Technical Lead - Fullstack JS/TS
- Role
- Fullstack
- Experience
- Lead
- Employment
- Full-time
- Company size
- Mid-size
Open to FR only · UTC-1…UTC+3. Set where you work from to check your eligibility.
No BS summary
Lead-level fullstack TypeScript/JavaScript developer with 8+ years across frontend and backend. Must know Node.js, React, MongoDB, be fluent in French and English, and be based in France/French timezone ±2h.
Core skills
Required skills
Required languages
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)
Our ambition: become a world-class giant in Sales Tech.
Our mantra: Keep growing.
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
What success looks like
Within 3 months
- You’re fully onboarded and comfortable in our stack
- You’ve shipped meaningful features in production
- You’ve contributed to improving our codebase
Within 6 months
- You’ve led delivery of multiple successful projects
- You’ve had direct impact on scalability & performance
- You’ve grown into your Tech Lead role and mentor others
What’s in it for you
- Join a bootstrapped, profitable, fast-growing SaaS company
- Build products used by thousands of businesses worldwide
- See your impact quickly with a very short feedback loop
- Work with senior engineers who love to learn and share knowledge
- Remote-first culture (office in Paris if you prefer 🇫🇷)
- No endless meetings, high autonomy, big impact
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
- Always hungry to learn more, particularly around JS/TS
- Autonomous, fast learner, and collaborative
- Fluent in French & English, based in French timezone (+/- 2h)
Nice to have
- B2B SaaS startup experience
- You worked on a SaaS that scaled massively
- You are familiar with advanced performance optimization
- Self-taught hacker or side-project builder
- Passionate about experimenting & creating beyond work
Package
- 65 - 75K€ fixed + 18K€ bonus
- Profit sharing: when lemlist wins, you win too
- Full perks: Alan Blue (healthcare) 100% taken care of for you and your family, Swile meal vouchers, 100% of your Navigo card, MacBook Pro & remote setup budget
- Annual global team retreat in amazing locations 🌍
Recruitment process
- Interview with Lucas (TAM)
- Technical interview with Corentin (VP of Engineering)
- Technical interview with Mickael (CTO)
- Final chat with Charles (CEO)
What you'll do
- Design, build, and ship features across frontend and backend
- Improve performance
- Progressively take leadership within the squad to set technical standards, mentor peers, and drive delivery
- Build new features end-to-end across frontend and backend with a Product team
- Improve the codebase through refactoring, bug fixes, and optimization
- Collaborate with the team to solve technical issues
- Mentor fellow developers, share knowledge, and raise the bar
- Step up as Tech Lead in the squad: drive quality, make technical choices, and align delivery
What they require
- 8+ years in TypeScript / JavaScript across frontend and backend
- Solid skills in Node.js, React, MongoDB
- Proven track record building and maintaining web apps
- Always hungry to learn more, particularly around JS/TS
- Autonomous, fast learner, and collaborative
- Fluent in French and English
- Based in French timezone (+/- 2h)
- Preferred: B2B SaaS startup experience
- Preferred: Worked on a SaaS that scaled massively
- Preferred: Familiar with advanced performance optimization
- Preferred: Self-taught hacker or side-project builder
- Preferred: Passionate about experimenting and creating beyond work
Benefits
- Join a bootstrapped, profitable, fast-growing SaaS company
- Build products used by thousands of businesses worldwide
- See your impact quickly with a very short feedback loop
- Work with senior engineers who love to learn and share knowledge
- Remote-first culture
- Office in Paris if preferred
- No endless meetings
- High autonomy
- Big impact
- 18K€ bonus
- Profit sharing
- Alan Blue healthcare 100% covered for you and your family
- Swile meal vouchers
- 100% of Navigo card covered
- MacBook Pro
- Remote setup budget
- Annual global team retreat in amazing locations
lemlist is a sales engagement platform for sales teams. It is a profitable bootstrapped B2B SaaS company, valued at $150M+, trusted by 40,000+ sales teams worldwide.