Kostiantyn Draliuk

Rising Codementor

US$8.00

For every 15 mins

ABOUT ME

Frontend-Heavy Full-Stack Engineer with 11 years of experience

Senior frontend engineer / full-stack developer with 11+ years of commercial experience, most recently leading frontend architecture for multi-tenant SaaS. My present stack centers on TypeScript, Vue, Svelte, and Node.js/Bun, and I'm comfortable stepping outside it whenever product needs or team conventions call for it.

I'm easy-going and collaborative, with a product-first mindset - I value solid delivery, efficient cross-team work, high execution quality, and long-term maintainability. Seeking a commitment with a strong team where I can drive continuous improvement and deliver lasting product value.

Ukrainian, English

Athens (+03:00)

Joined January 2026

EXPERTISE

6 years experience

10 years experience

10 years experience

6 years experience

6 years experience

3 years experience

2 years experience

REVIEWS FROM CLIENTS

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EMPLOYMENTS

Senior Lead Frontend Engineer

Proxify (Client at Platform)

2023-07-01-2025-12-01

Owned the frontend architecture of a multi-tenant SaaS platform - workspaces, RBAC, and real-time updates that the rest of the pr...

Owned the frontend architecture of a multi-tenant SaaS platform - workspaces, RBAC, and real-time updates that the rest of the product depended on
Set technical direction for the frontend codebase: defined architectural patterns, layer boundaries, and conventions so the team could ship features predictably as the product scaled
Built performance-sensitive data views and large-scale data visualizations on top of a big-data backend API
Developed and maintained a project-specific design system and component library, including complex multi-step form abstractions with deeply recursive validation reused across the application
Delivered end-to-end flows for authorization, onboarding, subscriptions, settings, and role-based views
Partnered cross-functionally with UI/UX and backend teams in a fast-paced startup environment - gathered requirements directly, scoped technical approaches, and produced implementation plans
Partnered with backend engineers on API contracts, validation schemas, and shared type systems to keep integration reliable as the product evolved
Built the end-to-end server-to-client validation layer, activaly contributed to the backend microservices development in Node.js (Encore.ts, Express) and Bun (Hono) as a full-stack, tightened the contracts between frontend and backend; defined style-guides
Established code review practices, maintained consistency across the teams, and mentored colleagues on architecture and best practices

HTML/CSS

Node.js

Git

HTML/CSS

Node.js

Git

Testing

WebSocket

Redis

TypeScript

Real-Time

Front-End

Full Stack

Big Data

BEM

React

Code Review

Startups

Leadership

Data Visualization

Project documentation

Code optimization

JavaScript

Multi-Tenancy

Requirements Gathering

Mentoring

Sentry

Writing Readable Code

Axios

State Management

ECharts

Svelte

API Integration

Storybook

Figma

Design Systems

RESTful API

Data Validation

Vue.js

SCSS

Component libraries

Vite

SvelteKit

AWS

Bunjs

SaaS

Drizzleorm

Tanstack

Zitadel

Requirement grooming

Software Engineer (Senior Frontend Developer, Vue.JS / Svelte)

DNV GL

2021-08-01-2023-01-01

Contributed to the development of the company’s microfrontends within a well-structured architecture, delivering features across ...

Contributed to the development of the company’s microfrontends within a well-structured architecture, delivering features across multiple environments using Vue.js, Svelte, and TypeScript
Contributed to shared component libraries by creating, improving, and refactoring reusable components
Collaborated with designers, backend engineers, and product managers to shape and deliver features that balanced user needs, technical constraints, and product goals in agile environment
Participated in code reviews and engineering discussions to maintain code quality and development standards
Participated in planning, requirement refinement, and delivery estimation to support predictable execution and cross-team alignment
Mentored colleagues in frontend development best practices and techniques

HTML/CSS

Node.js

Git

HTML/CSS

Node.js

Git

CSS3

Unit Testing

Testing

Azure

TypeScript

Front-End

E2E

Scrum

Enterprise Development

Code Refactoring

Code Review

Data Visualization

JavaScript

TypoScript

Multi-Tenancy

Writing Readable Code

Agile

State Management

Svelte

API Integration

Storybook

Figma

RESTful API

Data Validation

Vue.js

SCSS

Component libraries

Micro Frontends

Full-Stack / Frontend Developer

Freelance, Outsourcing

2016-09-01-2021-09-01

Delivered diverse projects for clients: CMS-based websites, premium CMS templates/addons, frontend enhancements and optimizations...

Delivered diverse projects for clients: CMS-based websites, premium CMS templates/addons, frontend enhancements and optimizations, and custom web applications from scratch
Built full-stack solutions using Vue.js, Laravel, Node.js, AdonisJs, and Express.js
Developed and maintained component libraries and design systems in Vue.js for efficient UI development across projects
Achieved measurable improvements in speed optimization, SEO, and quality audits, resulting in better site rankings and reduced load times
Identified and resolved performance bottlenecks, security vulnerabilities, and code maintainability issues
Worked with clients to gather requirements, provide estimates, and offer technical guidance
Managed projects using Jira, Azure, and YouTrack, tracking progress and providing regular client updates

HTML/CSS

PHP

SQL

HTML/CSS

PHP

SQL

Node.js

MySQL

Git

MongoDB

SEO

CSS3

Azure

Laravel

TypeScript

Jira

CMS

UI design

MVC

MariaDB

Symfony

Full Stack

Performance Bottlenecks

JavaScript

Email Templates

Trello

Writing Readable Code

AdonisJS

Performance Optimization

Figma

Vue.js

Express.js

PROJECTS

Multitenant Marketing Attribution Platform (B2B SaaS)

2025

At an early-stage multitenant SaaS startup, I led front-end architecture for a data-intensive product built on a large-scale big-data API...

At an early-stage multitenant SaaS startup, I led front-end architecture for a data-intensive product built on a large-scale big-data API. Working closely with the product owner, back-end engineers, and design, I helped turn business requirements into clear short- and long-term technical direction and aligned implementation through joint planning. I also built a scalable front-end from the ground up, introduced type-safe architecture, and developed a reusable component library and design system to support long-term growth. Beyond implementation, I helped establish engineering practices that improved delivery speed, code quality, and reliability across the team. I also contributed to back-end development, proactively identified bottlenecks early, and helped prevent technical decisions that could slow the product down later

Node.js

PostgreSQL

Unit Testing

Node.js

PostgreSQL

Unit Testing

Version control

WebSocket

Redis

TypeScript

Front-End

Framework

Full Stack

Big Data

Startups

Leadership

Data Visualization

Project documentation

JavaScript

Multi-Tenancy

Back-End

Design Architecture

Data structure

Sentry

Data analytics

Terraform

Webhooks

Rules Engine

Responsive Web Development

State Management

Svelte

Payment processing

Storybook

Figma

Design Systems

RESTful API

Data Validation

Vue.js

Rest api design

Component libraries

Technical documentation

SvelteJS

Vite

Micro Frontends

SvelteKit

SaaS

Marketing operations

Role Specific views

Onboarding process development

Permissions management