ถ๐—ด๐—ป & ๐—œ๐—ป๐˜๐—ฒ๐—ด๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป โ€“ Iโ€™ve created and integrated REST and GraphQL APIs that helped speed up frontend development and made communication between services smoother.
๐Ÿ”น ๐—ฆ๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ถ๐˜๐˜† ๐—•๐—ฒ๐˜€๐˜ ๐—ฃ๐—ฟ๐—ฎ๐—ฐ๐˜๐—ถ๐—ฐ๐—ฒ๐˜€ โ€“ I try to follow good security practices throughout the stack โ€” from auth to data validation โ€” to help protect user data and reduce risks early on.
๐Ÿ”น ๐——๐—ฎ๐˜๐—ฎ๐—ฏ๐—ฎ๐˜€๐—ฒ ๐—”๐—ฟ๐—ฐ๐—ต๐—ถ๐˜๐—ฒ๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ โ€“ Iโ€™ve worked with PostgreSQL and MongoDB, focusing on building reliable and scalable data models that stay performant over time.
๐Ÿ”น ๐—ฅ๐—ฒ๐—ฎ๐—น-๐—ง๐—ถ๐—บ๐—ฒ ๐—™๐—ฒ๐—ฎ๐˜๐˜‚๐—ฟ๐—ฒ๐˜€ โ€“ Iโ€™ve implemented real-time features with WebSockets and Socket.IO, like chat or live updates, to make apps feel more responsive and interactive.
๐Ÿ”น ๐—”๐—œ & ๐—”๐˜‚๐˜๐—ผ๐—บ๐—ฎ๐˜๐—ถ๐—ผ๐—ป โ€“ Iโ€™ve experimented with GPT and other tools to automate parts of workflows and add smart features that improve UX and save time.
  • English

    Fluent

  • Ukrainian

    Native or bilingual

  • Russian

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • SysGears
    JavaScript & TypeScript Software Engineer
    July 2022 - Today (3 years and 11 months)
    - Expanded domain expertise beyond healthcare by contributing to projects in finance, AI, and other industries
    - Translated business requirements into efficient, scalable software solutions
    - Designed and developed client-side applications using React, NextJS
    - Built cross-platform mobile apps with React Native, focusing on performance and user experience
    - Developed and maintained server-side APIs using Node.js, NestJS, and Express
    - Contributed to AI-based features such as chatbots, automated email responders, and voice call processing tools
    - Collaborated directly with stakeholders and cross-functional teams to ensure smooth project delivery
    - Continuously improved code quality through peer reviews and by following best development practices
    JavaScript Express React.js Node.js React Native
  • Freelance
    JavaScript Software Engineer
    April 2021 - June 2022 (1 year and 2 months)
    - Designed and developed a healthcare web application based on real medical workflows
    - Collaborated with healthcare professionals to define features and improve usability
    - Built the product from scratch: frontend, backend, UI/UX, and infrastructure
    - Focused on code quality, ease of maintenance, and basic industry standards (e.g., HIPAA)
    - Gained experience with full-cycle product development in a real-world domain
    - Applied the latest JavaScript frameworks and best practices throughout the project
  • Medical Center "Medical Plaza"
    MD - Doctor of Medicine
    January 2018 - January 2021 (3 years)
    - Managed full cycle of outpatient care: from patient intake and diagnosis to treatment and follow-up
    - Participated in the digital transformation of the clinic, including the transition from paper to digital records
    - Collaborated with technical staff to improve documentation workflows and patient data accuracy
    - Introduced simple automation tools (e.g., electronic templates, digital scheduling) to streamline operations
    - Took initiative in training staff on digital tools and improving adoption of healthcare software

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Education

  • Master of Medicine
    Dnipro State Medical University
    Master of Medicine

Certifications

Skill set

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