Software Engineer, Agent (French speaking)

hackajob is partnering directly with Sierra to hire for this role.

At Sierra, we are creating a platform to help businesses build better, more human customer experiences with AI. We are primarily an in-person company based in San Francisco, with growing offices in Atlanta, New York, London, Paris, Madrid, Munich, Singapore, Japan, and Sydney. We are guided by a set of values that are at the core of our actions and define our culture: Trust, Customer Obsession, Craftsmanship, Intensity, and Family.

What you'll do:

• Design and deliver production-grade AI agents: You'll build and ship highly performant, reliable, and intuitive AI agents that are central, mission-critical and drive revenue directly to Sierra's growth.
• Drive the Agent Development Life Cycle (ADLC): You'll have complete ownership and autonomy from initial pilot through deployment and continuous iteration.
• Partner with large enterprises and cutting-edge startups: You'll work directly with leaders at some of the world's largest enterprises to understand their most pressing business challenges.
• Build the future of the platform: Your direct work with customers will guide the evolution of Sierra's core platform.

Example projects:

• Design and build AI agents for large telecommunications and media companies that consistently outperform human agents in managing subscription churn.
• Develop and refine AI agents capable of navigating complex customer interactions.
• Create generalizable AI agent frameworks tailored for industry-specific use cases.
• Facilitate design partnerships for new product initiatives.
• Experiment with the latest voice models and figure out how to integrate them at scale.

What you'll bring:

• Experience building and scaling end-to-end production systems.
• Strong technical problem-solving skills, especially in fast-changing, ambiguous environments.
• A builder and tinkerer’s mindset with high agency.
• Comfort working directly with customers to understand their needs.
• Excellent communication skills - clear, direct, and persuasive across technical and non-technical audiences.
• Professional fluency in both French and English.

Even better:

• Experience building or deploying AI/LLM systems in production.
• Have been a founder or founding engineer.
• Familiarity with tools that power today's AI agents.
• Prior experience with React, TypeScript, and/or Go.

Our values:

• Trust: We build trust with our customers with our accountability, empathy, quality, and responsiveness.
• Customer Obsession: We deeply understand our customers' business goals.
• Craftsmanship: We get the details right, from the words on the page to the system architecture.
• Intensity: We know we don’t have the luxury of patience.
• Family: We know that balance and intensity are compatible.

What we offer:

• Flexible (unlimited) paid time off.
• Medical, dental, and vision benefits for you and your family.
• Life insurance and disability benefits.
• Retirement plan dependent on country of employment.
• Parental leave.
• Fertility and family building benefits through Carrot.
• Lunch, as well as delicious snacks and coffee.
• Discretionary benefit stipend.
• Free alphorn lessons.

Be you, with us. We're working to bring the transformative power of AI to every organization in the world. We encourage you to apply even if your experience doesn't precisely match the job description.