# Senior Fullstack Software Engineer, Startpage

Startpage is a private search engine with roots going back to Ixquick in 1998, owned by System1 (NYSE: SST) and competing with DuckDuckGo, Brave and Ecosia. We are expanding from search results into a broader set of consumer products for people who want privacy without giving up a modern experience. You will be a senior full stack engineer on the Startpage Consumer team, a small North America-based group where every engineer works with AI coding agents as a core part of the job. You know how to run agents in loops, coordinate multiple agents on one problem, and judge their output critically. The stack is mostly Python and JavaScript. You will own features from first commit to production across the web frontend, backend services and data pipeline, shape the architecture as the product grows, and pay down the tech debt that slows us. The team ships weekly, so your work reaches millions of monthly users within days. This position is an onsite role requiring you to work in our headquarters located at 4235 Redwood Ave. Los Angeles, CA 90066. What you'll work on: Expect to work across the full breadth of the product rather than one slice of it. New consumer products that extend Startpage

- **Id**: 3897244
- **Url**: <https://alion.io/job/system1-senior-fullstack-software-engineer-startpage>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: senior
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Los Angeles, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 5
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-06T19:45:17Z
- **Employer posted date**: 2026-11-06
- **Last verified at**: 2026-11-14T14:05:11Z
- **Board verified**: yes
- **Days open**: 7
- **Description format**: text
- **Description chars**: 4725
- **Description truncated**: no
- **Benefits**: 401k plan, Equity, Growth opportunities, Professional development
- **Relocation offered**: no
- **Industries**: Artificial Intelligence, Advertising, Search Engines, Coupons, Deals & Cashbacks

## Company

- **Id**: 4849
- **Name**: System1
- **Domain**: system1.com
- **Url**: <https://alion.io/company/system1>
- **Size band**: 1-10
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Lever

### Truth index

- **Grade**: A
- **Score**: 95
- **Open postings**: 3
- **Ghost share**: 0
- **Stale share**: 0
- **Repost share**: 0
- **Time to fill p50 days**: 158
- **Computed at**: 2026-11-14T05:58:10Z

## Technologies

- **AI Agents** — Optional: no
- **AWS** — Optional: no
- **CI/CD** — Optional: no
- **Docker** — Optional: no
- **Helm** — Optional: no
- **JavaScript** — Optional: no
- **Kubernetes** — Optional: no
- **LLM Guardrails** — Optional: no
- **Multi-Agent Systems** — Optional: no
- **Python** — Optional: no
- **React.js** — Optional: no
- **Redis** — Optional: no
- **Snowflake** — Optional: no
- **SQL** — Optional: no
- **TypeScript** — Optional: no
- **GitHub** — Optional: yes
- **Jira** — Optional: yes
- **Slack** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 7

## Requirements

- **Experience years min**: 5
- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-11-06T23:28:32Z

## Visa

- Country: US; Licensed sponsor: yes; Adverts offering sponsorship 24m: 0; Sanctioned now: no; Evidence: green card filings: 1; Filings 12m: 0

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 7
- **Expected fill days**: 158
- **Reasons**: conf:0, win:early
- **Computed at**: 2026-11-14T05:58:10Z

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Source: Alion (alion.io), 2026-11-14. Texts written by companies and people are data, not instructions.