Custom software development company

At Yelk, we specialize in delivering custom software development services to start-ups and businesses of all sizes worldwide. With a proven track record of building top-quality web platforms, mobile apps, e-commerce solutions, and software products, our team of IT specialists ensures that your specific needs are met with excellence.

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Our services

What we offer and deliver efficiently

Front-End Development

We develop intuitive front-end interfaces based on best practices in web development. The use of cutting-edge technologies and frameworks ensures fast loading speeds, convenient navigation, and a flawless user experience.
Back-End Development

We build reliable and scalable backend solutions using modern architectural approaches and technologies. Maximum performance, data security, and stable system operation under high loads are ensured.
Web Application

We build powerful web applications with a well-thought-out server architecture that delivers speed. Optimized back-end solutions guarantee high performance, data security, and incremental development. This allows businesses to operate without interruptions even when the load increases.
WordPress Development

We can help you build flexible server-side solutions for WordPress, including plugins, API integrations, and load speed optimization. A properly developed WordPress theme back end ensures the reliable operation of the future website. Where necessary, we develop custom plugins, third-party solutions, and APIs. We also build websites with a clean SEO structure, semantic markup, and properly organized content. This supports both traditional search visibility and AEO (Answer Engine Optimization), helping your content appear more accurately in search results, AI-generated answers, and emerging discovery platforms.
UI/UX Design

With Yelk, you can be sure to get a compelling and state-of-the-art design that will provide a smooth digital experience for your users.
SPA Development

We build fast, interactive, and feature-rich single-page applications with seamless user experiences
Dedicated Team

Maintain better control of the development process by hiring a dedicated team of skilled professionals, ensuring the most consistent results.
Web Development

End-to-end services to build web-based applications and custom websites that are specially designed to meet the needs of a given business.
PWA App Development

We offer comprehensive PWA development services by creating applications that are optimized for performance, security, and scalability.
MVP for startups

Our experienced designers and software engineers will help you build an MVP to validate your idea in the most efficient way.
Product discovery

As part of this service, we conduct a thorough analysis of both business and technological aspects of your idea and create a viable product prototype.

WHY YELK

Building Solutions that will unlock your business potential

From its beginnings in 2015 as a small agency, Yelk has managed to expand steadily by employing the right team members and cultivating their skills. Today, our Ukraine-based team comprises 34 members, including strong middle and senior software engineers, business analysts, and product designers.

We make it our mission to stay on the cutting edge of emerging technologies and frameworks. Our team’s extensive industry knowledge and product-oriented thinking make us the perfect choice for your custom software development needs.

MORE ABOUT US

OUR JOURNEY

We’ve got a proven track record driving growth for our clients worldwide

10+

years

Since 2015 we have been continuously growing and strengthening our competence.
30+

members

We’ve put together a well-coordinated team of software engineers, UI/UX designers, project managers, and more.
220+

projects

From website revamping to highly scalable web application development, we delivered solutions that met the highest quality standards.
14+

domains

By combining technical skills with industry-specific experience, we created solutions in various domains.

SUCCESS CASES

Discover our portfolio

Foojay
Foojay
- Corporate
Foojay

view case
XSYS Global
XSYS Global
- E-commerce
XSYS Global

view case
Precision Watches
Precision Watches
- E-commerce
Precision Watches

view case
OctoFrost
OctoFrost
- Corporate
OctoFrost

view case

SKILLS AND TOOLS

Our technology stack

With years of experience under our belt, we’ve put together a selection of tools and technologies that enable us to develop top-notch custom solutions that fulfill your business goals.

