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Senior Fullstack TS Developer (backend-oriented)

Lemlist · Marseille

On-siteSeniorEUR 55k–70k / yrPosted 15 Sept 2026

What this role requires

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

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Job description

About us 👇🏼

lemlist is the sales engagement platform that gives sales teams the unfair advantage they deserve. Bootstrapped since day one, we’ve grown from 0 to $54M ARR in 8 years, without raising a single dollar. Today, we’re a profitable B2B SaaS company valued at $150M+, trusted by 40,000+ sales teams worldwide to book more meetings and close more deals.

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. You will be using Node.js a lot.

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.

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

Read the full description (50 more sections)

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 5 years of XP

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

You have a robust understanding of NodeJS and MongoDB

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, customer support, 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 55K€ and 70K€ fixed salary + 18K€ bonus

Where you live, and work is totally up to you – we just want you to be in a timezone close to ours (France +/- 3 hours)

Profit sharing: When lempire 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 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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