Senior Full-Stack Developer For Platform Group

Join Lusha, where culture isn't just a label—it's our DNA. We're dreamers, innovators, and learners, driven by simplicity, collaboration, and trust. At Lusha, every voice matters, and together, we shape a company we're proud of. Ready to be part of something truly unique? Join us and let's grow better together.

As a Lusha employee, you’ll empower B2B sales professionals globally to unlock lucrative revenue opportunities and drive sustainable growth. With over 1 million users and a database of 200+ million entries, your contributions will directly impact our customers, revolutionizing the way they approach sales and positioning them for long-term success in a competitive marketplace. With 40,000 new signups benefiting from our dynamic platform each month, your role is crucial in continuing to enhance and expand our offerings. You’ll help deliver exceptional value to our growing user community, ensuring they have the best tools at their disposal to succeed in a competitive marketplace.

We’re looking for a Senior Full Stack Developer (with a strong backend vibe) to build and scale high-load services, take real ownership over production, and help us level up how we ship, monitor, and operate critical systems

Where does this role fit in our vision?

Every role at our company is designed with a clear purpose—to integrate collective efforts into our shared success, functioning as pieces of a collective brain.You’ll be joining the team behind some of Lusha’s most performance-critical backend services—the ones that need to stay fast, reliable, and rock-solid under heavy load. Your work will help us scale smoothly as usage grows, and make sure our systems stay resilient and observable. This isn’t a “just write the code” type of role—we’re looking for someone who takes real ownership, cares about how their code behaves in prod, and isn’t afraid to get their hands dirty when things go sideways.

How you’ll shape the future of B2B sales

• Design and build complex flows in our event-driven architecture, from rough idea to running in production
• Write high-quality, maintainable code that stands up under heavy load
• Collaborate closely with teammates, product managers, and engineers from other teams to ship meaningful features
• Contribute to the stability and observability of our systems—we own what we build
• Take part in design reviews, architecture discussions, and constantly look for ways to improve how we work and build
• Stay hands-on with production: monitor, debug, and optimize the real-world behavior of your services
• Bring new ideas to the table and help us push the boundaries of performance, reliability, and developer experience

Here’s what we need from you

• 5+ years of hands-on development experience, building backend services that run in production
• Solid experience with event-driven microservices—you know how to design around queues, topics, and streaming patterns
• Strong understanding of databases, both relational and non-relational (you’ve modeled, queried, and optimized for performance)
• Comfortable owning features end-to-end—from design to production
• Experience working in cross-functional teams, collaborating with engineers, product, and stakeholders

Nice to have:

• Node.js and NestJS expertise
• Familiarity with React on the frontend
• Hands-on experience with Kafka, RabbitMQ, PostgreSQL, MongoDB
• Exposure to event sourcing, Kubernetes, and distributed system monitoring tools (e.g. Prometheus, Grafana, ELK)
• Background working on high-throughput or data-intensive systems

We’re looking for someone who:

• Thinks in systems, not just components
• Takes ownership and doesn’t wait to be told what needs fixing
• Communicates clearly, whether it’s writing a doc, leading a discussion, or challenging an idea
• Knows when to move fast, and when to slow down and think
• Cares about the team, not just the code
• Brings good vibes, strong opinions, and an open mind

How will you innovate? How will you learn? 

As a growth-stage company constantly evolving, you'll find opportunities to tackle unique projects and initiatives, all while being part of a thriving company that has evolved from its startup roots. You'll play a crucial role in our journey, with plenty of room to grow professionally. And as we move forward, you'll have a stake in our success, sharing in the rewards as we expand and innovate together, continuously learning along the way.

Why Lusha? It’s simple

Established in 2016 by Assaf Eisenstein and Yoni Tserruya, Lusha's dream is to revolutionize the B2B sales landscape. With significant investments totaling $240 million, we've transitioned from our bootstrap origins to unicorn status with a value estimation of $1.5 billion. This journey reflects our unwavering commitment to innovation and excellence as we continuously set new standards in the industry. Trusted by industry giants like Zendesk, Google, and Yotpo, Lusha is the go-to resource for sales intelligence, having started as a profitable bootstrap company and survived solely on profits for 4.5 years. Join us and experience a career journey as distinct and dynamic as you are.