Senior Technical Webmaster / Frontend Marketing Engineer (Astro/Sanity CMS)
Braintrust · United States
- Hybrid
- Full-time
- $80,000 / year
- United States
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Senior Technical Webmaster / Frontend Marketing Engineer (Astro/Sanity CMS)
Braintrust · United States
Alex Rivera
Hiring Manager · h•••••@app.usebraintrust.com
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Subject: Interested in the Senior Technical Webmaster / Frontend Marketing Engineer (Astro/Sanity CMS) role at Braintrust
Hi Alex — I came across the Senior Technical Webmaster / Frontend Marketing Engineer (Astro/Sanity CMS) opening and wanted to reach out directly. I've spent the last few years doing exactly this kind of work, and Braintrust stood out because…
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Not recommended alone — most applicants never hear back.
Job highlights
- Manage and optimize a modern headless website architecture.
- Execute A/B tests and build high-converting landing pages.
- Integrate website forms with Salesforce CRM.
- Ensure AI and SEO best practices are implemented.
- Work independently on technical marketing tasks.
About the role
About Cartelligent
Cartelligent is California premier car buying and leasing service. We take the hassle, negotiation, and paperwork out of the car buying process for busy, high-income professionals. We are currently modernizing our marketing stack to heavily integrate AI, automation, and advanced search optimization.The Role
We are looking for a "Senior Technical Doer." We recently partnered with an agency to migrate our legacy WordPress site to a modern, AI-native headless architecture (Vercel / Astro / Sanity CMS).We are now transitioning away from that agency and need an independent, highly skilled technical contractor to take over the day-to-day maintenance, optimization, and expansion of this new site. We already have a dedicated SEO strategist and Google Ads manager; your role is to be the hands-on technical executor who keeps the code healthy and builds the infrastructure they need to succeed.
You will not need to build a marketing team or dictate high-level strategy. We need someone who can jump into the codebase, execute A/B tests, build landing pages, and translate "AI website terminology" into deployed code.
Key Responsibilities
- Headless CMS Management: Act as the primary technical owner of our Sanity CMS and Vercel hosting environment.
- Landing Page & A/B Testing Execution: Build custom, high-converting landing pages within Sanity to support our Google Ads campaigns, and implement rapid A/B testing frameworks.
- Marketing Ops Integration: Ensure all website lead forms maintain flawless data syncing with our Salesforce CRM, including preserving GCLID tracking parameters.
- Client Enablement: Ensure the Sanity backend is configured in a way that allows our internal, non-technical team members to easily update basic text and images.
Requirements
- Must-Have Tech Stack: Deep, hands-on engineering experience with Astro, Sanity CMS, and Vercel. (If you do not have production experience with Astro and Sanity, please do not apply).
- Self-Motivated "Doer": You require minimal hand-holding. You are comfortable taking a strategic request (e.g., "We need to test a new hero image for EV leases") and independently deploying it.
- AI & SEO Fluency: You understand modern AI website terminology (LLM scraping, structured data, GEO) and know how to code a site so that AI bots prefer reading it.
- Marketing Context: You understand how front-end code impacts marketing (page speed, Google Ads tracking, conversion rate optimization).
Key skills/competency
- Astro
- Sanity CMS
- Vercel
- Headless CMS
- Frontend Engineering
- Marketing Operations
- A/B Testing
- SEO
- Webmaster
- Technical Implementation
Skills & topics
- Senior Technical Webmaster
- Frontend Engineer
- Astro
- Sanity CMS
- Vercel
- Headless CMS
- Marketing Operations
- A/B Testing
- SEO
- Webmaster
How to get hired
- Tailor your resume: Highlight experience with Astro, Sanity CMS, and Vercel. Emphasize your 'doer' mentality and marketing context understanding.
- Craft a strong cover letter: Showcase your ability to translate strategic requests into deployed code and your fluency in AI website terminology.
- Prepare for technical questions: Be ready to discuss your experience with headless CMS, A/B testing, and marketing operations integrations like Salesforce.
- Demonstrate self-motivation: Provide examples of projects where you took initiative and independently delivered results with minimal supervision.
- Highlight AI/SEO knowledge: Be prepared to explain how your front-end code implementation supports AI bots and SEO strategies.
Technical preparation
Master Astro framework basics and advanced features.,Become proficient with Sanity CMS content modeling.,Understand Vercel deployment and hosting best practices.,Practice implementing GCLID tracking in forms.
Behavioral questions
Describe a complex technical challenge you solved independently.,How do you translate strategic marketing goals into code?,Give an example of optimizing a site for SEO/AI.,How do you manage your time on a fractional role?
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Frequently asked questions
- What are the core technologies for this Senior Technical Webmaster role at Cartelligent?
- The core technologies for this role are Astro, Sanity CMS, and Vercel. Production experience with Astro and Sanity CMS is a strict requirement for this position.
- Is this a full-time or part-time role at Cartelligent?
- This is a fractional/freelance contractor engagement, expected to be between 10-15 hours per week, with potential for a longer-term engagement.
- What is expected of a 'Senior Technical Doer' at Cartelligent?
- A 'Senior Technical Doer' is expected to be a self-motivated individual who can independently take a strategic request, such as testing a new hero image, and execute the necessary technical implementation, including coding and deployment.
- Will I be responsible for marketing strategy at Cartelligent?
- No, you will not be building a marketing team or dictating high-level strategy. Your role is to be the hands-on technical executor, keeping the code healthy and building the infrastructure needed by the SEO strategist and Google Ads manager.
- How does this role relate to AI and SEO?
- You will need AI and SEO fluency, understanding modern AI website terminology and how to code a site to be preferred by AI bots. Your work will directly support SEO and marketing automation efforts.
- What is the main goal of the landing page and A/B testing execution at Cartelligent?
- The goal is to build custom, high-converting landing pages within Sanity CMS to support Google Ads campaigns and to implement rapid A/B testing frameworks for continuous optimization.
- How is data syncing handled in this role at Cartelligent?
- You will ensure that all website lead forms maintain flawless data syncing with the Salesforce CRM, crucially including the preservation of GCLID tracking parameters for marketing attribution.
- What client enablement is expected in the Sanity CMS?
- You are expected to configure the Sanity backend so that non-technical internal team members can easily update basic text and images on the website.
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