Remote Machine Learning Engineer jobs open to Spain.

Python

5 years of experience, Production Python, Operationalizing LLM systems, Post-training experience, Model gateways, Inference optimization, GPU infrastructure, Database architectures, Observability tooling, Shipping ML into regulated environments

Horizon3 AIHorizon3.ai is a remote cybersecurity company specializing in the NodeZero autonomous pentesting SaaS platform, serving global enterprises and federal agencies in the B2B sector.

Python · AWS

4 years of experience, ML engineering, Deep learning, Transformer models, PyTorch, Post-training large language models, Agentic systems design, Evaluation systems for open-ended tasks, Reasoning over messy real-world data, Production-quality Python code, Data pipelines, Distributed systems, AWS, Collaboration with attack and detection engineers, Independent research on unfamiliar systems, Technical documentation, Detection engineering, Security control planes, Causal inference, Graph reasoning, Automation in production systems, Adversarial robustness, ML in multi-tenant SaaS

Horizon3 AIHorizon3.ai is a remote cybersecurity company specializing in the NodeZero autonomous pentesting SaaS platform, serving global enterprises and federal agencies in the B2B sector.

5 years of experience, MLOps framework, Model serving frameworks, Streaming systems, Containerization and orchestration, Observability tooling, LLM and agent frameworks, Fintech experience, Cloud ML platforms

YunoYuno is a global payment orchestration platform headquartered in [location], specializing in B2B payment infrastructure that enables businesses to integrate over 1,000 payment methods through a single API.

Deep learning model training, PyTorch, JAX, Machine learning algorithm implementation, Fast-paced environment adaptability, Collaborative work style

Python · AWS · Kubernetes

4 years of experience, Generative AI applications, Large language models, RAG systems, Python, FastAPI, PyTorch, MLflow, AWS, Docker, Kubernetes, Kafka, Vector databases, Automated evaluation pipelines, AI security, B2B SaaS experience

TypeformTypeform is a Barcelona-based SaaS company specializing in interactive online form building and survey solutions for businesses globally.

Kubernetes · Docker

5 years of experience, Physical AI solutions, Hyperscaler infrastructure, Machine learning, Deep learning, Data science, Large scale distributed DL training, Inference pipeline optimization, Model compression techniques, Docker, Kubernetes, Singularity

NVIDIANVIDIA Corporation is a Santa Clara-based technology company specializing in designing GPUs and AI solutions for gaming, professional visualization, and cloud services, operating in both B2B and B2C markets globally.

7 years of experience, Large-scale distributed training, Alignment of Neural Networks, Megatron-LM, NeMo, Reinforcement Learning (RL), HPC environments, Multi-node GPU clusters, Fine-tuning with RLVR, Expert load balancing, Speculative decoding for MoE inference, AI Datacenter experience, Published work in distributed training

NVIDIANVIDIA Corporation is a Santa Clara-based technology company specializing in designing GPUs and AI solutions for gaming, professional visualization, and cloud services, operating in both B2B and B2C markets globally.

Python · SQL

6 years of experience, Machine learning, Deep learning, Neural networks, Statistical modeling, Tree-based methods, Boosting, Regression, Dimensionality reduction, Personalization systems, Recommendation systems, Operations research, Mathematical modeling, Linear programming, Integer programming, Discrete event simulation, Large language models, Fine-tuning methods, Reinforcement learning from human feedback, Python, SQL, Data pipelines, Machine learning libraries/tools, Mentoring, Agile environments

BetterHelpBetterHelp is a global B2C online mental health platform headquartered in Purchase, NY, offering subscription-based therapy services through licensed professionals via various digital communication methods.

Python

real-time inference, developer-facing infrastructure, open-source contributions to Python, async Python, distributed systems, voice and conversational AI, LLMs or multimodal models in production, streaming protocols (WebSockets/WebRTC), ASR, TTS, or end-to-end speech models, audio pipeline knowledge

Hugging FaceHugging Face is a New York City-based AI and machine learning platform providing SaaS tools for model sharing and collaboration, targeting both B2B and B2C markets globally.

Python · Kotlin

8 years of experience, Production LLM systems, Agentic systems expertise, Multilingual conversational AI, AI evaluation and safety, Python for AI/ML, Backend engineering (Go/Kotlin), Model serving in cloud environments, Technical leadership in AI projects, Payments or fintech experience

YunoYuno is a global payment orchestration platform headquartered in [location], specializing in B2B payment infrastructure that enables businesses to integrate over 1,000 payment methods through a single API.

Python

Secure AI experience, AI security publication record, Python coding skills, Experience with ML frameworks (PyTorch, JAX), Training and evaluating large language models, Familiarity with security principles (information flow control, access control), Experience with adversarial evaluations, Knowledge of AI systems and security evaluation, Experience with confidential computing and ZKP/SMPC protocols

BraveBrave is a privacy-focused web browser headquartered in an unspecified location, offering B2C services that include ad blocking, a crypto wallet, and a private search engine for a global audience.

GPU programming, Inference optimization, Real-time ML model deployment, Performance profiling, Latency-sensitive applications

ElevenLabsElevenLabs is a Poland-based AI voice technology company specializing in advanced speech synthesis and audio solutions for a global market, operating in both B2B and B2C contexts.

Python · SQL

5 years of experience, Python, ML/NLP, LLM experience, Prompt engineering, RAG, Fine-tuning, PyTorch, Hugging Face, FastAPI, SQL, Model quality evaluation

Python

MLOps expertise, Edge inference & compilation, Python tooling, Infrastructure-as-Code, CI/CD, Systems thinking, Collaboration with embedded engineers, Problem-solving initiative

HudlHudl is a Lincoln-based B2B sports analytics company providing video analysis tools for youth, amateur, and professional teams across various sports.

ML Deployment Mastery, Cloud Platforms, Core Stack Expertise, Tooling & Infrastructure, Architecture & Integration, Problem Solving, Cross-Functional Collaboration, Business Alignment

CoderioCoderio is a remote-first B2B tech company specializing in IT staff augmentation and scalable digital solutions for global businesses.

Python

4 years of experience, Autonomous AI agents in production, Context engineering, Agent frameworks: LangChain, LangGraph, CrewAI, AutoGPT, RAG systems on vector databases, Python and AI/ML libraries, Integrating LLMs via API, AI governance and model lifecycle management, Implementing Model Context Protocol (MCP), AI guardrails and safety tooling