react English-speaking jobs in Espinho

Biochemistry Researcher (R1) position for a 6-month fellowship, renewable for the project duration. The successful candidate will work on enzyme selection, immobilization, characterization, and validation for arsenic and antimony biosensors.

Management Accountant will prepare monthly journals, collaborate with teams, and own balance sheet reconciliations. Provides P&L variance analysis and supports annual audits. Requires ACCA/CIMA/ACA qualification, industry experience, and knowledge of NetSuite.

Embedded Software Engineer needed for power electronics, electrical machines, and converter control. Expertise in MATLAB/Simulink, Simscape, and embedded C/C++ required.

System Testing Coordinator for Substation Automation. Plans and maintains test field area and equipment. Supports test engineers with system tests and optimizes test field infrastructure. Requires degree in energy technology, electrical engineering, or equivalent. Fluent Portuguese, English advantageous.

Marketing/Expert Marketing trainee will gain experience in a multinational environment. Responsibilities include implementing marketing actions for healthcare professionals, participating in the healthcare professional training program, collaborating on consumer marketing campaigns, and developing annual marketing plans.

As a Gastronomy Ambassador & PR, you will represent the F&B department, ensuring exceptional guest experiences and promoting the brand's gastronomic identity. You will manage reservations, communicate F&B concepts, and support visibility events. You will also assist with press kits, content creation, and represent the hotel's gastronomic experience at events and partnerships.

Fullstack Developer (.NET) to work in Porto (Hybrid) or Lisbon (Hybrid). Requires Bachelor's degree in Computer Science, Computer Engineering, or related field; 3 to 6 years of experience; proficiency in .NET, React, PHP, Wordpress, and Sharepoint; excellent problem-solving and communication skills; fluency in English. SQL, cloud platforms, and ETL experience are a plus.

The Cash App Accountant ensures accurate recognition and support of bank movements in accounting records. Responsibilities include daily bank posting monitoring, monthly reconciliations, and collaborating with teams for reporting and process improvements.

DO & CO seeks passionate chefs to join its F1 team, providing gourmet catering at prestigious events worldwide. Successful candidates are team players, adaptable, experienced in high-volume environments, and possess leadership skills.

Sustainability Manager will own and improve Scope 1, 2, and 3 GHG inventory. Define and maintain GHG and PCF methodologies, processes, and documentation. Lead digitalization of GHG inventory and calculation processes. Support the transition from spend-based to product-based Scope 3 data.

IT Manager/Network Engineer to oversee and maintain FTTH, HFC, and Wifi networks. Troubleshoot issues, support customers, and improve network performance. Requires strong networking, system administration, and problem-solving skills. Master's degree in IT or Telecommunications Engineering preferred. CCNA and software development experience a plus.

Analyst to perform sample analysis, maintain laboratory records, and ensure compliance with GMP and HSE regulations. Requires a university qualification in Chemistry, Chemical Engineering, Pharmaceutical Sciences, or a related field and proven experience in a GMP regulated QC laboratory environment.

Business Development & Strategy Associate to win clients and deliver real work on finance, strategy, M&A, and transformation projects. Must have 2+ years experience in consulting, finance, strategy, venture, private equity, M&A, or business development. AI experience required. Fluent English, German B1 minimum.

Accounts Payable Administrator for Europe East (Greece, Hungary, Poland, Czech Republic, Romania, Slovakia). Processes invoices, ensures compliance with regulations, and provides support to employees and finance colleagues. Requires a Bachelor's degree in finance or accounting and 2+ years of experience in accounts payable. Fluent English required.

Leads global technology liaison activities with research institutes and universities, identifying and nurturing semiconductor technology opportunities. Requires strong technical credibility and experience in R&D, technology planning, or technical partnership roles.

Provide customer service in Norwegian and English, resolving inquiries and managing requests. Requires fluency in Norwegian (C2) and English (B2), customer service experience, and strong problem-solving skills.

Senior Cloud Architect to define, evolve, and govern cloud and enterprise architectures. Responsibilities include leading digital transformation initiatives, designing solutions for critical banking systems, and collaborating with cross-functional teams. Requires a degree in a relevant field, 5-8 years of experience in solution architecture, cloud, or systems engineering, and fluency in Portuguese and English.

Product Manager intern to align product and market strategies, drive innovation, and ensure effective execution of technical solutions. Support product data quality management, product portfolio cleanup, and competitor benchmark implementation. Analyze market needs, desires, and new business opportunities.

Analytical Development Scientist / Senior Scientist will develop, transfer, implement, and validate analytical methods for drug substance and product. Responsibilities include designing and executing analytical studies, supporting formulation and process development, and providing analytical support for regulatory submissions.

Senior Backend Engineer to design, build, and operate scalable Java/Spring Boot microservices on GCP. Experience with Kafka, Redis, Kubernetes, and AI coding tools is required. Full-time freelance, onsite in Lisbon.