freelance English-speaking jobs in Leiria District

Aubay Portugal seeks a SysAdmin/SysOps Engineer with 3+ years of experience in IT operations and infrastructure management. Essential skills include Linux systems administration, scripting, load balancing, APIs, and protocols. Experience with application servers (Apache Tomcat, MySQL, NGINX, HAProxy), monitoring platforms (Nagios, Prometheus), and fluency in Portuguese are required. Experience with Artificial Intelligence (AI) is a plus.

Systems Administrator/OPs Engineer to manage, optimize, and improve core infrastructure systems. Requires expertise in Windows and Linux server administration, networking, Active Directory, and IT security.

Software Technical Lead with 5+ years experience in full-stack development, including 3+ years of leadership. Strong Java backend skills (Spring Boot, Spring Batch, Spring Integration, Spring Boot Starter) and front-end experience (React or Angular). Expertise in DevOps tools (Kubernetes, Jenkins, Docker, OpenShift, Git) and testing frameworks (Selenium, Cucumber, Mockito, JUnit). Fluency in English and Portuguese required.

Drive revenue growth by selling integrated campaigns across radio, digital, branded content, and more. Manage and grow client and agency relationships, identifying new business opportunities.

Regional Customer Relations and Development Lead will launch and manage a new office, consult clients on AI trading tools, promote the brand, and build a client network.

This Supply Operations role supports efficient management of office resources, logistics, and administrative processes. Responsibilities include managing office supplies, coordinating maintenance, tracking expenses, and collaborating with vendors.

Senior HR Business Partner to provide continuity and leadership for EMEA operations. Collaborate with US-based leadership, in-country leadership teams, and external partners. Manage payroll, benefits, HR programs, employee experience, and events. Requires 5+ years of HR experience, including 3+ years as an HRBP in a multinational environment. Must have knowledge of HR practices across multiple EMEA countries and experience managing payroll and benefits in Portugal. Strong communication skills in Portuguese and English are required.

iOS Engineer to research, design, develop, and maintain high-quality code solutions for games. Work in a dynamic team to deliver scalable and shareable solutions. Collaborate with stakeholders, developers, and data professionals. Minimum 2 years of iOS development experience required. Strong grasp of Swift or Objective-C.

Design and develop complex analytical models using Python, R, and cloud PaaS services. Implement solutions leveraging TensorFlow, Keras, PyTorch, or Caffe. Build end-to-end pipelines for data preprocessing, model fine-tuning, and deployment.

Senior AI Developer sought for client project. Requires expertise in LLMs, OOP, data structures, and prompt engineering. Proven experience with C#, Python, JavaScript, and building conversational flows. Minimum 5 years experience and relevant degree required. Strong English communication skills essential.

Full-Stack Software Engineer will participate in the full development lifecycle, collaborating with business specialists to design and implement software solutions. Responsibilities include developing RESTful web services, Angular-based frontend applications, and Java-based backend applications.

Sr. Frontend Developer to build new features using Figma and React. 3+ years of professional software development experience required. Experience with Server Side Rendering and/or NextJS is a plus.

Data Scientist will design and implement machine learning model deployments, ensuring robust pipelines. Collaborate with stakeholders to understand challenges and translate data problems into solutions. Requires Python, machine learning, and MLOps expertise.

Consultants support leading global banks with front-to-back transformation, operational excellence, and risk management solutions within Global Markets environments. Assignments include Global Markets Operations & Product Control, Market Risk & Financial Analytics, and Transformation & Projects.

Information Systems Security Specialist to integrate security and data protection into digital projects. Experience in cybersecurity, IT architectures, APIs, Cloud (AWS, Azure, GCP), and modern security technologies required.

Software Developer (.NET) to design, develop, and maintain high-quality, scalable software components for a Gas Flow Management digital platform. Collaborate with product owners and analysts to translate business requirements into technical solutions. Contribute to architectural discussions and participate in Agile ceremonies.

Leads a team of Engineers, driving execution quality, delivery timelines, impact, and growth. Mentors and advises team members, providing coaching and feedback. Collaborates with Product Managers to define product investments, ensuring alignment between product plans, team bandwidth, technical landscape, and team growth.

Develop and implement Neptune DXP Open Edition applications to meet business requirements. Collaborate with teams to design digital solutions and ensure seamless integration with SAP systems.

Fullstack Javascript Developer with 3+ years experience in Java and client-side frameworks (React, Angular, or Vue). Experience building cloud-native software components (Azure preferred) and CI/CD processes. Passionate about writing high-quality, refactored code and automated testing.

Senior QA Engineer to own quality across a cloud-based platform. Responsibilities include designing, building, and maintaining automated test suites, executing manual QA, and ensuring releases meet quality standards. The role involves close collaboration with engineering teams and will contribute to building a QA function.