Software Engineer – LLM Systems

Job not on LinkedIn

🕒 January 8

🇺🇸 United States – Remote

💵 $180k - $220k / year

⏰ Full Time

🟡 Mid-level

🟠 Senior

🗣️ LLM Engineer

🦅 H1B Visa Sponsor

This company has sponsored H1B visas in the past.

👻 Ghost score 41%

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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NewtonX

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2016

💼 Consulting

📣 Marketing

☁️ SaaS

Consulting • Marketing • 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).