Senior Software Engineer, Identity

About the role

Join Twilio to help build the next generation of identity solutions. You will contribute to scaling core products and delivering secure, developer-focused authentication and authorization experiences. This role offers a unique opportunity to work with startup-like agility within a large, established company. You will operate at the intersection of platform engineering and identity, solving intricate problems that impact global customers. Your work will directly influence how developers integrate secure access into their applications. You will thrive in an environment that values ownership, clarity, and rapid execution. This position is critical to the continued evolution of Twilio's identity and access management capabilities.

Key facts

What you'll do

• Architect and implement backend services that form the foundation of the Stytch identity platform, designing new API endpoints and core authentication workflows with scalability in mind.
• Partner closely with product managers and engineering leaders to define the future direction of identity products, translating nuanced customer requirements into robust technical specifications and features.
• Liaise effectively with multiple Twilio and Stytch teams to ensure architectural alignment, seamless platform integration, and consistent implementation of identity standards.
• Exercise full ownership over technical design decisions, enforcing high code quality, establishing best practices, and guaranteeing the long-term reliability of critical production systems.
• Analyze and resolve complex technical challenges, making sound architectural decisions that balance innovation with stability and create exceptional, intuitive developer experiences.
• Proactively monitor system health, drive performance optimization initiatives, and lead incident response efforts to enhance system resilience and ensure maximum uptime.
• Provide technical leadership by mentoring fellow engineers, elevating the entire team's capabilities, and driving the establishment of rigorous software engineering standards.
• Evaluate emerging technologies and frameworks, conducting proof-of-concept work to assess their viability for identity-related problems and future platform needs.
• Collaborate with security specialists to implement and maintain robust security controls, ensuring compliance with industry standards and protecting sensitive identity data throughout the system lifecycle.
• Optimize database schemas, caching strategies, and infrastructure configurations to support high-throughput identity operations while maintaining low latency and cost efficiency.
• Define and own critical service-level objectives and service-level indicators, implementing detailed monitoring and alerting to maintain visibility into production behavior.
• Streamline deployment processes and CI/CD pipelines to accelerate release cycles, reduce risk, and enable the team to deliver updates to identity features safely and frequently.
• Contribute to the development of internal tools that empower other engineers to build and debug identity integrations more effectively and with greater confidence.
• Act as a technical advocate for the Stytch platform, representing its capabilities and limitations to internal stakeholders and external partners during discovery and design phases.

Requirements

• Bring a minimum of 6 years of professional experience designing, building, and operating large-scale, critical cloud-based production systems that handle high traffic and demand.
• Demonstrate proficiency in a modern programming language, coupled with a strong understanding of software design principles, best coding practices, and clean code fundamentals.
• Possess extensive experience in the full lifecycle of designing, developing, and maintaining RESTful APIs, including versioning, documentation, and robust error handling.
• Hold a Bachelor's degree in Computer Science or a related technical field, or equivalent practical experience that demonstrates a deep grasp of computational concepts.
• Exhibit strong written and verbal communication abilities, capable of articulating complex technical concepts clearly to both technical and non-technical audiences.
• Confirm availability for on-call rotations, including nights, weekends, and holidays, to ensure system reliability and timely response to production issues.
• Show a proven track record of working effectively within agile development processes, collaborating with cross-functional teams to deliver impactful software solutions.
• Have experience with distributed systems architectures and a solid understanding of how to build resilient, fault-tolerant services in a cloud environment.

Nice to have

• Demonstrated experience working with Go, TypeScript, and DynamoDB to build high-performance backend services.
• A background in building developer tools, SDKs, or platforms that enable other software teams to integrate products efficiently.
• Prior experience in developing and successfully managing products that serve paying customers, with a focus on subscription-based models and revenue impact.

Skills & tools

• Backend development
• API design
• Cloud systems
• Go
• TypeScript
• DynamoDB

Practical notes

• Occasional travel may be required for team or customer meetings, primarily within the local region or for key strategic engagements.
• Compensation for this role varies based on geographic location within the United States, reflecting local market standards and cost of living adjustments. Specific ranges are provided for reference: Colorado, Hawaii, Illinois, Maryland, Massachusetts, Minnesota, Vermont, Washington D.C.: $141,520 - $176,900. New York, New Jersey, Washington State, California (outside SF Bay Area): $149,840 - $187,300. San Francisco Bay Area, California: $166,400 - $208,000. These figures represent targeted base salary ranges for the specified locations.
• This role may be eligible for equity participation and a corporate bonus plan as part of the total rewards package, subject to eligibility criteria and plan terms.
• The total rewards package includes comprehensive benefits such as health insurance coverage, contributions to a 401(k) retirement plan, paid time off, and parental leave policies.
• Twilio is committed to building a diverse team and is an equal opportunity employer. Participation in E-Verify is required for roles where applicable by law.