freelance English-speaking jobs in Valongo

Customer Support Specialists provide banking-related assistance to customers via phone, email, and chat. Must have at least one of the following certifications: PDEADS, MiFID II / DMIF. Previous customer service experience, strong communication skills, and problem-solving abilities are required.

MysticInvest Holding seeks a Digital Marketing Manager to develop and execute digital marketing strategies across multiple brands. This role requires strategic vision, hands-on expertise, and experience managing multi-channel campaigns.

Platform Engineer will develop and maintain infrastructure solutions focusing on scalability, observability, and security. Responsibilities include designing, implementing, and supporting internal infrastructure services, expanding the Kubernetes-based application environment, and collaborating with engineering teams.

Senior Java & Angular Full Stack Developer to design, develop, and maintain web applications. Expertise in Java, Spring Boot, Angular, SQL, and CI/CD pipelines required. Agile experience and Jira proficiency essential.

Design, develop, and maintain scalable fullstack applications using Java (Spring Boot) and Angular. Build and optimize data flows and transformations leveraging SQL, PL/SQL, and relational databases.

Senior AR Specialist with 5+ years of experience in cash collection, dispute management, and AR processes. Fluency in English and Portuguese required. Experience with ERP systems, particularly SAP, is preferred.

Develops business and positions Roche as a strategic partner in the healthcare sector. Establishes strategic partnerships with public and private healthcare stakeholders. Drives innovative projects and collaborates with internal stakeholders to pursue new business opportunities. Leads complex negotiation processes and ensures sustainable profitability.

SAP Functional Consultant (S/4HANA Finance) needed for projects involving analysis, design, configuration, and support of SAP S/4HANA Finance modules. Requires 5+ years of experience as a SAP Functional Consultant with strong knowledge of end-to-end financial processes and SAP S/4HANA Finance solutions.

Leads the end-to-end agentic experience for messaging, owning the full agentic stack from task identification to response. Shapes how the agent understands, reasons, and responds in the messaging context. Drives the multi-agent evolution of the channel and defines the product strategy for messaging. Collaborates with platform, orchestration, and channel experience teams.

Senior Java Backend Developer to design, build, and maintain backend services and APIs. Experience with Terraform, Kafka, Kubernetes, and GraphQL Federation required.

As ESG Regulatory Manager, you will manage the inflow of sustainability regulations, assess business impact, and develop actionable implementation recommendations. You will coordinate compliance projects, ensure alignment with TRATON brands, and facilitate cross-functional communication.

Penetration Tester / Red Team Analyst executes end-to-end penetration tests, participates in Red Team exercises, and identifies vulnerabilities. Requires 2+ years of experience in pen testing, knowledge of networks, operating systems, web applications, and protocols, and proficiency in pentesting tools and methodologies.

Manage the renewal process for Check Point Software Technologies customers, ensuring high retention rates. Collaborate with cross-functional teams to address customer issues and achieve quota targets.

Implementation Specialist will serve as the primary client contact from sale to deployment. Responsibilities include gathering requirements, configuring the platform, managing project risks, and collaborating with cross-functional teams. Requires proven experience in implementation management, project management, and SaaS. Strong communication, problem-solving, and organizational skills are essential.

The International Iberian Nanotechnology Laboratory (INL) seeks a research leader to head the 2D Materials & Devices Research Group. The successful candidate will develop a research program focused on scalable device technologies based on two-dimensional materials, combining material growth, nanofabrication, and device integration.

Full-time Lawyer to review, draft, and negotiate contracts and legal documents. Provide legal advice, conduct research, and ensure compliance with laws and regulations. Manage cases, collaborate with teams, and contribute to policy development.

Senior Azure DevOps Engineer will design, implement, and maintain CI/CD pipelines, automate build and deployment processes, and monitor production environments. Requires 5+ years of experience, proficiency in Azure DevOps, Python or scripting, and automation tools like Ansible and Jenkins.

Senior Front-End Developer to build and maintain modern web interfaces using React (17 & 19). Focus on complex forms, dynamic tables, lists, and Web Accessibility (WCAG). Experience with Material UI, Formik, Redux, TypeScript, and GIT required.

Senior/Principal Medical Writers (f/w/d) prepare regulatory documents (protocols, reports, summaries, brochures, IMPDs/INDs, publications) for the pharmaceutical industry. Must have several years of experience writing these documents, with a minimum of 3 (Senior) or 5 (Principal) as lead writer. Principal Medical Writers require experience with various CTD dossier types. Fluency in English and strong interpersonal skills are required. Must reside in the UK, Germany, Italy, Ireland, or Portugal.

Technical Sales Specialist to provide expert guidance and support to Italian-speaking customers. Responsibilities include handling inbound requests, driving customer satisfaction, and achieving sales targets. Native Italian fluency and B2 English level required.