Senior Software Engineer - Java/Kotlin (x/f/m)

Doctolib

We are looking for an Engineering Manager to join the OREO (Observability Reliability Engineering Obsession) team in Platform Engineering. As an Engineering Manager, your mission will be to lead the Reliability & Observability team and drive the evolution of Doctolib's observability platform, supporting the exponential growth of Doctolib services while building and empowering a world-class SRE team. Working in the tech team at Doctolib involves building innovative products and features to improve the daily lives of care teams and patients. We work in feature teams in an agile environment, while collaborating with product, design, and business teams. You will lead a team of Site Reliability Engineers who are responsible for shaping Doctolib's observability strategy and ensuring our platform remains reliable, debuggable, and scalable. This role sits at the intersection of people management, technical leadership, and strategic planning with a particular focus on building organizational capabilities around logging, metrics, tracing, and alerting. Your team also owns and operates critical transversal services that enable secure, scalable infrastructure management across the organization, including HashiCorp Vault for secrets management and Terraform Enterprise for infrastructure as code. Your responsibilities include but are not limited to:   People Leadership: * Lead, coach, and grow a team of Site Reliability Engineers, supporting their technical development and career progression * Create a culture of operational excellence, continuous improvement, and psychological safety within the team * Conduct regular 1:1s, performance reviews, and career development conversations * Recruit, onboard, and retain top SRE talent aligned with Doctolib's mission and values Technical Strategy: * Partner with SREs and senior engineers to define and evolve the observability strategy across the platform, focusing on logging, metrics, tracing, and alerting * Own the strategy and evolution of critical transversal services including HashiCorp Vault and Terraform Enterprise * Drive prioritization and roadmap planning for large-scale reliability and observability initiatives * Ensure alignment between team objectives and broader engineering and business goals * Advocate for and allocate resources toward reducing technical debt and improving developer experience Operational Excellence: * Own the team's on-call experience and contribute to the incident response processes, ensuring sustainable practices and continuous improvement * Ensure high availability and reliability of transversal services that are critical to the entire engineering organization * Lead postmortem reviews and drive systemic improvements to prevent recurring issues Cross-functional Collaboration: * Work closely with Product Managers, Engineering Managers, and architects to align observability capabilities with product and platform needs * Partner with security and infrastructure teams to evolve secrets management and IaC practices across the organization * Represent the OREO team in engineering leadership forums, architectural reviews, and strategic planning sessions * Foster strong partnerships with software engineering teams to improve instrumentation quality and adoption of observability best practices ABOUT OUR TECH ENVIRONMENT * Our solutions are built on a single fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to the country and healthcare specialty requirements. To address these challenges, we are modularizing our platform run in a distributed architecture through reusable components. * 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 and learn about our first AI hackathon here! 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 have at least 5+ years of software engineering or SRE experience, with a strong technical background in cloud-native environments (preferably AWS, GCP, and/or Kubernetes-based) * You have 3+ years of engineering management experience, leading technical teams (ideally SRE, platform, or infrastructure teams) * You have deep understanding of observability tooling and architecture (Fluent Bit, OpenTelemetry, Loki, Elasticsearch, Prometheus, Thanos, Datadog) * You have experience with infrastructure as code (Terraform, OpenTofu) and secrets management systems (Vault, AWS Secrets Manager) * You have proven ability to balance technical depth with people leadership, able to mentor engineers, review technical designs, and guide architectural decisions Now it would be fantastic if you: * Have experience scaling SRE or platform teams in fast-growing, high-traffic environments * Have background in designing and operating high-scale telemetry pipelines * Have hands-on experience with HashiCorp Vault and Terraform Enterprise in production environments * Have hands-on experience with backend programming languages (e.g., Go, Python, Ruby) * Have experience driving cultural and technical transformations WHAT WE OFFER * Free comprehensive health insurance for you and your children * ParentCare Program: Enjoy full salary coverage (100%) during your first month of birth leave, and 75% during the second, covered by Doctolib * Free mental health and coaching services through our partner Moka.care * For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support * Work from EU countries and the UK for up to 10 days per year, thanks to our flexibility days policy * Work Council subsidy to refund part of sport club membership or creative class * Up to 14 days of RTT * A subsidy from the work council to refund part of the membership to a sport club or a creative class * Lunch voucher with Swile card THE INTERVIEW PROCESS * 30-min phone screen with a Tech Recruiter * 1h30 technical interview (SRE System Design & Architecture) * 1h15 behavioral interview (Leadership & People Management) * 1h30 Engineering Management case study (team scenarios, prioritization, and conflict resolution) * 1h manager interview with Senior Engineering Leadership * At least one reference check JOB DETAILS * Permanent position * Full-time * Levallois-Perret, France * Start date: as soon as possible If you would like to find out more about tech life at Doctolib, feel free to read our latest Medium blog articles! 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, 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! 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.

