Named delivery owner
Architecture and delivery responsibility remain clear from discovery through release and operation.
About Sellbyx
A software engineering company for complex product and platform work.
Sellbyx works with international product companies that need experienced technical judgment and hands-on delivery from the same team.
Why Sellbyx
Complex products need end-to-end technical ownership.
Sellbyx is a new Ukrainian software engineering company built by a team with a shared delivery history across complex international products. The company is new; the delivery team and its track record are established.
We bring together the disciplines a product needs and stay accountable for how they fit. Clients can entrust Sellbyx with a complete initiative or bring our team into an existing organization to take ownership of a difficult product or system.
Delivery is remote, with working hours arranged to provide useful overlap with the client team. English is the working language. Contracts are issued through a Ukrainian legal entity.
Delivery model
Team structure follows the product risk.
Every engagement has a named delivery owner, a visible technical process and a team shaped by the actual system.
Specialist depth when needed
Backend, frontend, mobile, data, cloud, QA, UX and security expertise is added where the work requires it.
One engineering system
Shared standards for code, testing, observability, documentation and handover keep the product coherent.
Operating principles
How the company makes difficult work safer.
Production evidence guides technology choices
Profiles, traces, query plans, user behavior and business constraints shape architecture decisions.
Senior ownership stays visible
The people accountable for the system remain present through delivery and production feedback.
Handover is part of the design
Documentation, observability and understandable boundaries prevent dependency on any one vendor or person.
Leadership
Vadim Zhuk, Founder and CTO
Vadim defines Sellbyx’s engineering standards and supports decisions with the highest technical or commercial risk. He has more than 14 years of software engineering experience and five years in CTO roles for companies operating licensed fintech and trading platforms.
He sets the engineering standard, while the Sellbyx team assigned to each engagement owns delivery.
Direct access to the delivery team