35 freelance English-speaking jobs in Porto District

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 English writers train AI models by crafting text that teaches AI reasoning, logic, and clarity. Contributors create original, fact-checked responses, collaborate with Quality Assurance Specialists, and adhere to style and quality standards.

The Infrastructure Architect will manage and optimize global trading infrastructure, ensuring high reliability and performance. The role involves collaborating with teams to improve the trading platform's technology foundation and automating infrastructure tasks.

Kubernetes Database Engineer will design, deploy, and operate database services on Kubernetes. Responsibilities include managing PostgreSQL databases, implementing persistent storage solutions, and developing automation for provisioning and scaling. Requires experience with Kubernetes, PostgreSQL, HA/DR architecture, CI/CD pipelines, and Infrastructure as Code.

Freelance AI trainer needed to design and develop computationally intensive engineering problems using Python. Must have a degree in Electrical Engineering or related field, 2+ years of experience, and strong Python proficiency for numerical validation.

Unparalleled growth opportunities; A chance to work with the most trailblazing companies in the world; A freelance

accessibility and usabilityKnowledge of Italian, Portuguese, or SpanishAny personal, educational, or freelance

Senior NetDevOps Engineer to join a team building out Network and Security Automation. Responsibilities include automating firewall rule management, translating manual configurations into Ansible playbooks, and contributing to the VLAB framework. Requires strong network and security engineering experience, Ansible proficiency, and experience with GitLab.

Experienced Energy Systems Engineer needed for substation automation, protection, and power control solutions. Define technical architecture, produce specifications, and support project planning and execution. Minimum 3-4 years experience in energy systems required. Bachelor's or Master's degree in Electrical Engineering mandatory.

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.

and brand guidelines.Qualifications Hard Skills1–5 years of experience in video editing (internships, freelance

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.

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.

Junior Software Engineer - Cross-platform C++ - MultipassML Engineer (Portugal Based Remote/Hybrid)Freelance