Remote Machine Learning Engineer jobs open to Spain.

Deep learning optimization, GPU kernel development, Life sciences foundation models, Performance profiling tools, PyTorch, CUDA, High-performance computing, Transformers, Simulation applications, AI-assisted development tools, Open-source software development

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

Hands-on LLM work in production, Experience shipping ML systems to production, Rigorous evaluation approach, Strong ML fundamentals, Comfort with ambiguity, Solid engineering skills, Clear communication with technical and clinical stakeholders

Sword HealthSword Health is a Portugal-based digital health company specializing in AI-driven physical therapy solutions for musculoskeletal and pelvic health, operating primarily in the B2B sector with a global reach.

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 · SQL

5 years of experience, LLM specialization, Python, Automated testing strategies, Prompt engineering, RAG architectures, Data Analytics (SQL), Product mindset, Tech leadership, Complex project management

LodgifyLodgify is a Barcelona-based B2B vacation rental software provider specializing in management and marketing tools for property owners and managers in the global vacation rental industry.