Full-stack Software Engineer Product

Full-stack Software Engineer Product Overview

Apollo Research is seeking a Full-stack Software Engineer to join our team in London or San Francisco. This role involves working on our innovative coding agent security product, Watcher, which monitors billions of agent tokens monthly across various engineering teams. As a product engineer, you will be responsible for developing and scaling Watcher, handling both backend and frontend components.

Key Responsibilities

• Develop and ship product features from end to end, including agent-side hooks, ingestion pipelines, monitoring dashboards, and integrations.
• Engage with users to gather requirements, scope work, make technical decisions, and iterate based on user feedback.
• Create integrations with various coding agents and enhance the monitoring capabilities of the product.
• Design and maintain backend systems to process large volumes of agent logs in real time, ensuring reliability and observability.
• Architect data models and storage solutions that accommodate high-throughput writes and complex analytical queries.
• Collaborate with the AI Security & Control Engineer to ensure the product is safe for deployment, focusing on tenant isolation and data security.
• Build and maintain integrations with enterprise security systems, supporting various deployment models.
• Conduct customer interactions to troubleshoot issues and incorporate feedback into the product roadmap.

Job Requirements

• A minimum of 4 years of experience in building production software, with a proven track record of shipping and maintaining reliable systems.
• Strong full-stack development skills, particularly in backend technologies (APIs, data pipelines, databases) and frontend development (modern web UI).
• Demonstrated ability to take ownership of significant product features and make informed decisions with limited information.
• Experience using tools like Claude Code, Codex, or Cursor, or building similar agent tooling.
• Comfortable working in a fast-paced startup environment with changing priorities and ambiguity.
• Ability to translate user needs into actionable product designs and prioritize features effectively.

Benefits

• Competitive salary with potential for future increases.
• Equity options in the company.
• Flexible working hours and unlimited vacation policy.
• Comprehensive health, dental, and vision insurance.
• Retirement savings plan with employer matching.
• Paid parental leave of up to 6 months.
• Provision of meals and snacks during workdays.
• Annual professional development budget of $1,000.
• Support for relocation and visa fees if applicable.

This is an onsite position, and we offer visa sponsorship in both the UK and US, although it is not guaranteed for every role or candidate. If you receive an offer, we will assist you in finding the appropriate visa route.

How to Apply

Please complete the application form and submit your CV. A cover letter is not required, but you may include links to relevant work samples. Our interview process includes a screening interview, a take-home test, technical interviews, and a final interview with the CEO. We encourage applicants to prepare by building simple monitors for coding agents.

Degree Requirement: Not Specified

Visa Sponsorship Promising