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.ResponsibilitiesDesign and develop backend services for a new cybersecurity productBuild scalable microservices and APIs from scratchTake full ownership of features from early requirements to production deliveryCollaborate closely with Engineering and Product teamsWork on integrations with third-party systems and service providersContribute to cloud architecture and infrastructure decisionsWrite clean, scalable, and maintainable Python codeEnsure high performance, availability, and reliability of backend systemsProactively communicate progress, risks, and technical decisionsParticipate in architecture, code, and operational reviewsRequirementsA minimum of 5 years of hands-on backend development experience3–4+ years of strong Python experience (Django / FastAPI / SQLAlchemy is a plus)Proven experience designing and implementing robust, scalable production systemsStrong proficiency with SQL and NoSQL databases (PostgreSQL, VectorDB)Experience working with cloud platforms, preferably AWSHands-on experience building services and systems from scratchExperience with cloud architecture and managed services (SQS, SNS, EKS, S3, SES, etc.)Ability to manage requirements and deliver features end to endUpper-Intermediate English with strong verbal communication skillsWill be a plusExperience with LLMs or AI-based systemsFamiliarity with AI-assisted development toolsKubernetes / Docker / CI/CD experienceBackground in SaaS or large-scale cloud productsMentorship experienceWhat we offerCompetitive compensationMedical insuranceTop equipment kitFull Remote workLong-term cooperation Standard Newxel benefits packageProfessional, collaborative, and mature engineering environmentCareer growth and development opportunitiesAbout 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 InterestingOpportunity to work on a completely new product in the cybersecurity domainHands-on work with cutting-edge technologies: AI, LLMs, video and audio analysisBuild microservices from scratch and participate in architectural decision-makingFull development cycle: from task definition to deliveryHigh ownership, visibility, and impact on the final product