About Petro
Software engineer specializing in React Native and modern JavaScript (Next.js, React, Node.js), with 4+ years building and
shipping scalable mobile and web products across fintech, e-commerce, fitness and IoT. Experienced team lead and mentor
who owns architecture and delivery end to end — from first idea to launch. Founder of TEOS IT, a small software studio
delivering complete web, mobile and AI products for international clients.
English
Fluent
Serbian
Native or bilingual
Remote only
Primarily works remotely
Experience
- TEOS ITFounder & Software EngineerTECHSeptember 2025 - Today (11 months)Novi Sad, SerbiaFounded a software studio building web, mobile and AI products end to end for international clients.Delivered complete products including Bukiraj, an online booking platform (web + mobile), Check Solar, a solar comparison web platform, and a fintech mobile app for real-time personal finance tracking.Lead product architecture, engineering and client delivery, coordinating a dedicated UI/UX designer and a small engineering team.Services: Web development, mobile development, backend development, AI integration, UI/UX & product design
- IT EngineSoftware Engineer / React Native DeveloperTECHDecember 2022 - Today (3 years and 8 months)Novi Sad, SerbiaBuild web and mobile products across retail, fitness and e-commerce domains.Developed a React Native fitness app: gym discovery, personal-trainer booking, session scheduling and personalized goals.Led a team of 8 on a large e-commerce project — architecture, task planning, code reviews and client communication from kickoff to deployment.Mentor interns and junior developers into production workflows.Stack: React Native, React.js, Next.js, Nest.js, TypeScript, Zustand, TanStack Query, Strapi CMS, Socket.io, Shopify, Stripe
- SmactySoftware EngineerJune 2022 - July 2023 (1 year and 1 month)Built an application for scanning and managing IoT devices, published to the App Store and Google Play.Implemented push notifications, deep linking, QR-code scanning, charts and multi-space switching.Stack: React Native, TypeScript, Firebase, Redux
Recommendations
Be the first to recommend Petro
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- Bachelor of Applied Information Technology and SystemsTech College of Applied Sciences, Novi Sad, Serbia2021