[Remote] Senior Backend Engineer ".Net Core"

Note: The job is a remote job and is open to candidates in USA. Randstad Digital Americas is a premier national security technology firm seeking a Senior Backend Engineer to build the infrastructure for next-generation artificial intelligence and defense applications. The role involves designing resilient systems that prioritize access control and reliability in an event-driven platform.

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

Skills

• 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
• 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

Benefits

• Comprehensive benefits package that includes medical, dental, and vision coverage
• Medical, prescription, dental, vision, AD&D, and life insurance offerings
• Short-term disability
• 401K plan (all benefits are based on eligibility)

Company Overview

Randstad Digital is a trusted digital enablement partner that facilitates accelerated transformation for businesses by providing global talent, capacity, and solutions across specialized domains. It was founded in 1984, and is headquartered in Diemen, Noord-Holland, NLD, with a workforce of 10001+ employees. Its website is https://www.randstaddigital.com.

Company H1B Sponsorship

Randstad Digital Americas has a track record of offering H1B sponsorships, with 364 in 2026, 739 in 2025, 821 in 2024, 47 in 2023. Please note that this does not guarantee sponsorship for this specific role.