Senior Full Stack Developer

Who we are

Founded in 2016, Lusha grew from a bootstrapped startup to a $1.5B unicorn, backed by $245M in investments and trusted by sales teams at Google, Zendesk, and Yotpo.

Lusha is changing the B2B sales experience with a new approach called Sales Streaming. It allows salespeople to search for any lead in the world, then our AI finds them better ones, keeps them streaming and does outreach for them. This means they can now spend most of their time actually selling.

With 1.5M+ users, 200M+ contacts, and 40K new signups every month, we’re the engine behind modern GTM teams. And we’re just getting started.

Where does this role fit in our vision?

We’re looking for a Senior Full Stack Developer (with a strong backend focus) to join one of our customer-facing squads. You’ll play a key role in shaping products used by hundreds of thousands of users globally, helping us scale performance and usability while ensuring a seamless customer experience. By building robust backend systems and sleek front-end features, you’ll directly impact Lusha’s ability to deliver fast, reliable, and AI-powered sales tools to B2B professionals everywhere.

What will you be responsible for?

Build and maintain scalable full-stack applications using Node.js, NestJS, and React.js
Design and implement APIs, microservices, and backend services
Write unit, integration, and end-to-end tests for high code quality
Work with SQL (MySQL, PostgreSQL) and NoSQL (MongoDB) databases
Optimize application performance and fix bottlenecks
Deploy code via CI/CD pipelines in a microservices architecture
Collaborate with product, design, and engineering teams in an Agile environment

Requirements:

5+ years as a backend-focused developer and with hands-on expertise in Node.js
Strong proficiency in writing tests (unit, integration, end-to-end)
Experience working with both SQL (MySQL, Postgres) and NoSQL (MongoDB) databases
Proven track record building high-scale, user-facing web applications
Familiarity with CI/CD processes and microservices environments
A collaborative mindset, strong communication skills, and a data-driven approach to decision-making

Nice to have

Experience with message brokers like RabbitMQ or Kafka
Familiarity with containerization and orchestration tools (Docker, Kubernetes)
Frontend experience with React.js, Vue.js, or Angular
Exposure to event sourcing architectures

We’re dreamers, innovators, and learners, driven by simplicity, collaboration, and trust.

At Lusha, your work matters. Your voice is heard. And your growth is part of our growth.

Ready to join us? Let’s build the future of sales, together.