Senior Back-End Developer

About UniCloud
UniCloud is Unitronics’ cloud-native Industrial IoT platform that powers real-time device connectivity, data analytics, and remote operations for customers worldwide. We process high-volume telemetry at scale and turn it into actionable insights for manufacturers and machine builders. If you love building reliable, high-performance services that run at scale in AWS, this is for you.
What you’ll do
Build features end-to-end with Django and Django REST Framework: design APIs, data models, and services that are secure, scalable, and maintainable.
Write clean, well-tested Python, following best practices for readability, reliability, and performance.
Optimize data access via Django ORM and (when needed) raw SQL; tune queries and schema for performance.
Own cloud delivery on AWS (EC2, S3, RDS, ElastiCache, Lambda, Kinesis, SQS, SNS, CloudWatch, and more): deploy, manage, and continuously improve our cloud footprint.
Harden reliability & security while keeping cost-effectiveness in mind.
Troubleshoot production: diagnose complex issues across services, infrastructure, and data layers; implement permanent fixes.
Monitor & improve performance: establish metrics, dashboards, and alerts; proactively identify bottlenecks and optimize systems.
Collaborate in a microservices & Kubernetes environment: contribute to architecture discussions, code reviews, and technical roadmaps.
Mentor & elevate standards: share knowledge, champion best practices, and help the team level up.
דרישות התפקיד
Must-have skills & experience
3+ years building highly scalable SaaS / complex applications.
5+ years in back-end development with Python (Django) (Java experience is an advantage).
3+ years of hands-on AWS experience (EC2, S3, RDS, ElastiCache, Lambda, Kinesis, SQS/SNS, CloudWatch, etc.).
Experience with microservice architecture managed by Kubernetes.
Strong with PostgreSQL and Redis; ClickHouse is a significant plus.
Comfortable working with AI capabilities (integrations, services, workflows).
Proven track record of deep-diving into complex areas, analyzing systems, proposing solutions, and shipping changes.
Bachelor’s in CS/Engineering (or equivalent); alumni of elite tech units with relevant experience welcome.
Passion for clean architecture, high-quality code, and automated testing.
Proactive, ownership-driven, and goal-oriented; excellent communication skills.
Autodidact who loves learning and sharing with the team.
Nice to have
Experience with EKS, Docker, Jenkins, and modern observability stacks (e.g., CloudWatch, DataDog).
Familiarity with streaming/analytics stacks (e.g., Kinesis, Flink) and cost optimization practices in AWS.
Exposure to industrial/edge/IIoT domains is a bonus.
How we work
Pragmatic engineering culture: ship value safely, measure impact, iterate.
High responsibility, strong collaboration, and room to lead initiatives.
Real scale, real customers, real-world impac