freelance English-speaking jobs in Valongo

Design, develop, and maintain full-stack applications using modern frameworks and tools. Collaborate with cross-functional teams to ensure system integration, testing, and deployment. Proficient in JavaScript/TypeScript, Python, Java, and front-end/back-end technologies.

Support HVCH projects in defining production processes, documentation, and registration. Collaborate on quality documentation, production layout, and testing results. Assist with continuous improvement and maintenance management tools. Bachelor's degree in engineering required.

Security-focused Engineer to strengthen Kibana's security posture and build robust platform security features. Responsibilities include hardening Kibana against evolving threats, managing security vulnerabilities, and ensuring the application meets security standards.

Backend Software Engineer to design, develop, and maintain scalable backend systems and APIs. Requires 3+ years Python experience, Django, Docker, PostgreSQL, and MongoDB.

Integration Engineer needed to design and build integration solutions within a complex enterprise environment. Requires 4-6 years of experience with SAP PI/PO, IBM DataPower, MuleSoft, or similar integration frameworks. Must have strong Java skills, knowledge of XML/XSLT, and excellent communication and problem-solving abilities.

Senior Commercial Counsel to draft, review, and negotiate commercial contracts in the EEA. Provide legal, commercial, operational, and regulatory advice on deals. Lead counsel on strategic projects and resolve issues in existing commercial relationships.

Develop and maintain 3D models of WindFloat platforms using SolidWorks. Produce 2D drawings and technical documentation. Establish and improve design standards. Coordinate with engineers and project managers. Minimum 7 years of experience in design and drafting. Strong expertise in SolidWorks and AutoCAD. English proficiency at C1 level.

Safety Pilot will monitor flight operations, mitigate hazards, and ensure compliance with regulations. The role requires proficiency in English, aviation knowledge, and relevant certifications (A1/A3, Pilot License, etc.). Experience with MALE/HALE UAS platforms and MUAS is preferred. Travel to customer locations in the UK, Portugal, US, and Europe is expected.

Site Reliability Engineer will develop and maintain AWS CDK infrastructure, operate and troubleshoot ECS Fargate services and Lambda functions, and manage GitLab CI/CD pipelines.

Provides first-line operational support for routine network tasks, assisting senior engineers with troubleshooting and maintaining accurate operational records.

Provide German-language customer support for leading global brands. Handle inquiries, resolve problems, and ensure positive customer experiences.

Provide customer support via phone, email, and chat for diabetes medical devices. Handle inquiries, complaints, and resolve issues. Fluent in Dutch (C2) and English (C1) required. Previous customer service experience is a plus.

Power BI Engineer to design, build, and maintain dashboards and reports for a European data function. Responsibilities include data validation, report maintenance, and collaborating with stakeholders across multiple data domains. Requires strong Power BI, SQL, and data analysis skills.

Senior Specialist, Design Technologist, Developer Experience will build prototypes, maintain design system documentation, and conduct user testing for Mastercard's developer platform. Requires 2+ years of experience in design technology, front-end engineering, or a hybrid role with proficiency in front-end frameworks and prototyping tools.

Technical Support Specialist needed for fast-growing international consultancy. Troubleshoot client ERP incidents, translate client needs to development teams, and provide technical support. Requires IT background, 2+ years experience in technical customer success, and fluency in English (C2) and another European language.

Receptionist for a lifestyle hotel, providing exceptional guest experiences and managing reservations. Requires customer service experience and the ability to handle guest inquiries and complaints.

As a Reservations Agent, you will book guest reservations, provide information about the hotel and city, and handle guest requests and complaints. You will also assist with other duties as assigned, such as running reports and staying abreast of current rates and promotions.

Leads the evolution of project management capabilities across Critical Software, ensuring consistency while allowing flexibility for different customers and markets. Establishes governance models for visibility, risk detection, and predictable delivery outcomes. Drives the adoption of data-driven decision-making and reporting to improve forecasting accuracy and operational visibility. Explores and implements AI-driven solutions to enhance planning, risk management, resource allocation, and delivery performance. Develops project management capabilities across the organization, including training, coaching, and mentoring.

Customer Service Representative needed for a leading e-commerce brand. Provide excellent customer service in Polish and English through written and verbal communication.

Senior HR Specialist to guide clients through onboarding, from contract signature to successful employee onboarding across multiple countries.