freelance English-speaking jobs in Barreiro

Software Developer specializing in SQL and Grafana, designing dashboards with complex SQL queries targeting a ClickHouse database. Responsibilities include developing repeatable dashboard delivery processes, establishing QA plans, and writing unit tests. Experience with Java, Python, Git, Jenkins, and AWS is beneficial.

Senior Fullstack Developer with 10+ years of experience needed. Expertise in Java (Spring Boot, JPA, Hibernate) and frontend technologies (React, Angular). Proven track record in Telecommunications, Technology, or Banking projects.

Lead an engineering team building and scaling tools and products. Conceptualize new features, direct technical decisions, and manage team performance.

This Technical Writer & Communication Trainee role supports engineering teams by improving clarity and accessibility of internal R&D documentation. The ideal candidate has a background in communication, media, or journalism and strong written and verbal communication skills.

AI Automation Engineer will design, build, and deploy AI agents and automation scripts to improve Managed Services workflows. Responsibilities include automating support tasks, optimizing SQL queries, and integrating internal tools via APIs. Strong Python, AI/LLM integration, and SQL skills are required.

Sales Manager to drive commercial growth in European markets for an EV charging and BESS solutions provider. Develop new business opportunities, build strategic partnerships, and support regional sales targets.

Lead Mechanical Engineer to design rugged enclosures for antennas, sensors, and electronics. Designs will utilize plastics and aluminum, incorporate IP-rated sealing systems, and withstand harsh environments. Requires expertise in CAD, simulation, and prototyping.

Manages monthly, quarterly, and annual HR reporting processes for TUI InfoTec, ensuring data quality, compliance, and timely delivery of insights. Identifies opportunities to automate reporting processes and develops HR reports, dashboards, and visualizations. Collaborates with cross-functional teams and represents Group IT in the CoE People Analytics. Requires proven experience in HR Controlling & Reporting, strong analytical skills, and fluency in German and English.

Lead Backend Software Engineer will design, build, and operate distributed systems, leading end-to-end delivery of product features. Requires strong JVM-based technologies (Java or Kotlin) skills and experience with cloud-based, production-grade systems.

Leads the design and development of complex Salesforce B2B Commerce solutions. Develops and customizes storefronts, implements integrations, and mentors junior engineers. Ensures software quality, performance, and architectural integrity.

Senior Node.js Developer to design, develop, and maintain complex web applications. Experience with Node.js, Angular, SQL, TypeScript, and JavaScript required.

Revenue Systems & Performance Manager will operate and configure Atomize RMS, define pricing frameworks, and collaborate with Hotel Managers to optimize revenue and profitability.

Powerplant Systems Specialist needed to support maintenance and engineering for executive jet fleet. Responsibilities include developing powerplant data, identifying fleet improvements, coordinating modifications, and reviewing reliability reports. Requires operational powerplant experience in EASA Part CAMO or Part 145 organizations.

REB Realty Portugal seeks ambitious Private Brokers to join their team. Successful candidates will have a university degree (preferred areas: Business, Real Estate, Law, Architecture, or related), Portuguese nationality or residency, fluency in English, and strong client service orientation.

Senior Telecom Data Analyst will analyze and validate network performance indexes, define data feeds, perform data validation tests, and analyze customer issues related to metrics and data feeds. Responsibilities include implementing reports, designing data adapters, and analyzing product requirements. Requires a Master's degree in a relevant field and strong knowledge of telecom networks, protocols, and data analysis tools.

The Events & Marketing Coordinator plans and executes Microsoft's digital events. This role acts as a project manager, coordinating VML resources, Microsoft stakeholders, and third-party vendors. The ideal candidate is a German native speaker with 4+ years of experience in marketing initiatives, including events management.

Software Architect and Team Lead with 80% architecture and 20% team leadership responsibilities. Requires experience designing software systems using DDD and hexagonal architecture, full-stack .NET development, modern web frameworks (React or Angular), and DevOps principles. Fluent English required.

Designs, builds, and operates AI capabilities for real-world applications, including LLM-enabled workflows, RAG, and agent-based systems. Translates business needs into working AI designs and collaborates with architects, platform engineers, and stakeholders. Contributes reusable AI assets and builds with production discipline, ensuring testing, version control, and CI/CD alignment. Owns small-to-mid AI workstreams from design through release and operational handover. Engineers RAG and agent-based capabilities with clear evaluation, failure-mode handling, and measurable outcomes. Partners with solution architects to integrate AI into broader delivery.

Business Analyst for Credit Risk Stress Testing. Understands and analyzes business needs, collaborates with stakeholders, and participates in stress test result production. Requires a Bachelor's degree in a relevant field, 3-6 years of experience in credit risk, IFRS9, Basel regulations, or stress tests, proficiency in SQL and Python, and fluency in English.

Linguist to support AI training initiatives and content creation. Responsibilities include creating linguistic content, resolving ambiguity and bias issues, performing QA on model outputs, annotating datasets, and conducting linguistic research. Requires deep understanding of linguistic theory and language structure. Experience with computational linguistics, corpus analysis, or LLM training is a plus.