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lemlist

Multichannel sales outreach and lead enrichment

Senior Fullstack TypeScript Developer - Product Engineer

Full-Stack EngineeringConfirmed live in the last 24 hours
Full-timeParis, France

About the Job

Requirements

  • At least 7 years of experience with TypeScript and JavaScript.
  • A proven track record building and maintaining web applications.
  • A robust understanding of Node.js and MongoDB; React is ideally desired.
  • Ability to work independently and take ownership of complex projects.
  • Comfort with agile methodologies.
  • Ability to work remotely using Gather, Slack, and Notion.
  • Ability to work on front-end integration, back-end development, MongoDB optimization, and performance issues.
  • Fluency in French and English and availability in the French time zone.

Responsibilities

  • Design and develop new frontend and backend features from scratch to improve user experience and product functionality.
  • Serve as the technical lead within the squad, driving excellence and setting standards.
  • Improve the codebase through refactoring, bug fixes, and optimization.
  • Work on multiple projects simultaneously.
  • Support the customer support team with technical issues and provide effective solutions.
  • Train fellow developers and facilitate knowledge sharing to build team capability.
  • Contribute to the development of new features and improvements to the codebase.
  • Contribute to the delivery of projects and to the optimization and scalability of software products.

Desired Qualifications

  • Experience in a B2B SaaS startup.
  • Personal software development projects or self-taught programming experience.

About the Company

lemlist

Multichannel sales outreach and lead enrichment

Lemlist is a sales engagement platform that automates multi-channel outreach, including email, LinkedIn, and phone calls, to help businesses reach and convert prospects. It works by giving users access to a database of over 450 million contacts, with tools to find, verify, and enrich leads and to filter them by criteria such as technology, company size, industry, or location. Users run outreach sequences across channels, while the platform tracks performance and optimizes campaigns. AI-powered features assist with segmenting leads, cleaning data, and personalizing messages to maintain a human touch in automated outreach. Lemlist serves more than 37,000 businesses in over 100 countries and operates on a subscription model with different plans and feature sets. Its goal is to streamline lead generation and conversion, helping teams manage prospects from discovery through to acquisition.

Company size
201-500
Company stage
Growth Equity (Venture Capital)
Total funding
$30M
Headquarters
Paris, France
Founded
2018

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