AI Machine Learning R&D Engineer

Senior Manager, Global Talent Acquisition - Corporate at Welocalize As a trusted global transformation partner, Welocalize accelerates the global business journey by enabling brands and companies to reach, engage, and grow international audiences. Welocalize delivers multilingual content transformation services in translation, localisation, and adaptation for over 250 languages with a growing network of over 400,000 in‑country linguistic resources. Driving innovation in language services, Welocalize delivers high‑quality training data transformation solutions for NLP‑enabled machine learning by blending technology and human intelligence to collect, annotate, and evaluate all content types. Our team works across locations in North America, Europe, and Asia serving our global clients in the markets that matter to them. To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. Main Purpose of Job The AI Machine Learning Research & Development Engineer is responsible for the design, development and implementation of machine learning solutions to serve our organization. This includes ownership or oversight of projects from conception to deployment with appropriate AWS services, Docker, ML Flow, and other. The role also includes responsibility for following best practices with which to optimise and measure the performance of our models and algorithms against business goals. Main Duties Design and develop machine learning models and algorithms for various aspects of the localisation and business workflow processes, including machine translation, LLM fine‑tuning, and quality assurance. Take ownership of key projects from definition to deployment, ensuring that they meet technical requirements and maintain momentum and direction until delivery. Evaluate and select appropriate machine‑learning techniques and algorithms to solve specific problems. Implement and optimise machine learning models and technologies using Python, TensorFlow, and other relevant tools and frameworks. Perform statistical analysis and fine‑tuning using test results. Deploy machine learning models and algorithms using appropriate techniques and technologies, such as containerisation using Docker and deployment to cloud infrastructure. Use AWS technologies (including but not limited to SageMaker, EC2, S3) to deploy and monitor production environments. Keep abreast of developments in the field, with a dedication to learning in the role. Document diligently and communicate thoughtfully about ML experimentation, design, and deployment. Project scope: Define and design solutions to machine learning problems. Integration with larger systems done with the guidance of more senior engineers. Success Indicators for a Machine Learning Engineer Effective Model Development – models accurate, efficient, and aligned with project requirements. Positive Team Collaboration – collaboration effectiveness with various teams and stakeholders. Continuous Learning and Improvement – commitment to learning new techniques. Clear Communication – articulate findings, challenges, and insights to stakeholders. Ethical and Responsible AI Development – adherence to ethical AI practices. Requirements Education : Master’s degree in Computer Science, Data Science, Engineering, Mathematics, or a similar field; PhD a plus. Experience : Minimum 3+ years as a Machine Learning Engineer or similar role. Skills & Knowledge : Ability to write robust, production‑grade code in Python. Excellent communication and documentation skills. Strong knowledge of machine learning techniques and algorithms, including supervised and unsupervised learning, deep learning, and reinforcement learning. Hands‑on, high proficiency experience with machine learning frameworks such as TensorFlow, PyTorch, and Scikit‑learn. Experience with natural language processing (NLP) techniques and tools. Strong communication and collaboration skills to explain complex technical concepts to non‑technical stakeholders. Experience taking ownership of projects from conception to deployment, and mentoring junior team members. Hands‑on experience with AWS technologies, including EC2, S3, and other deployment strategies. Experience with SNS, SageMaker, and pl. Experience with ML management technologies and deployment techniques, such as AWS ML offerings, Docker, GPU deployments, etc. Welocalize is committed to equal opportunities and in compliance with the General Law on the Rights of People with Disabilities; this vacancy is also available and we encourage those candidates who have a disability certificate (equal to or greater than 33%) to apply. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analysing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgement. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us. Location: Madrid, Community of Madrid, Spain #J-18808-Ljbffr