freelance English-speaking jobs in Guimarães

Junior O2C Specialist will process customer orders, generate invoices, and manage customer payments. Requires fluency in German (C2) and English (C1), 2-5 years of experience in Accounts Receivable/O2C/Finance Operations, and knowledge of accounting principles.

Junior Environment Engineer/Quality, Environment and Safety Technician needed. Requires a degree in Environmental Engineering, Safety Engineering, or related field, or certification as an Occupational Health and Safety Technician. Proven experience in Quality, Environment, and/or Safety roles is preferred. Strong English skills are required.

Fullstack Developer will own features end to end, building React interfaces, APIs, and data pipelines. Responsibilities include building the operational frontend, working with AI, ensuring correctness, and maintaining system reliability. Requires experience building production systems, React, and at least one backend ecosystem (C#/.NET, Node.js/TypeScript, or Python).

Documentation Analyst verifies and matches trade confirmations, ensuring accuracy and timely reconciliation. Resolves discrepancies with clients and internal teams. Requires experience in financial markets, strong analytical and communication skills, and fluency in English.

Digital Marketing Manager to lead growth and acquisition strategy for a high-growth social gaming business. Manage paid social campaigns, optimize performance, and analyze campaign performance. Deep expertise in Meta Ads Manager and TikTok for Business required.

Evaluates the fitness and physiological condition of rescued Cory's Shearwater fledglings. Fieldwork includes monitoring colonies, ringing campaigns, and data collection during rescue efforts.

Java Spring Boot Middle Developer sought for national and international projects. Requires 3-5 years of Java experience, including API development in distributed systems. Experience with Spring Boot, relational and non-relational databases is essential.

Lead Full stack Developer will design and integrate feature teams, Optimizely platform, backend APIs, SSR capabilities, and CDN caching into a unified production system. Define and enforce architecture standards for platform-wide integration. Collaborate with Feature Teams, API development teams, CMS stakeholders, and governance bodies. Mentor developers and ensure alignment with architectural principles.

Content Moderator ensures e-commerce platform standards, policy compliance, and content safety. Reviews content, adapts to policy changes, and escalates issues. Requires Hungarian C2 and English B2, strong moderation skills, and e-commerce understanding.

Advises, monitors, and supports the Ingka Group on direct and indirect tax matters. Implements country tax strategy, ensures tax control, and files tax returns. Supports management and statutory reporting, manages transfer pricing documentation, and advises on tax optimization.

Senior Knowledge Management Specialist supports case teams by providing expertise, resources, and best practices within Bain's B2B Commercial Excellence practice. The role involves capturing and sharing knowledge, identifying gaps, and collaborating with internal and external stakeholders.

Provides strategic data support to the Managing Director of Revenue Services. Analyzes complex data sets, develops Power BI dashboards, and translates findings into actionable insights and recommendations. Collaborates with stakeholders to ensure data accuracy and contribute to high-impact projects.

Lead full-cycle recruitment for a variety of roles, designing sourcing strategies and acting as a culture ambassador. Support employer branding initiatives and candidate experience.

Outsystems Frontend Engineer needed for on-site role in Lisbon. 3+ years of Outsystems development experience required, including Reactive and Mobile. Strong UI skills, custom patterns, themes, CSS3, HTML5, and JavaScript knowledge are essential. Fluency in Portuguese (C1 level) is mandatory.

Provide customer support to small and medium-sized businesses across chat, email, and phone. Support and expand self-serve advertising for clients in the online and digital advertising domain.

As Digital Marketing & Customer Engagement Senior Director, you will own the strategy, execution, and technology for BCG's digital engagement across all target audiences. You will define and govern the continuous improvement of touchpoints across key channels, optimizing reach and conversion. You will also drive the design of dynamic web experiences for peak activation moments and steer Product Owners and engineering teams in the development and optimization of activation-layer technologies.

Junior Service Development Manager to support and lead service projects across Europe, driving digitalization and improving aftersales service delivery.

Designs, develops, and maintains BI solutions, including reports, dashboards, and data models. Translates business requirements into scalable data models and visualizations. Builds and optimizes ETL/ELT processes to ensure reliable data availability.

Scrum Master / Project Manager with 3 years of experience needed. Facilitate Agile ceremonies, coach teams, identify impediments, and promote continuous improvement. Strong understanding of Agile principles and continuous improvement mindset required.

Senior Full Stack Developer will reimagine enterprise-level applications using PHP, Laravel, SQL, JavaScript, HTML, and CSS. Collaborate with product management, stakeholders, and customers to design, develop, and improve systems. Minimum 3 years of full-stack development experience in enterprise systems required.