15 frontend developer English-speaking jobs in Portalegre

You'll work at the intersection of game design, frontend engineering, and regulatory compliance — ensuring ... Verify frontend RNG output against certified math models, validating pay tables, RTP values, hit frequencies ... Core QE : Test planning · Bug lifecycle · Regression suites · Root cause analysis · Risk-based testing Frontend

Contribute across the tech stack: You'll work in React (JavaScript/TypeScript) on the frontend and Python ... Be a team player: Sometimes you'll be iterating on ML pipelines; other times you'll be refining a frontend

integration: sensor arrays, DAQ, real-time data streams The full stack: Node.js / TypeScript API, Next.js frontend

Portugal (visa sponsorship not available) Nice to Have Experience with React, Stimulus, or Hotwire on the frontend

Your MissionAs a Senior Mobile Developer, you will lead the design, development, and evolution of mobile

What do you need to be a SMART Java Developer?

Backend Developer will integrate cashier systems and platforms for a European payment platform. Responsibilities include developing and optimizing algorithms for data parsing, ensuring system efficiency and reliability, and maintaining a clean codebase. Requires proven experience in distributed backend applications, preferably Node.js and TypeScript, and a strong understanding of scalability and performance optimization.

Experience with React in a collaborative frontend/backend environment.

Software Engineering Technical Specialist to design, develop, and deliver scalable distributed software solutions. Expertise in Python, Java, embedded devices, firmware, APIs, and IoT protocols (MQTT, HTTP, LoRaWAN) required. Experience with container-based middleware, platforms (Mapify, City as a Platform, IBM Maximo, ThingsBoard), and data management (SQL, PostgreSQL) is preferred.

Develop solutions in areas such as Security, Systems, Databases, and Networking Solutions. Contribute to the design, development, integration, delivery, and evolution of highly scalable distributed software. Work with software engineers, architects, product managers, and partner teams. Coach and mentor engineers to design and implement highly available, secure, distributed software.

Contribute actively as a Lead back-end developer.

best practices around build, deployment, and coding standards • Must be able to work as an independent developer

Senior .NET Core developer with experience in APIs, background services, and cloud environments. Must have experience with event-driven and data-driven architectures, Kubernetes, messaging systems, observability, and database management. Knowledge of LLMs, React, and AI tools is preferred.

Design, develop, and maintain automated test frameworks and automated test suites for frontend, backend

Senior .NET Core Developer with experience in cloud environments, event-driven architectures, and Kubernetes orchestration. Strong knowledge of messaging systems, observability, and database management. Experience with LLMs and AI tools is required. React knowledge is a plus.