Lead Software Engineer, Platform Authentication

Company Overview Docusign brings agreements to life. More than 1.8 million customers and more than a billion people in over 180 countries use Docusign solutions to accelerate the process of doing business and simplify people’s lives. With intelligent agreement management, Docusign unleashes business-critical data that is trapped inside of documents. Until now, these were disconnected from business systems of record, costing businesses time, money, and opportunity.

Using the Docusign AI-native IAM platform, companies can create, commit, and manage agreements with solutions created by the #1 company in e-signature and contract lifecycle management (CLM).What you'll do Docusign's Platform Authentication team builds the identity and authentication capabilities that enable secure, reliable access across Docusign products and services. As a Lead Software Engineer, you will help define and deliver the next generation of authentication infrastructure, including login, single sign-on, OAuth, token services, session management, and other identity platform capabilities.

You will work on highly available, security-sensitive distributed systems used by customers and internal teams around the world. This role is ideal for an engineer who combines strong backend engineering skills with practical industry experience in authentication and identity. You will lead technical design and delivery for complex initiatives, influence partner teams, and raise the quality, security, and operational maturity of the platform.

This position is an individual contributor role reporting to the Manager, Engineering.

Responsibility Lead the architecture, design, implementation, and operation of secure, scalable authentication and identity services

Own significant technical initiatives from problem definition and design through implementation, launch, and ongoing operation

Build highly available APIs and distributed services that support authentication, authorization, token issuance, federation, session management, and identity lifecycle workflows

Apply authentication and authorization standards appropriately to real-world product and platform requirements

Partner with Product Management, Security, Infrastructure, and application engineering teams to define requirements, evaluate tradeoffs, and deliver reliable solutions

Establish and evolve engineering practices for security, availability, observability, testing, and incident response

Investigate complex production issues, lead root-cause analysis, and drive durable improvements to prevent recurrence

Review designs and code, provide technical mentorship, and help grow the authentication engineering community

Communicate clearly with technical and non-technical stakeholders, influence decisions, and build alignment across teams

Contribute to an inclusive, collaborative culture focused on customer trust, engineering excellence, and continuous improvement

Job Designation Hybrid:

Employee divides their time between in-office and remote work. Access to an office location is required. (Frequency: Minimum 2 days per week; may vary by team but will be weekly in-office expectation)
Positions at Docusign are assigned a job designation of either In Office, Hybrid or Remote and are specific to the role/job. Preferred job designations are not guaranteed when changing positions within Docusign. Docusign reserves the right to change a position's job designation depending on business needs and as permitted by local law.

What you bring Basic
12+ years of professional software engineering experience, or equivalent practical experience

Experience designing, building, and operating production backend services and distributed systems

Experience programming in one or more modern languages such as Java, C#, Go, or Type Script/Node.js Experience building or integrating authentication and identity systems

Experience with core authentication and authorization concepts and protocols, including:

OAuth 2.0/OAuth 2.1 concepts and flows, including authorization code with PKCE, client credentials, refresh tokens, scopes, consent, and token lifetime management

OpenID Connect (OIDC), including s, claims, discovery, nonce/state validation, and JWKS/key rotationSAML 2.0, including service-provider and identity-provider concepts, assertions, metadata, certificates, and single sign-onJWTs, signing and verification, key management, token validation, and common implementation risks

Experience applying secure-by-design practices, threat modeling, and defense…