Viktor

VIKTOR SENYK
Front-End Developer | Full-Stack Developer
Lviv, Ukraine | [відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | LinkedIn | GitHub | Telegram

PROFESSIONAL SUMMARY

Front-End / Full-Stack Developer with 3.5+ years of commercial experience building and maintaining
production web applications. Strongest in React, TypeScript, and Next.js, with practical backend
experience in Java and Spring Boot. Delivered 200+ production features across an LMS/CRM platform,
including reusable UI architecture, REST API integrations, automated testing, and refactoring. AI-assisted
workflows reduced development time by around 30% on measured tasks.

CORE SKILLS

Frontend: JavaScript, TypeScript, React, Next.js, Redux Toolkit, Zustand, HTML5, CSS3, SCSS/Sass
UI & Styling: Material UI, Styled Components, Emotion, ApexCharts, Responsive UI, Figma/Pixel-Perfect
API & Forms: REST APIs, Axios, React Hook Form, API Integration
Testing: Jest, Cypress, JUnit, MockMvc
Architecture & Tools: Feature-Sliced Design (FSD-inspired), Git, Jira, Vite, ESLint, Prettier
Backend: Java, Spring Boot, SQL, Postman, Swagger
AI-assisted Development: OpenAI Codex, Cursor, ChatGPT

PROFESSIONAL EXPERIENCE

Gromcode
Middle Full-Stack Developer & Mentor
Jan 2025 - Aug 2026 - Full-time | Sep 2026 - Present - Part-time
Strong Junior Full-Stack Developer & Mentor
Jul 2023 - Dec 2024 - Full-time
Owned end-to-end frontend delivery for a production LMS/CRM platform, taking features from
business requirements and backend API contracts through implementation, testing, refactoring, and
pull requests.
Delivered 200+ production features, including around 50 major features, across admin, student,
and client-facing LMS/CRM areas. Built responsive, pixel-accurate Figma interfaces and independently
adapted mobile layouts when mockups were not provided.
Integrated AI-assisted workflows using OpenAI Codex, Cursor, and ChatGPT for code analysis,
implementation, refactoring, testing, debugging, and documentation, reducing development time by
around 30% on measured tasks.
Expanded into Java/Spring Boot backend development by building vacancy parsers for multiple
recruitment platforms, working with REST endpoints, DAO/SQL logic, debugging, and writing 247
JUnit/MockMvc tests across 41 endpoints.
Migrated the frontend codebase gradually to an FSD-inspired / domain-based architecture while
continuing feature development, improving code organization, separation of concerns, and
maintainability.
Built reusable admin table and form templates used across 50+ tables and forms, supporting
CRUD, filtering, sorting, pagination, and dynamic fields; also implemented around 20 analytics charts.
Standardized TypeScript entity architecture by aligning models with backend contracts and
introducing reusable admin/user type patterns, reducing duplication and improving consistency across
features.
Built Jest test suites for 200+ student programming tasks, typically with 10+ test cases per task,
and developed reusable test helpers; also created Cypress E2E tests for critical registration and login
flows.
Built complex create/edit form workflows, including a form with 10 static fields and 6 repeatable
dynamic field types, supporting validation, edit mode, API data transformations, and reusable field
components.

Collaborated directly with the Senior Backend Engineer and Product Owner on feature planning,
API contracts, and cross-layer debugging, helping deliver end-to-end functionality across frontend and
backend.
Mentored 100+ students through code reviews, technical guidance, mock interviews, documentation,
and code-quality guidelines; reviewed around 200 student projects and developed 30+ educational
frontend projects used in the learning program.

SoftLab Pro
Junior Front-End Developer
Feb 2023 - Jul 2023 - Full-time
Contributed to LiveScores, an early-stage sports live-score web platform, implementing assigned
frontend features and pages within an existing codebase.
Built pixel-accurate pages and reusable UI components from provided designs using React,
Next.js, TypeScript, Material UI, and Styled Components.
Worked within an existing React/Next.js codebase, following established project structure and
coding conventions while implementing and updating frontend functionality.
Worked alongside a more experienced Front-End Developer, refining implementations based on
project requirements and technical feedback.

EDUCATION

Gromcode
Intensive Full-Time Front-End Developer Program | 2022 - 2023
International Academy of Personnel Management
Master's Degree in Economics and Personnel Management | 2020 - 2022
Ternopil Ivan Puluj National Technical University
Bachelor's Degree in Automation and Computer-Integrated Technologies | 2015 - 2019

LANGUAGES

Ukrainian - Native
English - Intermediate (B1)
Russian - Fluent

REFERENCE
Professional reference from Gromcode's Director (Project Manager & Senior Backend Engineer) is
available upon request