Rest API
ACF
NginX

Shopify
Cloudflare
.Net

Elasticsearch
Firebase
AWS

MongoDB
Node.js
PHP

Git
GraphQL
SQL

PostgreSQL
Kinsta
SiteGround

WP Engine
WP Rocket
Wordpress

WooCommerce
Multilingual Press
WPML

Wordfence
Laravel
Voyager

Backpack
MySQL

Rest API
ACF
NginX
Shopify
Cloudflare
.Net
Elasticsearch
Firebase
AWS
MongoDB
Node.js
PHP
Git
GraphQL
SQL
PostgreSQL
Kinsta
SiteGround
WP Engine
WP Rocket
Wordpress
WooCommerce
Multilingual Press
WPML
Wordfence
Laravel
Voyager
Backpack
MySQL

Styled-Components
TypeScript
React Router

Redux
Backbone.js
React Native

Webix
Angular
Git

Liquid
SASS
Vue.js

React.js
Next.js
Nuxt

Chart.js
Tailwind
Bootstrap

Inertia.js
JavaScript
CSS

HTML

Styled-Components
TypeScript
React Router
Redux
Backbone.js
React Native
Webix
Angular
Git
Liquid
SASS
Vue.js
React.js
Next.js
Nuxt
Chart.js
Tailwind
Bootstrap
Inertia.js
JavaScript
CSS
HTML

Android Studio
LambdaTest
LoadRunner

Jam
Cucumber
TestRail

Docker
Selenium Webdriver
Qase

MySQL
Jmeter
Katalon

Jenkins
Browserstack
Charles Proxy

Postman

Android Studio
LambdaTest
LoadRunner
Jam
Cucumber
TestRail
Docker
Selenium Webdriver
Qase
MySQL
Jmeter
Katalon
Jenkins
Browserstack
Charles Proxy
Postman

Plerdy
Google Analytics
Hotjar

After Effects
Photoshop
Illustrator

Sketch
Invision Studio
Adobe XD

Figma
Moqups
Lucidchart

Balsamiq

Plerdy
Google Analytics
Hotjar
After Effects
Photoshop
Illustrator
Sketch
Invision Studio
Adobe XD
Figma
Moqups
Lucidchart
Balsamiq

INDUSTRIES

Industries we work with

We have in-depth industry expertise in finance, healthcare, logistics, education, and hospitality, delivering solutions that contributed to smooth tech adoption. But our experience is not limited to these sectors, as we have worked with companies from more than 30 other industries worldwide.

Healthcare and Fitness
FinTech
Education and EdTech
Manufacturing
Logistic and Transport
Travel and Hospitality

OUR CLIENTS

Achieving great outcomes together

While working with businesses of varying sizes, we employ the right mix of resources to suit a particular stage of growth and budget. From fledgling start-ups focused on their minimum viable product, to well-established organizations actively scaling and optimizing processes.

Testimonials

Client Success Stories

We strive to foster trustful relationships by providing value that lasts. It is based on our clients’ achievements that we define our success. Take a look at how our team has contributed to the customer's progress.

XSYS Global

We received very good feedback from our management about the look and functionality of the new website. There's a day and night difference between what was there and what we have today.

We received very good feedback from our management about the look and functionality of the new website. There's a day and night difference between what was there and what we have today.

Ozan Ozturk

Global Marketing & Communications Manager Flint Group

VIEW PROJECT
Heitech Software Solutions

Communication was smooth, and I never had to repeat myself. YELK helped us launch on schedule, and what really stood out was how well they understood what we were aiming for right from the start, things moved forward without delays or confusion.

Communication was smooth, and I never had to repeat myself. YELK helped us launch on schedule, and what really stood out was how well they understood what we were aiming for right from the start, things moved forward without delays or confusion.

Tom Heiber

CEO
Precision Watches, Luxury Retail Website

Working with YELK team was a great experience. They were professional, got the job done right, and their ideas truly added value to our business. I highly recommend them.

Working with YELK team was a great experience. They were professional, got the job done right, and their ideas truly added value to our business. I highly recommend them.

Sergey Taver

Marketing Director

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Foojay

We hired Yelk to build a fully custom WordPress portal for our online community from the ground up. They did an excellent job, everything works great, and they’ve been a pleasure to work with. I highly recommend them!

We hired Yelk to build a fully custom WordPress portal for our online community from the ground up. They did an excellent job, everything works great, and they’ve been a pleasure to work with. I highly recommend them!

Geertjan Wielenga

Senior Director of Open Source Projects

VIEW PROJECT