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Kosta Firsov Email & Phone Number

Principal Architect at Sphera
Location: Toronto, Ontario, Canada 9 work roles 1 school
1 work email found @sphera.com LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email

Work email k****@sphera.com
LinkedIn Profile matched
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Current company
Sphera
Role
Principal Architect
Location
Toronto, Ontario, Canada
Company size
1002 employees

Who is Kosta Firsov? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

Kosta Firsov is listed as Principal Architect at Sphera, a with 1002 employees, based in Toronto, Ontario, Canada. AeroLeads shows a work email signal at sphera.com and a matched LinkedIn profile for Kosta Firsov.

Kosta Firsov previously worked as Principal Architect at Ihs and Software Development Team Lead at Ihs. Kosta Firsov holds Bachelor Of Applied Computer Science, Co-Op Option from Ryerson University.

Company email context

Email format at Sphera

This section adds company-level context without repeating Kosta Firsov's masked contact details.

{first_initial}{last}@sphera.com
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AeroLeads found 1 current-domain work email signal for Kosta Firsov. Compare company email patterns before reaching out.

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Profile bio

About Kosta Firsov

Web application developer on the Java and .Net platforms. Experience building rich web-based hierarchical data editor with online collaboration features. Good knowledge of database systems. Working on the workflow driven business process modeling application.Specialties: Java, DOM, HTML, JSP, Velocity, Javascript, MS SQL Server, Oracle, PostgreSQL, Tomcat, Jboss, Jetty, DWR, XPath, XQuery, Spring Security(Acegi), JasperServer

Listed skills include Jsp, Tomcat, Javascript, Java, and 35 others.

Current workplace

Kosta Firsov's current company

Company context helps verify the profile and gives searchers a useful next step.

Sphera
Sphera
Principal Architect
chicago, illinois, united states
Website
sphera.com
Employees
1002
AeroLeads page
Company profile
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9 roles

Kosta Firsov work experience

A career timeline built from the work history available for this profile.

Principal Architect

Current
Sphera

Toronto, Canada Area

Sep 2016 - Present

Principal Architect

Ihs

Toronto, On, Canada

Mar 2014 - Sep 2016

Software Development Team Lead

Ihs

Toronto, On, Canada

Mar 2011 - Mar 2014

Senior Software Developer

Dyadem International

Toronto, On, Canada

Apr 2007 - Mar 2011

Software Developer

Dyadem International

Toronto, On, Canada

Apr 2006 - Apr 2007

Internet Developer

Masterfile

Toronto, On, Canada

Jun 2004 - Mar 2006

Co-Op Software Tester

Masterfile

Toronto, On, Canada

Jun 2003 - Jun 2004
Team & coworkers

Colleagues at Sphera

Other employees you can reach at sphera.com. View company contacts for 1002 employees →

JB Jérémy Bonvoisin Jérémy Bonvoisin Colleague at SpheraGreater Bremen Area, Germany View → RV Roja V Roja V Colleague at SpheraBengaluru, Karnataka, India View → RK Rachna Kangale Rachna Kangale Colleague at SpheraPune, Maharashtra, India View → KJ Keerthanapriya Jayaprakash Keerthanapriya Jayaprakash Colleague at SpheraTiruvallur, Tamil Nadu, India View → DC Diego Cuevas Sanchez Diego Cuevas Sanchez Colleague at SpheraNorman, Oklahoma, United States View → LB Lewis Bond Lewis Bond Colleague at SpheraWorcestershire, England, United Kingdom View → FM Farrah Moore Farrah Moore Colleague at SpheraSmyrna, Tennessee, United States View → LG Laura Guillon Laura Guillon Colleague at SpheraFrance View → MD Marcelo Duarte Vaz Pereira Marcelo Duarte Vaz Pereira Colleague at SpheraLiverpool, England, United Kingdom View → LS Laurie Soha Laurie Soha Colleague at SpheraPhoenix, Arizona, United States View →
1 education record

Kosta Firsov education

FAQ

Frequently asked questions about Kosta Firsov

Quick answers generated from the profile data available on this page.

What company does Kosta Firsov work for?

Kosta Firsov works for Sphera.

What is Kosta Firsov's role at Sphera?

Kosta Firsov is listed as Principal Architect at Sphera.

What is Kosta Firsov's email address?

AeroLeads has found 1 work email signal at @sphera.com for Kosta Firsov at Sphera.

Where is Kosta Firsov based?

Kosta Firsov is based in Toronto, Ontario, Canada while working with Sphera.

What companies has Kosta Firsov worked for?

Kosta Firsov has worked for Sphera, Ihs, Dyadem International, Masterfile, and Canadian Securities Institute (Csi).

Who are Kosta Firsov's colleagues at Sphera?

Kosta Firsov's colleagues at Sphera include Jérémy Bonvoisin, Roja V, Rachna Kangale, Keerthanapriya Jayaprakash, and Diego Cuevas Sanchez.

How can I contact Kosta Firsov?

You can use AeroLeads to view verified contact signals for Kosta Firsov at Sphera, including work email, phone, and LinkedIn data when available.

What schools did Kosta Firsov attend?

Kosta Firsov holds Bachelor Of Applied Computer Science, Co-Op Option from Ryerson University.

What skills is Kosta Firsov known for?

Kosta Firsov is listed with skills including Jsp, Tomcat, Javascript, Java, Postgresql, Oracle, Sql Server, and Hibernate.

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