Senior Fullstack Software Engineer, Startpage

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Senior Fullstack Software Engineer, Startpage in USA new

System1
Full time
Email

USA
11/07/2026
Report

Los Angeles, CA

Responsibilities

Design, build, test, and ship features end to end from APIs and data models through to the UI.
Use agentic coding tools with evaluations, guardrails, multi-agent workflows, and critical code review.
Turn product prototypes into production code and provide implementation feedback.
Own production services on Kubernetes, including deployments, monitoring, on-call responsibilities, latency, and uptime targets.
Drive architecture decisions and technical-debt reduction.
Protect user privacy through minimal tracking, data retention, and third-party query-sharing practices.
Instrument features, analyze results in Sigma and Snowflake, and propose data-driven iterations.
Work with external partners and agencies to keep web and app experiences consistent.
Write clear tickets, pull requests, and design notes, and review teammates’ work.

Requirements

5+ years of professional web development experience owning frontend and backend systems in production.
Daily hands-on experience with agentic coding tools, including agent loops, evaluations, and multi-agent workflows.
Strong Python plus JavaScript or TypeScript, React, modern CSS, and HTML skills.
Hands-on experience with Docker, Kubernetes, Helm, and Redis.
Experience with CI/CD, monitoring tools, AWS or a comparable cloud platform, and production on-call responsibilities.
Solid automated testing practices and SQL fluency.
Ability to measure feature performance and understand the impact of latency regressions.
Clear written communication with distributed teams and outside vendors.

Benefits

Small North America-based team with weekly releases.
Distributed-team work with Slack for day-to-day communication.
Product development begins with clickable prototypes, with engineers expected to challenge and refine them.
Data-driven development with instrumentation and success metrics for every feature.
Jira for tracking, GitHub for code, and Sigma and Snowflake for analytics.

System1

System1 builds an AI-driven customer acquisition and marketing platform and operates consumer brands across search, shopping, and travel, including the privacy-focused Startpage search engine. It delivers high-intent traffic to advertising partners and monetizes through advertising and performanc...

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