We are looking for a Python Developer (Mid to Senior) to join our engineering team and contribute to the design, development, and evolution of our cybersecurity platform and its supporting services. You will build robust backend services, data processing pipelines, and integrations with security tooling (vulnerability scanners, threat intelligence feeds, SIEM platforms), working closely with security researchers, product owners, and fellow engineers.
This role can be based in Athens on a hybrid model or fully remote from Switzerland, with occasional travel for team meetings and project events.
What You'll Do- Design, develop, test, and maintain backend services and APIs in Python
- Build and optimize data ingestion, normalization, and correlation pipelines for security data (e.g., CVE/CPE feeds, scan results, telemetry)
- Integrate third-party security tools and external data sources into the platform via REST APIs, message queues, and connectors
- Contribute to the architecture and technical design of new features, from proof-of-concept to production
- Write clean, well-documented, and well-tested code, and participate in code reviews
- Work with relational databases (PostgreSQL) — schema design, query optimization, and data modeling
- Containerize and deploy services using Docker; contribute to CI/CD pipelines
- Collaborate with cross-functional teams (security analysts, frontend engineers, DevOps, research) in an agile environment
- Mentor junior developers and help raise the engineering bar across the team (senior level)
- Optionally contribute to EU-funded research and innovation projects, including prototyping and technical reporting
RequirementsMust-have
- 3+ years (mid) / 5+ years (senior) of professional software development experience with Python as your primary language
- Strong experience building RESTful APIs with frameworks such as Django
- Solid understanding of relational databases (ideally PostgreSQL) and ORMs (e.g., SQLAlchemy)
- Hands-on experience with Docker and containerised deployments
- Experience with asynchronous programming, background task processing (e.g., Celery, asyncio), and message brokers (e.g., RabbitMQ, Kafka, Redis)
- Proficiency with Git and modern development workflows (branching, pull requests, CI/CD)
- Strong grasp of software engineering fundamentals: testing (pytest), clean architecture, design patterns, and secure coding practices
- Fluency in English (written and spoken)
- Familiarity with cloud platforms (AWS, Azure, or OVH/self-hosted environments) and infrastructure-as-code
- Exposure to Kubernetes or other orchestration platforms
Benefits
- Competitive salary aligned with experience and location
- Flexible working arrangements: hybrid in Athens or fully remote in Switzerland
- The opportunity to work on a modern cybersecurity product with real impact on critical infrastructure and regulated industries
- Involvement in European research and innovation projects alongside academic and industry partners
- A collaborative, low-bureaucracy engineering culture with room to own features end-to-end
- Continuous learning: conference participation, training budget, and certification support
- Modern tech stack and tooling
Skills Required
- 3+ years of professional software development experience for mid-level candidates or 5+ years for senior-level candidates
- Professional software development experience using Python as the primary programming language
- Strong experience building RESTful APIs with frameworks such as Django
- Experience with relational databases, ideally PostgreSQL, and ORMs such as SQLAlchemy
- Hands-on experience with Docker and containerized deployments
- Experience with asynchronous programming, background task processing such as Celery or asyncio, and message brokers such as RabbitMQ, Kafka, or Redis
- Proficiency with Git and modern development workflows, including branching, pull requests, and CI/CD
- Understanding of software engineering fundamentals, including testing with pytest, clean architecture, design patterns, and secure coding practices
- Fluency in written and spoken English
- Familiarity with cloud platforms such as AWS, Azure, or OVH/self-hosted environments and infrastructure as code
- Exposure to Kubernetes or other orchestration platforms
What We Do
SPHYNX offers products and solutions, and consulting services, in the areas of cyber intelligence, analytics, incident response, assurance, and certification. We provide customised and continuous security and privacy assessment solutions, covering the full range of socio-technical aspects of a modern enterprise, for internal risk management and/or external security audit and certification. Our solutions are based on our novel security assurance and certification platform and its advanced analytics and cyber intelligence. In addition, its consulting services, SPHYNX has expertise in providing customized solutions depending on client needs as well as more general training on analytics, security assessment and certification and cyber intelligence.
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