Семен

Semen Heraimovych
Full Stack Developer
Dnipro, Dnipropetrovs'ka oblast, Ukraine

I am 19 years old Junior Full-Stack Developer (Frontend & Backend) with strong teamwork skills. I combine
an academic background and training with experience in developing real-world platforms. I am a quick
learner, integrate easily into workflows, and am ready to deliver value within a dynamic IT company.

Links & Contacts

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Skills

• TypeScript • JavaScript • React.js • Next.js
• React Native • FSD architecture • Redux • RTK Query
• Node.js • Nest.js • Express.js • Prisma ORM
• Sqlite • Python • Git(bash/git hub) • Postman
• npm • Bun • CI/CD •

Professional Summary

Dedicated Full-Stack Developer with hands-on experience building production web and mobile applications.
Accustomed to structured Agile workflows, including active participation in daily stand-ups, close
collaboration with Project Managers, and efficient task execution and tracking via Jira. A proactive team
player and quick learner, focused on delivering high-quality results in a fast-paced engineering environment.

Work experience

CodeFather, Dnipro, Dec 2025 to Sept 2026
Front end developer
• Developed B2B and B2C solutions: Built and maintained 3 business applications and CRM platforms
using React, TypeScript, and Next.js, serving 500+ active users and improving overall system efficiency
by 25%.
• Engineered scalable UI: Created a core library of 40+ reusable components and integrated complex
APIs, reducing frontend development time for new features by ~30% and improving code maintainability.
• Delivered a manufacturing platform: Built a production automation and monitoring system consisting of
two interconnected Next.js applications, successfully processing over 10,000 real-time data events daily.
• Unified user workflows: Designed role-specific interfaces for 3 distinct user groups (including 200+
production employees and admins), streamlining operations and reducing manual reporting errors by
40%.

World IT Academy, Dnipro, Sept 2025 to Jun 2026
Mentor
• Taught Python fundamentals: Mentored students in core programming concepts, including syntax, data
types, control flow, functions, collections, and file handling.

• Explained OOP principles: Guided students through Object-Oriented Programming concepts such as
classes, encapsulation, inheritance, polymorphism, and abstraction.
• Conducted practical workshops: Designed coding exercises and hands-on sessions to reinforce
theoretical knowledge and build problem-solving skills.
• Provided individual mentoring: Conducted code reviews, helped students debug their solutions, and
provided 1-on-1 guidance.
• Enforced best practices: Introduced students to clean code principles and fundamental software
development standards.

Go Wombat, Dnipro, Dec 2025 to Jan 2026
Intern
• Developed full-stack features: Contributed to production-ready functionality using TypeScript, Node.js
(Express), and Prisma.
• Implemented real-time messaging: Built WebSocket-based communication supporting 200+ concurrent
connections.
• Optimized performance: Refactored API endpoints, successfully reducing average response times by
~30%.
• Managed databases & CI/CD: Built and migrated Prisma schemas, wrote unit/integration tests, and
configured automated builds/deployments using GitHub Actions.
• Collaborated with the team: Worked closely with designers and engineers to review PRs and enforced
code quality standards using linters and Husky pre-commit hooks.

Meduzen, Remote, Oct 2025 to Nov 2025
Intern
• Built backend architecture: Developed a quiz application backend from scratch using Python, FastAPI,
SQLAlchemy, and PostgreSQL.
• Developed RESTful APIs: Designed relational database models and implemented endpoints for
creating, managing, and retrieving quizzes and answers.
• Managed database migrations: Handled database schema changes and version control securely using
Alembic.
• Implemented core logic: Structured the backend into maintainable modules, adding robust data
validation and error handling.
• Ensured reliability: Tested key API endpoints and database workflows to guarantee system stability.

Education

University of Customs and Finance, Дніпро, 2026 to Present
Bachelor
Pursuing core studies in software engineering with coursework and projects focused on web and mobile
development, algorithms, and systems design.

FKZE PATON, Dnipro, 2022 to 2026
Professional student
Received diplomas upon completion of courses at the programming academy for successful completion.

Languages

Ukrainian, English

My projects

WORLDITSOCIALNETWORK
This project is a full-fledged social platform, where I acted as a Full-stack developer. On the backend, I used
the modern Bun runtime environment together with TypeScript and Express.js, which allowed me to achieve
high speed of the service. To interact with the SQLite database, I used Prisma ORM, designing a complex
architecture that supports a friends system, real-time private messages via WebSockets, as well as
publishing posts and photo albums. The front-end is developed on React Native with strict TypeScript typing,
which ensures the stability of the interface. I paid special attention to automation: I set up CI/CD via GitHub
Actions, integrated Husky for code review before commits, and implemented automatic version control using
Semantic Release.

LAZY BUNNY
As part of this project, I implemented a media platform for watching movies and TV series. I built a modular
backend structure on Node.js, separating the logic into separate services for managing movies, genres, and
user profiles. Using Prisma allowed me to flexibly manage relationships between entities, such as user
comments and favorites. On the client side, I implemented a dynamic interface in React, which provides
convenient content filtering and interactive interaction with the media library.

BYTEEX
This is a client application, where the main focus was on creating a reliable and fast interface. Working with
React and TypeScript, I developed a component system with an emphasis on type safety and code
modularity. The project implemented responsive layout using modern CSS methods, which guarantees
correct display on any device, and optimized rendering to improve the user experience.