Qube Research & Technologies

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology and data driven group implementing a scientific approach to investing. Combining data, research, technology and trading expertise has shaped QRT’s collaborative mindset which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high quality returns for our investors.  As a Senior Security Engineer, you will help define and raise the security bar for applications and services across QRT. Working closely with engineering teams, you will conduct security assessments, review system designs, identify vulnerabilities, and drive security best practices across the software development lifecycle. You will propose pragmatic mitigations and help ensure services are secure and resilient before launch. This role offers exposure to the full breadth of QRT's technology landscape, from cloud platforms to low-latency trading infrastructure. Your future role within QRT: * Conduct security design reviews for new and existing product, evaluating architecture documents, threat models, and system designs for potential security risks.  * Conduct threat modelling to identify attack vectors, security risks, and areas of concern in product design, so that security is built in at every stage of the development lifecycle.  * Partner with engineering and product teams to embed security into product design and development, drawing on your experience securing large‑scale software systems.  * Document, track, and communicate security findings to engineering teams with clear remediation guidance, verify fixes, and advise development teams on secure coding practices.  * Implement security controls and processes for product security, including core trading infrastructure, cloud services, and business applications across both Windows and Linux environments.  * Build and maintain a secure software development lifecycle (SDLC) with a focus on secure coding practices in languages like Python, C++, Rust, Go and Kotlin/Java.  * Mentor, guide, and train on security best practices and secure development processes to engineering teams working in mixed cloud services and operating systems environments.  * Integrate security scanning tools (SAST, DAST, etc.) into CI/CD pipelines and runtime delivering continuous monitoring and threat detection across cloud services and on-prem systems.  * Identify security risks and shape strategies for risk mitigation in a fast-paced high-stakes environment.  Your present skillset: * 5+ years hands-on in product or application security, securing software development across large engineering organisations.  * Deep knowledge of the security principles, attack surface, and remediation patterns for cloud platforms, SaaS tooling, and internal applications. Reasons about threats and risks in terms of real impact, not abstract severity scores.  * Finds vulnerabilities in infrastructure and application code, then produces proofs of concept that demonstrate risk, not just severity.  * Extensive hands-on experience with AWS and a clear grasp of the security boundaries of a hybrid environment with on-premises infrastructure.  * Read code fluently. Python, C++, Rust, Go, or Kotlin/Java: the language matters less than the ability to spot what is unsafe and suggest a safer pattern.  * Leads threat modelling sessions and turns the output into actionable mitigations for large-scale, complex systems in a trading environment.  * Communicate clearly, solve problems rigorously, and adapt under pressure.  * Familiarity with trading financial systems is a plus.  QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance.

Qube Research & Technologies

Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in all liquid asset classes across the world. We are a technology- and data-driven group implementing a scientific approach to investing. Combining data, research, technology, and trading expertise has shaped our collaborative mindset, which enables us to solve the most complex challenges. QRT’s culture of innovation continuously drives our ambition to deliver high-quality returns for our investors. This role sits at the intersection of distributed systems, platform engineering, and high-performance computing. You will build and operate the foundational services that quantitative researchers rely on every day, including workload orchestration, scheduling, security, observability, and platform tooling. Your Future Role Within QRT: * Design, build, and operate distributed services that manage compute workloads and data access across large-scale infrastructure * Develop platform APIs and tooling that improve the productivity of quantitative researchers * Improve the reliability, scalability, and performance of compute-intensive research workflows * Build solutions for scheduling, resource management, observability, and security * Partner closely with researchers and infrastructure teams to translate complex requirements into scalable platform capabilities * Take ownership of systems end-to-end, from design and implementation through production operation Your Present Skill Set: * Bachelor's, Master's, or PhD degree in Computer Science or a related field, or equivalent practical experience * 5+ years of experience building and operating large-scale distributed systems in production environments * Strong proficiency in C++, Java, Rust, Go, or other systems programming languages * Deep understanding of distributed systems, concurrency, performance optimization, reliability, and fault tolerance * Experience designing and operating services, platforms, or infrastructure used by other engineers Nice to have: * Experience with internal developer platforms, cloud infrastructure, orchestration systems, or HPC environments * Familiarity with GPU-accelerated workloads and modern ML frameworks such as PyTorch or TensorFlow * Experience supporting researchers, data scientists, or other highly technical users * Exposure to quantitative finance or large-scale data-intensive environments   QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and respectfully to achieve collective success. In addition to professional achievement, we are offering initiatives and programs to enable employees achieve a healthy work-life balance.