Expert technique backend

Expert technique backend (Node.js / MongoDB) - Full remote 4 days ago Be among the first 25 applicants 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 $44M ARR in 7 years, without raising money. 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 Node.js 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, but with more complexity on the backend side Improve the code base with refactoring, bug fixes, and optimization Work on interesting topics such as solving complex backend performance issues, optimising massive db, or working on new AI‑powered features. 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 Contributed to raise the technical level internally What’s in it for you? 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 have a proven track record in building and maintaining web applications. You have a very 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 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 75K€ fixed salary + 15K€ 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 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 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 Interview with Corentin, our VP of Engineering Technical Interview with Mickael, our CTO, and Corentin, our VP of Engineering Interview with Charles, our CEO Seniority level Mid‑Senior level Employment type Full‑time Job function Engineering and Information Technology Industries Software Development #J-18808-Ljbffr