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.

Python · AWS

4 years of experience, Machine Learning, Deep Learning, Python, TensorFlow, PyTorch, AWS Certified Machine Learning Specialty, Algorithms, Apache Spark, Natural Language Processing, CI/CD, Model Deployment

HPHP develops personal computers, printers, 3D printing systems, software and workplace services.

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 provides payment orchestration infrastructure for global merchants and financial institutions.

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

Reka AIReka AI, Inc. builds multimodal foundation models and AI infrastructure for organizations and enterprises.

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 builds forms, surveys, and quizzes used by 150,000+ businesses to collect customer data and feedback.

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 builds accelerated-computing platforms for AI, data centers, gaming, robotics and autonomous vehicles.

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 builds accelerated-computing platforms for AI, data centers, gaming, robotics and autonomous vehicles.

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 an online therapy platform connecting members with licensed therapists by video, phone, chat and messaging.

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 provides payment orchestration infrastructure for global merchants and financial institutions.

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 builds a privacy-focused browser, search engine, AI assistant and opt-in ad network.

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

ElevenLabsElevenLabs builds AI voice, conversational-agent, creative-media, and developer API products.

Python · SQL

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

AppFollowAppFollow is a B2B SaaS platform specializing in app store optimization and review management, serving mobile app developers and businesses globally, with a remote team primarily based in Europe.