Software Engineer Sr. Security Clearance

Position: Software Engineer Sr. with Security Clearance
Job Title Software Engineer Sr.

- (3636)

Job Description 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 Gov Cloud.
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 Type Script, 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, Fluent Assertions, and Testcontainers.

• Contribute to Git Lab 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 Gov Cloud including ECS (Fargate), ECR, S3, RDS (SQL Server/MySQL), SQS/SNS, SSM Parameter Store, and KMS.

• Work with Mass Transit 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.

Job Requirements

Qualifications:

• Bachelor's or equivalent with 7+ years of professional software engineering experience with a track record of delivering production software.

• Strong Type Script and JavaScript experience, including experience with Angular (or comparable SPA framework) and reactive patterns.

• Experience with C#, .NET, and ASP.NET Core for building REST APIs and microservices.

• Experience with relational databases and ORMs (Entity Framework Core, MySQL, or SQL Server).

• Experience with AWS services (ECS, ECR, S3, SQS/SNS, Lambda, SSM Parameter Store) and containerization (Docker).

• Experience with automated testing, CI/CD, and production releases.

• Understanding of event-driven architecture and message brokers (SQS, SNS, or comparable).

• Ability to understand complex business workflows and become a technical contributor across a platform.

• Strong written and verbal communication skills.

• Ability to work in a security-sensitive, regulated, or government-program environment.

• Willingness to obtain a U.S. government security clearance (background check required).

Preferred Qualifications

• Angular 21, PrimeNG, Angular Material, SCSS, RxJS, ngx-permissions.
• .NET 8, Entity Framework Core, Pomelo EF MySQL, Dapper, Mass Transit, Hangfire, Ocelot.

• AWS Gov Cloud (us-gov-west-1 / us-gov-east-1), ECS Fargate, Cloud Formation, Pulumi, IAM,…