25 Part-time jobs for English speakers in Spain
Spanish Language Learner (Remote | $30–$42/hr)
- Synthires
- castro e marzán
- September 5
- remote work
- part-time
Spanish Learner role for a short-term project capturing authentic learning experiences. Participate in recorded, one-on-one Spanish sessions with tutors, focusing on natural conversation and speaking practice. Requires active Spanish learning and native English fluency.
Spanish Speaking Practice Participant (Remote | $30–$42/hr)
- Synthires
- castro e marzán
- September 5
- remote work
- part-time
Spanish Learner role for a short-term project capturing authentic learning experiences. Participate in recorded, one-on-one Spanish sessions with tutors, focusing on natural conversation and speaking practice. Requires active Spanish learning and native English fluency.
AI Software Engineer (Remote | $60–$120/hr)
- Synthires
- castro e marzán
- September 5
- remote work
- part-time
AI Software Engineer needed for advanced AI research. Develop Reinforcement Learning environments to test AI models on software engineering workflows. Requires proficiency in C++, Python, Java, Go, TypeScript, or Rust, plus strong algorithmic knowledge.
Machine Learning Engineer (Remote | $60–$120/hr)
- Synthires
- castro e marzán
- September 5
- remote work
- part-time
AI Engineer role developing Reinforcement Learning environments to test AI models on software engineering workflows. Requires strong proficiency in C++, Python, Java, Go, TypeScript, or Rust, plus expertise in algorithms and performance optimization.
English Teacher - Profesor de inglés
- Coonerang Language School
- Madrid
- September 4
- part-time
Coonerang Language School seeks two English teachers for the 2026–2027 academic year. Candidates need relevant experience, a C1 English level, and teaching experience with age groups 6–11, 12–17, or 18+.
Executive Ghostwriter – Jabroni Capital
- Jabroni Capital
- Madrid
- September 4
- remote work
- part-time
Executive Ghostwriter needed to create unique, viral LinkedIn content for 4 accounts. Transform raw thoughts into polished, high-performing posts, memes, and shitposts. Must understand virality and tech culture.
X / Twitter Ghostwriter – Jabroni Capital
- Jabroni Capital
- Madrid
- September 4
- remote work
- part-time
Write unique, viral content for client X accounts, producing 45 posts monthly. Manage comments and replies, and transform raw thoughts into polished, high-performing posts. Must understand X virality and tech culture.
Enterprise Systems Digital Assurance Specialist
- Werfen
- Catalonia
- September 3
- part-time
Supports Corporate QA IT in maintaining compliance and inspection readiness for IT systems. Focuses on technical assurance for platforms (cloud/Kubernetes), documentation review, and audit readiness. Requires IT background and experience with platforms/operations.
Machine Learning Engineer (Remote | $60–$120/hr)
- Synthires
- Vitoria-Gasteiz
- September 2
- remote work
- part-time
Experienced Software Engineers are needed to design and develop Reinforcement Learning environments for AI model evaluation. Proficiency in Python, Java, C++, Rust, or TypeScript is required. Focus on debugging, refactoring, and performance optimization.
Machine Learning Engineer (Remote | $60–$120/hr)
- Synthires
- Cequelinos
- September 2
- remote work
- part-time
Experienced Software Engineers are needed to design and develop Reinforcement Learning environments for AI model evaluation. Proficiency in Python, Java, C++, Rust, or TypeScript is required. Focus on debugging, refactoring, and performance optimization.
Machine Learning Engineer (Remote | $60–$120/hr)
- Synthires
- Chazo
- September 2
- remote work
- part-time
Experienced Software Engineers are needed to design and develop Reinforcement Learning environments for AI model evaluation. Proficiency in Python, Java, C++, Rust, or TypeScript is required. Focus on debugging, refactoring, and performance optimization.
Machine Learning Engineer (Remote | $60–$120/hr)
- Synthires
- Spain
- September 2
- remote work
- part-time
Experienced Software Engineers are needed to design and develop Reinforcement Learning environments for AI model evaluation. Proficiency in Python, Java, C++, Rust, or TypeScript is required. Focus on debugging, refactoring, and performance optimization.
Machine Learning Engineer (Remote | $60–$120/hr)
- Synthires
- Valencia
- September 2
- remote work
- part-time
Experienced Software Engineers are needed to design and develop Reinforcement Learning environments for AI model evaluation. Proficiency in Python, Java, C++, Rust, or TypeScript is required. Focus on debugging, refactoring, and performance optimization.
AI Software Engineer (Remote | $60–$120/hr)
- Synthires
- Vitoria-Gasteiz
- September 2
- remote work
- part-time
Experienced AI/Software Engineer needed for contract role. Develop RL environments to test AI models on software workflows, focusing on debugging, refactoring, and optimization. Proficiency in C++, Python, Java, Go, TypeScript, or Rust is required.
AI Software Engineer (Remote | $60–$120/hr)
- Synthires
- Cequelinos
- September 2
- remote work
- part-time
Experienced AI/Software Engineer needed for contract role. Develop RL environments to test AI models on software workflows, focusing on debugging, refactoring, and optimization. Proficiency in C++, Python, Java, Go, TypeScript, or Rust is required.
AI Software Engineer (Remote | $60–$120/hr)
- Synthires
- Spain
- September 2
- remote work
- part-time
Experienced AI/Software Engineer needed for contract role. Develop RL environments to test AI models on software workflows, focusing on debugging, refactoring, and optimization. Proficiency in C++, Python, Java, Go, TypeScript, or Rust is required.
AI Software Engineer (Remote | $60–$120/hr)
- Synthires
- Chazo
- September 2
- remote work
- part-time
Experienced AI/Software Engineer needed for contract role. Develop RL environments to test AI models on software workflows, focusing on debugging, refactoring, and optimization. Proficiency in C++, Python, Java, Go, TypeScript, or Rust is required.
AI Software Engineer (Remote | $60–$120/hr)
- Synthires
- Valencia
- September 2
- remote work
- part-time
Experienced AI/Software Engineer needed for contract role. Develop RL environments to test AI models on software workflows, focusing on debugging, refactoring, and optimization. Proficiency in C++, Python, Java, Go, TypeScript, or Rust is required.
Math and Science Teacher
- European International School of Barcelona
- Catalonia
- August 29
- part-time
Passionate Math and Science Teacher needed for Secondary team. Responsibilities include planning and delivering engaging lessons for ESO, National Baccalaureate & IB. Requires a Bachelor's degree in a related field and two years of experience.
Learning Support Teacher
- ES American School
- Catalonia
- August 28
- part-time
Experienced Learning Support Specialist needed for a part-time role starting September 2026. Ensure individual needs are met for students requiring support, either 1:1 or in the classroom. Fluency in English and a valid Spanish work permit are essential.










