Senior Backend Engineer

About the role

We are hiring a Senior Backend Engineer with deep Django expertise to help drive the next generation of RangeGPT—a platform that combines real-time infrastructure automation, scalable backend services, and AI-driven orchestration to empower cybersecurity teams.

Key Responsibilities

• Design, implement, and maintain backend services using Python and Django, powering RangeGPT’s API, orchestration, and data layers.
• Ledesign, implement, and maintain backend services using Python and Django, powering RangeGPT’s API, orchestration, and data layers.
• Lead PostgreSQL schema design and migrations, ensuring strong data modeling, performance, and long-term evolution.
• Develop and enhance RESTful APIs consumed by a React-based frontend and internal services.
• Create, manage, and manipulate complex JSON structures for API payloads, system configuration, and AI-driven workflows.
• Build backend logic that drives cyber range creation, cloud resource provisioning, and infrastructure automation.
• Contribute to infrastructure-as-code workflows and backend automation pipelines supporting dynamic deployment.
• Implement backend components that account for networking, service interconnects, and environment-aware logic.
• Collaborate closely with frontend engineers to ensure seamless integration between Django REST APIs and the React UI.
• Manage containerized development and runtime environments using Docker.
• Support CI/CD workflows, preferably using Azure DevOps.
• Participate in architecture discussions focused on scalability, modularity, reliability, and long-term maintainability.

Required Skills

• 7+ years of backend or full-stack engineering experience with strong backend focus.
• Expert proficiency in Python, with proven production experience using Django (DRF, ORM, migrations, middleware).
• Strong knowledge of PostgreSQL schema design, indexing, migrations, and query optimization.
• Extensive experience building and optimizing REST APIs and backend service layers.
• Strong understanding of JSON serialization, API-driven data modeling, and payload validation.
• Experience working with Docker and containerized development workflows.
• Familiarity with networking fundamentals including routing, service communication, and infrastructure components.
• Experience with infrastructure-as-code, CI/CD principles, and automated service provisioning.
• Solid software engineering fundamentals including testing, debugging, observability, and reliability engineering.

Desired Skills

• Experience building or integrating LLM-driven systems, agentic workflows, or retrieval-augmented generation pipelines.
• Familiarity with orchestration frameworks such as LangGraph or similar structured reasoning frameworks.
• Experience working with vector databases and semantic search systems.
• Background in cybersecurity, simulation tooling, or cloud automation platforms.
• Knowledge of FastAPI, Django Channels, or async Python programming.
• Experience with distributed systems, message brokers, or task queues such as Celery, Redis, or RabbitMQ.
• Familiarity with infrastructure orchestration tools such as Terraform or Ansible.
• Hands-on experience with Azure DevOps pipelines and deployment workflows.

Additional Details

Circadence Corporation is proud to be an equal opportunity employer. Featured benefits include Medical insurance, Vision insurance, Dental insurance, 401(k), Paid maternity leave, Paid paternity leave, Disability insurance.

About Circadence Corporation

Circadence is a premier provider of cyber range solutions, specializing in crafting, building, implementing, and managing tailored enterprise frameworks. Focused primarily on cybersecurity infrastructure, simulation, and education, Circadence excels across various tiers of complexity, seamlessly connecting academic, enterprise, and government use cases. Our unique approach to cybersecurity training leverages gamification and active-learning models, providing personalized, agile capabilities at scale. Gamified-learning capabilities: Enjoyable, approachable, scalable, and an enduring practice for the next generation of professionals. NIST/NICE Framework alignment: Users can be confident they are training to industry-leading dimensions of cyber excellence. On Demand: Accessible 24/7, and immersive, unlike other cyber training programs.