Senior Software Engineer, Online Security & Identi

Our client is currently seeking a Senior Software Engineer, Online Security & Identity Location : Hybrid in Austin, TX (On-site 4 days per week) Job Type : 3 months (strong possibility for extension) About the job As a hands-on Lead Developer on our Online Security Technologies team, you will drive the design, development, and operational excellence of a mission-critical enterprise authentication platform. In this role, your time will be balanced equally between high-level system architecture and hands-on coding (50% design, 50% development). You will collaborate with a distributed engineering team in an Agile environment to build secure, scalable solutions that manage identity and access across internal infrastructure and external ecosystem partners, ensuring resilient, high-quality releases. Responsibilities Lead the end-to-end technical design, development, and deployment of software products across QA, UAT, and Production stages. Partner with Product Owners, Scrum Masters, and cross-functional teams (Project Management, QA, Technology Operations) to define requirements, decompose user stories, prioritize technical backlogs, and provide accurate sizing estimates. Architect, prototype, and implement high-availability, fault-tolerant server-side solutions for enterprise identity, credential management, and authentication services. Establish and champion engineering standards through regular design sessions and peer code reviews with onshore and offshore engineering teams. Uphold software quality and continuous delivery by implementing Test-Driven Development (TDD), automated integration testing, and CI/CD automation. Proactively identify technical risks, remove blockers, and implement effective mitigation strategies to safeguard delivery schedules. Troubleshoot complex production issues through deep log analysis, metrics tracking, and observability dashboards. Mentor junior and mid-level engineers, fostering continuous learning in software engineering best practices and modern architectural patterns. Minimum qualifications Bachelor's or Master's degree in Computer Science, a related technical field, or equivalent practical experience. 7+ years of hands-on software development experience building robust server-side APIs and distributed applications using C# and .NET technologies. Proven experience designing and implementing scalable, high-throughput systems operating under high availability requirements. Solid background working with Identity and Access Management (IAM) systems and authentication protocols (e.g., Kerberos, certificate-based authentication, modern identity providers). Hands-on experience with automated testing frameworks for RESTful web services (handling JSON/XML) and practicing Test-Driven Development (TDD) in an Agile/Lean setting. Experience with source control, issue tracking, and build automation tools (e.g., Git, Bitbucket, Jira, Bamboo). Preferred qualifications 3+ years of experience in a technical lead or mentoring capacity, guiding engineering teams and driving modern architecture adoption. Experience with NoSQL and distributed data stores, such as MongoDB or Aerospike. Working knowledge of cloud platforms, specifically Google Cloud Platform (GCP). Familiarity with AI-driven development workflows and Specification-Driven Development methodologies. Hands-on experience with telemetry and log analysis tools such as Splunk for diagnosing complex runtime issues. Domain knowledge in financial services, fintech, or brokerage security environments. Medical, dental, and vision insurance are available to qualified candidates who meet eligibility requirements. The Judge Group