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Careers at SignalFire
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Principal AI/ML Engineer - VC Backed Startups

$170,000 - $270,000/year
4 Nov 2025
California, USA
Verified by Turrior

Content + Source + Freshness • 11 Dec 2025 • 95% confidence

90 / 100

Offer value

Strong value driven by high compensation, leadership expectations, and significant influence over AI strategy.

  • Salary range: $170,000–$270,000/year
  • Scope to shape AI strategies and impact tech innovation
  • Ideal for experienced AI/ML professionals
Pros
  • Highly competitive salary of $170K - $270K with equity opportunities
  • Influence over cutting-edge AI systems and strategies
  • Opportunity for meaningful work in advancing AI solutions
Cons
  • High demands associated with shaping AI strategies
  • Requires substantial experience in advanced machine learning
  • Potential challenges associated with startup instability

Who it's for

Lead / Principal • Hybrid with remote potential

Good fit
  • Experienced AI/ML engineers looking to lead
  • Professionals with deep interest in transformative AI technologies
  • Candidates ready to take on significant technical challenges
Not recommended for
  • Junior engineers new to AI/ML environments
  • Those uncomfortable in fast-paced startup cultures
  • Individuals not ready for high-stakes responsibilities in tech strategy

Motivation fit

Desire to lead AI innovation at startupsInterest in applying advanced AI research to real-world problemsDrive to improve AI operational efficiency

Key skills

Deep understanding of machine learning frameworks and techniquesLeadership capability in AI and tech teamsExperience in deploying AI systems and pipelinesStrong analytical skills for problem-solving
Score: 90/100 AI verified analysis

About the job

Location

Bay Area - Hybrid

Employment Type

Full time

Location Type

Hybrid

Department

EPDEngineering

Compensation

  • $170K – $270K • Offers Equity

Join SignalFire’s Talent Network for Principal AI/ML Engineer Roles at VC-Backed Startups

At SignalFire, we partner with top early-stage startups that are shaping the future of technology. Our portfolio spans 200+ innovative companies across AI, cybersecurity, healthtech, fintech, developer tools, and enterprise SaaS.

We’re looking to connect with exceptional Principal AI/ML Engineers who are excited about driving AI strategy, advancing machine learning research, and scaling AI-powered systems at high-growth startups. By joining SignalFire’s Talent Network, your profile will be shared with our portfolio companies, giving you visibility into exclusive early-stage opportunities that may not be publicly listed.

💡 This is not an application for a specific job. Instead, this is a way to get on the radar of VC-backed startups that are actively hiring AI/ML talent. If you have any questions, please direct inquiries to talentnetwork@signalfire.com.

Who Should Join?

We’re looking for AI/ML experts who are:
✔ Passionate about developing and deploying cutting-edge machine learning and deep learning models
✔ Experienced in architecting scalable AI systems and leading technical teams
✔ Excited to push the boundaries of AI research and apply it to real-world business challenges

Typical Roles & Responsibilities

  • Architect, develop, and optimize machine learning and deep learning models for production systems

  • Research and apply state-of-the-art AI methodologies, including LLMs, transformers, and reinforcement learning

  • Lead AI strategy, identifying opportunities for innovation and model optimization

  • Develop scalable training and inference pipelines for AI-powered applications

  • Work closely with engineering, data, and product teams to integrate AI/ML into business solutions

  • Optimize ML models for efficiency, accuracy, and scalability in real-world deployments

  • Ensure robust MLOps practices, including model monitoring, retraining, and deployment automation

  • Collaborate on AI/ML research publications, patents, and open-source contributions

Common Qualifications

While each startup has its own hiring criteria, many Principal AI/ML Engineer roles in our network look for:

  • 8+ years of experience in AI/ML, deep learning, or applied AI

  • Expertise in Python and ML frameworks (TensorFlow, PyTorch, JAX, Hugging Face Transformers)

  • Strong background in computer vision, NLP, generative AI, or reinforcement learning

  • Experience developing scalable AI pipelines, data processing workflows, and distributed training systems

  • Familiarity with big data tools (Apache Spark, Kafka, Hadoop) and MLOps platforms (MLflow, TFX, SageMaker)

  • Deep understanding of LLMs, transformer architectures, and retrieval-augmented generation (RAG) pipelines

  • Experience with model quantization, fine-tuning, and optimization for performance

  • Strong knowledge of cloud environments (AWS, GCP, Azure) and containerization tools (Docker, Kubernetes)

  • A track record of technical leadership, mentoring, and driving AI innovation

💡 Technologies You Might Work With:

  • Languages & Frameworks: Python, TensorFlow, PyTorch, JAX, Hugging Face Transformers

  • MLOps & Data Pipelines: MLflow, Kubeflow, TFX, Apache Spark, Airflow, Ray

  • Cloud & Deployment: AWS SageMaker, GCP Vertex AI, Azure ML, Kubernetes, Docker

  • Big Data & Storage: Apache Kafka, Hadoop, BigQuery, Snowflake, Redis, NoSQL databases

  • Model Optimization: ONNX, TensorRT, pruning, quantization, distillation

What Happens Next?

  1. Submit your application to join SignalFire’s Talent Ecosystem.

  2. We review applications on an ongoing basis to identify strong candidates.

  3. If there’s a match, a SignalFire talent partner or a leader from one of our startups may reach out directly.

  4. No match yet? We’ll keep your profile on file for future AI/ML roles in our portfolio.

Compensation Range: $170K - $270K

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