Full Stack Engineer, Ruby On Rails

🕒 March 28

🇧🇷 Brazil – Remote

💵 $60k - $110k / year

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

👻 Ghost score 70%

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

• Build a modern SaaS platform for CPG brands and manufacturers to manage lab testing and compliance • Work alongside the founding engineer and customers to build and refine the platform • Use systems architecture expertise to evaluate technical trade-offs and make informed decisions • Implement security best practices to safeguard data and application integrity • Take ownership of architecture decisions and implement critical features during the trial • Help shape the product from its outset

🎯 Requirements

• 4+ years of experience as a full stack engineer • Strong proficiency in Ruby on Rails, React, Tailwind CSS, and PostgreSQL • Bias to action and comfort with early-stage 0-to-1 execution • Mission alignment with increasing transparency in the food system • Excellent communication and interpersonal skills • Ability to see the big picture and solve problems autonomously • Previous experience in a developer role in high-growth startups • Advanced to Fluent English skills • Brazilian nationality and/or currently living in Brazil • Proven experience with at least two of Ruby on Rails, React, and Turbo/Stimulus • Updated CV in English • LinkedIn profile link and GitHub profile link

🏖️ Benefits

• Paid 3–4 week trial focused on a clearly scoped, high-impact project • Part-time schedule during the trial period • Dedicated check-ins for feedback, progress discussion, and expectation alignment