freelance English-speaking jobs in Leiria District

Develop and maintain web and mobile applications using React.JS and React Native. Integrate APIs, manage application state, and collaborate with designers and product managers.

Manages end-to-end influencer marketing campaigns across key accounts, working with micro and macro influencers. Develops and presents campaign strategies, tracks KPIs, and stays abreast of industry trends.

Senior Backend Engineer to design, develop, and maintain a greenfield platform built in TypeScript on Node.js. Shape architecture, establish patterns, and ensure systems meet performance, security, and reliability requirements. Collaborate with senior engineers and cross-functional teams. 5+ years of backend engineering experience with TypeScript or JavaScript on Node.js is required.

This internship supports the Vendor Planning team in supplier coordination, material planning, and production support. The intern will gain experience in automotive supply chain operations and contribute to production continuity.

Develop, maintain, and improve AI/ML powered products for personalized clinical care. Contribute to end-to-end AI treatment management systems and build AI Care Specialists.

Software Architect to own technical matters for a portfolio of software testing products, including TestRail. Design scalable architectures, maintain codebase integrity, and guide feature delivery using PHP, MySQL, and JavaScript. Collaborate with Product Management on roadmap and release planning.

Cloud Backend Engineer to design, develop, and maintain scalable cloud-based applications within the AWS ecosystem. Responsibilities include building REST APIs, managing third-party integrations, and ensuring code quality. Requires expertise in Node.js, AWS SDK for JavaScript, and a range of AWS services.

Develop strategic partnerships and business opportunities in the Aerospace and Defense Industry across Europe. Lead pursuit strategies, negotiate agreements, and guide cross-functional teams to achieve business development objectives.

Provide customer support via phone and email in Italian and Portuguese for a major national airline. Assist with flight inquiries, bookings, ticket changes, and loyalty programs. Must be fluent in Portuguese (C1) and Italian (B2).

Customer Service Executive for the Spanish market providing support via phone, email, chat, and social media. Responsibilities include managing customer and partner inquiries, resolving issues, and ensuring partner satisfaction. Requires fluency in Spanish and English, excellent communication skills, and recent customer service experience.

Software Engineer (all genders) will design and develop multi-threaded, high-scaling server- and client-side applications. The role requires at least 5 years of professional experience in software development with a focus on C++.

Provide customer service for Audi via phone, chat, and email. Respond to inquiries, resolve issues, and maintain customer records. Must have Dutch (C1) and English (B2) fluency and 1 year of call center experience.

Moderate social media content to ensure compliance with platform policies. Must be a native Czech speaker with a minimum B2 level of English. Work a 24/7 rotating shift schedule.

Drive AI adoption across IQVIA by translating business needs into practical guidance, training, and repeatable processes. Support use-case discovery, prioritization, and piloting of new AI tools. Define adoption metrics, track outcomes, and communicate progress to stakeholders. Facilitate change management and training for diverse audiences. Stay current on enterprise AI capabilities and vendor roadmaps.

Treasury Executive – Global will manage daily global cash flow, handle bank reconciliations and fund transfers, coordinate international payments, and prepare treasury reports.

IT GRC Consultant to advise Financial Services clients on governance, risk, and compliance within their IT environments. Responsibilities include assessing and improving IT GRC frameworks, leading risk assessments and audits, and designing IT GRC solutions. Requires a Bachelor's or Master's degree, 1-3 years of IT GRC experience, and knowledge of ISO/IEC 27001 and NIST CSF.

The Quinta do Lago Group is seeking a Head Bartender to deliver exceptional guest service and lead bar operations, ensuring quality, stock control, and brand compliance.

Analyze large datasets from Snowflake using SQL to generate actionable insights. Build and maintain dashboards and reporting solutions. Translate business questions into structured analysis and deliver concise insights to stakeholders.

This contractor role supports ULI Portugal's mission by growing and retaining membership, organizing events and programs, and communicating activities. The successful candidate will manage budgets, oversee third-party contractors, and collaborate with ULI colleagues across Europe. Strong organizational, communication, and interpersonal skills are required, along with fluency in Portuguese and English.

Backend Software Engineer will design, build, and maintain server-side components using Node.js, TypeScript, Supabase, and PostgreSQL. Responsibilities include API and service architecture, database design, cloud infrastructure management, code quality and testing, security and reliability, and team collaboration.