Senior Full-Stack Developer (MERN) (70% FE / 30% BE)

Confidential

Not specified permanent

Posted: January 30, 2026

Required Skills

Job Description

Hey! I’m Sasha, the Tech Lead at Lemon.io, where cool engineers and awesome startups find their perfect match. Our dev team, a bunch of talented folks (1 Full-stack dev (mostly FE), 2 BE devs, 2 QA rockstars, and a UI/UX wizard), is on the lookout for a new buddy to join us. We’re cooking up some magic for our in-house CRM, and we need you to make it happen!

Must have:

4+ years of experience with React and Next.js,

3+ years of experience with Node.js,

3+ years of experience with TypeScript,

experience with MongoDB

experience with MUI or similar component libraries,

experience with React Query for API integration,

strong grasp of responsive design and cross-browser compatibility,

flexibility, responsibility, and problem-solving skills,

a strong sense of ownership, with the ability to proactively identify and solve problems beyond assigned tasks

Will be a huge plus:

experience with Inversify or Nest.js,

experience with Angular,

experience with GraphQL.

practical experience using LLM-based tools in daily development workflow,

background in building or maintaining design systems,

knowledge of front-end performance optimization techniques.

Tasks and responsibilities:

develop company’s products — at first, an in-house CRM,

collaborate with other developers and teams to create our main product — the marketplace of vetted developers,

actively participate in task discussions by proposing solutions, alternatives, and technical improvements,

contribute to R&D efforts by exploring and suggesting tools, libraries, or approaches that improve development efficiency and product quality,

code review of other team members.

What we offer:

Startup culture with open communication. Our current eNPS score is 82,

Competitive salary in USD,

Full remote work with flexible working hours,

28 working days of vacation a year,

7 days of sick leave,

Annual reimbursements for things that matter to us: health, self-development, traveling, home office upgrade, mental wellness etc.

Help with maintaining your Ukrainian PE.

I can’t wait to hear your story! Send us a CV and a cover letter through our application form. Looking forward to having you on board! 🚀

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