Senior Full Stack Software Engineer

System1

Full-stack Senior Software Developer working alongside a team to enhance Startpage's privacy-preserving search engine. Collaborating on features, managing technical debt, and maintaining coding quality.

Posted 7/23/2026full-timeSeattle • Washington • 🇺🇸 United StatesSenior💰 $133,000 - $170,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and operating production web services at scale, with a strong focus on architectural decisions, automated testing, and modern CI/CD practices. Proficient in JavaScript, Python, and containerization technologies, ensuring high-quality deployments and effective collaboration with cross-functional teams.

Highest-signal resume keywords

5+ Years Software Development ExperienceJavaScript (TypeScript/Node.js/React)Python Backend DevelopmentKubernetes and Helm ExperienceAutomated Testing Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software DevelopmentHTTP UnderstandingREST API ArchitectureAutomated TestingContainerizationCloud Services (AWS)Caching Strategies (Redis)CI/CD ToolingMonitoring ServicesAI Coding Tools

Soft Skills

Excellent Communication Skills

Tools & Technologies

KubernetesHelmDockerArgoCDGitHub ActionsNew RelicDatadogCloudwatch

Industry Keywords

SearchAd TechBrowser-Facing Privacy Products

Tech Stack

Tools & technologies

AWSCloudDNSDockerJavaScriptKubernetesNode.jsPythonReactRedisTypeScript

About the role

Key responsibilities & impact

Work alongside existing team to build out new features for our private search engine
Help shape architectural decisions and proactively tackle tech debt, bugs, and other engineering tasks
Oversee work from tickets to production deployments and monitoring
Collaborate with product team, balancing quality with output volume and complexity
Participate in emergency on-call rotation

Requirements

What you’ll need

Excellent communications skills, strong command of the English language
5+ years of professional software development experience building and operating production web services at scale.
Deep understanding of HTTP and all of its moving parts: front-ends, back-ends, serving infrastructure, DNS, etc.
Good understanding of REST API architectures, both writing them and consuming them.
Experience with JavaScript (TypeScript/Node.js/React), modern CSS, and HTML.
Experience with Python—our backend services are predominantly written in Python.
Hands-on experience with Kubernetes and Helm in a multi-region production environment and a good working knowledge of K8s concepts.
Proficient with Docker and containerized service development.
Experience with Redis and/or similar caching strategies in latency-sensitive systems.
Comfortable with modern CI/CD tooling (ArgoCD, GitHub Actions).
Experience with monitoring and instrumenting services such as New Relic, Datadog, Cloudwatch, etc.
Strong automated testing experience and discipline (unit, integration, and end-to-end tests).
Experience with AI coding tools and a good understanding of when it is appropriate to move quickly with these tools versus when it is important for human oversight.
Experience with AWS or other modern cloud provider(s) for serving well-architected, scalable web applications.
Any background or previous experience in search, ad tech, or browser-facing privacy products would be an asset but not a must.

Benefits

Comp & perks

Competitive salary + bonus + equity
Generous PTO + 11 company holidays
Open sick time
100% covered Medical, Dental, Vision for employees
401k with match
Health & Dependent Care Flex Spending Account
Paid professional development
Leadership & growth opportunities
Virtual company and team building events