Freelancer profile translated to English.

Description

I help SaaS teams make their production APIs and backends reliable and scalable.

Currently at RingCentral (international scale), I develop critical production APIs used by thousands of companies, with strong constraints on performance, reliability, and real-time operation.

👉 Specifically, I get involved when:

- an API becomes slow or unstable under load
- technical debt hinders evolution
- deployments are risky or fragile

**I support startups and SMEs with their Node.js / TypeScript backends (NestJS, MongoDB)**, particularly for:

- designing a complete architecture (auth, roles, jobs, webhooks)
- improving performance and scalability
- securing deployments and automating workflows
- evolving an existing product without a complete rewrite

My approach is pragmatic and product-oriented:

I build clear, maintainable systems capable of handling load over time, with a focus on reliability, observability, and continuous delivery.

Before this, I was a teacher at EPITECH, where I mentored students on backend fundamentals, architecture, and teamwork.

👉 If your API/backend needs to handle load, evolve cleanly, or be made reliable in production, let's discuss.

Industry field of expertise

Languages

Serbian
Native or bilingual
English
Native or bilingual
French
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

RingCentral Engage Digital
Software Engineer
TECH
March 2023 - Today (3 years and 5 months)
Paris, France
SWE 2 Continunation of my experience with RingCentral and RingCentral Engage Digital.
Higher impact missions, higher responsability and code ownership on high ARR and client critical features.
Ruby on Rails Ruby Node.js Git Docker
Self-employed
Freelance SWE Consultant
TECH
April 2022 - March 2023 (11 months)
Many different experiences, NodeJS, React, Docker, Flutter, etc..
More details upon further contact, although many projects are private or were privately funded so under limited information sharing clauses
Node.js Typescript NestJs Gitlab Agile method
EPITECH
Teaching Assistant
EDUCATION AND E-LEARNING
September 2021 - February 2022 (6 months)
Le Kremlin-Bicêtre, France
During my time as the TA for EPITECH, I used my social skills as well as my technical
and organizational knowledge to lead the "Cobra" students and thus manage and
organize coding sessions for potentials students as well as external organizations,
as well as do outreach.
Microsoft Excel Pedagogy Project management Mentoring Jenkins