Principle Software Engineer

blackduck; Belfast City District; On-site; GBP 120,000 - 160,000; Full time

Job summary

Black Duck Software, Inc. is seeking a Principal Software Engineer to lead identity, authentication, authorization, and access management platforms. You will drive architecture, design, and security of critical IAM services that support customers, partners, and internal teams.

You will combine deep identity expertise with strong engineering leadership to shape secure, scalable SaaS platforms and mentor engineers across the organization.

Qualifications

• Bachelor's degree or equivalent in CS/engineering.
• 10+ years of software engineering with architecture/leadership responsibilities.
• Extensive IAM/CIAM design, implementation, and operations.
• Hands-on with major identity platforms like Auth0, Okta, Entra ID, Ping Identity.
• Expert in OAuth 2.0, OIDC, SAML, MFA, federation, token-based security.
• Experience building/scaling IAM for customer-facing SaaS.
• Distributed systems, APIs, and cloud-native apps.
• Strong communication to influence direction across stakeholders.
• Familiar with AI-assisted development tools and AI-driven workflows.

Responsibilities

• Lead architecture and evolution of enterprise-scale identity and access management solutions.
• Serve as the technical authority for authentication, authorization, federation, and identity lifecycle management.
• Design secure, scalable, and resilient systems that support multiple products and teams.
• Provide technical leadership and architectural guidance across cross-functional initiatives.
• Drive engineering excellence through reviews, mentoring, and best-practice adoption.
• Collaborate with security, product, and operations to deliver reliable services.
• Lead investigations, evaluate new technologies, and align with business goals.
• Improve observability, performance, and operational efficiency.
• Shape the long-term technology strategy and engineering roadmap.
• Mentor engineers and technical leaders across the organization.

Skills

IAM architecture

CIAM

OAuth 2.0

OIDC

SAML

MFA

Zero Trust

SSO

Cloud-native

Distributed systems

API design

Leadership

Mentoring

Education

Bachelor's degree in Computer Science, Engineering, or equivalent practical experience

Tools

Auth0

Okta

Azure AD

Ping Identity

Job description

Black Duck Software, Inc. helps organizations build secure, high-quality software, minimizing risks while maximizing speed and productivity. Black Duck, a recognized pioneer in application security, provides SAST, SCA, and DAST solutions that enable teams to quickly find and fix vulnerabilities and defects in proprietary code, open source components, and application behavior. With a combination of industry-leading tools, services, and expertise, only Black Duck helps organizations maximize security and quality in DevSecOps and throughout the software development life cycle.

Black Duck is seeking a Principal Software Engineer to serve as a technical leader for the company's identity, authentication, authorization, and access management platforms. This role will drive the architecture, design, implementation, security, scalability, and operational excellence of critical identity services that support customers, partners, and internal engineering teams.

The successful candidate will combine deep expertise in modern identity technologies with strong software engineering and architectural leadership skills. They will influence technical direction across multiple teams, establish engineering standards, mentor engineers, and help shape the future of secure, scalable SaaS platforms.

Responsibilities

• Lead the architecture, design, and evolution of enterprise-scale identity and access management solutions.
• Serve as the organization's technical authority for authentication, authorization, federation, and identity lifecycle management.
• Design and implement secure, scalable, and resilient software systems that support multiple products and engineering teams.
• Provide technical leadership and architectural guidance across cross-functional initiatives.
• Drive engineering excellence through software design reviews, code reviews, mentoring, and the establishment of engineering best practices.
• Partner with engineering, product, security, and operations teams to deliver secure, reliable, and highly available services.
• Lead technical investigations, evaluate emerging technologies, and recommend solutions aligned with business and engineering objectives.
• Improve platform observability, maintainability, performance, and operational efficiency.
• Influence long-term technology strategy and help shape the engineering roadmap.
• Mentor engineers and technical leaders across the organization.
• Promote effective adoption of AI-assisted development tools and modern software engineering practices throughout the software development lifecycle.
• Help advance the organization's AI maturity by identifying opportunities to improve engineering productivity, software quality, and delivery outcomes through responsible use of AI technologies.

Required Qualifications

• Bachelor's degree in Computer Science, Engineering, or equivalent practical experience.
• 10+ years of software engineering experience, including architecture and technical leadership responsibilities.
• Extensive experience designing, implementing, and operating Identity and Access Management (IAM) and Customer Identity and Access Management (CIAM) solutions.
• Deep hands-on experience with modern identity platforms such as Auth0, Okta, Microsoft Entra ID (Azure AD), Ping Identity, or similar technologies.
• Expert understanding of OAuth 2.0, OpenID Connect (OIDC), SAML, Multi-Factor Authentication (MFA), federation, token-based security, and modern authentication patterns.
• Experience building and operating identity solutions at scale for customer-facing SaaS applications.
• Strong experience designing and building distributed systems, APIs, and cloud-native applications.
• Deep understanding of software architecture, security principles, and modern engineering practices.
• Experience leading technical initiatives that span multiple teams and organizations.
• Strong communication skills with the ability to influence technical direction and build alignment across diverse stakeholders.
• Familiarity with AI-assisted software development tools and a solid understanding of how AI can improve engineering effectiveness throughout the software development lifecycle.

Preferred Qualifications

• Experience leading identity platform migrations, consolidations, or modernization initiatives.
• Experience designing Zero Trust, Single Sign-On (SSO), and enterprise federation architectures.
• Experience with cloud infrastructure, containerized environments, and modern SaaS platforms.
• Experience operating in highly regulated or security-focused environments.
• Experience with security, privacy, compliance, or audit requirements for enterprise software systems.
• Experience evaluating, implementing, or promoting AI-enabled development tools and engineering workflows.

What Success Looks Like

• Serves as the organization's recognized expert for identity architecture and authentication technologies.
• Establishes scalable, secure, and reliable identity services that support current and future business nee