react English-speaking jobs in Espinho

Java Developer will design and develop low-latency pricing engines for Spot and Forward FX trading. Collaborate with traders and teams to enhance and modernize existing systems. Must have Java development experience in multithreaded systems and a background in FX/FWD trading systems or high-performance, low-latency environments.

Provides onsite IT support, including hardware maintenance, software installation, and user assistance. Requires 2-3 years of PC/laptop hardware service experience, strong communication skills, and proficiency in English (B2).

Product Design Assistant supports product design and light video/visual content creation. Assists in creating wireframes, mockups, prototypes, and visual assets. Collaborates with teams to ensure consistent design implementation. Requires 1+ year of experience in product design, UI/UX, or related roles and a portfolio showcasing digital design work.

Growth Associate will execute multi-channel acquisition strategies, write campaigns, nurture pipeline, and analyze performance. This role involves creating proposals, content, and outreach materials for enterprise clients.

Maintenance Technician to oversee and coordinate daily maintenance operations ensuring the seamless functioning of a cannabis processing facility. Responsibilities include diagnosing and repairing malfunctions in industrial machinery, performing preventive and corrective maintenance, and ensuring compliance with quality, safety, and environmental standards. Requires 4 years of experience in maintenance supervision and operation, training in electromechanical maintenance, and fluency in Portuguese and English.

Mechanical Engineer needed for product development at TEKEVER, a European leader in unmanned technology. Translate complex needs into functional product designs and iterate on features. Must have a Mechanical or Automotive Engineering degree and advanced Portuguese and English skills. Experience with Solidworks and fabrication methods is preferred.

Volga Partners seeks a Language Data and Quality Reviewer fluent in European Portuguese and English for a freelance, task-based project. The role involves analyzing datasets, identifying data quality issues, and providing recommendations for improvement.

IT Support Specialist to join a technology team focused on Salesforce Service Cloud. Provide support, diagnose technical issues, and collaborate on implementation and testing. Requires 2-4 years of Salesforce development experience and strong Service Cloud knowledge. Fluency in Portuguese and English is essential.

Senior Cloud Engineer needed for a remote-first role. Design and evolve backend architectures, shape APIs, and contribute to digital solutions. Requires 4+ years of experience in Java/Kotlin server-side development, strong understanding of Computer Science fundamentals, and experience with Kubernetes, Cassandra, Kafka, and Akka.

Contract Manager to support O&M projects across all energies and geographies. Define contractual strategies, participate in negotiations, review contracts, and ensure legal and internal compliance.

Leads marketing strategy and execution for HIV in Portugal. Develops marketing plans, manages budgets, and ensures compliance. Requires 5+ years of marketing experience in healthcare or pharmaceuticals.

Provide customer support via phone, email, and chat for account administration, billing, and order follow-up. Resolve customer escalations and offer after-sale support. Must be proficient in Portuguese, English, and Spanish.

Senior Data Engineer to build and maintain scalable data pipelines in distributed environments. Experience with Spark/PySpark, data modeling, and cloud platforms required. Hybrid work model with 1 day in office per week.

Senior Accountant to support monthly closing, inventory accounting, fixed asset management, intercompany accounting, and tax reporting. Requires advanced degree in Finance/Accounting, 5-7 years experience, CPA designation, and proficiency in Portuguese GAAP, IFRS, and tax codes. Excellent English skills required.

Senior Frontend Developer to design, develop, and deploy full-stack applications with a focus on React, Next.js, and Flutter. Collaborate with backend teams and contribute to application architecture. Requires 5+ years of experience and fluency in Portuguese and English.

Provide French and English technical support to customers via ticketing systems, email, and chat. Troubleshoot system, data, and integration issues using SQL to analyze databases.

Senior General Ledger professional required for a medical technology company. Responsibilities include journal entry processing, account reconciliation, month-end and year-end closing, financial reporting, and team collaboration. Requires a Bachelor's degree in Finance, Accounting, or related field and 4+ years of experience in general ledger accounting. Proficiency in English and Microsoft Excel is essential.

Python Developer needed with strong experience in Python (3.9+), data engineering, and software engineering best practices. Must have knowledge of data manipulation libraries (NumPy, Pandas), performance optimization, and scalable processing. Familiarity with DevOps, CI/CD, and translating business needs into technical solutions is required.

NTU International A/S seeks a Research, Data & Market Analysis Specialist to support a project analyzing publicly accessible urban EV charging infrastructure across the EU. The 16-month assignment requires a Bachelor's degree and 10+ years of experience in research, data analysis, and mobility studies.

Impress, Europe's leading health-tech innovator, seeks a Junior Operations Specialist to manage data, track tools, and streamline processes across 9 countries.