What technologies does OSSystem Ltd use?

OSSystem Ltd uses Cloudflare DNS, Amazon SES, MailChimp SPF, Amazon AWS, CloudFlare Hosting. View their full technology stack — including all 22 detected tools — on StackWho.

Who is the Chief Technology Officer of OSSystem Ltd?

Serhii Semko is the Chief Technology Officer at OSSystem Ltd. Get verified contact information on StackWho.

Who is the VP of Software Engineering of OSSystem Ltd?

Vadim Zakharkin is the VP of Software Engineering at OSSystem Ltd. Get verified contact information on StackWho.

Where is OSSystem Ltd located?

OSSystem Ltd is based in Odessa Oblast, Ukraine.

OSSystem Ltd

os-system.com

information technology & services

os-system.com

Odessa Oblast, Ukraine

11-50 employees

LinkedIn Profile

About OSSystem Ltd

software development, software architecture, outsourcing, outstaffing, mobile development, replatforming, reactjs, react native, extjs, nodejs, php, symfony, aws, startups, java, dedicated team, qa, cross platform development, ui, ux design

OSSystem Ltd's Tech Stack

Decision Makers at OSSystem Ltd

3 contacts

Serhii Semko

Chief Technology Officer

s***@ossystem1f.com Sign up to view

Vadim Zakharkin

VP of Software Engineering

v***@os-system.com Sign up to view

Oleh Sieroochenko

CEO

s***@utilitium.com Sign up to view

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22 technologies detected · 3 decision makers · Emails available

Sales Outreach Angle

HubSpot users typically run inbound-led sales motions. Products that integrate with HubSpot (email automation, CRM enrichment, ABM platforms) are natural fits.

OSSystem Ltd's Position in the StackWho Database

• OSSystem Ltd is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 66 companies in Odessa Oblast are in the StackWho database.
• 74,148 information technology & services companies are in the 11-50 employee range (same size as OSSystem Ltd).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does OSSystem Ltd use?

OSSystem Ltd uses Cloudflare DNS, Amazon SES, MailChimp SPF, Amazon AWS, CloudFlare Hosting, Outlook, and 16 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at OSSystem Ltd?

StackWho has verified email addresses for 3 decision makers at OSSystem Ltd. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach OSSystem Ltd directly for sales, recruiting, or partnerships.

What industry is OSSystem Ltd in?

OSSystem Ltd operates in the information technology & services industry, headquartered in Odessa Oblast, Ukraine. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export OSSystem Ltd's contact data?

Yes. StackWho Pro members can export decision maker contact data for OSSystem Ltd and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.