Founding Engineer

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Sierra

WebsiteLinkedInAll Job Openings

51 - 200 employees

🤖 Artificial Intelligence

🤝 B2B

☁️ SaaS

Artificial Intelligence • B2B • SaaS

Sierra is a company that specializes in transforming customer experiences through the power of conversational AI. Their platform enables businesses to deploy AI agents that are empathetic, always available, and aligned with the brand's tone and voice. Sierra offers capabilities for real-time support, seamless integration into existing technology stacks, and the capacity to solve complex issues while continuously improving the customer experience. Trusted by leading brands, Sierra's AI platform is designed with a strong commitment to security and privacy, ensuring safe and secure interactions. The platform allows for personalization, enabling companies to imbue their AI agents with their own identity and processes, ensuring consistency and reliability across all customer interactions.

📋 Description

• Write production and prototype code across the stack • Stand up MVPs and working demos quickly and validate them with real data or real users • Build internal tools and lightweight automation • Ship integrations with devices, sensors, and third-party services • Turn open technical questions about models, hardware, and open-source components into working evidence • Run end-to-end experiments, measure results, document findings, and recommend decisions • Experiment hands-on with humanoid robots • Evaluate build-versus-buy-versus-integrate decisions and defend recommendations • Answer technical questions from the CEO and business stakeholders • Advise leadership on feasibility, effort, and risk • Push back on scope creep and unrealistic timelines • Support technical narratives for decks and funding rounds • Help establish the foundation for hiring and leading additional engineers

🎯 Requirements

• 5+ years building software professionally, with a track record of shipping products used by real people • Strong hands-on engineering skills; comfortable across the stack and deep in at least one area • Practical AI/ML fluency, including experience with LLMs, speech, or perception systems and understanding their limitations • Experience taking a product from zero to a working first version in an ambiguous environment without a dedicated team • Excellent written and verbal communication • Autonomy and ownership; ability to prioritize without a groomed backlog • Willingness and ability to travel to the US a couple of times a year • Preferred: experience with robotics, humanoids, embodied AI, IoT, or connected devices • Preferred: comfort with edge deployment, audio pipelines, sensors, and on-device inference • Preferred: experience alongside distributed engineering teams • Preferred: early-stage startup background • Preferred: product instinct • Preferred: technical discipline background or equivalent self-taught technical depth • Advanced to Fluent English skills • Must be Brazilian and/or currently living in Brazil • Must provide a link to something built end-to-end

🏖️ Benefits

• $100k–$150k base compensation • Equity • Remote work from Brazil • Opportunity to evolve into technical leadership and hire and lead other engineers • Opportunity to work hands-on with robotics and hardware • Travel to the US a couple of times a year to work with the team and hardware