We are looking for a proactive, communicative Senior Backend Engineer (Python) with a strong end-to-end mindset to join a new remote team working on an innovative cybersecurity product.In this role, you will be directly involved in building backend services from scratch, shaping architecture, and delivering high-impact features for a new AI-driven security solution. You will work closely with technical leadership and product stakeholders, taking full ownership of your work.If you enjoy autonomy, responsibility, and building real products that matter – this role is for you.Responsibilities Design and develop backend services for a new cybersecurity product Build scalable microservices and APIs from scratch Take full ownership of features from early requirements to production delivery Collaborate closely with Engineering and Product teams Work on integrations with third-party systems and service providers Contribute to cloud architecture and infrastructure decisions Write clean, scalable, and maintainable Python code Ensure high performance, availability, and reliability of backend systems Proactively communicate progress, risks, and technical decisions Participate in architecture, code, and operational reviews Requirements A minimum of 5 years of hands-on backend development experience 3–4+ years of strong Python experience (Django / FastAPI / SQLAlchemy is a plus) Proven experience designing and implementing robust, scalable production systems Strong proficiency with SQL and NoSQL databases (PostgreSQL, VectorDB) Experience working with cloud platforms, preferably AWS Hands-on experience building services and systems from scratch Experience with cloud architecture and managed services (SQS, SNS, EKS, S3, SES, etc.) Ability to manage requirements and deliver features end to end Upper-Intermediate English with strong verbal communication skills Will be a plus Experience with LLMs or AI-based systems Familiarity with AI-assisted development tools Kubernetes / Docker / CI/CD experience Background in SaaS or large-scale cloud products Mentorship experience What we offer Competitive compensation Medical insurance Top equipment kit Full Remote work Long-term cooperation  Standard Newxel benefits package Professional, collaborative, and mature engineering environment Career growth and development opportunities About the projectA global anti-phishing technology company is building a new AI-powered cybersecurity product focused on protecting businesses from fraud, phishing, and deepfake impersonation attacks.The product leverages microservices architecture, cloud-native infrastructure, and AI / LLM-based technologies, including video and audio analysis to verify the authenticity of communication.This is a greenfield initiative with integrations into an existing monolithic platform, offering the opportunity to influence architecture and product direction from an early stage.What Makes This Project Interesting Opportunity to work on a completely new product in the cybersecurity domain Hands-on work with cutting-edge technologies: AI, LLMs, video and audio analysis Build microservices from scratch and participate in architectural decision-making Full development cycle: from task definition to delivery High ownership, visibility, and impact on the final product