Senior Software Engineer, Investigations

About the role

SpyCloud is on a mission to make the internet a safer place by disrupting the criminal underground. We’re looking for a Senior Software Engineer to join the team behind Investigations, the part of the SpyCloud Console that analysts use to run down a lead. They start with a single identifier, usually an email address or a username, and we resolve it into the other personas behind it and the breach and malware records those personas appear in. The corpus is billions of recaptured records, and analysts expect an answer in seconds.

Our Stack

• Front End: React, Vite, TypeScript
• Back end: Golang, REST APIs
• AI: Python, AWS Bedrock, LangGraph
• Frameworks: Vite, MaterialUI, Gin
• Data: PostgreSQL, Databricks
• Infrastructure: AWS, Docker, Terraform

What You'll Do

• Feature Development:
  • Take work from ambiguous business intent through to a shipped, operated service, directing AI agents through planning, implementation, and test generation, and staying accountable for the result.
  • Own production outcomes for Investigations: reliability, performance, and cost.
  • Troubleshoot customer-reported issues, including the ones that turn out to be a query plan change.
• Technical Leadership:
  • Make and defend design decisions on a module you will know better than anyone outside the team.
  • Set technical direction for Investigations, including the specs, context, and guardrails that decide whether agent-generated work is any good.
  • Own verification when generation is cheap. A plan, its implementation, and its tests can all be drafted in an afternoon, so the review gates that keep customer data trustworthy are a design problem, and yours to solve.
  • Raise the bar on testing, observability, and the interfaces between our module and the Console platform it deploys into.
• Team Collaboration and Improvement:
  • Adopt existing team practices and recommend improvements as needed.
  • Mentor engineers on the team, including how to work with agents effectively, and help build a culture of continuous learning.
  • Improve how the team builds, including the AI tooling and evaluation harnesses we use to move faster without shipping regressions.

Requirements

• Professional Experience:
  • At least 5 years delivering production software, including work other teams depended on, and the judgment to know a design is wrong before it's expensive.
• Technical Proficiency:
  • Depth in Go or TypeScript, and quick to pick up the other.
  • Designs, versions, and evolves RESTful APIs other teams depend on.
  • Fluent with PostgreSQL and with large analytical datasets.
  • Strong fundamentals in data structures, algorithms, and system design.
• Cloud Experience:
  • Production experience with AWS Lambda, API Gateway, ECS, and EC2.
• Communication:
  • Sharp writing. Specs and design docs are the primary artifact, for humans and agents both.
• Engineering Practices:
  • Full lifecycle fluency: code review, source control, build and deploy. We use GitHub, GitHub Actions, and AWS CodeBuild.
  • Owns testing, CI/CD, observability, and on-call for what you ship.
• How You Work:
  • Ships production code with agentic tools, and can say where they failed and what changed.
  • Decomposes ambiguous problems into work an agent can execute. The spec sets the ceiling.
  • Reads unfamiliar code fast and catches the plausible-but-wrong.
  • Treats AI output as a draft, not an answer.
  • Digs into unfamiliar parts of a system rather than routing around them.
  • Learns deliberately, and can point to something picked up recently.

Nice to Have

• Built an internal tool or agent workflow that other engineers adopted.
• Built evals, golden datasets, or regression checks for LLM output, whether a product feature or code generation.
• Adopted an AI-native delivery method such as spec-driven development or AWS's AI-DLC, including the agent rules that make it repeatable.
• Large-scale data processing with Spark or Databricks.
• Python for agent work, such as LangGraph or Bedrock.
• Background in cybersecurity or identity threat protection.

Pay

Base Salary Range: $131,000 – $170,000

Benefits + Perks (U.S.-Based)

• 401(k) with Employer Contribution
• Health, Vision, and Dental Insurance
• Health Savings Account (HSA) available with Employer Contribution
• Employer Paid Life, Short-term, and Long-term Disability Insurance
• Generous PTO Plan and 16 paid holidays per year

Benefits + Perks (U.K.-Based)

• Retirement Savings Plan with Employer Contribution
• Employer Provided Private Health Insurance and Healthcare Cashplan
• Employer Paid Life Insurance, Income Replacement, and Critical Illness Protection
• Employee Assistance Program
• 25 days annual accrued holiday plus 8 paid bank holidays and a paid company shutdown during winter holidays