freelance English-speaking jobs in Valongo

Senior ML/Data Ops Engineer II will focus on LLM serving, model management, real-time data engineering, and core infrastructure. Responsibilities include deploying and optimizing large-scale open-weights models, managing model weights in Kubernetes, designing CDC pipelines, and tuning ClickHouse for real-time analytics. Expertise in Linux systems, Kubernetes, Istio, and CI/CD tools is required.

Global Logistics Operations Senior Specialist will manage and oversee end-to-end global logistics operations, ensuring compliance with regulations and internal policies. This role coordinates with carriers, third-party logistics providers, and internal stakeholders to optimize transportation and warehouse operations.

Develop high-performance digital systems for the Neuron product line, leveraging FPGA and embedded systems expertise. Collaborate with cross-functional teams to ensure seamless integration and timely delivery of milestones.

This part-time role supports daily office operations, people operations, procurement, and executive assistance. Responsibilities include managing office facilities, coordinating events, supporting recruitment and onboarding, handling vendor relationships, and providing administrative support to executives.

Lead product strategy for a portfolio of high-profile casual games, including arcade, puzzle, and trivia genres. Collaborate with major intellectual property holders to develop engaging gameplay experiences. Mentor and manage a team of Product Managers and Designers. Oversee the full product lifecycle from concept to live-ops.

Geotab is seeking a Customer Success Manager (CSM) to manage a portfolio of SMB customers, driving measurable outcomes through value-based engagement and proactive guidance. Responsibilities include delivering customer outcomes, maximizing net retention, managing renewals, and collaborating with cross-functional teams. The successful candidate will possess excellent communication, analytical, and problem-solving skills, and fluency in English, Portuguese, and Spanish.

Tax Associate will analyze, prepare, and submit Personal Income Tax (IRS) returns for individual clients. Responsibilities include client communication, documentation management, and ensuring compliance with Portuguese tax legislation. Requires a degree in a relevant field, 1-3 years of IRS preparation experience, and advanced Portuguese and English language skills.

Experienced and responsible Residential Primary Deputy – Head of Boarding needed for KCC Summer Camp (June 24 - July 25, 2025). Reports to the Summer Camp Director, overseeing boarding routines, health and safety, staff supervision, and student welfare. Must have experience in residential care, strong leadership skills, and the ability to manage emergencies and communicate with families.

Chief of Staff to drive growth and strategy for a fast-paced company focused on connecting consumers with the best products for their needs in banking, insurance, and utilities. Responsibilities include leading teams, developing innovative products and services, and amplifying brand presence. Must be highly ambitious, proactive, and possess strong communication and organizational skills. Native or near-native Portuguese proficiency required.

Quantitative Python Developer needed to architect and design data management solutions. Develop and maintain actuarial algorithms and models in Python, collaborating with actuarial consultants and international teams. Must have strong Python skills, experience with scientific libraries, and understanding of OOP and FP principles.

Drivers will collect high-quality visuals of streets, points of interest, and public spaces using 360° cameras and lidars. Data will be stored on onboard computers and used to enhance an online mapping platform.

Senior Data Engineer will deliver data work on client engagements, including pipelines, transformation layers, models, and infrastructure. Responsibilities include adapting to different client contexts, defining internal standards for data work, mentoring data engineers, and contributing to proposals. Requires proficiency in SQL, Python, data modeling, transformation architecture, pipeline design, data testing, data observability, CI/CD for data, data governance, cost optimization, and platform fluency.

Data Analyst (French Speaker) needed for a project in Porto (Hybrid). Requires a Bachelor's degree in a related field, proven experience as a Data Analyst, proficiency in SQL and data visualization tools, strong analytical skills, and fluency in French (C1) and English.

Lead Data and Analytics Platform teams, building and operating data infrastructure for decision-making across GoCardless. Develop a high-performing team of data engineers.

Quality Engineer needed to build and validate high-quality systems. Experience with manual and automated testing, debugging, and writing actionable bug reports is required. Must understand system architecture, data flows, and API testing. Contribute to automation strategy and collaborate with engineers and product teams.

SAP FI/CO Consultant will shape and modernize finance and controlling landscape. You will work closely with Finance, IT, and business stakeholders to design robust solutions for the SAP ECC → SAP S/4HANA transformation. This role combines deep SAP expertise, business understanding, and hands-on ownership.

Full-Stack Developer to build scalable features for an application marketplace, including dashboards, APIs, and user-facing components. Develop and maintain RESTful and/or GraphQL APIs. Collaborate with Product, UX/UI, and Partner teams. Requires at least 3 years of experience as a Full Stack Developer with JavaScript/TypeScript, PHP, APIs, and relational or non-relational databases.

Nox Health Portugal seeks a Value Stream Owner (Patient Experience) to lead the development and delivery of patient experience within the Nox Cloud platform. This role defines requirements, manages priorities, and drives the evolution of patient experience across onboarding, eligibility, checkups, and teleconsult.

Associate Analyst will define and implement quality control techniques to verify the quality of raw materials, intermediates, and end products. The role involves managing quality control activities, ensuring adherence to GMP and regulatory guidelines, and collaborating with internal departments.

Develop, optimize, and maintain Oracle databases and PL/SQL code. Define and govern data models in collaboration with architects and business stakeholders. Analyze and improve database performance. Integrate Oracle databases with .NET / Entity Framework. Ensure data consistency, quality, and traceability.