Staff Engineer

About the Role

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. This role sits at the intersection of long-term technical vision, day-to-day operational excellence, and product impact. You will lead the shift from reactive operations to proactive engineering, setting the bar for stability, security, and developer experience across the company.

This is a senior individual contributor role with broad influence, designed for an engineer who drives impact through architecture, standards, mentorship, and product-oriented technical leadership rather than people management.

The Team

You will work across multiple product and platform teams within Jus Mundi's Engineering organization. You will collaborate with closely with Engineering, Product, AI, and Security stakeholders from different squads to define shared foundations and enable teams to move faster and safer.

Our engineering culture values high ownership, pragmatism, collaboration, and technical excellence. You will partner with senior engineers and tech leads to solve complex cross-cutting challenges and raise the overall maturity of our systems and practices.

Your mission at Jus Mundi

In this role, you will:

• Drive architectural decisions and technical strategy across the full technology stack (frontend & backend) and domains, with a strong focus on product outcomes and user impact.
• Design and evolve fault-tolerant, scalable distributed systems, applying proven software engineering patterns such as API versioning, asynchronous messaging, caching strategies, or database sharding.
• Partner closely with Product and Engineering leaders to balance technical trade-offs with business value and delivery timelines.
• Define and enforce engineering standards related to reliability, security, testing, and deployment.
• Lead the transition toward fully automated, self-healing, and immutable infrastructure.
• Act as a technical driver for platform-wide initiatives that improve system reliability, performance, developer productivity, and end-user experience.
• Mentor engineers and act as a trusted technical advisor across the organization.

You will be empowered to modernize our platform foundations, reduce operational risk, and directly impact business outcomes by enabling teams to ship faster with confidence.

Preferred Experience and Skills

Required qualifications and experience

• 10+ years of professional experience in software engineering and cloud infrastructure management, with at least 3 years in senior or staff-level technical leadership roles.
• Proven experience designing, scaling, and operating fault-tolerant distributed systems.
• Strong product mindset, with the ability to understand business context, user needs, and how technical decisions impact product success.
• Demonstrated ability to make and communicate clear technical trade-offs in service of business value, user experience, and long-term platform health.
• Expert-level proficiency in our relevant technology stack, mastering both modern frontend frameworks and modern backend architectures.
• Strong experience of Infrastructure as Code, with hands-on experience using tools such as Terraform, Kubernetes, and Ansible. Environments must be managed strictly through code, with no manual console changes.
• Strong track record of leading complex technical projects without direct managerial authority.
• Excellent written and verbal communication skills, with the ability to explain complex technical concepts to both technical and non-technical audiences.
• Demonstrated ability to deliver high-impact projects on time and to a high standard.
• Fluent English required.

Key technical focus areas

• Developer experience and platform enablement, including CI/CD pipelines, standardized APIs, observability, and high-quality documentation.
• Security by design, including architectural approaches to mitigate risks such as DDoS and scraping without relying on reactive patching.
• Operational excellence, including automated remediation, elimination of manual production interventions, and clear technical debt reduction strategies.
• Code quality, testing strategies, deployment best practices, and system observability.

Bonus skills

• Experience in SaaS or AI-powered platforms.
• Background in security engineering or large-scale platform engineering.
• Prior experience in legal tech or highly regulated environments.

 Interview process

We're proud of our multicultural team representing 37 nationalities To ensure smooth communication, please apply in English (CV + Application Form).

• Introductory Call with Laurine, Talent Manager (30 min)
• Management Interview with Thomas, CTO, and Yohan, Head of Infrastructure (1H)
• Use Case & Tech Q/A: Matthieu, John, Tech Leads, and Yohan, Head of Infrastructure (1H30)
• Team-fit Meeting with DevOps and Software Engineers from the team (45 min)
• 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.

Need More Reasons to Join Us?

• Enjoy a hybrid working organization that combines remote and on-site work (2 days).
• Get 5 weeks of vacation each year, and take them whenever it suits you.
• Receive 100% coverage of private health insurance for yourself and your children.
• Enjoy 60% company-funded restaurant vouchers for your weekday meals (Swile).
• Participate in company-wide summits called JM Fest to connect and inspire.
• Stay active with a co-financed ClassPass membership by accessing a variety of fitness and wellness activities.
• Enjoy the flexibility to work from anywhere across the globe for up to 8 weeks per year.
• Receive relocation assistance to help ease your transition to France.
•  Profit from our support in ongoing training to continually expand your skills and knowledge.
• Last but not least: Experience a commitment to building a warm, inclusive, and diverse environment.

At Jus Mundi, we believe that diversity, equity, and inclusion are key to our success. Confidence can sometimes hold us back from applying for a job, but we'll let you in on a secret: there's no such thing as a 'perfect' candidate. We celebrate diverse backgrounds, experiences, and identities, and we encourage you to apply regardless of how you identify. Whether you're early in your career or a seasoned professional, your unique perspective and skills are what matter most. Join us in building a workplace where everyone feels valued, empowered, and excited to contribute their best work every day.

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