Fullstack Software Engineer - Romania

Onoff • Telecommunications • JavaScript • Java • 1 day ago
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Location
Hybrid (Bucharest, Romania)
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 8, 2026. First seen by Alion on Sep 17, 2026.

Overview
Company
Impact
Profile match

Onoff

Onoff lets users add extra phone numbers to a single handset through a software SIM, separating professional and private life. Its business version gives companies managed second lines for employees without extra hardware. The company is headquartered in Paris.
onoff.app • HQ: Paris, France • Telecommunications • Est. 2014
Backed by LeanSquare

Join Onoff, a global telecom platform, as a Fullstack Engineer in Bucharest, Romania. You will design, build, and maintain backoffice features and internal tooling, working with modern Java and React.js. Enjoy a hybrid work environment, competitive pay, and opportunities for continuous learning.

Missions

  • Design, build, and maintain end-to-end backoffice features and internal tooling.
  • Write clean, high-performance code on the backend (Java 21/22+) and modern UIs on the frontend (React.js).
  • Take proactive ownership of quality: monitor logs (ex:Grafana), debug issues independently, and participate in code reviews.
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