Software Engineer, Full Stack

Sweep360

Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of experience in production code that cannot fail
  • Strong skills as a polyglot developer (JS, Python, Rust/Go is a plus)
  • Deep expertise in secure, scalable cloud deployment (AWS/GCP)
  • Experience working with LLMs, vector databases, and prompt pipelines
  • Startup mindset: independent, accountable, relentless in execution

Responsibilities

  • Build mission-critical full-stack systems for web, mobile, and backend environments
  • Deploy secure cloud infrastructure and edge AI for real-time defense
  • Integrate LLMs, graph reasoning, and sensor fusion to detect threats
  • Ensure reliability through rigorous testing, automation, and feedback loops
  • Engage directly with elite users globally, with 10-15% travel

Benefits

  • Equity in the company
  • Premium health insurance
  • Flexible working environment (on-site or hybrid)
  • Opportunity to shape company culture as one of the first ten engineers
  • Engage in high-stakes projects that have significant real-world impact
Full Job Description
TL;DR - We're building humanity's defense layer for the AI age and are looking for a hacker-minded Full Stack Engineer to ship from day one and own problems end-to-end.If you would have joined Palantir, Nest, or Tesla at the very early start to build an infrastructure from scratch - not just clean datasets - this is that role.

What makes this role special?
  • You'll define how the system is used as the first dedicated full stack engineer.
  • There's no existing interface for this category.
  • Your work is deployed and tested by real users from day one.
  • Operate in high-stake, high-visibility environments you might not talk about, but won't ever forget.
  • Shape product direction and technical roadmap.
  • Gain pre-Series A ownership as one of the first 10 engineers.
What we're looking for
  • Polyglot engineer (JS + Python + Rust/Go preferred) who can quickly pick up new tools when needed.
  • Comfortable deploying and integrating with cloud systems (AWS/GCP) in production environments.
  • 5+ years shipping production systems where reliability matters.
  • Worked with LLMs, vector databases, and prompt pipelines.
  • Operates independently, ships fast, and holds a high bar for output.
  • U.S. Person status required (may involve export-controlled data).
Bonus if you've
  • Built iOS applications.
  • Tinkered with IoT or spatial computing (BLE/WiFi, AR/VR).
  • Obsess over code-quality (SonarQube or similar).
  • Built secure operational dashboards or admin workflows.
  • Optimized database performance under scale.
What you'll do
  • Own user-facing systems and internal tools.
  • Build product systems across web, mobile, and internal tooling.
  • Integrate with backend systems and deploy product-facing services.
  • Leverage LLMs, graph reasoning, and sensor fusion across production systems.
  • Ensure reliability through testing, automation, and tight feedback loops.
  • Work directly with elite users globally (~10-15% travel).
How we select
  • Short application
  • 20-minute intro call
  • Technical deep-dive
  • Show us something you've built that makes you proud
  • References and offer

Final facts.

Base salary up to $220,000, depending on qualifications, experience, and impact. Total compensation includes equity, premium insurance, 401(k), flexible PTO, and other individual benefits.

You'll join us on-site at our HQ in New York City with occasional domestic and global deployments.

Apply. Make history. Build humanity's defense against machines.

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