About Us

Definity is on a mission to reinvent how enterprise data teams build and maintain data pipelines solving a critical problem in a massive market. We empower data teams to focus on business logic and scale with confidence, while our AI-driven platform takes care of pipeline health, optimization, and quality. Backed by top-tier VCs, we are expanding our core team and looking for exceptional, highly talented individuals who thrive in a fast-paced, empowering, and supportive environment.

The Opportunity

As a Staff Backend Engineer, you will lead and shape our high-scale platform, processing millions of analytical data operations daily and enabling real-time, data-driven decisions. You’ll join a small, high-impact team and play a key role in shaping both our technology and our culture of ownership, learning, and experimentation.

What You’ll Do

• Design, develop, and optimize platform services, protocols, and data models at scale.
• Lead key architectural and technological decisions
• Improve platform efficiency, scalability, and stability
• Define and implement algorithmic ML and GenAI solutions
• Collaborate through code reviews, brainstorming, and feedback
• Work directly with customers and advocate for their needs
• Work in a hybrid model, based in Tel Aviv
  

What You’ll Bring

• 7+ years of experience building production backend services
• Strong experience with monitoring, performance optimization and scaling
• Proven production expertise with Python
• Strong RDBMS knowledge and high proficiency in SQL
• Experience supporting live SaaS systems in the cloud
• High engineering standards and a fast delivery mindset
• Bachelor’s degree in Computer Science, Software Engineering, or equivalent experience

Who You Are

• Ownership-driven: You take full accountability and pride in what you build.
• Impact-focused: You prioritize outcomes and consistently move the needle.
• Entrepreneurial: Proactive, resourceful, and comfortable taking calculated risks.
• Customer-first: Deeply empathetic to customer needs and committed to solving real problems.