L

lemlist Tech Stack

AI-powered sales engagement platform for B2B outbound campaigns

Software Development New York, NY 51–200 employees Founded 2018 Privately Held

lemlist operates a sales engagement platform combining prospecting, data enrichment, AI personalization, and multichannel outreach, integrated with Salesforce and HubSpot. The stack is lightweight—Node.js, React, MongoDB—yet the hiring mix skews heavily senior (13 of 22 named seniority levels), with active backend performance and database optimization work, suggesting the company is scaling into higher complexity rather than building new surface area. Current focus spans conversion rate tuning, closing velocity, and structuring a sales force alongside product development.

Tech Stack 19 technologies

Core StackNode.js TypeScript JavaScript MongoDB Slack Figma React Stripe Notion Storyblok Google Sheets Excel SQL Pennylane YouTube TikTok LinkedIn Holistics

AdoptingReact

What lemlist Is Building

◆Challenges

Solving backend performance issues
Optimizing scalability of software products
Optimizing massive database
Conversion rate improvements
Acquiring high-quality customers
Structuring a sales force
Improving web experience
Data-driven decision making
Process gaps
Compliance across multiple countries

▲Active Projects

Ongoing experiments for conversion rate improvements
Building an outbound pipeline
New ai-powered features
Closing higher velocity deals
Backend performance optimization
Moonshot project
Build partnerships with startup ecosystems
Full outbound sales cycle
Us sales playbook
End-to-end feature development

Hiring Activity

Steady30 roles · 8 in 30d

Department

Engineering

9

Sales

4

Marketing

3

Design

2

Ops

2

Support

2

Data

1

Finance

1

Seniority

Senior

13

Mid

4

Junior

3

Manager

3

Director

1

Lead

1

Staff

1

Notable leadership hires: Video Content Lead, Growth Lead

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About lemlist

lemlist is a sales engagement platform for B2B companies running outbound prospecting and email campaigns at scale. The product unifies lead research, data enrichment, AI-driven personalization, and delivery across email, LinkedIn, and other channels, with native integrations into Salesforce and HubSpot CRM workflows. Founded in 2018 and headquartered in New York, the company operates a sales-led go-to-market model, hiring across engineering, sales, and marketing. Active development spans backend performance optimization, new AI features, conversion rate improvements, and international sales playbooks.

HeadquartersNew York, NY

Company Size51–200 employees

Founded2018

Hiring MarketsFrance, Bulgaria, Colombia, United States