Software Engineer – LLM Systems

🕒 January 8

🇺🇸 United States – Remote

💵 $180k - $220k / year

⏰ Full Time

🟡 Mid-level

🟠 Senior

🧑‍💻 Full-stack Engineer

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NewtonX

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2016

🤝 B2B

☁️ SaaS

B2B • SaaS

NewtonX is a full-service B2B market research company that connects enterprise decision-makers with verified subject-matter experts and actionable insights. Using an AI-driven NewtonX Graph to search a global pool of professionals and a SaaS platform (NewtonX Hub) for transforming raw survey data into analysis, they provide custom quantitative, qualitative, and hybrid research, expert recruitment, and research consulting across numerous industries. NewtonX emphasizes 100% ID-verified samples, fast custom recruiting, and research methodologies like brand & communications, product research, customer segmentation, and market opportunity studies.

📋 Description

• Own the core LLM infrastructure powering two products redefining B2B research: Hub and Prime. • Build self-serve features that compress weeks into days: question → expert insight → follow-up, powered by RAG and adaptive workflows. • Architect automated systems that continuously capture expert opinions—creating longitudinal datasets and refreshable dashboards that compound in value. • Fuse structured survey data with unstructured expert knowledge, build semantic search across proprietary corpora, and create AI pipelines that maintain research-grade quality at scale.

🎯 Requirements

• 3-4 years of experience shipping production code in a fast-paced environment • Full-stack expertise: Moderate proficiency in React, TypeScript, and modern frontend frameworks. • Backend experience with Python, Node.js, or similar • AI/ML implementation experience: Hands-on experience integrating LLMs, building with OpenAI/Anthropic APIs, or implementing ML models in production. • Experience with AWS, Docker, and modern deployment practices • Experience with testing, code reviews, and maintaining high code quality standards • Ability to translate user needs into technical solutions while maintaining engineering best practices.

🏖️ Benefits

• Excellent medical, dental, and vision insurance. • 401k match with immediate vesting. • Generous Paid time off, holidays, and parental leave. • A diverse, collaborative, and positive culture where we invest in and celebrate each other’s success. • Flexible work environment where we work hard but have fun (happy hours, team projects, and retreats).