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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Jus Mundi SAS - **Company:** Jus Mundi's Engineering - **Location:** France - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** PHP (Programming Language), Artificial Intelligence, Software as a Service, Software Quality, Continuous Integration, DevOps, Distributed Systems, Fault Tolerance, Node.Js, Software Deployment, Software Engineering, Symfony, Strategies of Testing, Reliability of Systems, Backend, Kubernetes, Infrastructure Automation Frameworks, Production Code, Software Library, Programming Languages - **Published:** September 5, 2026 - **Apply:** https://startup.jobs/staff-engineer-jus-mundi-sas-8355887 ## About the Role * 10+ years of professional experience in software engineering and cloud infrastructure management * At least 3 years in senior or staff-level technical leadership roles * Strong track record of leading complex technical projects without direct managerial authority Technical Stack & DevOps * Senior software engineering experience with PHP and Symfony (our core backend stack) * Solid experience with Node.js (Nuxt experience is a plus but not critical) * Strong DevOps expertise: Kubernetes, Infrastructure as Code, CICD, Observability * Experience designing, scaling, and operating fault-tolerant distributed systems * Ability to work across multiple programming languages and contexts System Design & Architecture * Deep expertise in system design and distributed systems architecture * Proven ability to make and communicate clear technical trade-offs * Experience orchestrating complex technical transitions across multiple teams Leadership & Communication * Crisis management experience and composure under pressure * Strong opinions with ability to advocate for positions while driving consensus * Excellent capacity to convince, guide, and drive technical decisions * Outstanding written and verbal communication skills in English (fluent required) * Strong product mindset with ability to understand business context and user needs * Ability to evolve in a fast changing environment, reevaluating priorities and choosing the right impact at the right time under multi lever requirements Bonus: Experience in SaaS or AI-powered platforms, security engineering, large-scale platform engineering, or legal tech environments is a plus. ## Description Jus Mundi is looking for a Staff Engineer to play a critical role in shaping and sustaining a resilient, secure, and scalable platform that acts as a force multiplier for our entire engineering organization. Engineering Product Design team North Star is "Zero-friction delivery: We deliver business value at speed and securely by mastering simple, standardized engineering practices.". You will be the technical guardian of this mission, doing whatever it takes, from hands-on implementation to cross-team orchestration to make it happen, grounding every technical decision in product impact and a deep understanding of our business context (users, workflows, and value drivers). This role balances strategic technical leadership with hands-on engineering work. You'll roll up your sleeves for critical stack upgrades (PHP, Symfony, third party libraries, etc.) as much as you'll architect large-scale system transitions., You will work across multiple product and platform teams within Jus Mundi's Engineering organization, collaborating closely with Engineering, Product, AI, and Security stakeholders from different squads to define shared foundations and enable teams to move faster and safer., * Drive architectural decisions and technical strategy across multiple teams and domains, with a strong focus on product outcomes and user impact * Design and evolve fault-tolerant, scalable distributed systems * Guide teams toward sound architectural decisions and coordinate initiatives across multiple squads * Partner with Product and Engineering leaders to balance technical trade-offs with business value Hands-On Technical Work * Tackle essential work such as stack upgrades (PHP, Symfony) and technical migrations * Write production code across different domains and rapidly context-switch between technical subjects * Jump into crisis situations and drive resolution (e.g., critical infrastructure incidents) * Lead by example in code quality, testing strategies, security by design, and deployment best practices Platform Excellence & Engineering Framework * Lead the implementation of our new engineering framework (priority #1) * Define and enforce engineering standards related to reliability, security, testing, and deployment * Lead the transition toward fully automated, self-healing, and immutable infrastructure * Drive platform-wide initiatives that improve developer productivity, system reliability, and end-user experience, We're proud of our multicultural team representing 37 nationalities! To ensure smooth communication, please apply in English (CV + Application Form). * Introductory Video Call with Laurine, Talent Manager (30 min) * System Design Interview with Yohan, Head of Infrastructure, and Dash, Head of AI (1h30) * Deep Dive Coding Challenge with John, Tech Lead Manager, and one Software Engineer (1h30-2h) * Product & Technical Mindset interview with Matthieu, Tech Lead Manager, and one Product Manager (45 min) * Half-Day of immersion at the Office + Lunch or Afterwork (3h) * Last call with Jean-Rémi, CEO, or Anna, VP of People (30 min) Please note that, due to the nature of the sector we operate in, the final steps of our recruitment process include reference calls and a background check. ## Related Videos - [Hosting a modern justice system](https://www.wearedevelopers.com/videos/332-hosting-a-modern-justice-system) - [Profiling Symfony & PHP apps with Blackfire](https://www.wearedevelopers.com/videos/265-profiling-symfony-php-apps-with-blackfire) - [Stop using Node.js like in 2020! 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