Radiant

Senior Software Engineer - Security

Radiant
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2 days ago
United Kingdom (city not specified)Senior

Responsibilities

  • Design, build, operate, and own security services and platform capabilities from technical design through production.
  • Build IAM, RBAC, workload identity, secrets, encryption, key management, audit logging, network control, and policy enforcement capabilities.
  • Translate product, customer, and regulatory requirements into secure APIs and implementations.
  • Automate policy enforcement, configuration hardening, detection, remediation, and software supply chain security.
  • Implement tenant isolation and least-privilege access across control-plane, network-plane, and data-plane systems.
  • Support enterprise security reviews, audits, and incident response.
  • Contribute to architecture, security engineering standards, code reviews, and the growth of less experienced engineers.

Requirements

  • Strong hands-on engineering skills in Go or similar systems languages.
  • Experience building and operating distributed systems with depth in cloud security, network security, IAM, or security infrastructure.
  • Experience owning significant components end to end, from design through production and operation.
  • Knowledge of identity and access technologies including IAM, RBAC/ABAC, OAuth 2.0, OIDC, SAML, SSO, federation, mTLS, and workload or service identity.
  • Knowledge of applied cryptography, encryption, secrets management, KMS/HSM, key rotation, and policy engines.
  • Experience or familiarity with Kubernetes, containers, runtime isolation, cloud networking, compute, storage, audit logging, detection engineering, vulnerability management, and incident response.
  • Experience with or familiarity with Vault, OPA/Gatekeeper, SPIFFE/SPIRE, Kubernetes admission control and security tooling, Sigstore, SIEM platforms, and cloud KMS.
  • Understanding of multi-tenancy, least privilege, zero-trust architecture, threat modeling, and shared-responsibility models.
  • Familiarity with SOC 2 or ISO 27001 and translating compliance requirements into technical controls.
  • Ability to balance security, performance, reliability, operational complexity, and developer experience.
  • Clear written and verbal communication, including design documentation and explaining technical trade-offs.

Benefits

  • 25 days of annual leave.
  • Private medical insurance through Bupa.
  • Cycle to Work Scheme.
  • Gympass subscription to gyms and wellbeing apps.
  • Participation in the company shares program.
  • Enhanced parental pay and leave.
  • Dedicated learning time for new skills, projects, or interests.
  • Open communication, regular feedback, and a collaborative culture.

Tech Stack

Categories

Radiant

About Radiant

501-1,000 employees

RadiAnt develops RadiAnt DICOM Viewer, a lightweight Windows application for viewing and analyzing medical images from CT, MRI, PET, ultrasound, and X‑ray. It sells commercial licenses (with a free trial) to radiology practices, hospitals, and researchers, and supports PACS query/retrieve, multi-modality workflows, and 2D/3D reconstructions. The software can open studies from local media and networked DICOM servers for clinical review and teaching use cases.

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