Demvamko AndrijaKovac
@demvamkoandrijakovac
Lead software developer specializing in web, game, and infrastructure systems.
SerbiaWhat I'm looking for
I am a versatile lead software developer with deep experience across game, web, application, infrastructure, and cryptography development. I have a proven track record of architecting enterprise solutions and leading development teams from concept to deployment.
As a Top Rated Plus freelancer on Upwork, I delivered enterprise solutions and 20+ Chrome extensions for Fortune 500 and startup clients, and I led teams using React, Next.js, and Node.js while establishing coding standards and mentoring junior developers.
I architected and deployed a Chrome extension managing 500,000+ students for Singapore's national education system, building real-time monitoring with WebRTC, screen sharing, file transfer, web filtering, and classroom management features.
I’ve improved build pipelines and developer productivity—reducing Pagan Online build times from 4 hours to 40 minutes—rewriting legacy systems and creating custom tooling, while also bringing leadership experience as a former CTO and team lead.
Experience
Work history, roles, and key accomplishments
UPDelivered enterprise solutions and 20+ Chrome extensions for Fortune 500 and startup clients, achieving Top Rated Plus status and leading teams from discovery to deployment.
Software Engineer — Chrome Extension
Mobile Guardian
Jan 2020 - Jan 2021 (1 year)
Architected and deployed a Chrome extension protecting 500,000+ students in Singapore, added WebRTC video, screen sharing, file transfer, web filtering, and classroom management features.
Language System Developer
MadHead Games
Jan 2019 - Jan 2020 (1 year)
Architected and implemented a distributed CI/CD system that reduced Pagan Online build times from 4 hours to 40 minutes and rewrote legacy build tooling to improve productivity by ~40%.
CTO / Team Lead
Niviem Software
Jan 2017 - Jan 2018 (1 year)
Led engineering and product development, building technical expertise, organizational processes, and team growth while managing company-level strategy and client engagements.
Education
Degrees, certifications, and relevant coursework
Niviem (education / engagements)
Data Science
2022 - 2023
Engaged in Data Science-related education and projects across multiple engagements.
Technical High School 9 May, Bačka Palanka
Secondary Education Diploma, Electrotechnician of Information Technologies
2017 - 2018
Attended technical high school focusing on electrotechnician and information technologies.
FSFaculty of Technical Sciences, University of Novi Sad
Bachelor of Science, Information Technologies
2013 - 2017
Completed studies at the Faculty of Technical Sciences developing technical expertise and leadership through entrepreneurship and team management.
Tech stack
Software and tools used professionally
Availability
Location
SerbiaAuthorized to work in
Website
demvamko.github.ioJob categories
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