HR & Office Coordinator

Onoff Telecom is a European neo-telecom and SaaS company redefining how people and businesses communicate. Founded by Taïg Khris, Onoff merges software agility with telecom reliability to create simple, powerful, and borderless communication experiences.Today, the company counts over 120 employees across Estonia and Paris, including more than 40 team members based in Paris — and we are continuing to grow.As our HR & Office Coordinator, reporting directly to the CHRO, you’ll be at the heart of People Operations at Onoff in Paris. You will ensure a smooth, high-quality employee experience from onboarding to offboarding, while also making sure our Paris office runs efficiently and remains a great place to work.Key Responsibilities1. PayrollPrepare monthly payroll inputs for France: absences, bonuses, new hires, leavers, and changes in employee status.Ensure accurate and timely transmission of payroll data to our payroll provider.Support basic checks of payslips and answer first-level employee questions about payroll.2. HR Administration & BenefitsManage employee administration: contracts, amendments, employee files, employment certificates, and other HR documentation.Oversee employee benefits: health insurance, provident schemes, meal vouchers, perks, etc.Ensure compliance and proper archiving of all HR documents.3. HR Processes & People DataKeep employee data accurate and up to date in the HRIS and related tools.Build and maintain HR dashboards and reports (turnover, absenteeism, engagement indicators, etc.).Contribute to the continuous improvement of HR processes (simplification, automation, standardization).4. Onboarding & OffboardingOwn the end-to-end operational onboarding and offboarding process.Prepare contracts, welcome packs, equipment and coordinate all stakeholders (IT, managers, finance, etc.).Organize welcome sessions and ensure each new joiner has a structured, warm, and efficient integration.Make sure each departure is handled with clarity, respect, and proper handover of information.5. Office Management – Paris OfficeOversee the day-to-day operations of the Paris office: deliveries, access badges, supplies, workspace organization, in close coordination with the Executive Assistant, who is in charge of contractual relationships and negotiations with vendors.Escalate needs, issues, or improvement ideas to the Executive Assistant to adapt services when needed.Ensure a pleasant, safe, and productive work environment for the team.Help organize internal events (afterworks, breakfasts, team gatherings, etc.).6. Cross-functional Support to the CHRO Work closely with the CHRO on operational HR topics.What We’re Looking For3–5 years of experience in HR operations, HR administration and/or office management, ideally in a start-up / tech environment.Solid understanding of French payroll practices and of the basics of French labor law.Comfortable with digital tools, HRIS systems and Excel (or equivalent) for monitoring and analysing data.Highly organized, rigorous and detail-oriented, with the ability to manage several topics at once.Strong interpersonal skills, a sense of service, and a genuine desire to create a positive employee experience.Discretion, confidentiality, and integrity when handling sensitive information.Fluent in French and English, both spoken and written.