react English-speaking jobs in Espinho

Senior Java Developer needed for microservices, APIs, and business logic in distributed architectures. Experience with cloud-native development (Docker/Podman, Kubernetes), modern software development practices, and distributed systems required.

Microsoft Systems Administrator to support enterprise environments with over 10,000 users. Design, administer, and implement infrastructures and systems, including virtualized environments (Hyper-V and VMware), hardware, and Microsoft SQL Server.

The British School of Lisbon seeks a Lead Chemistry Teacher to join their team in September 2026. Successful applicants will have a UK teaching qualification, at least 3 years of UK teaching experience, and exceptional subject knowledge.

BloodFlow seeks a Medical Data Engineer to structure medical knowledge from sources like drug leaflets and clinical guidelines. Responsibilities include building and maintaining a clinical knowledge graph and validating AI pipelines.

Product Designer to join a FinTech/Crypto startup. Will design and maintain the company's design system, create UX/UI designs for mobile and web applications, and collaborate with product managers and development teams. Requires 3+ years of experience, a product mindset, and proficiency in Figma.

Investigate the validity of credit insurance claims, negotiate trade conflicts, and recover outstanding claims.

Sodexo is seeking a Credit & Collections Specialist to join its team. The role involves interacting with customers, managing the dunning process, resolving disputes, and providing collections status updates. The ideal candidate will have relevant work experience, strong communication skills, and fluency in English and German.

Accountant Team Lead will oversee a team of four, ensuring accuracy and compliance of financial processes. Responsibilities include leading team activities, reviewing accounting entries, supporting audits, and collaborating with cross-functional teams.

Senior .NET Developer to analyze legacy systems and design modern, efficient solutions. Requires 10+ years of experience, proficiency in C# .NET, SQL Server, and Angular, and strong collaboration skills.

Service Manager to oversee vendor performance, service delivery, and quality in an enterprise environment. Requires 5+ years of experience in service management, vendor management, and IT service delivery. Must have strong analytical, negotiation, and stakeholder management skills. Fluent in English and Portuguese.

QA Automation Engineer needed to design, implement, and maintain automated testing frameworks for UI and API testing. Will develop AI-assisted testing solutions and collaborate with engineering teams to ensure high-quality software releases. Requires experience with Playwright, API testing tools, and CI/CD pipelines.

Execute manual test cases, analyze application logs, and perform SQL queries to validate system behavior. Coordinate test execution across different time zones and environments.

Papayya seeks a visionary AI Software Engineer to develop AI pilots and core projects. Responsibilities include identifying AI integration opportunities, designing and deploying AI-powered software, and integrating AI solutions with existing systems. The ideal candidate has experience with AI, particularly LLMs, and demonstrates proactivity, responsibility, and autonomy.

Senior Affiliate Manager to own and scale the Nutra vertical. Recruit, activate, and scale straight-sale Nutra affiliates. Manage publisher relationships and optimize campaign performance. Proven track record in straight-sale Nutra affiliate management required.

Provide B2B customer support for international remittances, handling operational and technical issues. Investigate and resolve problems end-to-end, ensuring fast responses and proactive follow-up. Document cases clearly and propose process improvements.

Designs, tests, and optimizes temperature and humidity control systems. Develops refrigeration circuits, builds prototypes, and analyzes test data. Collaborates with various teams on co-development and special builds. Provides technical support to Sales and After-Sales.

Implement and maintain backend for web applications, migrating from legacy frameworks. Build and maintain efficient, reusable, and reliable code. Ensure application performance, quality, and responsiveness.

Own supplier sourcing, negotiation, and execution for a fast-growing Amazon-focused eCommerce brand. Manage landed cost models, coordinate samples and production, and track supplier performance.

Project Manager to support K-12 learning programs. Responsibilities include operational workflow management, budget tracking, content operations, and cross-functional collaboration. Requires advanced Excel skills, proficiency in Microsoft 365, and experience with Atlassian Jira.

Data Engineer with 4+ years experience in cloud environments, specializing in Snowflake, DBT, and SQL. Designs, builds, and optimizes scalable data solutions, collaborating with stakeholders to translate business needs into technical architectures.