Senior Full-stack Developer
Role Overview
As a Senior Full-stack Developer, you will build full-stack web applications from scratch, replicating enterprise software using React.js, Node.js, and other technologies. You will collaborate with internal teams to deliver scalable solutions and play a key role in advancing AI systems by creating tools for training models. This position involves working in a fast-paced startup environment, likely requiring a 6-day work week to meet project demands.
Perks & Benefits
This role offers remote work with a flexible worldwide location, though you must align with Pacific Time (GMT-8) for collaboration. You'll receive compensation for a 10-hour test task ($500) and have the potential for career growth through a long-term engagement of up to one year. The culture is dynamic, focused on AI innovation, but requires openness to weekend work and a demanding schedule.
Full Job Description
Headquarters: New York, NY URL: https://lemon.io
Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io the marketplace that connects you with hand-picked startups in the US and Europe. Currently, we are seeking a Senior Full-Stack Developer for our client. It s a great opportunity, as they are one of the fastest-growing YC companies. Their investors include Y Combinator and Box Group, and they support leading AI labs. Joining this project offers the chance to play a key role in the AI movement. Details:
40h / week - very likely a 6-day work week due to the fast-paced nature of the project start date: within 2-3 weeks Full-time within 2-3 weeks 2-3 months with potential to extend to 1-year engagement. (GMT -8:00) Pacific Time (US & Canada)
What the Company Does
Develops tools and services for creating high-precision datasets used to train advanced AI models. Builds simulated environments and functional prototypes of well-known digital products (such as communication platforms, CRM systems, productivity tools, financial interfaces) so AI agents can learn to complete real-world tasks. Creates internal platforms for data management, quality control, and automation of data generation workflows. Works on long-term technologies that help AI systems better understand complex tasks, business logic, and user interfaces.
Requirements:
5+ years of experience with React.js and Node.js Expertise in JavaScript, Tailwind CSS, Next.js, AWS, and SQL is a must
TASKS/RESPONSIBILITIES
Develop full-stack web applications from the scratch, replicating existing enterprise software. Collaborate with internal management and technical leads. Participate in a take-home assessment and interviews as part of the selection process. Deliver production-ready, scalable solutions using Next.js, Tailwind, SQL/Redis, and related technologies.
IDEAL PROFILE
You have a diverse skillset and are open to learning new technologies. You have strong experience building stuff from scratch. Your background includes products that are used and loved by many; working at big companies or popular startups is a big bonus.
IMPORTANT
You are open to weekend work. It s likely going to be a 6-day work week regularly. You are open to completing a test task for this project, which will take roughly 10 hours and will be compensated (500$).
Other Options from Lemon.io NOT YOUR TECH STACK? We have different projects for Senior Developers, so if you have 4+ years of commercial experience in software development and you are fluent with React & Node.js, React & Python, Python&Node, Swift & SwiftUI, Golang, AI Engineering, Data Engineering, Python & LLM, Blockchain, WordPress, Unreal Engine, Vue & PHP, MLOps, React & PHP, Rust, Angular & PHP, Game Development, Svelte & TypeScript, Svelte & Node, Svelte & Python, or Shopify & JavaScript we would be happy to communicate and provide you with a project that matches your experience. Just apply, and we will share more details with you. 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 Magic Box (we are looking for the best project for you).
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. Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.
To apply: https://weworkremotely.com/remote-jobs/lemon-io-senior-full-stack-developer-6
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