Hybrid Staff Software Engineer

at Hack The Box

• Job title: Staff Software Engineer
• Job type: Full Time
• Experience level: Lead
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Cloud, Distributed Systems, ElasticSearch, Elixir, Kafka, Kubernetes, Postgres, Python, Terraform
• Location requirements: Hybrid, Palaio Faliro, Greece

About the role

• Staff Software Engineer developing backend solutions within the AI team at Hack The Box. Contributions impact the development of innovative AI-driven cybersecurity products.

Responsibilities

• Design, develop, maintain, and evolve backend services for Range, including ownership of existing systems and delivery of new features
• Lead greenfield projects, designing and building backend systems from scratch with scalability and reliability in mind
• Own backend architecture and technical design, making informed decisions to support long-term growth and stability
• Develop and maintain REST APIs using modern frameworks, and manage data storage and retrieval across multiple systems
• Collaborate closely with Product Managers to translate product requirements into well-designed technical solutions, and act as the go-to person for platform integrations
• Implement and maintain CI/CD pipelines, participate in system monitoring, performance tuning, production support, and contribute to internal documentation and knowledge sharing

Requirements

• 5+ years of professional software engineering experience, with a strong focus on backend systems and production ownership
• Strong proficiency in Python and/or Elixir, with hands-on experience building services using FastAPI and/or Phoenix
• Proven experience designing and operating backend systems, including REST APIs, PostgreSQL, Elasticsearch, and event-driven architectures (Kafka or similar)
• Deep understanding of backend architecture, scalability, and distributed systems, with the ability to design systems end-to-end
• Production experience with CI/CD and cloud-native infrastructure, including Kubernetes and Terraform
• Bonus points:
• Experience with ClickHouse
• Familiarity with MCP
• Exposure to AI and related technologies
• Experience in high-growth or startup environments

Benefits

• Private health care
• Paid paternity leave
• 25 annual leave days
• Free lunch & snacks at the office
• Access to on-site gym and a variety of group activities including Cross Training, Pilates, Boxing and Climbing
• 120€ Ticket Restaurant by Edenred
• Dedicated budget for training and professional development, participation in conferences
• Full access to the Hack The Box lab offerings; so you can learn how to hack 😉
• State-of-the-art equipment (mac, iPhone, and mobile plan)
• Flexible WFH (Hybrid Model) - Fully Remote is also an option if you're not an Attica resident
• Annual childcare allowance to support daycare expenses for parents