System1 (NYSE: SST) is an omnichannel customer acquisition marketing platform powered by AI and machine learning. Our proprietary Responsive Acquisition Marketing Platform (RAMP) uses data science and real-time bidding to match high-intent consumers with advertisers at scale. We operate a portfolio of consumer-facing brands across search, shopping, and travel — including Startpage, MapQuest, and CouponFollow — and build the apps, search engines, and online publications that power them. Startpage (part of System1) is the world's most private search engine. We deliver high-quality search results through a privacy-preserving proxy layer that strips identifying information before queries leave our infrastructure. Users get the search experience they expect without being tracked, profiled, or targeted. Startpage is looking for a full-stack Senior Software Developer to work alongside our existing team. This is a full-time, on-site position with the expectation of a 40-hour work week from our Bellevue, WA office. At a high level, Startpage engineers work with our product team to build out new features on our roadmap, primarily for our private search engine, our flagship product. We also help to shape architectural decisions, while proactively tackling tech debt, bugs, and other engineering tasks. All developers at Startpage work with a wide variety of languages, tools, and technologies across all parts of the stack. Generally, day-to-day work across our stack includes mostly Python and JavaScript. We are a small but fast-moving, adaptable team, and we are rapidly iterating our products to meet the ever-changing demands of the open internet in the world of AI. The team is distributed across time zones in North America and Europe. While we don’t maintain a strict schedule, everyone on the team overlaps their days for 4-5 hours so we can all work together for a portion of our day. Ideal candidates for this role are self-starters who take initiative and learn things quickly, are flexible in dealing with rapidly evolving technical requirements, and have a good eye for balancing quality, output volume, and complexity. Startpage developers are expected to oversee their work from tickets to production deployments and monitoring, and should feel confident and comfortable releasing changes to a highly-trafficked, internationally distributed web product multiple times per week. Given Startpage is a privacy-focused product, previous experience working on a privacy-focused web product would be an asset, but is not a hard requirement. Similarly, our developers are expected to have a high level of attention to detail in order to maintain the privacy of our users, which we take very seriously. Engineering at Startpage means working on systems where privacy is a real architectural constraint, not a marketing line. This role also requires participation in our emergency on-call rotation. This position is a hybrid role requiring you to work out of our Bellevue, WA office located at 10800 NE 8th Street Suite 200 Bellevue, WA 98004.