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Senior Fullstack TypeScript Developer (Product Engineer)

Nantes🌐 Remote💼 Full-time💰 $60,000–$60,000🗓 2026-07-09 → 2026-09-26

Core

Design and develop new features from scratch for B2B SaaS products (Sales Engagement and Personal Branding) on both frontend and backend.

Role type

Senior Fullstack TypeScript Developer (Product Engineer)

Builds

New features and improvements for lemlist, Claap, Taplio, and Tweet Hunter

Domain

B2B SaaS / Sales Tech / Personal Branding

Deliverable

production ML models | product features

Required skills

TypeScript, JavaScript, NodeJS, MongoDB, React, Frontend integration, Backend development, Mongo optimization, Performance tuning

Preferred skills

B2B SaaS startup experience, Self-taught background, Personal project development

Technologies

TypeScript, JavaScript, NodeJS, MongoDB, React, Gather, Slack, Notion

Responsibilities

Design and develop new features independently, Refactor code and fix bugs, Act as technical lead within squad, Support customer support team with technical issues, Train fellow developers

Seniority

Senior, hands-on IC with technical lead responsibilities

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