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About the Role

As a Senior Software Engineer focused on AI/LLM features, you will improve, scale, and stabilize AI capabilities as they transition from early-stage features to core product workflows. You will bring expertise to improve reliability and stability, and drive product improvements in collaboration with the team.

Responsibilities

• Build and iterate on LLM features, including agentic workflows, using LangGraph and LangSmith.
• Scale the platform foundations behind these features — orchestration, performance, and reliability.
• Partner closely with the team's ML Engineer on design, evaluation, and productionization of AI systems.

Requirements

• 5+ years of experience in software engineering and a proven track record of shipping production systems.
• Hands-on experience building LLM-powered features in production, with a clear understanding of the trade-offs (quality, cost, latency, safety) and how they connect to product and business needs.
• Ability to systematically improve LLM systems: versioned prompts, offline/online evaluations, data analysis, and iteration based on real-world signals.
• Ability to industrialize LLM systems at scale (caching, batching, model routing, observability, rate limiting, ML CI/CD pipelines).
• Strong in Python and comfortable working with REST APIs and making pragmatic architectural decisions.
• Operate as a senior engineer: debugging complex systems, refactoring with intent, reviewing code thoughtfully, and thinking ahead about scalability.
• Take ownership: identify gaps, propose solutions, and go beyond your immediate scope.
• Connect technical decisions to product and business outcomes.
• Regularly use AI tools in your daily workflow.
• Communicate clearly and collaborate effectively, especially with ML teams.
• Fluent in English (written and spoken) and comfortable working in an international environment.
• Basic knowledge of Kubernetes and Terraform to independently deploy and operate services.
• French is a plus for day-to-day collaboration in our Paris office.

Skills

• Python
• SQL
• Dust
• LangChain
• LangGraph
• LangSmith
• n8n
• Snowflake
• Dagster
• Kubernetes
• Docker
• Terraform
• Fivetran
• Airbyte
• PostgreSQL
• Elasticsearch
• REST APIs

Location

• Paris
• New-York City
• Boston

Work Type

• Hybrid (3 days/week at the office in Paris)
• Remote policy

Experience Level

• Senior

Benefits

• Package that includes BSPCE
• Lunch voucher (Swile, 9€ at 50%)
• Sponsored Wellpass (gymlib)
• Non-charged health insurance for children (Sidecare / Generali)
• Up to €300 to improve your home office set-up
• Yearly holiday allowance
• Referral bonus of 4000€ for any new Guardian we might hire thanks to you
• Team building: monthly budget dedicated to each employee that you can spend as you wish, with colleagues
• Opportunities for career development in the long term

About the Company

• GitGuardian is a global cybersecurity scale-up.
• The company is based in Paris, New-York City, Boston.
• Early investors include the co-founder of GitHub, Scott Chacon, along with Solomon Hykes, Docker's co-founder.
• American and European top-tier VC firms have invested in GitGuardian, which raised its series C early 2026.
• GitGuardian helps enterprises close credential-based breach paths by finding secrets, prioritizing remediation, and preventing new exposure across code, systems, and AI.
• The GitGuardian platform is used by more than 600K developers worldwide and by 50 of the fortune 500.
• Our solutions are already used by hundreds of thousands of developers in all industries and GitGuardian platform is the n°1 app on the GitHub marketplace.
• GitGuardian helps organizations find exposed sensitive information that could often lead to tens of millions of dollars in potential damage.
• More than 70% of our customers are in the United States.
• Many F500 companies use GitGuardian's platform.
• The Guardians are knowledgeable, committed, serious, aligned with the company’s mission, and true team players.
• The team is diverse and we hail from more than 20 different countries.
• We are also agile, remote-friendly, and fun people to work with.
• You will get trust & autonomy on your perimeter with a very transparent internal communication and a strong impact on the company development.