Technical Lead - Fullstack JS/TS

About lemlist

lemlist is a global B2B SaaS business with one mission: help any business grow.

We’re doing $54M+ ARR, while being:

• Bootstrapped & profitable, giving us freedom and independence
• 170 people, remote-friendly, agile

We run two product lines:

• Sales Engagement with lemlist & Claap ($50M ARR, growing +60% YoY)
• Social selling with Taplio & Tweet Hunter ($4.5M ARR)

About the role

We’re looking for a Tech Lead or a Senior Fullstack TypeScript Developer to join our team.

👉 The role starts as a Senior Developer, then evolves into a Tech Lead position after 3-6 months, once you’ve proven yourself in the squad.

You’ll design, build, and ship features across frontend and backend, improve performance, and progressively take leadership within your squad to set technical standards, mentor peers, and drive delivery.

What you’ll do

• Build new features end-to-end (frontend + backend) by working hand-in-hand with a strong Product team
• Improve the codebase (refactoring, bug fixes, optimization)
• Collaborate with the rest of the team to solve technical issues
• Mentor fellow developers, share knowledge, and raise the bar
• Step up as Tech Lead in your squad: drive quality, make technical choices, and align delivery

About you

Must have

• 8+ years in TypeScript / JavaScript (frontend + backend)
• Solid skills in Node.js, React, MongoDB
• Proven track record building & maintaining web apps
• Autonomous, fast learner, and collaborative
• Fluent in French & English, based in French timezone (+/- 2h)

Nice to have

• B2B SaaS startup experience
• Experience scaling a SaaS massively
• Familiarity with advanced performance optimization

Package & Perks

• 65 - 75K€ fixed + 18K€ bonus
• Profit sharing
• Alan Blue healthcare (100% covered for you and your family)
• Swile meal vouchers
• 100% Navigo card coverage
• MacBook Pro & remote setup budget
• Annual global team retreat