IT Service Providers

Onix-Systems

Ukrainian outsourcing company offering web, mobile and custom software development with US representatives

Write a review

Visit Website Get a quoteRequest a demo / quote Write a Review

Own this listing? Claim it

About Onix-Systems

Custom IT services from a Ukrainian firm

Onix is an IT services and consulting firm based in Ukraine, operating since 2000. It describes its work as custom IT services for businesses that need to build something new, upgrade an old system or scale a product quickly.

Product strategy, design and development

The list opens with planning work, taking a business idea and shaping it into a technical plan. It also covers UI and UX design, responsive web development that connects with existing systems, iOS and Android app development, and custom web and mobile platforms built around each client's business. The firm says its CRM and ERP work connects a client's tools and streamlines operations.

Travel software, legacy rescue and support

The company names travel and hospitality software as a specialty, including booking engines, reservation platforms and scheduling systems. It also offers legacy rescue, which means stabilizing and refactoring troubled products and getting them back on track, and it says some of its recovery workflows are AI-powered. Ongoing support covers monitoring, maintenance and round-the-clock attention to downtime and technical problems. The firm says most of its clients return with new projects.

AI-driven product work

The firm describes AI-powered engineering and product intelligence as part of its current offer. It says it helps clients build, stabilize or add AI to their products, and presents its engineering as work that makes software faster, smoother and more useful to the people who rely on it.

TrustList summary

Onix-Systems, now branded Onix, is a Ukrainian outsourcing firm that has operated since 2000. It provides offshore development, and its current site also covers product modernisation and AI-powered engineering.

Older profile text describes US representatives who review client communication and attend first launches, and says all projects are tested on staging servers before delivery.

What Onix-Systems does

Discovery and product strategy: turning a business idea into a technical plan.
UI and UX design: interfaces designed for easy use.
Web development: responsive sites connected to existing systems.
Mobile app development: iOS and Android apps.
Custom software, CRM and ERP: including booking engines and reservation platforms.
Legacy rescue: stabilising and refactoring troubled products.
Business process outsourcing: listed in older profile text.

Clients

Global businesses, with a stated focus on travel and hospitality software among other industries.

Key facts

Based in: Ukraine
Founded: 2000
Source protection: One-way NDAs and consulting contracts cover code and IP

Summary written by TrustList from the business's own published information, Nov 2026.

Categories & features

Onix-Systems rankings

Onix-Systems is ranked on 7 TrustList rankings: #1 on 1, #6 on 2, #15 on 1, #16 on 1, #36 on 1 and #38 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Onix-Systems has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

It service provider · 7 rankings

#1of 18
Android › Ukraine
It is one of 3 here listing outsourcing and one of 4 here listing IT outsourcing.
Of the 18 here, 51 also cover mobile app development and 50 also cover iOS app; 5 also work in Lviv and 4 also work in Kyiv.
Behind {IT}Prosteer.
#6of 164
Ukraine
It is one of 8 here listing quality assurance and one of 10 here listing IoT.
Its profile: “Onix is an IT services and consulting firm based in Ukraine, operating since 2000.”
Of the top 58 here, 43 also cover web development and 36 also cover web design; 2 also work in Dnipro, Ukraine and 2 also work in Vinnytsia, Ukraine.
Behind ELKO.
#6of 41
Outsourcing
It is one of 21 here listing PHP and one of 22 here listing mobile app development.
Its profile: “Onix-Systems, now branded Onix, is a Ukrainian outsourcing firm that has operated since 2000.”
Of the 41 here, 54 also cover IT outsourcing and 36 also cover IT services; 4 also work in Delhi NCR.
Behind Ibrowse Consultoria e Informática.
#15of 264
Android
It is one of 22 here listing software development and one of 54 here listing UI/UX design.
Its profile: “It also covers UI and UX design, responsive web development that connects with existing systems, iOS and Android app development, and custom web and mobile platforms built around each client's business.”
Of the top 100 here, 65 also cover eCommerce and 54 also cover UI/UX design; 7 also work in Ahmedabad and 5 also work in Pune.
#16of 47
Web development › Ukraine
It is one of 33 here listing iOS app and one of 39 here listing android.
Of the 47 here, 39 also cover android and 37 also cover e-commerce development; 2 also work in Kharkiv, Ukraine.
Behind Art Lemon, ahead of Lemeor.
#36of 556
Web development
It is one of 68 here listing web design.
Its profile: “It also covers UI and UX design, responsive web development that connects with existing systems, iOS and Android app development, and custom web and mobile platforms built around each client's business.”
Of the top 94 here, 2 also work in Indore, India.
#38of 357
Software development
It is one of 83 here listing web development.
Its profile: “- Based in: Ukraine - Founded: 2000 - Source protection: One-way NDAs and consulting contracts cover code and IP Ukrainian outsourcing company offering web, mobile and custom software development with US representatives”
Of the top 98 here, 36 also cover custom software development; 2 also work in Kolkata and 2 also work in Mumbai.
Behind 4Geeks Technologies, ahead of MotionMobs, LLC.