Explore AI roles · Updated daily

Search curated engineering roles across AI infrastructure, agents, machine learning, and product teams.

Keyboard friendly Save and share roles

About us Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diver...

Fulltime Remote Ai Ai Engineer

Fully remote

Senior AI Engineer AI Healthcare | Digital Twin + GenAI Remote, USA $200k – $220k + equity Join a fast-scaling, missi...

Remote Ai Ai Engineer Machine Learning

$200k - $220k · Senior Fully remote

Company Description Vitol is a leader in energy and commodities. Vitol produces, manages and delivers energy and comm...

Fulltime Machine Learning Ai

Fully remote

About Cartesia Our mission is to build the next generation of AI: ubiquitous, interactive intelligence that runs wher...

Fulltime Ai Machine Learning

$180k - $250k · Senior Fully remote

We’re looking for an AI Development Lead to own the technical execution of production-grade AI systems. This role com...

Fulltime Remote Ai Ai Engineer

$57k* · Senior Fully remote

We are seeking an experienced Data Scientist with strong expertise in Data Science, machine learning engineering with...

Fulltime Remote Machine Learning Data Science

Fully remote

AI Engineering and Data Science Intern Location Omaha, Nebraska (Aurora Cooperative office) About Aurora Cooperative ...

Internship Remote Ai Ai Engineer

Fully remote

Staff ML Engineer, ML Compute Platform About the Team: The ML Compute Platform is part of the AI Compute Platform org...

Fulltime Ai Machine Learning Robotics

$198k - $304k · Senior Fully remote

Company Description It started with a simple idea: what if surgery could be less invasive and recovery less painful? ...

Data Science Ai

$149k - $253k · Senior Fully remote

Movement Labs is an incubator and consulting firm that uses technology, data, and experimentation to stop fascism and...

Fulltime Remote Data Science Ai

$100k - $119k · Senior Fully remote

Job ID: 708827BR Date posted: Oct. 29, 2025 The Advanced Programs and Exploitation (APEX) team with Lockheed Martin i...

Fulltime Remote Ai

$93k - $164k · Senior Fully remote

LOCATION: Chicago - SECTOR: IT REFERENCE: 29257 AI Engineer Company Description: Our Proprietary trading client is lo...

Ai Ai Engineer Machine Learning Data Science

$29k* · Senior Fully remote

All Posting Locations: Glenview, IL, US Job Functions: Research & Development Date Published: January 5, 2026 Ref#: R...

Fulltime Remote Ai Data Science

$118k - $148k · Senior Fully remote

What to Expect At Tesla AI, you will have access to unparalleled resources that set us apart from other companies in ...

Fulltime Ai Ai Engineer Deep Learning

$140k - $420k · Senior Fully remote

ITHAKA's mission is to expand access to knowledge and education around the world. Our services — Artstor, JSTOR, Port...

Fulltime Internship Ai Machine Learning

Fully remote

Aleknagik Technology, LLC is searching for a qualified candidate to fill the role of Technical AI / ML Engineer. This...

Fulltime Ai Machine Learning

Fully remote

Come join the QB Live Data Science team as a Staff Data Scientist. Our team works cross functionally to improve and a...

Data Science Ai

$186k - $252k · Senior Fully remote

At CDW, we make it happen, together. Trust, connection, and commitment are at the heart of how we work together to de...

Fulltime Remote Ai Ai Engineer

$106k - $146k · Senior Fully remote

About the team: We are a fast-growing AI Engineering team, driving WEX's strategic vision to integrate artificial int...

Fulltime Internship Remote Ai

$68k - $89k · Senior Fully remote

Orbis Operations is seeking an experienced Data Scientist with a focus on training, building, and implementing Large ...

Fulltime Remote Ai Data Science

Fully remote

Selected role

AI Engineer

Ruby Labs GE, FR

Senior Full-time

About us

Ruby Labs is a leading tech company that creates and operates innovative consumer products. We offer a diverse range of opportunities across the health, education, and entertainment industries. Our innovative teams are driving the future of consumer-led products, and we're always looking for passionate individuals to join us. Learn more about our story at: https://rubylabs.com/about-us/

About the role

At RubyLabs, we’re seeking a senior AI Engineer (Node.js / Next.js / TypeScript) to shape our AI infrastructure and drive production-ready LLM experiences. You’ll work in a modern stack, making data-driven decisions around model performance, reliability, and cost.

You’ll own advanced prompt systems, structured outputs, and complex LLM workflows using LangChain or LlamaIndex. Observability, debugging, and evaluation are core to the role, leveraging Langfuse and AI gateways like OpenRouter to continuously improve model quality and operational efficiency. You’ll take full ownership of key AI features from experimentation to live production.

