freelance English-speaking jobs in Valongo

The Laboratory of Polymer Chemistry (PCL) is offering a 12-month research grant, renewable up to 36 months, for a First Stage Researcher (R1) in Materials Science and Engineering. The grant supports work on the MINEPIPE project, developing PE100-based formulations for high-performance pipes.

Senior Backend Engineer to design, build, and maintain scalable backend systems with real-time capabilities using Python. Collaborate with cross-functional teams and contribute to best practices across code quality, testing, CI/CD, and infrastructure.

Tech Mahindra seeks a Recruiter to manage the full recruitment process, including sourcing, interviewing, and onboarding candidates. The role involves posting job advertisements, coordinating with stakeholders, and maintaining social media channels.

Senior Software Engineer will design, build, and maintain production-grade Scala-based backend services. Responsibilities include owning the full software development lifecycle, collaborating with SREs, and contributing to observability within the platform.

Provide customer service to Audi clients via phone, chat, and email. Document interactions, collaborate with colleagues, and stay updated on products and services. Must have high-level Dutch (C1) and good English (B2), 1 year of call center experience, and passion for automotive and digital technology.

Lead project planning and execution in Healthcare and Cybersecurity, ensuring scope, timelines, and resources are effectively managed. Coordinate stakeholders, monitor progress, and contribute to cybersecurity initiatives. Requires 1+ year experience in project management, healthcare, and information security. PMP, CAPM, or PRINCE2 certification preferred.

Fluent Portuguese-Brazil speaker needed to support a streaming platform. Apply tags and metadata to video content, ensuring accurate data entry and optimal viewing experiences. Collaborate with a team to improve discoverability and ad-insertion. Must have experience with video editing or metadata management and a strong understanding of the digital content landscape.

Project Manager with 7+ years of experience and Lean Six Sigma Black Belt certification required. Must have a strong project management background and experience with improvement projects. Excellent communication, problem-solving, and presentation skills are essential. International exposure preferred. Fluent in English (B2).

Software Developer to build media-related software features, ensuring timely delivery and quality standards. Requires C#, .NET, web development, SQL, Python, and 2+ years of experience.

Finance Assistant will support the Finance team with Accounts Payable and Accounts Receivable activities. Responsibilities include invoice processing, supplier and customer account management, month-end close activities, and ensuring compliance with financial regulations.

Kitchen Designer needed for Modulnova Lisboa showroom. Develop functional and beautiful kitchen layouts, select premium materials, and present designs to clients. Proven experience in kitchen design or a related field required.

Vendor Management Officer needed for NATO Secret clearance position. Experience in vendor management, procurement, or contract administration required. Duties include onboarding/offboarding contractors, drafting Statements of Work, and recommending procurement strategies.

Gain hands-on experience in investment banking through a 10-week virtual internship. The program includes intensive training in financial modeling, valuation, and industry research, followed by eight weeks of work on live projects with a Managing Director or Partner at a boutique investment bank.

The Workforce Planning & Strategy Specialist will own end-to-end workforce demand and capacity planning for key operational functions. This role translates business strategy and operational drivers into robust workforce plans and partners with Operations and Finance leaders to support budgeting, hiring plans, and investment decisions. The ideal candidate will have strong experience in workforce planning, capacity planning, or operational strategy and advanced Excel skills.

Design, implement, and maintain data pipelines using dbt, Trino, and Spark. Develop dashboards and reports, write SQL queries and Python scripts, and ensure data quality and compliance. Collaborate with developers on data integrations.

Junior Order to Cash Specialist needed for a detail-oriented role in Porto. Manage O2C processes, support invoicing, collections, and payment follow-ups. Bachelor's degree in Finance, Accounting, or related field required. Fluent German and advanced English skills are essential.

Leads a team of CRC Coffee Specialists, ensuring high-quality customer service for the Nespresso Brand. Manages team performance, provides training and development, and collaborates with support functions to improve customer experience. Requires one to two years of experience as a team leader in a customer-facing role, proficiency in German and Italian, and strong communication and conflict management skills.

Scrum Master / PMO needed for IT or software development projects. Requires experience with agile methodologies, project management, and strong communication skills. Fluent English is essential.

Electronics and Electrical Testing Project Coordinator will coordinate projects, design testing hardware, and support project management and software development teams. Requires a Bachelor's or Master's degree in Electrical Engineering (Electronics), 2+ years of experience, and fluency in English.

Experienced Luxury Real Estate Agent to manage a portfolio of buyers and sellers in the mid-market and luxury residential space. Develop sales strategies, guide clients through complex transactions, and provide exceptional service. Minimum 3 years of success in the luxury residential sector required. Fluency in English required, Portuguese a plus.