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Senior full-stack engineer

Lemon.io·Salary not specified

Primary stack

ReactNode.jsTypeScriptJavaScript

Nice to have's

OpenAILangChainAI agent developmentDatabasesMySQLPHPJavaCryptoBlockchain

Job description

About the Position

We are seeking a Senior Full-stack Engineer with deep expertise in React, TypeScript, Node.js, and modern web architectures to join our team. This role is ideal for someone who has strong hands-on experience building production systems, including RAG pipelines and AI-assisted workflows, and demonstrates solid architectural thinking and pragmatic decision-making.

Responsibilities

  • Design and develop scalable backend services
  • Write clean, maintainable code
  • Collaborate with frontend team to ensure seamless integration
  • Implement AI-assisted workflows and pipelines

Requirements

  • 5+ years of full-stack development experience
  • Strong proficiency in React, TypeScript, Node.js, and JavaScript
  • Experience with OpenAI, LangChain, and AI agent development
  • Knowledge of MySQL, PHP, Java, Crypto, and Blockchain is a plus

We Offer

  • Opportunity to work with cutting-edge technologies
  • Flexible part-time availability
  • Collaborative and innovative work environment

About the Company

Join a team that values innovation, collaboration, and continuous learning. We are committed to building resilient solutions and contributing to new projects with a passion for software development.

© Lemon.io. This job description was sourced from the employer's public career page. TheJob is not the employer — we index the posting and route candidates to the source. All content rights and hiring decisions belong to the employer.

Have you ever heard aboutLemon.iobefore?If you have, here’s what it probably was:1. “Their website and brand are just so freaking cool. Check it out:lemon.io/2. “I love their CEO’s Twitter! They’re completely transparent and share everything, including actual numbers.”3. “I know several developers who work withLemon.io. All of them said thatLemon.io’s team is amazing and the clients they’ve been connected with are the best they’ve ever had.”4. “I read an article about them on Forbes.”5. “My friend works atLemon.ioand they’re really chill. Their team is fully remote and a lot of team members work from different cities and even countries, but they make sure they also get to have offline events & people come from all over the world.”6. “Their business model is cool. They connect devs with American startups for full-time projects. Their rates for developers are above the market average and they have a zero-fee policy for programmers.”7. They’ve paid out more than $8 000 000 to Ukrainian developers to date, brewed over 3000 bottles of craft beer to celebrate that occasion, and just gave it all out to the IT community for free.And if you haven’t heard of us yet... well, now you have :)What people may not know about us is that we’re also one of the few Ukrainian companies that are in the startup game for real. We play on the global market competing with giant international corporations.It’s not an easy game, but if you’re fast & eager, not a single Goliath stands a chance against you.We try our best to keep our team small and only hire the best talent we can’t live without.Thanks to that, we can make sure that:1. You will forget about bureaucracy and micromanagement2. You will have a direct impact on what’s going on. Not just on paper.3. You will have plenty of room to grow.Oh, and one more thing:As a part of our team, you will compete against the smartest professionals in your field on a global scale. And outsmarting them? Oh, it’s going to be a lot of fun.If that sounds like a story you want to be a part of, take a look at our current job openings and learn more about what we offer👇— complete transparency,— full remote (but we gladly meet each quarter),— competitive salary in USD,— bonuses for things we believe in: sport, self-development, travel,— monthly bonus for your home office,— flexible working hours (or even days!),— 28 working days for time-off,— 7 sick leave days,— pride to be a part of viral content generators :)Tools that we use to synchronize: Slack, G Suite products, Notion, JIRA.We will be happy to see you among the applicants if you feel like wearing aLemon.iohoodie. If there is no open vacancy, that is matching your profile, you can still get to our talents database by sending your CV to[email protected]

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