react English-speaking jobs in Espinho

Own the end-to-end LLMOps lifecycle for Ask Sovi products. Drive AI quality, safety, evaluation, and observability. Requires 1-3 years in AI Engineering or LLMOps with experience in evaluation frameworks.

SAP Functional Trainer needed with experience delivering training to business users. Requires strong SAP functional knowledge, clear process explanation, and fluent Spanish. Supports UAT and creates training materials.

Junior Accountant role assisting with financial record maintenance and statement preparation. Responsibilities include recording transactions, reconciling accounts, and managing A/P and A/R. Requires a degree in Accounting or related field and proficiency in accounting software.

Senior React Native Engineer to build and scale a high-traffic app for iOS and Android. Focus on performant, well-architected TypeScript code, maintaining stability, and collaborating cross-functionally.

Develop and maintain core simulation tools, enhance scientific computation systems, and build scalable code using .NET/C#. Requires experience in software architecture, Azure, and C#.

Sales Support Specialist role bridging buyers and agents in real estate. Key duties include client profiling, lead conversion to viewings, and agent collaboration. Requires native/fluent Dutch and English.

Maintenance Technician responsible for laboratory equipment upkeep, installation, troubleshooting, and optimization. Develops and manages maintenance plans, collaborates with vendors, and ensures equipment functions according to specifications.

Maverick Trading seeks an Equity & Options Trader to trade US markets from Western Europe. The role involves trading equities and options within defined risk parameters, following a structured, rules-based approach to scale capital. Trading experience is preferred.

Coordinate and supervise the maintenance department, managing general hotel maintenance including HVAC, electricity, and kitchen equipment. Requires 3+ years of experience, technical knowledge, and proficiency in Portuguese and English.

Director, Sanctions – Europe and EEMEMA leads sanctions compliance strategy across EU markets, focusing on digital assets and emerging payment ecosystems. This role oversees risk mitigation for fiat and crypto flows.

Senior SIEM Engineer to design, implement, and maintain security monitoring solutions. Responsibilities include developing KQL rules in Microsoft Sentinel, automating operations with scripting, and managing SIEM infrastructure. Requires experience with Sentinel, Graylog, and automation tools.

Dutch-speaking Customer Support Specialist for a leading European fintech. Provide professional assistance to Dutch customers regarding banking, payments, cards, investments, and account management. Requires C1/C2 Dutch and B2 English.

This Analyst role supports client-level profitability governance for Global Clients and Key National Accounts. Responsibilities include CCM coordination, financial consolidation, pricing analysis, and driving margin improvement across multi-country deals.

Provide professional customer support in Dutch and English. This on-site role requires fluency in Dutch and English, and comfort with a 24/7 rotational schedule.

Seeking an experienced VR/AR Developer to create cutting-edge virtual and augmented reality experiences. Requires 2+ years in VR/AR development, proficiency in Unity or Unreal Engine, and skills in C# or C++.

Oversee planning, coordination, and execution of software releases and deployments within the IT environment. This role requires experience in IT Release Management, understanding of Agile/DevOps, and proficiency with deployment tools.

Manage all F&B reservations, optimizing inventory and driving revenue through upselling. This role handles group bookings, analyzes trends, and ensures a seamless guest experience. Requires 1-3 years of experience and fluency in English and Portuguese.

Board-certified psychiatrists are needed to evaluate how large language models reason through advanced psychiatric cases. Responsibilities include designing expert diagnostic challenges and providing authoritative answers to research teams.

Senior Software Engineer (Java) to join the CIAM team. Deliver feature, security, and scalability enhancements to Java/Scala code. Requires strong architectural thinking, JVM experience, and AWS/Kafka knowledge.

Software Engineer role involving end-to-end development on scalable platforms. Requires experience with Java/Spring Boot, React/TypeScript, REST APIs, and SQL/NoSQL databases. Focus on full-stack solutions and engineering best practices.