ruby English-speaking jobs in Fundão

Senior React Native Developer for a 12-month contract with a leading technology firm. Build and maintain cross-platform mobile applications for Android and iOS. 5+ years of React Native experience required. Fluency in Portuguese is necessary.

Develop and implement mathematical models and algorithms for a construction layout design tool. Translate models into Python code, analyze data, and collaborate with teams. Requires 3+ years of experience in mathematical modeling, algorithm development, or optimization-focused software engineering.

Leads daily cash management, financial strategy, and bank relationships. Oversees working capital, financial reporting, and ERP systems. Requires 6-8 years of finance experience, including cash flow forecasting, vendor management, and ERP proficiency.

Lead a Java development team, implementing best practices and overseeing the redesign of a client interface.

Conduct in-depth research on securities, perform financial modeling, analyze investment opportunities, and provide insights and recommendations.

Experienced SAP Developer needed for a 6-month contract. Must have 3-5 years of ABAP programming experience (Enhancement, Workflows, Interfaces, Forms, and Reports) and knowledge of Clean Core strategy. Familiarity with RAP, SOA, CDS Views, oData, API's, Clean Code, AIF, Side-by-Side Extensibilities, and ABAP on Cloud is required.

Experienced GCP Data Engineer needed to design, implement, and manage data pipelines. Requires 5+ years of experience, proficiency in dbt, BigQuery, and Google Cloud Storage. Strong knowledge of Cloud Run, GKE, Docker, Git, and DevOps practices is essential.

Software Engineer will design, build, and maintain critical infrastructure and services for a high-traffic, global search engine. Responsibilities include ensuring performance, stability, and reliability of systems handling billions of daily requests. Requires strong computer science fundamentals, experience scaling backend systems, and comfort working across different technology layers.

Design, implement, and maintain network infrastructure. Analyze network performance, configure network devices, and resolve network incidents. Maintain network documentation and participate in network-related projects.

Leads the partnerships function, builds long-term commercial value, and owns business development. Manages a team of Account Managers, develops partner relationships, and ensures partnerships meet commercial objectives. Identifies and unlocks new opportunities, and drives operational efficiency and process development.

This Project Manager role delivers complex technical projects, ensuring safety, quality, and customer satisfaction. Requires leadership, commercial awareness, and technical credibility in data center, fiber, and construction/M&E environments.

Research Scientist to develop asymmetric hybrid supercapacitors within an EU project. Responsibilities include R&D activities, collaboration, reporting, and project dissemination. PhD in Electrochemistry, Materials Chemistry, Materials Science and Engineering, Nanotechnology, or related field required. Experience with supercapacitor development and electrochemical performance assessment is essential.

The Head of Securities will manage the Securities Operations function, ensuring operational efficiency and excellence. Responsibilities include processing and controls of securities functions, managing the budget, and leading a team in Lisbon.

Freelance Kotlin Software Developer to design technical content, code examples, and tutorials for AI training. Collaborate with engineers to ensure accuracy and consistency. Must have 3+ years of Kotlin development experience, strong JVM knowledge, and proficiency with Android SDK, Jetpack Compose, and modern architecture patterns.

Designs, builds, and scales backend systems for data science products. Develops data pipelines, integrates data from multiple sources, and leverages frameworks to improve data science service performance. Requires experience with Python, Java, Scala, or Go, microservices, and distributed systems.

Senior SuccessFactors Integration Specialist needed to design, implement, and maintain integrations between SAP SuccessFactors and external systems. Requires 5-8 years of experience, SAP Certified Associate – Integration Developer (C_CPI) certification, and expertise in API design, middleware platforms, and integration concepts.

Develop and maintain software products using ML and AI algorithms. Collaborate with engineers and scientists to solve customer problems. Proficiency in Ruby, Python, Scala, or Java required.

Tableau/Power BI Developer will build and iterate dashboards, define KPIs, and produce reports. Requires advanced Tableau or Power BI, strong SQL and Snowflake skills, and the ability to collaborate effectively.

Senior IT Infrastructure Engineer to integrate, configure, and validate infrastructure solutions. Requires experience with Red Hat Linux, Ansible, CI/CD pipelines, scripting, networking, and hardware validation. Must have excellent communication skills and be able to produce technical documentation. Travel required.

Customer Success Manager for the DACH region (Germany, Austria, Switzerland) required. Fluent German and English essential. 3+ years experience in hotel sales or SaaS advantageous. Focus on client satisfaction, retention, adoption, and expansion.