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Senior Full-stack Developer React/Node (Blockchain) at Lemon.io. Location Information: . Are you a talented Senior Developer looking for a remote job that lets you showcase your skills and earn competitive compensation? Look no further than . Lemon.io. — the marketplace that connects you with hand‑picked startups in the US and Europe.. We are currently looking for a Senior Software Developer for our client.. The overview will be added to the job listing, but we also have other projects for Senior Full‑Stack Developers with different requirements. So, if you have 4+ years of commercial experience in software development and are proficient in React & Python, React & Ruby, AI Engineering, Python & LLM, UI/UX Design, React & Node, Blockchain, or WordPress & Figma, we’d be happy to connect you with a project that suits your experience. Just apply, and we’ll share more details with you.. Client’s time zone: GMT-5:00. Rate: up to $60/hour. Project type: Part-time, 20 hours per week. Overlap: At least 4 hours overlapping with 9 AM–8 PM EST (US Eastern). Tue/Thu: Start by 11 AM ET for overlap and check‑ins with the client. Any three days per week (including Friday): Work until 6 PM ET to triage any production bugs alongside CS.. Requirements:. 5+ years of experience as a Full‑Stack Software Engineer in production environments. 5+ years of commercial experience with . React. and . TypeScript. 4+ years of expertise with . Node.js. Experience refactoring complex codebases. Experience with AI tools for supercharging of the development or curiosity about AI trends, openness to learning with the team. Experience working with third‑party integrations and migrations. Skilled in investigating issues and applying fixes. Excellent problem‑solving abilities and strong communication skills. Self‑motivated, independent, and adept at remote collaboration. Understanding of blockchain principles is required, while hands-on exp. with blockchain ecosystems is a plus (nice-to-have).. Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.. Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.. Strong self-organizational skills — ability to work full-time remotely with no supervision.. Reliability — we want to trust you and expect that you won’t let us and the client down.. Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.. Sounds good for you? . Apply. !. If your experience matches our requirements, be ready for the next steps:. VideoAsk — watch a short video about our startup, up to 10 minutes.. Complete your profile on our website.. 30-minute screening call.. Technical interview.. Feedback.. Interview with the client - coding tasks included.. P.S. We work with developers from 50+ countries in different regions:. Europe, LATAM, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), Canada, and the UK. However, we have some exceptions.. At the moment, we DON’T have a legal basis to accept applicants from the following countries:. European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.. Latin America: Cuba and Nicaragua. Most Asian countries and Africa.. We expand and shorten the list of exemptions regularly.