Senior Backend Engineer ".Net Core"

job summary:

Are you ready to build the infrastructure that powers next-generation artificial intelligence and defense applications? A premier national security technology firm is seeking a Senior Backend Engineer to shape the core of their highly resilient, event-driven platform. In this critical role, you will help design systems built for environments where access control and reliability are paramount. As a permanent, direct-hire employee, you will receive a comprehensive benefits package that includes medical, dental, and vision coverage.

location: Telecommute

job type: Permanent

salary: $140,000 - 200,000 per year

work hours: 9am to 5pm

education: Bachelors



responsibilities:

• Orchestrate complex AI agent interactions, assemble dynamic context, and manage conversation states utilizing event-sourced architectures.
• Expand a real-time context system that gathers information during runtime from specialized knowledge bases, encompassing memory systems and information retrieval.
• Enhance architectural models that allow AI agents to delegate tasks and execute specialized processes concurrently.
• Develop the execution layer where agents discover and utilize various tools, ensuring every tenant maintains isolated credentials alongside comprehensive audit logs.
• Advance secure, sandboxed code execution environments and establish strict safety guardrails for autonomous operations.

Nice-to-Haves

• Hands-on experience utilizing messaging systems such as NATS or JetStream.
• Familiarity with managing and scaling Kubernetes in a live production environment.
• Proficiency working with MongoDB or comparable document-oriented databases.
• Previous experience architecting multi-tenant Software-as-a-Service (SaaS) platforms.
• A background in engineering developer tools, AI agent frameworks, or secure code execution platforms.

Skills

• C# / .NET Core
• Event Sourcing & Event-Driven Architecture
• Distributed Systems Design
• NATS JetStream
• MongoDB & Redis
• Kubernetes
• Multi-tenant SaaS Architecture
• HTTP & MCP Protocols

qualifications:

Must-Haves

-Robust professional background in .NET Core or a similar modern backend technology stack. -Demonstrated expertise engineering event-driven or event-sourced software architectures.

-Proven track record of designing, deploying, and maintaining distributed systems at a production scale.

Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact

Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).

This posting is open for thirty (30) days.


It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.