Senior Python backend developer
CytoReason
Software Engineering
Tel Aviv-Yafo, Israel
Posted on Jan 18, 2026
Senior Python backend developer
- R&D
- Tel Aviv, Israel
- Senior
- Full-time
Description
We are seeking an experienced Senior Python Engineer to join our engineering team and drive the development of robust, scalable, and high-performance backend solutions. In this role, you will design and implement core services, optimize data workflows, and contribute to architecture decisions that support mission-critical applications. The ideal candidate brings deep expertise in Python, hands-on experience with distributed systems or data-intensive environments, and a passion for building reliable, production-grade software.
Responsibilities
- Enabling the adoption of next-generation orchestration tool – Nextflow
- Build software components to automate and reduce human work to annotate and design a model
- Design and implement backend APIs using Nest.js,FastAPI integrating with data layers and external systems.
- Contribute to and review frontend features in React, ensuring seamless integration with backend services.
- Help design and shape the product, working closely with product managers, bioinformaticians, and other stakeholders to align technical decisions with product goals.
- Mentor and support other developers through code reviews, internal discussions, clean code and technical guidance.
- Collaborate cross-functionally with product, data, and infrastructure teams to define requirements and deliver solutions.
- Write and maintain technical documentation and high-level designs
The Tech You’ll Work With:
- Frontend: React, TypeScript, Tailwind CSS
- Data & Storage: LakeFS, PostgreSQL, BigQuery
- Cloud: Google Cloud Platform (GCP), AWS
- Additional tools: Python, R (familiarity a plus, not required)
- CI/CD & DevOps: Docker, Kubernetes
Requirements
- 7+ years of experience as a full-stack or backend-focused developer with expereise in data releate product.
- Proficiency in NodePython .js / Nest.js and experience with scalable API design.
- Strong understanding of distributed systems, performance optimization, and cloud architectures.
- Experience leading projects or mentoring engineers — you enjoy helping others grow.
- Hands-on experience with modern frontend frameworks, preferably Reactin Python.
- Strong communication and planning skills, with the ability to provide technical input during project scoping.
- Track record of delivering efficiently in agile teams with shifting priorities.
- Proactive mindset — someone who can take ownership, identify problems, and propose solutions.
Advantages
- Experience with Python or R for data-related workflows.
- Background in data-intensive systems or bioinformatics.
- Hands-on experience with modern frontend frameworks, preferably React.
- Familiarity with multi-cloud environments (GCP + AWS)
