The English-language job board for Spain

Machine Learning (ML) Engineer

On-site in Barcelona·Added 1 month ago (last checked 6 Nov)

Keysight

20 open roles

Apply

Our summary

Work mode: On-site, Barcelona
English: Required
Experience: 5+ years
Education: Master's degree

Visa options

The ad doesn’t mention sponsorship
Not a refusal, but not a yes. Worth asking in your first message.

Find jobs with visa support

Skills

Requirements

What we're looking for

5+ years building production ML or data-intensive systems.
Demonstrated experience building RAG and knowledge graph systems in production (a must): ingestion, indexing, and retrieval pipelines.
Hands-on expertise with LLMs: embeddings, fine-tuning, prompt and context engineering, evaluation, and open-weights models for on-prem inference.
Strong command of vector databases, graph databases, and low-latency retrieval infrastructure at scale.
Experience with agentic memory management and the Model Context Protocol (MCP) or comparable agent-grounding interfaces.
Proficiency in Python and modern ML frameworks (PyTorch, Hugging Face, etc..), with solid software engineering and API design practices.

Nice to have

ML applied to semiconductor applications, especially the RF and microwave industry, is highly valued.
Familiarity with data governance, access control, and provenance in IP-sensitive or regulated environments is a plus.

Education & certifications

MS or PhD in Computer Science, Electrical Engineering, or related field

The role

We are looking for a Machine Learning (ML) Engineer to join our industry-leading data and IP management product team to build the knowledge and intelligence layers of SOS AI, our AI platform serving the intersection between Electronic Design Automation (EDA) and AI/ML workflows.

What you'll do

Design and build low-latency hybrid retrieval (lexical, vector, graph, faceted) over large, heterogeneous data for on-premises, IP-sensitive deployments.
Develop the semantic insight layer: automated tagging, domain-aware metadata, and embeddings as first-class managed assets with version provenance.
Build the EDA-aware knowledge graph as organizational memory: entity and relationship inference, ontology evolution, versioning, and temporal queries.
Implement agentic memory and outbound MCP servers exposing retrieval, graph traversal, and lineage to external agents with access controls gatekeeping and full audit.
Engineer governance so access control propagates from source data through embeddings, graph nodes, retrievals, and agent responses.
Benchmark retrieval quality, embedding models, and LLMs against EDA use cases, selecting models per task under cost and latency constraints.
Collaborate with product, EDA tool teams and customers to translate semiconductor and RF workflows into requirements.

Hiring process

Recruiter screening, hiring manager review, then business interviews with the hiring manager and team before an offer 1 interview

About Keysight

Keysight Technologies is a global electronic measurement and test equipment company that designs, manufactures, and services electronic instruments and software for design, development, and testing across industries including aerospace, defense, automotive, and communications. With over 15,000 employees worldwide, Keysight serves customers in more than 100 countries, providing solutions that span from design simulation to manufacturing test and network visibility.

Keysight has a significant presence in Spain, with offices in Barcelona and Madrid supporting its European operations. The company is known for its engineering-driven culture, offering international professionals opportunities in R&D, software engineering, and customer-facing roles. For international hires, Keysight provides a multicultural work environment and career paths in cutting-edge areas like 5G/6G, AI, and cloud technologies.

Industry: Test and Measurement
Founded: 1939
Employees: 10,000–20,000
Headquarters: Santa Rosa, USA
In Spain: Barcelona

Good to know if you are moving

Keysight operates in a highly technical, engineering-driven environment where international professionals can find roles in R&D, software, and customer-facing positions.
The company has a significant R&D hub in Barcelona, Spain, which is a key center for its wireless and 6G research.
Keysight offers a global, multicultural work environment with English as the working language, easing the transition for international hires.
The company provides relocation support and visa sponsorship for international candidates in many locations.
Barcelona is a major tech hub in Southern Europe, offering a strong quality of life and a growing ecosystem for engineers.

In their own words

About the company & team

Keysight is at the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization. Our ~16,800 employees create world-class solutions in communications, 5G, automotive, energy, quantum, aerospace, defense, and semiconductor markets for customers in over 100 countries. Learn more about what we do.

Our award-winning culture embraces a bold vision of where technology can take us and a passion for tackling challenging problems with industry-first solutions. We believe that when people feel a sense of belonging, they can be more creative, innovative, and thrive at all points in their careers.