31 freelance English-speaking jobs in Porto

Freelance optical engineer with Python experience needed to design and develop computationally intensive physics problems. Must have strong Python skills (Numpy, SciPy, Sympy) and experience with numerical simulation methods.

Location: Remote (Türkiye, Europe, USA, Canada) Type: Freelance (Only Commission-Based Structure) Language

Freelance AI trainer needed to design computationally intensive mathematical problems requiring Python programming. Must have a degree in Mathematics or related field, Python proficiency, and experience with numerical methods and symbolic computation.

Freelance AI trainer needed to design and develop computationally intensive statistical problems requiring Python programming. Must have a degree in Statistics or related field, 2+ years of experience, and strong written English.

Freelance AI Evaluation Engineer needed to create challenging coding test cases for AI systems. Requires 5+ years of Python development experience, full-stack development skills, and experience writing functional and integration tests.

Manage, configure, and troubleshoot Red Hat OpenShift clusters in a production on-premise environment. Handle day-2 operations, participate in legacy system decommissioning and workload migration, and ensure platform changes follow change management procedures. Develop and maintain Ansible playbooks, support application teams, and produce technical documentation.

Senior Linux Infrastructure Engineer needed for a small team supporting live trading systems across 120+ servers globally. Responsibilities include server-side operations, OS-level administration, troubleshooting, automation, and collaboration with other teams. Must have experience with RHEL, Ansible, and OS performance tuning in mission-critical environments.

Senior Python Data Engineer needed to build and maintain data pipelines for financial index computation. Requires 5+ years of Python data engineering experience, strong SQL skills, and the ability to translate financial logic into production-ready code.

accessibility and usability Knowledge of Italian, Portuguese, or Spanish Any personal, academic, or freelance

Freelance Mechanical Engineer and Python expert needed for AI training projects. Design computational engineering problems, create Python-based solutions, and verify results. Requires a degree in Mechanical Engineering or related field, Python proficiency, and 2+ years of experience. Strong written English (C1+) is essential.

Evaluate customer experiences for luxury brands in fashion, beauty, jewelry, or automobiles. Complete in-store visits or online evaluations, providing feedback on ambiance, service, and overall experience. Must be 18 years or older, a current customer of premium brands, and not under contract with any retail brands.