Senior Software Engineer, Wallet Identity Server

Summary Join us in building the future of digital identity! With IDs in Wallet, users can use their IDs in person, in app, and on the web. We build the backend systems that make this possible.

Description Our services sit between Apple Wallet and digital credential issuers like state and national governments. We work at the intersection of distributed systems and cryptography, implementing cutting-edge identity features while maintaining the highest levels of security and user privacy. We're actively contributing to and shaping the digital identity ecosystem through standards like ISO 18013/23220, ICAO 9303, and the W3C Digital Credentials API.

Responsibilities

Design, build, and operate highly available and scalable backend services written in Java or Kotlin Architect scalable solutions leveraging technologies like Redis, temporal workflow engine, and distributed databases Work with identity standards including ISO 18013/23220, ICAO 9303, and the W3C Digital Credentials API Collaborate cross-functionally with technical and non-technical experts across Apple Work closely with ML and iOS engineers to prototype, build and test new features, models and ideas Drive the complete development lifecycle through design, implementation, testing, and release Mentor team members and provide technical leadership Navigate complexity by distilling ambiguous requirements into clear, actionable solutions Participate in on-call rotations to ensure service reliability

Minimum Qualifications 5+ years of professional software development experience Experience with full lifecycle of software development, including design, architecture, development, testing and maintenance of mission-critical distributed systems at large scales. Experience developing and launching web services with Java and/or Kotlin. Spring Boot experience Proven development and operational experience with high-volume REST and/or gRPC services (either server-to-server or mobile client facing). Experience architecting, building, and operating cloud-native (e.g. AWS) applications with resilience, failover, and self-healing as core features. Deep understanding of distributed systems fundamentals and trade-offs in consistency, latency, and throughput. Expertise in working on robust CI/CD/ML pipelines for building/delivering/deploying services and models Hands-on experience optimizing SQL/NoSQL databases for scale (e.g. Aurora, DynamoDB, CockroachDB, Oracle) Experience in technical leadership, working with cross functional partners, and team mentorship

Preferred Qualifications Strong experience designing for containerization and orchestration (e.g. Docker, Kubernetes). Hands-on experience with AWS services such as S3 and DynamoDB Extensive experience with observability strategies and tools (e.g. Prometheus, Grafana, OpenTelemetry, Datadog). Deep understanding of modern networking and experience using traffic tools for tracing and debugging. A fundamental appreciation for, and understanding of security, privacy, and cryptography (e.g. PKI, certificate management, JWT). Experience with workflow orchestration tools (e.g. Temporal) Knowledge of security fundamentals such as certificates, PKI, signing and encryption. Experience implementing features with them is a plus! A commitment to engineering excellence, continuous improvement, and the curiosity to evaluate and advocate for new technologies and patterns. An ability to communicate thoughtfully and clearly, both verbally and in writing, to drive consensus on complex technical concepts with diverse audiences, including global teams and external partners. A track record of building and sustaining healthy long-term relationships and technical influence within your team and beyond its boundaries. The tenacity and perseverance to lead complex projects all the way from conception to production.

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