Senior Backend Developer

Here at Lusha, we power sales with data. Over 1.5M users and teams at Google, Zendesk, and Yotpo use our platform to find verified contacts, spot real-time buying signals, and automate workflows with 200M+ records.

As a Senior Backend Engineer, you’ll build the systems that keep Lusha fast, scalable, and reliable — powering data for millions of users across the world. You’ll own end-to-end solutions within a cross-functional squad, designing and delivering backend services that touch every part of our customer experience.

If you love solving complex challenges at scale, writing clean, testable code, and shaping the architecture behind high-impact products — this one’s for you.

What You’ll Actually Do

• Work in an agile squad alongside product managers, designers, analysts, and world-class engineers.
• Design, develop, and optimize backend services using Node.js (Nest) within a modern microservices environment.
• Collaborate on architecture decisions, analyze data impact, and own your code from design to deployment.
• Ensure reliability through testing (unit, component, end-to-end) and continuous monitoring in production.
• Identify performance bottlenecks and drive improvements that scale to hundreds of thousands of users.
• Deploy via CI/CD, experiment with new technologies, and help set best practices for clean, efficient code.
  
  

• 5+ years of experience as a backend engineer.
• Deep expertise with Node.js and modern server-side frameworks.
• Proven experience with SQL and NoSQL databases (MySQL, Postgres, MongoDB).
• Hands-on experience writing and maintaining automated tests.
• Strong communication skills and a collaborative, product-oriented mindset.
  
  

• Experience with large-scale, data-intensive systems.
• Familiarity with Kafka / RabbitMQ, Docker / Kubernetes, or event-driven architectures.
• Some frontend experience (React, Vue, Angular) — always a plus.