We’re not hiring "just another developer." We’re looking for a sharp Fullstack Engineer to join our squad in Bucharest. You will help build and scale the internal tooling and backoffice systems powering Onoff’s global telecom platform.
Why Onoff?
• Real Impact: Build the backoffice core driving our innovative mobile communication platform.
• Hybrid Work: 3 days remote per week from our central office near Universitate (Teatrul Național).
• Focused Squad Culture: Work in a lean team (1 Team Lead + 3 Engineers) where your ideas drive real decisions.
• Perks & Support: Competitive pay, private health plan, extra time off, travel budget, and continuous learning support.
What You’ll Do
• 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)
• Handle full lifecycle development: implementation, CI/CD, testing, and deployment.
• Take proactive ownership of quality: monitor logs (ex:Grafana), debug issues independently, and participate in code reviews.
• Collaborate closely within your squad to ship fast, reliable solutions.
What You Bring
• Technical Core: Hands-on experience with modern Java (v21/22 mandatory) and React.js or Angular.
• System Knowledge: Solid understanding of databases, deployment pipelines, and CI/CD. Microservices experience and design patterns are a strong plus.
• Proactive Mindset: You take full ownership of your tasks. You don't wait for step-by-step instructions—you test, debug, and fix.
• Practical Experience: Around 5 years of hands-on experience (proven project impact matters more than exact years).
• Communication: Strong spoken and written English skills (B2/C1 level).
Ready to build? Send your CV and let’s talk!
Skills Required
- Hands-on experience with modern Java version 21 or newer
- Experience with React.js or Angular
- Solid understanding of databases
- Experience with deployment pipelines and CI/CD
- Around five years of hands-on software engineering experience
- Strong spoken and written English skills at B2/C1 level
- Microservices experience and design patterns
What We Do
Onoff is a French telecommunications company that provides cloud-based mobile telephony through smartphone and web applications. Its services let individuals and businesses use multiple mobile numbers without additional SIM cards or phones, while Onoff Business enables employers to assign and manage numbers, calls, SMS, contacts, voicemail, reporting, and integrations for teams. The company combines mobile-app and cloud technologies to make communications more flexible, economical, and environmentally friendly.