Key Responsibilities

Advanced Prompt Engineering: Designing complex, dynamic prompt templates with conditional logic and efficiently reusing information and context within prompts to maximize generation quality and reasoning.
Structured Outputs & Schemas: Implementing various response schemes (JSON mode, function calling, Zod/JSON schemas) to ensure AI outputs are predictable and ready for seamless integration into application logic.
Prompt Engineering & Evaluations: Building robust evaluation pipelines and using Langfuse to collect feedback and score the quality of responses in real time.
Tracing & Debugging: Performing deep debugging of complex LLM chains using Langfuse traces to identify bottlenecks and optimize for cost, latency, and context window usage.
AI A/B Testing: Running systematic experiments across different models via OpenRouter (e.g., comparing Claude 3.5 Sonnet vs. GPT-4o) and analyzing results based on quantitative metrics.
Data-Driven Decisions: Making deployment decisions for new prompts or models strictly based on quantitative benchmarks and trace data, rather than intuition.
Output Scoring & Analysis: Developing scoring systems to analyze the “Problem Solution” chain and identify root causes of hallucinations or logic errors using Langfuse analytics.
Model Performance & Fine-Tuning: Regularly re-evaluating model performance as new architectures emerge and performing fine-tuning when necessary to meet specific domain requirements.

Qualifications

Node.js & Next.js: Deep knowledge of the stack to build reliable services and handle complex LLM-generated data.
Dynamic Prompting Skills: Proven experience in building prompts where content is highly dependent on input variables and context injection.
OpenRouter Experience: Experience working with unified APIs, managing rate limits, and selecting the most cost-effective models for specific tasks.
Langfuse (or similar): Understanding of LLM observability principles — setting up tracing, creating test datasets, and integrating scoring systems.
Evaluation Methodology: Experience with frameworks like RAGAS or building custom “LLM-as-a-judge” systems.
Analytical Mindset: Ability to transform raw generation logs into actionable business metrics and technical insights.
Iterative Mindset: Focus on continuous product improvement through constant feedback loops.

Nice to have

Fine-Tuning: Practical experience in fine-tuning models for specific domain tasks or JSON compliance.
RAG Architecture: Understanding how to build and optimize Retrieval-Augmented Generation systems, including indexing, retrieval, and re-ranking.
Python: Basic knowledge for working with data science scripts or AI evaluation libraries.

Location

Ruby Labs operates within the CET (Central European Time) zone. Applicants from any country are welcome to apply for the position as long as they are located within approximately ± 4 hours of CET. This ensures optimal collaboration and communication during working hours.

Benefits

Discover the perks of being part of our vibrant team! We offer:

Remote Work Environment: Embrace the freedom to work from anywhere, anytime, promoting a healthy work-life balance.
Unlimited PTO: Enjoy unlimited paid time off to recharge and prioritize your well-being, without counting days.
Paid National Holidays: Celebrate and relax on national holidays with paid time off to unwind and recharge.
Company-provided MacBook: Experience seamless productivity with top-notch Apple MacBooks provided to all employees who need them.
Flexible Independent Contractor Agreement: Unlock the benefits of flexibility, autonomy, and entrepreneurial opportunities. Benefit from tax advantages, networking opportunities, reduced employment obligations, and the freedom to work from anywhere. Read more about it here: https://docs.google.com/document/d/1tzxGX4Uu7Ts_HCLFXESKLnKaaBfVCPf1f9AYZPrkjJM/preview?tab=t.0

Be part of our fast-growing team and seize this excellent opportunity for personal and professional growth!

Interview Process

After submitting your application, we conduct a thorough review which typically takes 3 to 5 days, but may occasionally take longer due to the volume of applications received. If we see a potential fit, we proceed with the following steps:

Recruiter Screening (40 minutes)
Technical Interview (60 minutes)
Final Interview (30 minutes)

Life at Ruby Labs

At Ruby Labs, we move fast, aim high, and expect the same from our team. We’re not here to play small—we’re here to build, grow, and win. That means we look for people who are ambitious, driven, and ready to give their best every single day.

This is a place for individuals who thrive under pressure, embrace challenges, and see opportunity in every obstacle. If you’re hungry to achieve, motivated by impact, and want to grow at the speed of your own ambition, Ruby Labs offers the platform to make it happen.

Here, effort is matched with reward. We recognize those who go all in and deliver results, and we create space for people who want more—more responsibility, more growth, and more success.

#LI-Remote

Showing 2861–2880 of 4,748 AI roles

1 … 142 143 145 146 238

Find your next AI role

AI Engineer

Senior AI Engineer

Senior Machine Learning Engineer - Agentic Workflow

Machine Learning Engineer, Data

AI Development Lead / AI Engineering Lead [J276]

Data Scientist

Intern for AI Engineering and Data Science

Staff Machine Learning Engineer, Compute

Sr Data Scientist Product Performance

Senior Data Scientist

Senior Research Scientist

Lead AI Engineer

Senior Principal Scientist, R D - Analytical Data Scientist

AI Engineer, Reinforcement Learning, Self-Driving

Intern, Machine Learning Engineering

Technical AI / ML Engineer

Staff Data Scientist

Sr AI Engineer I

PhD Intern - AI/ML/NLP Engineer

Data Scientist