Freelancer profile translated to English.

Description

CTO & Software Engineer, I support companies that wish to launch or strengthen their digital product. I am involved in both technical vision and concrete execution: architecture, development, performance, security, mobile, backend… everything needed to advance a product quickly and cleanly.

What I bring: a simple, effective, and business-oriented approach. No unnecessary complexity; just reliable, maintainable solutions aligned with your objectives. I can take charge of the entire technical aspect or work hand-in-hand with your team.

I generally intervene on:

- creation of iOS/Android mobile applications

- back-end development & APIs

- structuring of MVPs and product roadmaps

- improvement and optimization of an existing product

- global technical support (CTO as a Service)

Need a CTO / Software Engineer to advance your product? Come discuss it in private message 👋

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent
Serbian
Native or bilingual

Workplace preferences

Can work on-site

Paris (up to 10km)

Talk to Era
Lead & Tech Builder of Era
HEALTH AND WELLNESS
October 2025 - Today (8 months)
Paris, France
I lead the development of Era, **iOS & Android mobile application**, with overall responsibility for the architecture, security, UX, and quality of the product. The work is done in close collaboration with a Product Manager to define the vision, structure the MVP, and establish a coherent roadmap.

Main areas of work
creation of the app from A to Z (React Native / Expo)
authentication (email, Google, Apple) & security
design system, navigation, fluid UX
serverless backend & OTA updates
MVP scoping and continuous prioritization with the Product Manager

The objective: to turn an idea into a solid, performant, and scalable application.
React Native Typescript UX/UI PostgreSQL Amazon Web Services
moonz
CTO
SOCIAL NETWORKS
June 2023 - September 2025 (2 years and 3 months)
Paris, France
Moonz is a dating app based on astrology, combining personalized matching, real-time chat, and premium features.

As CTO, I defined the architecture, led technological choices, structured the team, and implemented an infrastructure capable of supporting rapid growth, while ensuring stability, performance, and delivery pace.

Key results:
Design of an architecture intended to **support growth**, avoid bottlenecks, and guarantee a fluid experience in all circumstances.
Implementation of a scalable stack (modular, service-oriented) adapted to a mass-market mobile product. With a **modular architecture**, capable of absorbing high traffic peaks.
Construction of a **complete CI/CD pipeline**, deployment automation, monitoring, and continuous optimization of cloud costs.
Management of a **tech team of 4 people**, delivery organization, roadmap structuring, and implementation of best practices.

Results achieved
200k+ downloads
Up to 2.5k daily active users
Full monetization (subscriptions + in-app purchases) integrated and optimized
An architecture capable of absorbing significant traffic peaks without loss of quality

I contributed to transforming an idea into a widely used product, while ensuring stability, performance, and growth capacity.
Tech Lead Amazon Web Services Application Mobile Définition et suivi des indicateurs (KPI) Gestion de projet
L41 Studio
Web3 & Full-Stack Developer
CONSULTING AND AUDITS
November 2021 - April 2022 (6 months)
Paris, France
L41 Studio was an agency specializing in digital, branding, and Web3 project support. We helped brands integrate innovative experiences based on the Ethereum ecosystem, whether for NFT launches, token-gated solutions, or custom digital products.

Within the agency, I was responsible for technical development. I was involved in the entire production cycle: design, development, blockchain integration, and deployment of Web3 and Web2 solutions.

Main missions
Development of Ethereum smart contracts (Solidity): ERC-20, ERC-721, ERC-1155, custom mechanics.
Creation of dApps integrating MetaMask / WalletConnect.
Front-end development (React / Next.js) and back-end development (Node.js / TypeScript).
Implementation of reliable infrastructures: Docker, CI/CD, production environments.

Results
Launch of stable, secure, and production-ready Web3 products.
Deployment of NFT systems and token-gated experiences with high marketing value.
Reduction of delivery times through complete workflow automation.
Support for clients in their technical choices to maximize the impact of their Web3 projects.
Solidity Blockchain Smart Contract Next.js Automatisation