Software Engineer, Agent (Portuguese Speaking)

Salary: $211,000 - 251,000 per year Requirements:

• Professional fluency in both Brazilian Portuguese and English
• Experience building and scaling end-to-end production systems
• Strong problem-solving ability, especially in fast-moving and ambiguous settings
• A builder and tinkerer mindset with high initiative and a drive to ship
• Comfort working directly with customers to understand needs and solve practical problems
• Excellent communication skills, with the ability to be clear, direct, and persuasive across technical and non-technical audiences
• Preferred: experience building or deploying AI/LLM systems in production
• Preferred: founder or founding engineer experience, with exposure to balancing craft, ownership, and speed
• Preferred: familiarity with eval frameworks, agent tooling, RAG pipelines, and prompt engineering
• Preferred: experience with React, TypeScript, and/or Go
• Preferred: prior roles involving customer interaction or technical project leadership with external stakeholders

• Design and deliver production-grade AI agents that are reliable, high-performing, and intuitive
• Own the Agent Development Life Cycle from pilot through deployment and ongoing iteration
• Build, tune, and evolve AI agents in production while helping define best practices for ADLC
• Work directly with leaders at large enterprises to understand business challenges and create AI agents that improve operations at scale
• Partner with innovative startups to embed AI agents across their business systems and drive efficiency
• Use customer feedback to influence the evolution of our core platform
• Identify unmet needs, prototype new tools and features, and collaborate with research, product, and platform teams to shape the future of AI agent development
• Work on example initiatives such as churn-reduction agents, customer-interaction agents, industry-specific frameworks, design partnerships for new product ideas, and large-scale voice model integrations

• AI
• AI Agents
• Support
• LLM
• RAG
• React
• TypeScript
• CTO
• Salesforce
• VR

More:

We are Sierra, building a platform that helps businesses create 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, Tokyo, and Sydney. Our culture is guided by Trust, Customer Obsession, Craftsmanship, Intensity, and Family. Our co-founders are Bret Taylor and Clay Bavor, and we offer a strong full-time benefits package that includes unlimited paid time off, medical, dental, and vision coverage for employees and their families, life and disability insurance, a retirement plan depending on country of employment, parental leave, fertility and family-building support through Carrot, lunch, snacks, coffee, a discretionary benefit stipend, and free alphorn lessons. We also support equity participation for eligible full-time employees, subject to plan terms and policies.

last updated 40 week of 2026