Service Technician / TOC Specialist – VoIP & SIP (m/w/d)

MEET URBAN SPORTS CLUB We are among the leading platforms for sports and wellness in Europe, dedicated to inspiring people to live active, healthy lives. With just one membership we offer access to thousands of fitness and wellness experiences across the continent. But what truly sets us apart? We believe our people are at the heart of everything we do. If you’re curious about how we work, what we value and how you might grow with us, explore our Culture Hub & Career Opportunities. *Big news: Wellhub and Urban Sports Club unite!* Urban Sports Club is now a proud part of Wellhub, creating a global wellbeing ecosystem. Together, we connect 39,000 corporate clients and 97,000 wellness partners across 18 countries, offering millions of people even more ways to stay active and take care of their health. THE OPPORTUNITY  We are looking for an experienced Senior Backend Engineer to join our Foundation Engineering team. In this role, you won't just be building features for a single product; You will be crafting the very core services that power the entire Urban Sports Club ecosystem. The Foundation team sits at the heart of our engineering organization. We are responsible for application-level, system-wide services that enable our multi-million user base to interact with our platform seamlessly. Your initial focus will be taking ownership of our critical Identity & Authentication services and our core Search backend, with exciting plans to architect and scale a centralized Notification service in the near future. You will act as a force multiplier for our entire engineering department. By designing highly scalable, secure, and performant internal APIs and services, you will enable other product teams to build fast and deliver value to our users. If you love deep-diving into system design, solving complex architectural challenges at the application level, and working with Golang, this is the perfect place for you. This position will be based in Berlin. WHAT YOU WILL DO * Own Core System Services: Architect, develop, and maintain high-throughput, application-level foundational services, focusing initially on identity/authentication and our core search backend service. * Drive Technical Evolution: Design and implement future shared services that support our vision for scaling the platform. * Enable Engineering Teams: Build clean, robust, and well-documented internal APIs and developer tools that empower other product teams to build features rapidly and securely. * Write Exceptional Code: Deliver highly testable, maintainable, and secure Golang code, taking full operational ownership of the components your team develops. * Foster Best Practices: Actively participate in the Urban Sports Club backend cluster, championing strong system design, modularized architecture, and automated testing across the company. * Collaborate Across Boundaries: Work closely with product owners, tech leads, and other engineering teams to understand their requirements and translate them into scalable, domain-agnostic solutions. WHAT YOU WILL NEED TO SUCCEED * You have extensive industry experience as a Senior Backend Engineer developing, optimizing, and troubleshooting large-scale applications written in Go (6+ years) * You have a solid understanding of (or direct experience with) core foundational services like Identity/Authentication protocols (e.g., Keycloak, OAuth2, OIDC) and search engines. * You possess a deep understanding of data structures, algorithms, and distributed system design. You know how to build modular, high-volume services that remain performant under heavy traffic. * You have a track record of designing clean, secure, and developer-friendly internal APIs that scale across multiple engineering teams. * You are comfortable working within cloud ecosystems (GCP/AWS) from an application perspective, understanding how to leverage cloud-managed services efficiently. * You break down complex, abstract problems into elegant software solutions. You communicate effectively with technical stakeholders and love mentoring others. * Experience with PHP is a nice-to-have. We have some legacy context here, so a familiarity with PHP helps if you need to understand existing logic during modernizations or integrations - but your primary daily weapon will be Go. * You engage, inspire, and motivate the people you work with. We like to have fun while building the backbone of a platform that inspires healthy living. WHAT’S IN IT FOR YOU  * Work on cutting-edge tech and influence the future of our stack: explore our Tech Radar * We're open to relocation and providing support with our visa agency * Free Urban Sports Club L Pro Membership + Friends and Family Discount: Stay active with free membership, plus discounts for friends and family. * Flexible Work Model: Enjoy a hybrid work setup, balancing on-site and remote work options to fit your lifestyle. * Extended Remote Work Options: Work up to 120 days remotely within the EU, the UK, and Switzerland, including 30 days outside the EU. You’ll also have the option to desk-swap at our other European offices. * WorkOUT Life Balance: Take advantage of 30 days of paid vacation annually, plus two additional days for volunteering, flexible working hours, and complimentary access to our mental health provider Open Up. * Personal Development: Receive an annual budget of €1,000 for professional growth, with regular internal training sessions and weekly German and English language classes. * Engaging Team Culture: Participate in regular team and company events along with wellness initiatives that help you stay productive, healthy, and engaged in a hybrid work environment. Urban Sports Club is committed to providing a friendly, safe, and welcoming environment for everyone who applies for a position or already works with us, regardless of their sports preferences, gender, gender identity and expression, sexual orientation, disability, physical appearance, body size, race, age, or religion (or lack thereof).

