Empregos de freelance fullstack engineer em Lisboa

UMO, a Lisbon-based fintech, is seeking a Senior Team Lead for the back-office platform. You will head a squad of fullstack engineers, shaping internal tools and admin consoles that power compliance and operations. You’ll own end-to-end outcomes, drive architecture, and mentor teammates across a regulated fintech stack.You’ll ship weekly, collaborate...

UMO, a Lisbon-based fintech, is seeking a Senior Team Lead for the back-office platform. You will head a squad of fullstack engineers, shaping internal tools and admin consoles that power compliance and operations. You’ll own end-to-end outcomes, drive architecture, and mentor teammates across a regulated fintech stack. You’ll ship weekly, collaborate...

About Us At CONKORD (formerly the RIT Group), we don’t just implement technology; we engineer the future. By unifying the specialized expertise of Readiness IT, Ritain.io, Latitudde, and Red IT, we have emerged as a global high-tech powerhouse driven by AI and technical excellence. Why build your career at CONKORD? - The Best of Both Worlds: Benefit...

Freelance Electrical Engineer needed for AI training projects, involving problem design, AI evaluation, and validation using Python.Requires 3+ years of experience and strong English.

At CONKORD (formerly the RIT Group), we don’t just implement technology; we engineer the future. By unifying the specialized expertise of Readiness IT, Ritain.io, Latitudde, and Red IT, we have emerged as a global high-tech powerhouse driven by AI and technical excellence. Why build your career at CONKORD? The Best of Both Worlds: Benefit from the...

Talent has no borders. Proxify's mission is to connect top developers around the world with opportunities they deserve. So, it doesn't matter where you are; we are here to help you fast-track your independent career in the right direction. 🙂 Since our launch, Proxify's developers have successfully worked with 1200+ happy clients to build their products...

10x Team is seeking a Freelance Principal Software Engineer – AI Trainer to shape AI-assisted software engineering outputs. This remote, project-based role is open to professionals in the EU or UK, with 8–20 hours per week of flexible, asynchronous work. You will leverage your architectural leadership to improve AI models and provide expert feedback....

Aubay Portugal is seeking a Fullstack Developer to join the EQTools team.You will build frontend solutions with Vue3 and design backend-for-frontend services using Node.Js and TypeScript.You'll contribute to migrating existing Node.Js applications to Kotlin and Spring Boot, while collaborating with cross-functional teams to deliver high-quality software.We...

Mechanical Engineer sought to train AI models remotely, designing engineering problems and validating results with Python.

WHO ARE WE HIRING? The Fullstack Developer is responsible for designing, developing, and maintaining both front-end and back-end components of web applications. This role requires expertise in multiple programming languages, frameworks, and databases to build scalable, high-performing, and user-friendly applications. The Fullstack Developer collaborates...

Backend-leaning Fullstack Engineer to develop features, enhancements, and resolve defects.Requires 6+ years of backend web development, primarily with Ruby on Rails, and proficiency in English and Portuguese.

About ElevenLabs ElevenLabs is an AI research and product company transforming how we interact with technology. About ElevenLabs ElevenLabs is an AI research and product company transforming how we interact with technology. We launched in January 2023 with the first human-like AI voice model. Today, we serve millions of users and thousands of businesses -...

Updated: 07 July 2026 Freelance | 8–20 hrs/week | Remote (EU/UK) Are you an accomplished Principal Software Engineer passionate about shaping the future of artificial intelligence? Join 10x Team as a Freelance Principal Software Engineer – AI Trainer and leverage your technical expertise to enhance advanced AI models, all while enjoying the freedom of...

10x Team is seeking a freelance Principal Software Engineer to act as an AI Trainer, reviewing AI-generated outputs and shaping how AI systems apply software engineering principles. This flexible, remote, project-based role suits someone based in the EU or UK with extensive architecture and leadership experience. You will review and refine AI...

Journi, a London-based technology consultancy, is seeking a Full Stack Engineer with expertise in .NET and Vue to design, develop, and fine-tune web applications end-to-end. You will work across frontend and backend using .NET 6+, VueJS 2/3, Web API, HTML, CSS and TypeScript, collaborating with the client's team. The role is fully remote-first and offered...

Freelance Software Developer (Ruby) - AI Trainer 4 days ago Be among the first 25 applicants This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English proficiency. At Mindrift, innovation meets opportunity. We...

Freelance AI Trainer - Civil Engineering & Python 4 days ago Be among the first 25 applicants This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of English. At Mindrift, innovation meets opportunity. We believe in...

Freelance Software Developer (Kotlin) - AI Trainer 1 day ago Be among the first 25 applicants Get AI-powered advice on this job and more exclusive features. This opportunity is only for candidates currently residing in the specified country. Your location may affect eligibility and rates. Please submit your resume in English and indicate your level of...

TypeScript Coding Specialist - Freelance AI Trainer Project Salary : €6 - 65 hourly Empresa : Jobgether Tipo de Emprego : Periodo Integral Remote / Work from Home Descrição do Emprego - TypeScript Coding Specialist - Freelance AI Trainer Project This position is listed on behalf of a partner company, who manages all applications and next steps. Our...

Senior Fullstack Developer (Java & React/Next.js) About the RoleWe are expanding our International Tech Hub in Lisbon and looking for a Senior Fullstack Developer. We value generalizing-specialists—adaptable, curious engineers eager to work across the stack, drive architecture, and mentor team members in a flat, self-managed environment. Key...