{"schemaVersion":"jobsearcher.job.v1","id":"57b43175b09735596e37b222","url":"https://jobsearcher.com/jobs/57b43175b09735596e37b222","canonicalUrl":"https://jobsearcher.com/jobs/57b43175b09735596e37b222","title":"Senior Fullstack TS Developer (backend-oriented)","description":"Senior Fullstack TypeScript Developer 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 $50M 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 optimizationWork on multiple projects simultaneouslyHelp the customer support team on technical issues, providing prompt and effective solutionsFacilitating 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 teamDeveloped a deep understanding of our B2B SaaS products and their technical requirementsContributed to the development of new features and improvements to our existing code baseWithin 12 months you will have:Played a key role in the development and delivery of multiple successful projectsMade significant contributions to the optimization and scalability of our software productsWhat'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 expertiseGreat ownership of your work. You will be part of a dynamic, innovative, and passionate team that respects autonomy and encourages individual input.No endless meetingsFull remote policyYou 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 XPYou have a proven track record in building and maintaining web applications.You have a robust understanding of NodeJS and MongoDBYou're able to work independently and take ownership of complex projectsYou're a fast learnerYou're comfortable with the agile methodologiesYou like to communicateYou like to work remotely, Gather, Slack and Notion are your best friendsYou are adaptable and like to discover new things and you can work on front-end integration, back-end development, mongo optimization, customer support, and moreYou speak French and English and you are in the French timezoneNice to have:You have a first experience in B2B SaaS startupYou 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 outsideAdditional Information:Salary between 55K€ and 70K€ fixed salary + 18K€ bonusWhere 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 profitsAlan Blue: Comprehensive 100% premium medical coverage for you and your familySwile Meal Tickets: Enjoy daily meal tickets to fuel productivityNavigo Card: Seamless commuting with a 100% covered Navigo cardFull-remote Work Setup: A well-funded home office budget to ensure seamless remote workGear: Get a Macbook Pro + tools and equipment you need for your jobTeam 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 TAMTechnical interview with Corentin, our VP of EngineeringTechnical Interview with Mickael, our CTOInterview with Charles, our CEO","company":"Lemlist","rawCompany":"lemlist","city":"New York","state":"NY","isRemote":false,"isActive":false,"createdAt":"2026-06-02T02:17:23.126Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1254.00","title":"Web Developers","slug":"web-developers"},{"code":"15-1251.00","title":"Computer Programmers","slug":"computer-programmers"}],"industries":[{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Senior Fullstack TS Developer (backend-oriented)","description":"Senior Fullstack TypeScript Developer 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 $50M 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 optimizationWork on multiple projects simultaneouslyHelp the customer support team on technical issues, providing prompt and effective solutionsFacilitating 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 teamDeveloped a deep understanding of our B2B SaaS products and their technical requirementsContributed to the development of new features and improvements to our existing code baseWithin 12 months you will have:Played a key role in the development and delivery of multiple successful projectsMade significant contributions to the optimization and scalability of our software productsWhat'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 expertiseGreat ownership of your work. You will be part of a dynamic, innovative, and passionate team that respects autonomy and encourages individual input.No endless meetingsFull remote policyYou 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 XPYou have a proven track record in building and maintaining web applications.You have a robust understanding of NodeJS and MongoDBYou're able to work independently and take ownership of complex projectsYou're a fast learnerYou're comfortable with the agile methodologiesYou like to communicateYou like to work remotely, Gather, Slack and Notion are your best friendsYou are adaptable and like to discover new things and you can work on front-end integration, back-end development, mongo optimization, customer support, and moreYou speak French and English and you are in the French timezoneNice to have:You have a first experience in B2B SaaS startupYou 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 outsideAdditional Information:Salary between 55K€ and 70K€ fixed salary + 18K€ bonusWhere 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 profitsAlan Blue: Comprehensive 100% premium medical coverage for you and your familySwile Meal Tickets: Enjoy daily meal tickets to fuel productivityNavigo Card: Seamless commuting with a 100% covered Navigo cardFull-remote Work Setup: A well-funded home office budget to ensure seamless remote workGear: Get a Macbook Pro + tools and equipment you need for your jobTeam 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 TAMTechnical interview with Corentin, our VP of EngineeringTechnical Interview with Mickael, our CTOInterview with Charles, our CEO","datePosted":"2026-06-02T02:17:23.126Z","dateModified":"2026-06-02T02:17:23.126Z","hiringOrganization":{"@type":"Organization","name":"Lemlist","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"New York","addressRegion":"NY","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"57b43175b09735596e37b222"},"url":"https://jobsearcher.com/jobs/57b43175b09735596e37b222"}}