Founding Engineer

Job not on LinkedIn

🕒 July 15

🇧🇷 Brazil – Remote

💵 $6k - $8k / month

⏰ Full Time

🟡 Mid-level

🟠 Senior

🖥 Software Engineer

👻 Ghost score 33%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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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

• Audit, improve, and take full ownership of the product's existing codebase and architecture. • Build and ship features end-to-end using Python, FastAPI, SQLAlchemy, Alembic, WebSockets, and Next.js, making decisions across the entire stack. • Design and evolve the database schema, writing and maintaining Alembic migrations alongside SQLAlchemy models. • Build and maintain real-time features using WebSockets where appropriate. • Own infrastructure and deployment workflows on Railway, ensuring the platform remains reliable and scalable. • Write and maintain unit and integration tests to ensure the reliability and long-term maintainability of the product. • Work hand-in-hand with the founder daily, translating vision into shipped product. • Set technical direction and engineering best practices as the team's first engineer — your standards become the team's standards. • Collaborate with and mentor other developers as the engineering team grows.

🎯 Requirements

• 5–6 years of full-stack software engineering experience, with strong system architecture knowledge across front-end and back-end. • Strong professional experience with Python, FastAPI, SQLAlchemy, Alembic, WebSockets, and modern React frameworks such as Next.js. • Strong SQL skills and hands-on experience designing, querying, and optimizing PostgreSQL databases. • Experience designing relational databases and managing schema changes through Alembic migrations. • Experience building or maintaining real-time applications using WebSockets. • Proven experience writing and maintaining unit and integration tests, with a focus on building reliable, well-tested software. • Experience deploying and operating applications in cloud environments (experience with Railway is a plus). • Basic knowledge of AI/LLM technologies (e.g., OpenAI APIs, prompt engineering, retrieval, or AI-powered product features) is a plus, as we'll be building AI capabilities into the product over time. • Founder mindset — someone who challenges ideas, proposes better solutions, and takes ownership rather than simply executing tickets. • Experience building products from 0 to 1 in startup environments, comfortable moving quickly and wearing multiple hats. • Organized, proactive, and highly logical communicator. • Strong written and verbal English for daily collaboration with the founder.

🏖️ Benefits

• ~1% equity