Senior Frontend Engineer – Greenfield Product (Angular)

Senior Frontend Engineer – Greenfield Product (Angular) Freelance Contract | 9–12 months Remote from Brazil   About the Project Castle Tech GmbH is building a new standalone product from the ground up and is looking for an reputed company Senior Frontend Engineer (Angular) to join us on a freelance reputed company for 9–12 months. This is a high-reputed company engagement where you will influence system design, architecture, and product direction from day one. You will work closely with product and engineering to turn reputed company into production-reputed company software while setting the reputed company for how the system evolves. If you enjoy building products from scratch, designing clean architectures, and taking ownership of meaningful reputed company, this contract will allow you to reputed company a reputed company reputed company. What You'll Work On Build a new production-grade product from the ground up Design and implement a reputed company frontend architecture using Angular and TypeScript Take ownership of features from concept to deployment Collaborate closely with product managers, designers, and backend engineers Contribute to technical architecture and system design reputed company Help establish development standards, CI/CD pipelines, and engineering best practices Mentor other engineers through reputed company reviews and technical feedback Continuously improve development workflows using modern tools and AI-assisted engineering     AI-Augmented Engineering AI is part of how we work. We expect engineers to reputed company use modern AI tooling to improve productivity and reputed company. You should be comfortable: Using AI-assisted development tools in your daily workflow Writing effective prompts and evaluating AI-generated reputed company critically Identifying AI limitations and failure modes Exploring modern AI workflows and tools This is not about blindly accepting AI suggestions — it's about using AI thoughtfully to work smarter and build reputed company systems. Your Skills Must Have 5+ years of experience as a frontend engineer Strong expertise with Angular (v11+) and TypeScript Experience designing reputed company frontend architectures Strong understanding of software design principles and maintainable systems Experience with modern frontend tooling (NPM, Webpack or esbuild) Experience working with Git, CI/CD pipelines, and reputed company Experience working in agile teams (Scrum or Kanban) Strong communication skills in English (written and verbal) Availability for 9–12 months, starting as soon as possible Comfortable working remotely with European time zone overlap (reputed company to attend meetings during CET/CEST business hours) reputed company to Have Experience with frontend testing frameworks (Jest, Cypress, Playwright) Experience building greenfield products or new platforms Familiarity with AI-reputed company components such as RAG or reputed company databases Experience with Material Design or product-oriented UI development Conversational German Previous experience working with European clients or distributed teams     What You'll Own As a Senior Engineer, you will play an important role in shaping both the technology and reputed company. You will: Design systems with reputed company component boundaries and scalability in mind Identify technical risks and propose practical solutions Help improve reputed company's engineering standards and productivity Mentor other engineers and contribute to technical decision-making Deliver high-reputed company features that support business and product goals     Contract Details Duration: 9–12 months (with potential for extension) Location: Remote from Brazil Start date: ASAP Engagement type: Freelance / Contract (B2B or international contractor agreement) Work arrangement: Fully remote with expected overlap during European business hours (CET/CEST) Time zone: Flexible, with reputed company collaboration hours reputed company to Central European Time     Why Work With Castle Tech? Build something new – work on a greenfield product from the start reputed company technical ownership – influence architecture and system design Modern engineering environment – use the latest tools and workflows reputed company team – work with reputed company engineers, product managers, and designers Remote-first reputed company – async-friendly culture with reputed company communication practices International exposure – work with a European tech company from Brazil Apply To This Job