Backend Software Engineer

Backend Software Engineer

Salt are partnering with a US Security Startup building something new at the intersection of technology, security, and scale and we're looking for someone who wants to help shape it from the inside.

This role offers the chance to help shape how core systems are designed, built, and secured from the start - influencing decisions that will define the product as it moves from early traction to scale. You'll have real ownership over meaningful parts of the system, working in a small, high-trust team where individual contributions matter. It's a rare opportunity to build something from the ground up, take responsibility for the outcomes, and embed strong security practices into a product while it's still being formed.

Location: US - 100% Remote
Salary:$180,000 - $230,000 base salary + equity

Responsibilities - Backend Software Engineer:

• Design and build core features for a composite AI platform, including agent-based systems, LLM integrations, and retrieval augmented generation (RAG).
• Define and own the technical vision and roadmap for the platform, making architectural decisions that enable scalability, reliability, and long-term evolution.
• Establish and promote engineering best practices, coding standards, architectural patterns, and AI assisted development techniques to ensure system quality at scale.
• Act as a senior technical leader, providing guidance on complex engineering and architectural trade-offs and shaping the overall technical direction.
• Develop high impact software solutions to address complex, mission critical business problems.

Requirements - Backend Software Engineer:

• Deep experience designing and operating large-scale, production-grade backend systems, with a strong understanding of distributed systems.
• Strong proficiency in Python and Go, applied to building reliable, scalable backend services.
• Demonstrated experience building and owning software from 0-to-1, taking systems from initial concept through production and ongoing ownership.
• Proven ability to influence technical direction and architecture at a senior or cross-team level.
• Ability to clearly connect engineering decisions to business and product outcomes.

Interested? Send your CV to or apply directly. ApplicantsMUST be based in theUnited States currently andFull-Time. Unfortunately, we will not be able to consider anyone who is not based in the United States.

*Rates depend on experience and client requirements