Senior Data Scientist

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; 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 Data Scientist to be a pivotal member of the data science team, taking ownership of executing an E2E challenging data science project in various areas of our product. Additionally, as a Senior Data Scientist, you will strengthen our methodologies, infrastructure, and algorithmic approaches.

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. Machine learning and AI are at the center of Lusha’s strategy and are imperative to Lusha’s continuous success.

Key Responsibilities

• Solve complex business problems using ML and data-driven techniques using a wide range of both classic and relevant SOTA algorithms and technologies.
• Work against business stakeholders to identify, well-define, and prioritize business problems to be solved through DS\ML pipelines.
• Dirty your hands with our endless stream of data, doing real-world data science impacting directly and significantly on our core product and user experience. 
• Define success criteria for each goal, and build and own the monitoring flow and maintenance plan for each solution. 
• Work closely with our data engineers to build the needed infrastructure and push solutions successfully to production.
• Continuously self-learn, grow professionally, and mentor younger team members.

Requirements

On a personal level:

• Professionalism: You demonstrate high standards in everything you do.
• Collaboration: You are a true team player who thrives in cross-functional teamwork, working seamlessly with other teams while leading efforts within the Lusha data science team in a collaborative manner.
• Independence & Ownership: You take initiative, pick up tasks quickly, and are capable of driving projects independently from ideation through to implementation. You plan, execute, and deliver End-to-End results without requiring constant supervision.
• Ambitious. You are eager to make an impact and lead by example. You want to grow, you thrive in a fast-moving, dynamic, growth environment, and can operate at the strategic level and the micro-detail to get things done
• Results-driven. You have a can-do approach, drive to exceed your goals 
• Data-oriented. You like analyzing and working with data
• Business-oriented You are interested in our business, products, and services and know how to translate business needs into ML solutions. 
• Organized. You can manage highly interdependent, multifaceted projects and keep various work streams on track - even those with many moving parts
• Story Teller. You have good communication skills and love and are confident in presenting your results and ideas clearly and concisely.

On a technical level:

• 5+ years of experience as an industry data scientist.
• MSc/PhD/equivalent in a relevant field, with relevant thesis. 
• Proficient in the basic data science Python toolbox (Pandas, Scipy, Numpy, Scikit-learn…).
• Proven record of successfully executing E2E data science projects. 
• Well-acquainted with both classical ML and DL models over a wide range of problems. 
• Practical experience of working with LLMs and/or NLP is mandatory.
• Good communication skills, i.e., Proven record in presenting your ideas to both colleagues and customers.
• Experiencing working with Big Data processing tools (Spark) - an advantage. 
• Familiarity with Databricks ecosystem - nice to have.

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. 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.