freelance English-speaking jobs in Maia

International Sales Representative to promote digital advertising solutions across Europe, the United States, and Latin America. Experience selling digital advertising, sponsorships, SaaS, or media solutions required. Fluency in English and Spanish is essential.

Quality Assurance Analyst to join our Engineering team. Focus on ensuring integrations of digital payment and crypto systems function as expected. Collaborate with engineers, product managers, and QA team members to validate system behavior and identify potential risks. Responsibilities include test planning, execution, defect reporting, and contributing to automation frameworks.

Hi Fly seeks a Compliance Monitoring Airworthiness Auditor to conduct audits, evaluate procedures, and prepare reports. Requires 5+ years of experience in the aeronautics industry, an engineering degree, and fluency in English.

Performance Marketing Specialist to drive paid acquisition channel execution and optimization. Manage ad infrastructure, execute creative testing, and optimize for Contribution Margin and CAC. Deep expertise in Meta Ads, creative strategy, attribution tracking, and budget management.

Provide technical support to internal and external customers via phone, email, and other channels. Ensure customer satisfaction and escalate issues promptly. Contribute to process improvement initiatives and knowledge sharing. Fluent in French.

Leads all operations for two MUTE hostels in Portugal, overseeing front desk, housekeeping, F&B, and other areas. Manages finances, human resources, sales, and marketing to achieve financial and experiential goals.

Decskill is seeking a Quality Assurance Specialist to join its team. The ideal candidate will have experience with ALM, Jira, Xray, Soap UI, Postman, and Jmeter.

Provides customer support via voice, investigating, troubleshooting, and resolving customer issues. Ensures high standards are met and work is carried out efficiently. Must be able to read, write, and speak English and German (min B2).

Senior Full-Stack Developer with 6+ years of experience in software development. Strong Angular experience and 3+ years with Java required. Must have hands-on experience with GitHub and MongoDB.

Documentation Management Analyst will support Engineering projects, ensuring compliant technical documentation management. Responsibilities include process support, risk identification, and process improvement initiatives. The ideal candidate possesses analytical skills, data management expertise, and proficiency in Google Workspace and Microsoft Excel.

Lead large-scale cross-functional programs across European OLX classified products. Manage program delivery, track dependencies, and collaborate with engineering and product leaders. Establish and apply a governance framework for decision making.

Catawiki is seeking an Android Engineer to join their team. You will contribute to the development and improvement of their Android app, working with Kotlin, Compose, and MVVM architecture. The ideal candidate has a strong understanding of Android development principles and experience with RESTful APIs, unit testing, and the reactive/functional paradigm.

Own and evolve an OpenStack private cloud, focusing on reliability, upgrades, automation, and infrastructure problem solving.

Support B2B advertisers using digital advertising solutions. Resolve product issues, explain tools, and improve campaign performance. Collaborate with internal teams and technical specialists to ensure customer satisfaction.

HR Specialist to manage full recruitment lifecycle for technical, engineering, and professional roles. Develop sourcing strategies, conduct interviews, and coordinate onboarding. Support HR activities, including employer branding, administration, and policy implementation.

Booking & Roadtrip Sales Intern will engage with prospective and existing customers to finalize campervan bookings, upsell add-ons, and promote new trips. The role requires fluency in English and German, sales experience, and strong communication skills.

Senior Mobile Consultant to join a strategic project in Lisbon. Requires 6+ years of mobile app development experience, expertise in React Native, JavaScript, TypeScript, and RESTful/GraphQL APIs.

Kotlin Mobile Developer to build, deliver, and maintain privacy products (SDKs) for mobile applications, games, and TV applications. Develop mobile and TV interfaces, collaborate with teams, and ensure product quality. Requires 5+ years of Kotlin development experience and strong communication skills.

QA Release Engineer to support the design and development of embedded systems. Conduct various types of testing, analyze test data, and collaborate with teams to resolve quality issues. Develop and maintain automated testing frameworks and test documentation.

Senior Investments Performance Analyst will produce investment monitoring reports for pension funds, including asset allocation, performance, risk analysis, and strategy updates. Responsibilities include collaborating with consultants, validating customer information, and mentoring junior colleagues. Requires fluency in English, a degree in a relevant field, and 3+ years of experience in the investments industry. Strong analytical and Microsoft Office skills are essential.