Straiker

AI-native security for agentic applications, built from the ground up with fine-tuned models to protect and secure every layer of your agentic AI stack. Not just the prompt layer.

straiker.ai

Straiker

AI-native security for agentic applications, built from the ground up with fine-tuned models to protect and secure every layer of your agentic AI stack. Not just the prompt layer.

straiker.ai

HQUS

Team Size38

Open Jobs2

Total Funding-

Latest FundraiseUnknown

TL;DR

What they do: AI-native security for agentic AI applications (continuous red-teaming and real-time guardrails)

Founded / HQ: Founded by AI and cybersecurity veterans; headquartered in Sunnyvale, CA

Flagship products: Ascend AI (automated continuous red teaming) and Defend AI (real-time runtime guardrails)

Funding: $21M Series A announced Mar 27, 2025 (Lightspeed Venture Partners, Bain Capital Ventures)

Employee count: Approximately 38

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Company Overview

Problem Domain

Security for agentic AI applications and chatbots (runtime safety, prompt-injection mitigation, automated red-teaming).

Industry

Cybersecurity / AI security

Funding Track Record

Series A- 2025-03-27

$21M

Announced launch from stealth with this round

Investor Signal

“Top-tier venture backing (Lightspeed Venture Partners and Bain Capital Ventures)”

Founders

What we do

Join the Team

AI Engineer

HybridSan Francisco Bay Area, US

Hybrid • San Francisco Bay Area, US

Your talent is powerful, protect it wisely with us!

AI is the biggest technology shift of our lifetime as it reshapes how people work and play! At Straiker , our mission is to ensure businesses can embrace AI with confidence. Founded by seasoned AI & Security entrepreneurs and backed by premier venture partners like Lightspeed and Bain capital, we’re building highly fine tuned AI technology to protect enterprises against the next-generation of AI threats. If you are a dreamer, self-starter, high IQ - low ego individual and want to join us in our mission to secure the future with AI, Straiker is the right place for you. Are you in?

About the Job:

Job Title: AI Engineer / Sr AI Engineer

Location: SF Bay Area (Hybrid — 3 days onsite at HQ). Willing to pay for relocation.

Job Type: Full-Time

As an AI Engineer at Straiker, you will play a key role in developing, fine-tuning, and deploying advanced AI models. This includes fine tuning LLMs to provide guard rails and other mechanisms that enable safety and security. You may also assist and contribute to adversarial LLM red teaming, developing tools and procedures as well as using AI to find security and safety vulnerabilities in GenAI applications. The ideal candidate has a strong background in machine learning, deep learning, and natural language processing, with hands-on experience in fine-tuning large models for various applications.

Key Responsibilities:

Qualifications:

Bachelor’s or Master’s degree in Computer Science, Artificial Intelligence, Machine Learning, or a related field.
4+ years of experience in AI, machine learning, or deep learning, with a focus on NLP and LLMs. 2+ years may be sufficient with a PhD.
Proven experience in fine-tuning and deploying Large Language Models (e.g., GPT, BERT, T5) for various applications.
Strong programming skills in Python and familiarity with ML frameworks such as TensorFlow, PyTorch, or similar.
Experience with data preprocessing, model evaluation, and performance optimization.
Knowledge of cloud platforms (e.g., AWS, Azure, Google Cloud) and MLOps practices is a plus.

Preferred Qualifications:

Experience in applied research or contributions to open-source projects in the AI/ML domain.
Familiarity with reinforcement learning, transfer learning, or other advanced machine learning techniques.
Knowledge of distributed computing and large-scale model training.

Teeming tracks opportunities at over 24,000 AI startups, then works with you to find (and land) the one you'll love.

Product Designer

Part-timeCambridge, GB

Part-time • Cambridge, GB

Backend Developer

Full-timeSan Francisco, US

Full-time • San Francisco, US

Data Scientist

ContractNovi Sad, RS

Contract • Novi Sad, RS

Technical Writer

Full-timeNew York, US

Full-time • New York, US

Mobile Developer

Full-timeNiš, RS

Full-time • Niš, RS

Backend Developer

Part-timeTel Aviv

Part-time • Tel Aviv

Data Preparation: Work with large datasets to prepare and preprocess data for model training and fine-tuning.

Fine-Tuning & Optimization: Implement fine-tuning techniques to adapt pre-trained LLM models to new tasks and domains, ensuring high performance and accuracy.

Integration & Deployment: Collaborate with engineering teams to integrate AI models into existing systems and deploy them in production environments.

SW Skillset/Backend Development : While not the primary role, responsibilities/contributions include: Design, develop, and maintain scalable backend systems and APIs using Python/Golang, ensuring they meet project and performance requirements.

Research & Innovation: Stay up-to-date with the latest research and advancements in AI, LLMs, and fine-tuning techniques, and apply them to improve existing solutions.

Performance Monitoring: Monitor and evaluate model performance, troubleshoot issues, and optimize for speed and scalability.

Collaboration: Work closely with data scientists, engineers, and product teams to understand project goals and deliver AI solutions that drive business value.

Excellent problem-solving skills and the ability to work independently or in a team environment.

Strong communication skills, with the ability to articulate complex technical concepts to non-technical stakeholders.