Senior Frontend Developer at Joom Marketplace · Web3Vacancy
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Senior Frontend Developer

Remote
$40,000–$65,000
◆ 8/10 techweb3Frontend Developerremote
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About this role

Join JoomPro as a Senior Frontend Developer and be part of the first end-to-end cross-border B2B marketplace. Work with a tech-centric team and contribute to innovative projects in a dynamic environment.

Description

JoomPro is the first and only end-to-end cross-border B2B marketplace. It serves small, medium, and large businesses, handling orders of any size from start to finish. Today, JoomPro operates in Brazil and Mexico, with plans to expand into other markets. JoomPro is one of the key businesses of Joom, an international tech-centric group of e-commerce companies founded in 2016 in Latvia. Joom Group also includes other businesses: Joom, a global cross-border marketplace; JoomPulse, an AI analytics tool for Mercado Livre sellers; and Onfy, a pharmaceutical marketplace in Germany. Joom Group has offices in Latvia, China, Portugal, Germany, and Brazil, with its headquarters in Lisbon, Portugal. We work as one international team, sharing knowledge and collaborating across countries, businesses and products.

Responsibilities
  • New feature development
  • Current functionality support
  • Refactoring
Requirements
  • Experience in developing large applications using React.js
  • Good knowledge of native JavaScript and OOP experience
  • Browser understanding: how event models work, browser rendering, animation features
  • Knowledge of basic programming patterns, basic algorithms and the ability to assess their complexity
  • Knowledge of network protocols

Preferred

  • Experience with Effector, Redux, react-query

  • Experience with Next.js, Express

  • Experience with TypeScript

  • Experience with AI tools: Cursor, Claude Code, Codex

  • Nginx configuration and Docker experience

  • Multilingual application development experience

Conditions & Benefits
  • Compensation package: base salary and performance-based bonuses
  • Office-first: flexible hours with a possibility to work remotely 52 days per year, and 22 days of paid annual leave
  • Care & Wellbeing: health insurance (including dental care) for employees and their children, daily meal allowance, and 100% paid sick leave
  • Relocation Support: full assistance for a smooth relocation for the employees and their family
  • AI-first approach: licenses and access to a wide range of AI tools
  • Team & Growth: collaboration with colleagues across Portugal, Brazil, Latvia and China, with opportunities for promotions, professional trainings, and English courses
  • Community & Engagement: annual team building activities, knowledge-sharing workshops, and a strong sense of team work
Job Details
Salary$40,000–$65,000
LocationRemote
AI Score★★★★★★★★☆☆ 8/10
PostedSep 16, 2026 (4d ago)
Tags & Skills
techweb3Frontend Developerremote
Tech Stack
React.jsTypeScriptCSS-modulesPostCSSSassEffectorNext.jsEslintStylelintExpressWebpackCursorClaude
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