The Lead Machine Learning Engineer/Scientist will design and build dynamic memory management systems for LLM applications, integrating structured and unstructured data, and improving AI performance through effective memory strategies.

Lead the development of Dynamic Memory Management systems for LLM applications, integrating memory architectures, retrieval strategies, and model training for improved AI performance.

Join Upwork's Data Infrastructure team as a Senior Database Automation Engineer, focusing on automating and managing database systems using Python and other technologies. Responsibilities include system design, database optimization, and incident response.

The role involves designing and developing backend systems, ensuring performance and scalability, and collaborating with teams to deliver solutions, primarily using Java or Kotlin.

Design and implement evaluation frameworks for AI systems, focusing on human+AI collaboration. Lead statistical analysis and benchmarking efforts, working cross-functionally to enhance AI model performance.

The Motion Design Systems Expert will establish reusable motion tokens, set guidelines, translate design principles into patterns, and enable team training.

The Lead AI Engineer will design and implement AI-powered data systems, focusing on agentic frameworks, NLP, and collaboration with data engineering teams.

As a Senior Applied Machine Learning Engineer, you will leverage machine learning techniques to enhance search relevance and personalize user recommendations, working with large-scale data to solve complex problems.

Design and implement Python-based automation frameworks for database lifecycle management, optimize relational database performance, and collaborate on API integrations in a 24/7 on-call rotation.

Seeking a Senior/Lead Front End Engineer to design and develop efficient web applications. Responsibilities include coding, testing, maintaining systems, optimizing performance, and collaborating with teams.

Seeking a Senior Lead Research Scientist to conduct research and engineering in autonomous AI, develop benchmarks, publish studies, and implement safe learning loops for agents.

The Payroll Manager oversees payroll operations, compliance, and reporting for the U.S. and international employees, ensuring accuracy and regulatory adherence. Responsibilities include managing payroll cycles, equity compensation, tax compliance, and process improvement, while collaborating with HR and Finance.

Lead configuration and optimization of Workday Benefits and Absence modules, collaborating with global teams to enhance processes and employee experience.

Manage the Voice of the Customer program by optimizing customer feedback systems and ensuring insights drive actions across the organization.

Upwork is hiring for various finance, accounting, and analytics roles in its new Lisbon hub, focusing on technical and back-office talent.

Upwork is opening a new hub in Lisbon for technical and back-office roles including product development and AI engineering.

Join Upwork's Talent Community for potential roles. Submit your resume to be contacted for future positions aligned with your skills.

Upwork is opening a new hub in Lisbon and is hiring for technical roles, focusing on AI/ML engineering, product development, design, and back-office positions.

Upwork is opening a new international hub in Lisbon, focusing on hiring technical talent for product development, design, engineering, and HR roles.

Lead the development of AI agents and infrastructure, collaborate with stakeholders, design APIs and SDKs, and advocate for best practices.