We are looking for an Engineering Manager to join the Business Performance Team in Berlin. Your mission will be to enable seamless, secure connectivity between healthcare systems by building and scaling Doctolib's self-service integration platform; making system integrations effortless and accessible to healthcare providers across every market we operate in, from a single platform rather than country by country.. You will lead a hybrid team working on the technical backbone that powers Doctolib's international expansion, contributing directly to reducing integration time by 75% and unlocking 500+ certified integrations for 400K+ health professionals and 80M+ patients. Working in the tech team at Doctolib means building innovative products and features to improve the daily lives of care teams and patients. What you'll do Your responsibilities include but are not limited to: * Lead  a hybrid team of ~8 engineers (internal employees and contractors), growing internal talent while holding contractors accountable for delivery, and shaping how the two work together as the platform scales * Own end-to-end delivery of integration projects on the  platform, ensuring reliability, scalability, and building to national interoperability standards with full compliance to healthcare standards (HL7, FHIR R5/R6) * Drive backend architecture decisions in a JVM-focused stack (Java, Kotlin), championing FHIR-native design and interoperability best practices * Build integrations as a platform that scales across partners, countries and products * Partner with Product, and cross-market engineering teams across France, Germany, and Italy to align on platform priorities and roadmap * Champion AI adoption within the team, enabling MCP-native patterns and AI-assisted integration tooling as part of Doctolib's platform strategy * Mentor and grow internal engineers, while maintaining high delivery standards and engagement with your full team.  Who you are Before you read on: if you don't have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply. You'll be a great fit if you: * You have at least 6+ years of software engineering experience and 3+ years of engineering management experience, including leading large or hybrid teams (internal engineers + contractors), ideally 8+ people * You have a strong background in backend and system-to-system integration: APIs, middleware, and healthcare data exchanges, with hands-on familiarity with JVM ecosystems (Java, Kotlin) * You have experience with healthcare IT integrations, including standards such as HL7 and FHIR, and working within regulated, compliance-driven regulated environments * You can differentiate your management approach between developing internal engineers and driving delivery from external contractor profiles, with proven success in both It would be fantastic if you: * Have exposure to AI tooling in engineering workflows: coding agents, LLM-assisted development, or MCP-native patterns * Have delivered products across multiple countries or international markets Life at Doctolib Tech * Our solutions are built on a single fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty requirements. * Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native. * We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here. Want to learn more about our tech culture and environment? Visit the Doctolib Tech site. What we offer * A Deutschlandticket (Germany-wide public transport pass) fully paid for by Doctolib * 28 vacation days + 1 additional day for each full calendar year of employment (up to a maximum of 30 days) * Work from abroad for up to 10 days per year thanks to our flexibility days policy * Company health insurance with great supplementary benefits through our partner Allianz * Company pension scheme (bAV) through Allianz with an employer subsidy of 40% (15% within the probationary period) * The Doctolib Parent Care program, which includes one month additional parental leave and much more * Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth * Free mental health and coaching services through our partner Moka.care * Subsidized sports membership through our partner Urban Sports Club * A flexible workplace policy offering both hybrid and office-based mode * Alongside healthy snacks and our regular breakfast buffet, we provide a subsidized meal benefit * For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support * Relocation support in case of international mobility * Access to the best AI tools for coding, development and dedicated training Our interview process * Recruiter Interview * System Design Interview * Behavioral Interview * EM Case * At least one reference check We want your experience to be clear, respectful, and transparent. Learn more about our hiring process on our candidate experience page. Job details * Permanent position * Tech stack: Java, Kotlin, Ruby * Full-time * Berlin, Germany * Hybrid work setup (up to 3 remote days per week) * Start date: as soon as possible We welcome everyone At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination. The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, or disability. To ensure equal opportunities, we invite you to exclude personal information (e.g., pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process. Join us in building the healthcare we all dream of! Your data privacy All information provided is processed by Doctolib for application management. For data processing details, click here. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.