freelance English-speaking jobs in Valongo

Senior DevSecOps Engineer to design, secure, and optimize infrastructure. Requires 8+ years of experience in DevOps, SecOps, or DevSecOps, expertise in CI/CD, cloud platforms, and security frameworks.

Business Analyst Expert to design and implement insurance solutions. Analyze business processes, translate requirements into technical specifications, and provide analytical support for strategic decision-making.

Atlean World seeks Danish native speakers with B2+ English proficiency for a Customer Support Specialist role. This opportunity provides growth potential and a chance to join an international team.

Senior Technical Support Specialist needed for a cutting-edge payment gateway provider. Deep investigation and root cause analysis of complex platform issues. Expert payment knowledge, API and log analysis, and strong technical communication skills required.

Backend Node.JS Developer will build and deploy high quality software. Responsibilities include developing programs consistent with coding standards, collaborating with teams to refine requirements and designs, and participating in all stages of the software development lifecycle. Requires 3+ years of software development experience, experience working in scrum teams, and proficiency in Node.js and MySQL. Front end knowledge in React and Node.js is also required.

Manages warehouse staff agencies, including attendance, training, and evaluation. Optimizes salary and welfare systems and implements Cainiao culture. Provides HR administrative support and collaborates on projects to enhance employee satisfaction and team building.

Sales Development Representative will generate qualified leads for Account Executives across Europe. Responsibilities include prospecting, multi-channel outreach, lead qualification, and pipeline management. Fluency in English plus Dutch, Danish, German, Arabic, or French is required.

HR Administrator to support employee life cycle processes including recruitment, onboarding, and benefits administration. Responsible for data accuracy in Workday, responding to employee inquiries, and managing HR documentation. Requires 2+ years of HR experience and proficiency with Microsoft Suite and HRIS systems.

Senior QA Analyst to lead testing and validation of REST APIs powering financial, payment, and investment operations. Validate business logic, edge cases, error handling, and complex flows. Collaborate with backend engineers on design and release.

Senior Front End Developer with 5+ years of experience in ReactJS and Redux. Expertise in Next.js, Server-Side Rendering, and Node.js. Strong understanding of component-based architecture, Server-Driven UI, and accessibility standards. Experience with Agile methodologies and tools like Jira and Git. Fluent in English with excellent communication skills.

AI Innovation Engineer to design, develop, and implement AI-driven solutions for optimizing testing within OutSystems applications. Requires strong OutSystems proficiency, 3+ years in test automation, and 1+ year in AI technology.

Head of Human Relations will drive HR strategy, foster a high-performance culture, and align people practices with organizational goals.

Test Engineer to plan, coordinate, and execute test activities for mobile and web SDKs powered by microservices and machine learning models. Responsibilities include designing test frameworks, automating test coverage, and collaborating with engineering and product teams. Requires proven experience in test design and automation for mobile and web applications, strong coding skills, and experience with test tools and frameworks.

CRM Campaign Management Specialist will plan, execute, and optimize multi-channel campaigns, analyze data, and provide insights. Will act as Business Owner for AEM, gathering requirements, prioritizing tasks, and collaborating with technical teams. Requires a Bachelor's degree and proven experience as a Campaign Manager with expertise in AEM and Braze.

Review and moderate user-generated content in Croatian to ensure compliance with community guidelines and safety policies. Identify and flag prohibited content such as hate speech, harassment, and misinformation. Apply moderation guidelines consistently and escalate complex cases.

Junior AI Engineer needed with experience in AI Engineering, Machine Learning, and programming in Python and Java. Must have knowledge of LLMs, Deep Learning frameworks, and Big Data processing.

Designs, builds, and deploys applications on Azure using Kubernetes. Develops and maintains CI/CD pipelines using Azure DevOps. Collaborates with development and operations teams to create and improve infrastructure.

Network Support Technician needed for NOC team. Provides excellent customer support through technical knowledge, proactive maintenance, and problem-solving. Requires technical diploma, fluency in English, network protocol knowledge, and experience with network and telecommunication systems. Must be available for shift work.

Drive revenue growth by prospecting, acquiring, and managing advertising clients across digital platforms. Lead the full sales cycle, from identifying prospects to onboarding new accounts.

Senior/Lead Backend Engineer (Golang) to design and develop scalable, distributed applications and microservices for a decentralized cloud platform. Requires strong expertise in Go, P2P systems, and system-level programming.