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Senior Fullstack TypeScript Developer (Product Engineer)

Lemlist · Nantes

On-siteSeniorEUR 60k–70k / yrPosted 15 Sept 2026

What this role requires

4 requirements, read out of the advert rather than guessed from the job title:

Also mentioned, not required: React, English, French. Worth having, but their absence is not what gets a CV filtered out.

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Job description

🚀 About lemlist

lemlist is a global B2B SaaS business with the mission to help any business grow.

We are doing over $54M in ARR while being:

Bootstrapped

Profitable

A small, agile team of 170 highly talented people, remote-friendly

Read the full description (62 more sections)

Majority owned by an entrepreneur, Guillaume Moubeche, Founder & Chairman — which gives us maximum freedom

We operate 2 business lines:

Sales Engagement with our flagship products lemlist & Claap, generating $49.5M ARR and growing over 50% year over year

Personal Branding with Taplio & Tweet Hunter, generating $4.5M ARR

lemlist is a highly ambitious company that aims to become a world-class giant in the Sales Tech space.

Our mantra: Keep growing – and we live by it every day.

Job Description

We're looking for a Senior Fullstack TypeScript Developer to join our team. You'll be responsible for designing and developing new features for our SaaS products. We need someone who is passionate, autonomous, and loves technical challenges.

Your main missions will be:

Design and develop new features from scratch, both on the frontend and backend, Independently developing new features that enhance user experience and increase product functionality.

Stepping into the role of technical lead within your squad, driving excellence and setting standards.

Improve the code base with refactoring, bug fixes, and optimization

Work on multiple projects simultaneously

Help the customer support team on technical issues, providing prompt and effective solutions

Facilitating knowledge sharing and capacity building by training fellow developers, enhancing overall team competency and productivity.

Key results

Within 3 months you will have

Successfully onboarded and integrated into the team

Developed a deep understanding of our B2B SaaS products and their technical requirements

Contributed to the development of new features and improvements to our existing code base

Within 12 months you will have

Played a key role in the development and delivery of multiple successful projects

Made significant contributions to the optimization and scalability of our software products

What’s in it for you?

Work in a profitable, bootstrapped, and high-growth company that doesn’t rely on external funding to live.

You will have the opportunity to make a lasting impact on a suite of products that are changing the game in multiple industries.

Work with passionate senior engineers who share their knowledge and expertise

Great ownership of your work. You will be part of a dynamic, innovative, and passionate team that respects autonomy and encourages individual input.

No endless meetings

Full remote policy

You will grow professionally and personally, enhancing your technical skills and expanding your global network.

Preferred Experience

Must have

You’re an expert in TypeScript / JavaScript with at least 7 years of XP

You have a proven track record in building and maintaining web applications.

You have a robust understanding of NodeJS and MongoDB , and ideally React

You’re able to work independently and take ownership of complex projects

You’re a fast learner

You’re comfortable with the agile methodologies

You like to communicate

You like to work remotely, Gather, Slack and Notion are your best friends

You are adaptable and like to discover new things and you can work on front-end integration, back-end development, mongo optimization, performance issues and more

You speak French and English and you are in the French timezone

Nice to have

You have a first experience in B2B SaaS startup

You are self-taught, you have been developing personal projects since you were a child or in the evenings and weekends. This is not mandatory but a big plus for us, we are all passionate about programming and like to create things, both at work and outside

Additional Information

Salary between 60K€ and 70K€ fixed salary + 18K€ bonus

Where you live, and work is totally up to you – we do have an office in Paris if you enjoy life at the office 🇫🇷

Profit sharing: When lemlist wins, all team members share the profits

Alan Blue: Comprehensive 100% premium medical coverage for you and your family

Swile Meal Tickets: Enjoy daily meal tickets to fuel productivity

Navigo Card: Seamless commuting with a 100% covered Navigo card

Full-remote Work Setup: A well-funded home office budget to ensure seamless remote work

Gear: Get a 48GB Macbook Pro + tools and equipment you need for your job

Team building: We all meet once per year at really cool places around the world (you can check our video here ;)

Recruitment process

Interview with Lucas our TAM

Technical interview with Corentin, our VP of Engineering

Technical Interview with Mickael, our CTO

Interview with Charles, our CEO

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