freelance English-speaking jobs in Guimarães

Senior Ruby on Rails Engineer to design and build AI-powered features into an existing Rails application. Integrate LLM capabilities, architect backend services, and collaborate with product and design. Strong Ruby on Rails experience and interest in AI/LLM integrations required.

The Arquitecto Junior will support the design and development of architectural and interior projects, contributing to concept creation, technical drawings, and project documentation.

Pre-Sales Engineer to support application ecosystem growth. Provide technical guidance on third-party application integration. Collaborate with Product, Engineering, Sales, and Business Development teams.

Systems Engineer (SRE, Observability & Performance Engineering) to improve system reliability, performance, and monitoring. Responsibilities include designing, implementing, and evolving observability platforms, analyzing incidents, defining performance engineering strategies, and automating performance testing. Requires strong SRE practices, experience with observability tools (Zabbix, Grafana, InfluxDB), performance testing, scripting, and Windows/Linux environments.

Microelectronics Digital Designer will design, verify, and integrate digital blocks for power-management ICs and mixed-signal PMICs. Responsibilities include developing RTL, UVM-based verification environments, and collaborating with cross-functional teams.

Tech Mahindra seeks a Quality Assurance Analyst fluent in Spanish and English to evaluate and rate various content types (audio, video, text, photos). The role requires strong analytical skills, attention to detail, and the ability to provide written rationales for ratings.

Senior Python Engineer to develop and enhance Conversational AI solutions using RAG and LLM technologies. Design data pipelines, build REST APIs, and support AI use case onboarding.

Analyzes financial data, supports pricing strategies, and contributes to cross-functional initiatives. Creates reports, dashboards, and presentations. Monitors KPIs and assists in implementing pricing strategies.

Credit Analyst to join the Credit & Account Services team in Lisbon. Responsibilities include booking loans, managing credit limits, preparing credit limit renewal applications, and drafting credit documentation. Requires a university degree in a related field, 1-3 years of banking experience, fluency in English, and proficiency in Microsoft Office. Must be available to work night shift and/or a rotating schedule.

Senior Accountant needed for international entertainment and live events company. Manage full-cycle accounting under Portuguese GAAP, ensure Madeira (MIBC) compliance, and handle tax and legal filings. Proven experience with MIBC structures and Portuguese tax/accounting rules required.

Broadcast PCR Technician will join the Broadcast Operations team, ensuring reliable live sports broadcasts. Responsibilities include monitoring, coordinating, and managing technical resources, operating routing and monitoring systems, and troubleshooting operational issues.

Sales Engineer to drive sales growth within the vehicle and automation industry. Identifies new business opportunities, builds customer relationships, and provides technical support. Requires a Master's degree in Engineering and experience in technical sales.

Senior IT Auditor will lead SOX 404b testing, evaluate control effectiveness, and partner with control owners to strengthen IT General Controls and automated controls.

Data Engineer to design, develop, and maintain data pipelines and AI products in a cloud-based environment. Requires 5+ years of experience, proficiency in Python, Databricks, dbt, and the Azure ecosystem.

Develop embedded software including device drivers, bootloaders, and system initialization routines. Collaborate with hardware, system, and application teams. Strong proficiency in C and/or C++ required. Experience with embedded systems development and FreeRTOS.

Supports the Spa Manager in overseeing daily spa operations, ensuring guest satisfaction, and achieving revenue targets. Supervises spa staff, manages schedules, and ensures compliance with spa standards. Requires a hospitality or spa management degree and 3-5 years of relevant experience.

Lead restaurant and bar operations, ensuring high service standards, profitability, and alignment with Hyatt brand standards. Manage teams, oversee daily operations, and control costs to achieve revenue and operational goals.

Business Development Manager to drive market growth in LATAM. Develop business relationships, execute strategies, and achieve revenue targets. Proven FX industry experience and fluency in Spanish or Portuguese required.

Account Manager will support customer implementation of Easy4Pro logistics platform, provide training, and analyze market opportunities. Responsibilities include customer retention, upselling, and identifying product improvement ideas. Requires logistics/supply chain experience, fluency in English, and a university degree.

Lisbon-based hackathon for mid-level engineers (max 3 years experience) in Full-Stack, Backend, AI, or Data Engineering. Participants will solve a business challenge over 48 hours, with a focus on practical skills and problem-solving. Top performers receive a prize pool, fast-track hiring opportunities, and profile inclusion in the RecT Talent Database.