Remote Senior Backend Engineer - Identity & Privacy

United States Digital Space LLC; United States; Remote; USD 140,000 - 210,000; Full time

Job summary

United States Digital Space LLC is hiring a Senior Software Engineer to design and scale backend services that enforce identity and privacy rules across our product surfaces. You will own authorization logic, data modeling, and migrations at scale, collaborating with teams like messaging, trips, and profile.

You will work in a true backend-focused role, shipping migrations with backward-compatible changes while maintaining clear documentation and strong code quality.

Qualifications

• 6+ years of professional backend software engineering experience, with strong fundamentals in service-oriented architecture, API design, and data modeling
• Proficiency in Java and/or Kotlin, and comfort working within a microservices environment (RPC frameworks, service IDLs, dependency injection)
• Experience designing systems with correctness and authorization as first-class concerns, not an afterthought
• A track record of shipping migrations or infrastructure changes that other teams depend on, with attention to backward compatibility and rollout safety
• Strong written communication. You can clearly document a problem, its root cause, and trade-offs between solutions before escalating or proposing a fix
• Comfort with ambiguity: you can take a complex, evolving privacy or identity requirement and turn it into a concrete technical design without needing every detail spelled out

Responsibilities

• Design and build backend services and APIs that enforce identity and privacy rules consistently across the company's product surfaces
• Contribute to large-scale migrations — including the tooling that makes those migrations safe to run broadly, not just the one-off fixes
• Define and evolve authorization logic for context-scoped data access, and reason clearly about edge cases (e.g., who's allowed to see what, and why that answer differs by relationship or product surface)
• Partner with the teams building on top of your systems — messaging, trips, profile, and beyond — to make sure privacy primitives are usable and hard to misuse
• Participate in design and code reviews, and raise the bar for correctness on a part of the codebase where mistakes are costly
• Debug and resolve production issues with clear, structured root-cause analysis rather than surface-level fixes

Skills

Java

Kotlin

Microservices

API design

Data modeling

Authorization

Service-oriented architecture

Tools

RPC frameworks

Service IDLs

Dependency Injection

Job description

United States Digital Space LLC is hiring a Senior Software Engineer to design and scale backend services that enforce identity and privacy rules across our product surfaces. You will own authorization logic, data modeling, and migrations at scale, collaborating with teams like messaging, trips, and profile.

You will work in a true backend-focused role, shipping migrations with backward-compatible changes while maintaining clear documentation and strong code quality.