Senior Software Engineer, Security

Complexio

full-time

Posted on: 9/17/2025

Origin: • 🇬🇧 United Kingdom

Visit company website

✨ AI Apply

Apply

Job Level

Senior

Tech Stack

AWSAzureCloudDockerGraphQLKubernetesNeo4jNoSQLPostgresPythonRedisSQL

About the role

Design and implement a comprehensive data privacy and access control architecture addressing multi-dimensional classification, dynamic permissions, and information barriers
Build a custom encryption service within a micro-services architecture, including secure service development, OAuth integrations, and identity provider connections
Architect a multi-layered access control model combining Role-Based Access Control (RBAC), Attribute-Based Access Control (ABAC), and purpose-based limitations
Oversee implementation of fine-grained data classification frameworks using NLP and other technologies
Design and validate permission propagation mechanisms for graph data models and derived insights
Establish security boundaries for autonomous AI agents, ensuring proper context isolation and privilege controls
Work closely with engineering teams to integrate privacy controls into the data pipeline, knowledge graph, and AI components
Collaborate with product management to balance privacy requirements with usability and functionality
Coordinate with customer success to address client-specific privacy and compliance needs
Develop and enforce security and privacy standards, policies, and best practices throughout the product development lifecycle
Influence and guide development teams to prioritize privacy-by-design principles

Requirements

5+ years of experience in information security, data privacy, or access control systems
Proven track record designing and implementing complex security architectures
Strong knowledge of modern authorization frameworks, RBAC/ABAC systems, and data classification methodologies
Experience leading teams and influencing cross-functional stakeholders
Technical background with understanding of databases, APIs, and enterprise software architecture
Knowledge of AI/ML systems and the unique privacy challenges they present
Understanding of data privacy regulations (GDPR, CCPA) and their technical implementation requirements
Familiarity with LLMs and the privacy implications of their use in enterprise contexts
Understanding of vector databases and embedding-based systems
Experience in regulated industries (finance, healthcare, legal) with complex information barrier requirements
Background in data lineage and provenance tracking systems
Experience with graph databases (particularly Neo4j) and their security models
Security certifications such as CISSP, CIPT, or CIPP/E
Experience building encryption systems (e.g. AES, RSA, and key management services)
Hands-on development with OAuth 2.0, OpenID Connect, JWT validation, and RBAC/ABAC systems
Building secure REST/GraphQL APIs with middleware for authentication, rate limiting, and input validation
Implementing access controls, query filtering, and audit logging for SQL and NoSQL databases
Securing pub/sub systems with encryption, authentication, and access controls
Required technologies: Python (async/await, cryptography libraries, FastAPI); Container security (Docker, Kubernetes secrets, network policies); Identity providers (Microsoft EntraID, Okta, Auth0 integration); Database systems (PostgreSQL, Redis, graph databases); Cloud security (AWS/Azure IAM, KMS, security groups)
Practical experience: built production encryption/decryption systems handling sensitive data at scale; implemented fine-grained permission systems beyond simple role-based access; developed secure multi-tenant applications with data isolation; created audit logging and compliance reporting for regulated environments; integrated with enterprise identity systems in complex organizational structures

Senior Software Engineer, Security

Job Level

Tech Stack

About the role

Requirements

Similar jobs on JobTailor

Full-Stack Engineer

Full-Stack Engineer

Backend Developer

Senior SDET – Cloud, Endpoint

Tech Lead