Technical Support Engineer (L2)

Onoff · Unified Communications · Consumer & Utility Software · 1 day ago

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Location

Hybrid (Bucharest, Romania)

Employment

Full-Time

Confirmed on the employer's own hiring board on Nov 13, 2026. First seen by Alion on Nov 12, 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 · Unified Communications · Consumer & Utility Software · Est. 2014

Backed by LeanSquare

Join Onoff, a unique mobile application that allows users to add multiple phone numbers to their smartphones. As a Technical Support Engineer (L2), you will investigate and resolve technical issues, collaborate with various teams, and contribute to process improvement. This is a permanent, full-time position based in Bucharest or Paris, with a monthly salary range of 9800 to 14000 RON/NET.

Missions

Investigate and resolve technical issues escalated by Customer Care (L1), identify potential root causes and ensure complex incidents are properly documented.
Work closely with the Technical Support Team Lead, Engineering, Product and external telecom partners to troubleshoot issues across mobile applications, VoIP, APIs, databases and business integrations.
Participate in investigating production incidents, assess customer impact and collaborate with relevant teams to support resolution. Provide clear, timely technical updates to Customer Care and internal stakeholders.

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