Sr. Backend .Net Developer

Spectraforce Technologies
United States, Texas, Austin
2435 East Riverside Drive (Show on map)
Sep 17, 2026
Title: Sr. Backend .NET Developer Contract/Perm: 3m contract to start (could extend) Location: Austin, TX - hybrid 4 days on site 1 WFH Job Description: This position will be part of the Online Security Modernization Technology (OST) at client, focused on providing authentication and authorization across all lines of business. We focus on driving client-centricity, reducing time to market & increasing efficiency. OST offers a wide range of technology opportunities for the best and brightest people to grow and prove their skills as they develop high-performance financial applications The Senior .NET/C# Developer, with skills equivalent to 6-10 years in a comparable position, will serve as a hands-on lead developer in a dynamic, fast-paced, and Agile environment. This role is a part of the Online Security Technologies team, responsible for designing, developing, and supporting a mission-critical Authentication platform. The responsibilities are divided into 50% design and 50% development, requiring the successful candidate to contribute both as a coder and system designer. This position collaborates with a team of experienced engineers focused on the Agile development life cycle and ensuring on-time, high-quality software releases. Responsibilities: Lead the development and delivery of organizational software products through QA, UAT, and Production phases. Collaborate with product owners and key stakeholders across Project Management, Business, QA, and Technology Operations to ensure projects are delivered on schedule and within budget. Partner with the Scrum Master and product owner to provide accurate development sizing and cost analysis estimates. Work alongside the product owner and team members on story decomposition, feature design, and task prioritization. Utilize automated testing tools and frameworks, including test-driven development, to uphold software quality standards. Support Identity and credential managements system for Authentication between internal and external Schwab systems. Help resolve needs and remove roadblocks identified by team members in collaboration with the Scrum Master. Coordinate individual team deliverables to facilitate successful product releases. Identify technology risks promptly and implement mitigation strategies. Conduct regular reviews and code quality improvement sessions with both onshore and offshore developers, emphasizing requirements specification and design methodologies. Prototype, validate, and develop tailored application solutions to address business requirements. MUST HAVE: Demonstrated expertise in developing server-side applications (API Subject Matter Expert) utilizing C# and .NET technologies. Extensive experience designing and implementing solutions for applications requiring high availability, throughput, and scalability. Strong knowledge of contemporary system architecture as well as development standards and guidelines. Proven ability to mentor and provide guidance to junior team members. Background in AI development and Specification-Driven Development. Experience working with Identity and Access Management (IAM) systems Qualifications: Bachelor's or master's degree in computer science or a related technical field. Over 7 years of hands-on application programming and/or test automation framework experience within an Agile development environment. Proficient in software development using .NET technologies. At least 3 years of demonstrated leadership in delivering and driving the adoption of technical innovations across teams. Strong familiarity with Agile/Lean development and testing methodologies, including Test Driven Development, Continuous Integration, and Continuous Delivery. Experience working with databases such as MongoDB and Aerospike. Knowledge of authentication protocols such as Kerberos, certificate-based authentication, and Ping Identity solutions. Skilled in testing RESTful web services using test automation frameworks; capable of parsing nested JSON and XML. Experience with SOAP is advantageous. Proven ability to perform effectively under pressure in challenging environments. Proficient with source control systems and Agile tools including Bitbucket, Jira, Zephyr, Bamboo, and Git. Experience with Google Cloud Platform. Background in CI/CD environments (e.g., Bamboo), including creating, modifying, and executing jobs from scratch using Git as a source control system. Expertise in troubleshooting production issues through analysis of logs (Splunk), dashboards, and metrics. Previous experience within the financial services or brokerage industry.