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Staff Engineer - Fullstack JS/TS
<h2>About lemlist</h2><p style="min-height:1.5em">lemlist is a global B2B SaaS business with one mission: <strong>help any business grow</strong>.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em">We’re doing <strong>60M+ ARR</strong>, while being:</p><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Bootstrapped & profitable</strong></p></li><li><p style="min-height:1.5em"><strong>170 people, remote-friendly, agile</strong></p></li><li><p style="min-height:1.5em"><strong>Majority-owned by our founder Guillaume Moubeche</strong>, giving us freedom and independence</p></li></ul><p style="min-height:1.5em"></p><p style="min-height:1.5em">We run two product lines:</p><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Sales Engagement</strong> with lemlist & Claap ($50M ARR, growing +60% YoY)</p></li><li><p style="min-height:1.5em"><strong>Social selling</strong> with Taplio & Tweet Hunter ($4.5M ARR)</p></li></ul><p style="min-height:1.5em">Our ambition: become a world-class giant in Sales Tech.</p><p style="min-height:1.5em">Our mantra: <strong>Keep growing.</strong></p><p style="min-height:1.5em"></p><h2>About the role</h2><p style="min-height:1.5em">We’re looking for a <strong>Staff Engineer</strong> to join our team.</p><p style="min-height:1.5em"></p><p style="min-height:1.5em">You’ll design, build, and ship features across frontend and backend, improve performance, and progressively take leadership on more transversal topics, mentor peers, and drive delivery.</p><p style="min-height:1.5em"></p><h2>What you’ll do</h2><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Build</strong> new features end-to-end (frontend + backend) by working hand-in-hand with a strong Product team</p></li><li><p style="min-height:1.5em"><strong>Improve</strong> the codebase (refactoring, bug fixes, optimization)</p></li><li><p style="min-height:1.5em"><strong>Collaborate</strong> with the rest of the team to solve technical issues</p></li><li><p style="min-height:1.5em"><strong>Mentor</strong> fellow developers, share knowledge, and raise the bar</p></li><li><p style="min-height:1.5em"><strong>Step up</strong> as Tech Lead on specific topics: drive quality, make technical choices, and align delivery</p></li><li><p style="min-height:1.5em"><strong>Solve difficult problems</strong> that <strong>impact 10,000s of customers every day</strong></p></li></ul><p style="min-height:1.5em"></p><h2>What success looks like</h2><p style="min-height:1.5em"><strong>Within 3 months</strong></p><ul style="min-height:1.5em"><li><p style="min-height:1.5em">You’re fully onboarded and comfortable in our stack</p></li><li><p style="min-height:1.5em">You’ve shipped meaningful features in production</p></li><li><p style="min-height:1.5em">You’ve contributed to improving our codebase</p><