freelance English-speaking jobs in Barreiro

Webflow Developer needed to build, maintain, and optimize websites for dental practices. Responsibilities include implementing design updates, fixing issues, and ensuring sites adhere to XD's internal systems. Must have 2+ years of Webflow experience and strong HTML, CSS, and JavaScript skills. WordPress experience is a plus.

DataOps Engineer will manage and support data pipelines, ETL processes, and analytics platforms. Responsibilities include data validation, performance tuning, monitoring, and collaborating with DevOps and Infra teams on CI/CD integrations. Requires 8+ years of experience in DataOps, Data Engineering Operations, or Analytics Platform Support with proficiency in SQL, Python/Shell scripting, and cloud platforms (AWS).

Junior Backend Developer will design, build, and maintain backend services using .NET, C#, EF Core, and SQL Server. Responsibilities include collaborating with an Agile team, ensuring code quality, and owning the full DevOps lifecycle.

Provide customer support via phone, email, and/or chat in Dutch and English. Assist users with technical issues, account access, and platform functionality. Troubleshoot and resolve technical problems following established procedures.

Sales Development Representative will prospect new customers, identify opportunities, and engage with customers to align Cisco solutions with their business needs. Responsibilities include qualifying leads, collaborating with Field Sales Teams, and managing the full sales lifecycle. Must have full proficiency in English and German and a minimum of 1 year of work experience. Sales experience in the IT sector is preferred.

Data Analyst with 1+ years of experience needed to design, develop, and maintain business intelligence solutions. Will extract, clean, and validate data, create Power BI dashboards and reports, and analyze workflows for process improvement. Must have proficiency with Power BI Desktop and Service, SQL, and excellent communication skills.

Manages office services, maintenance, and events. Provides administrative support including scheduling, travel arrangements, and executive assistance. Requires previous experience as an Executive Assistant or Office Manager, a Bachelor's degree, and fluency in Portuguese, English, and Spanish (preferred).

Ardan Labs seeks a Mid to Senior Golang Engineer with 5+ years of experience, including 3+ years in Golang. Responsibilities include developing, testing, and maintaining Go applications, troubleshooting production issues, and contributing to deployment processes. Candidates should have strong expertise in production-level troubleshooting, microservices architecture, and distributed systems design.

Jobbex seeks a Tech Lead Salesforce Cloud Marketing to design, develop, and maintain Marketing Cloud solutions. Responsibilities include integrating Marketing Cloud with Salesforce and external systems, ensuring solution quality and security, and collaborating with global teams. Requires 10 years of experience with relevant platforms, a degree in a related field, and strong communication and problem-solving skills.

AI Acquisition seeks a Chargeback, Payments & FinOps Operations Specialist to manage the full chargeback and dispute process, oversee refund flows, and build systems for refunds and escalations. This specialist role requires 5+ years of experience in payments operations, chargebacks, refunds, FinOps, billing, or risk roles. Must have hands-on experience with Stripe, PayPal, payment gateways, and subscription billing platforms.

Decskill is seeking a Cobol Developer with experience in Cobol (Mainframe), JCL, DB2, Telon, and XML.

Supervises Front Desk activities including check-in/check-out, room allocation, guest complaints, and cash handling. Leads shift operations in collaboration with the Assistant Front Office Manager and/or Front Office Manager. Completes cashier and closing reports, processes guest check-ins, and ensures rates are accurate. Serves as a role model for the Guarantee of Fair Treatment/Open Door Policy and responds to emergency procedures. Maintains confidentiality, protects company assets, and adheres to company policies and procedures. Welcomes and acknowledges guests, anticipates service needs, and assists individuals with disabilities. Communicates clearly and professionally, develops positive working relationships, and ensures adherence to quality standards.

Le Wagon seeks a Sales Development Representative to guide prospective students through the application process. Responsibilities include outbound and inbound sales, nurturing campaigns, event representation, and student enrollment support. Must be based in Lisbon, fluent in French and English, and passionate about tech and AI.

Accounting Specialist to support finance and operations. Maintain general ledger, prepare financial statements, and ensure compliance. Requires accounting experience, knowledge of financial reporting, and strong Excel skills.

Senior Data Engineer with 5+ years of experience in cloud-native solutions and data architecture. Expertise in end-to-end data platform design, including ingestion, modeling, storage, and orchestration. Strong knowledge of Microsoft technologies (Fabric, Azure Data Factory, Synapse) and experience with data warehouses and data lakes. Proficiency in Python, SQL, and/or Spark. Experience with relational and NoSQL databases. Knowledge of DevOps/DataOps practices and CI/CD pipelines. Ability to implement data validation, lineage, documentation, and monitoring. Proven experience optimizing data pipelines and storage. English proficiency at B2 level or higher.

Cybersecurity Administrator will manage and maintain cybersecurity tools, provide support, and participate in incident response. Responsibilities include collaborating on the management of the Microsegmentation tool, ensuring tool configurations mitigate risks, and documenting incident response activities.

The Universidade de Aveiro is seeking a First Stage Researcher (R1) to work on the ePORCEL project. The project focuses on research and development of new fine porcelain tableware products with reduced environmental impact. Applicants must have a Master's degree in Materials Engineering, Product engineering and design, or a related field. Work experience and knowledge in additive manufacturing techniques, conventional porcelain processing, and CAD modeling are required. The grant is for six months, with the possibility of renewal.

Deliver testing on Contract Management systems for VWFS markets across Europe. Design and execute end-to-end System Testing, System Integrations Testing, Regression and User Acceptance Testing. Collaborate with 3rd party QA resources.

Business Analyst to gather, analyze, and document business and functional requirements. Prepare BRD, PRD, FRD, and Product Backlog. Map process flows and support functional design. Collaborate with engineering, product, and stakeholder teams. 3-5 years of experience required. Fluency in English and experience with agile methodologies.

Electrical Engineer needed for construction projects. Manages electrical design, procurement, installation, and acceptance of power supply systems, security systems, and other electrical infrastructure. Requires 8+ years of experience and a related degree.