Software Engineer Sr

The most security-conscious organizations trust Telos Corporation to protect their vital IT assets. The reputation of our company rests on the quality of our solutions and the integrity of our people. Explore what you can bring to our solutions in the areas of cyber, cloud and enterprise security.

Be a part of the Telos culture and see what sets us apart! Telos offers an excellent compensation package with benefits that include generous paid time off, medical, dental, vision, tuition reimbursement, and 401k. Our employees enjoy more than just a great work environment!

This position will be based at Ashburn Hybrid/ or Remote

Responsibilities:

The Senior Software Engineer will contribute to the design, development, and operation of Telos's background check and identity verification platform. The platform serves government and enterprise clients through multiple product lines deployed on AWS GovCloud.

This is a full-stack role spanning web frontend, .NET microservices, and cloud infrastructure. The successful candidate will be expected to develop deep knowledge of the enrollment and case management product and its workflows, contribute across multiple applications and services, and grow into ownership of platform features and components.

Key Responsibilities

• Design, implement, test, and support production software using TypeScript, Angular, C#, .NET 8, ASP.NET Core, and Entity Framework Core.
• Develop features for the Angular 21 web portal, including PrimeNG component development, multi-tenant enrollment workflows, biometric capture integration, and SQL-based reporting.
• Build and maintain .NET microservices handling authentication, enrollment, case management, fingerprint processing, payment, notifications, and orchestration.
• Write unit and integration tests alongside feature development using Karma/Jasmine, Playwright, xUnit, FluentAssertions, and Testcontainers.
• Contribute to GitLab CI/CD pipelines, Docker multi-stage builds, container security scanning (Snyk, Trivy), and release workflows across multiple environments (dev, staging, preprod, production).
• Support application deployments running on AWS GovCloud including ECS (Fargate), ECR, S3, RDS (SQL Server/MySQL), SQS/SNS, SSM Parameter Store, and KMS.
• Work with MassTransit event-driven messaging, Hangfire background job processing, and Ocelot API gateway routing.
• Diagnose production issues across application, device, network, and infrastructure boundaries.
• Work with product, operations, security, QA, government-program stakeholders, and external hardware vendors.
• Participate in code reviews and contribute to engineering standards.
• Document features, integration behavior, operational procedures, and architectural decisions.