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.

Fundraisr seeks a part-time hybrid Web & UX/UI Designer in Lisbon. Responsibilities include designing and developing visually engaging websites and interfaces, optimizing user experiences, and collaborating with cross-functional teams.

IT Specialist to manage and integrate Office 365 solutions, Linux and Microsoft environments, and VDI platforms. Requires 2+ years of experience in similar roles with expertise in Windows and Linux administration, Office 365, Active Directory, Exchange, and VMware/Omnissa.

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.

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.

The General Ledger Accountant maintains financial records, ensures compliance with IFRS and Portuguese GAAP, and supports month-end and year-end closing activities. This role prepares journal entries, reconciles accounts, prepares financial statements, and supports audits.

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.

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.

Senior ATOSS Consultant to lead complex implementations of ATOSS workforce management solutions. Experience required in requirement gathering, solution design, system configuration, and project delivery. Minimum 5+ years of hands-on experience with ATOSS software and at least 3 full end-to-end implementations.

Design and evaluate structured test scenarios for LLM-based agents. Define gold-standard behavior and scoring logic to assess agent performance. Analyze agent logs and decision paths to identify areas for improvement.

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.

Business Analyst to support worldwide Salesforce initiatives for Customer Relation Centres. Collaborate with stakeholders to capture and clarify business requirements, design use cases, and develop user stories. Minimum 5 years of experience in technology projects, Salesforce Service Cloud certification, and proven project management skills required.

Taxhackers.io seeks a remote Sales Closer to drive revenue growth. You will manage inbound leads, close deals ranging from $1,800 to $8,000, and follow a proven sales process. Requires 1-3+ years of high-ticket remote sales experience.

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.

SAP Cloud Integration (CPI) Senior Developer needed for remote position. Design, develop, and maintain CPI iFlows, implement Groovy scripts, and manage APIs using SAP API Management. Experience with SAP Event Mesh and event-driven integration patterns required.

Retail Coordinator to manage a flagship store in Lisbon and supervise two additional locations. Responsibilities include team management, visual merchandising, stock control, and ensuring a premium customer experience. Requires proven retail management experience, strong leadership skills, and fluency in English.

Data Engineer needed to design, develop, and maintain data pipelines and ETL processes using AWS services, including QuickSight. Requires 2+ years of experience with QuickSight, AWS, Python, and SQL. Hybrid work model (2 days/week on-site) in Lisbon or Porto.

The Lead Generation Specialist drives VAKT's growth by identifying new sales opportunities and supporting revenue expansion. Responsibilities include building and maintaining a pipeline of qualified leads, collaborating with marketing teams, analyzing market trends, and conducting outbound calls to identify new business opportunities.

Support Product Managers in the discovery, definition, and delivery of digital product initiatives. Assist in gathering customer insights, business requirements, and stakeholder input. Contribute to product backlog and participate in agile ceremonies.

ABAP Developer needed for an Oil Company. Minimum 4 years of experience required. Knowledge of ABAP, ECC, and S4/Hana. English C1 level.