リテーナー開発エンゲージメント

A retainer gives you a fixed monthly block of engineering hours with no per-project sales cycle. You message your engineer in Slack, and work starts within 24 hours. A project-based engagement scopes a defined deliverable, like a site rebuild, with a fixed price and timeline. Retainers work best when you need ongoing performance work, SEO fixes, and ad-hoc feature development across months. Projects work best when you have a clear spec and a launch date. Many clients start with a project engagement for a rebuild and then shift to a Tier 1 or Tier 2 retainer for ongoing optimization. The key difference is speed of response. On a retainer, there is no SOW, no procurement review, and no 3-week kickoff. Your engineer already knows your codebase, your analytics, and your priorities.

Tier 1 costs $3K per month and includes 8 hours of senior engineering time plus a monthly Lighthouse and Core Web Vitals audit. This suits teams that need a safety net for performance regressions and occasional SEO fixes. Tier 2 costs $6K per month and includes 20 hours plus a weekly 30-minute sprint call. You get enough hours for consistent feature work alongside performance and SEO. Tier 3 costs $12K per month and includes 40 hours, weekly sprint reviews, and a quarterly roadmap planning session. This tier acts like a fractional senior engineer embedded in your team. All tiers include a named engineer, 24-hour Slack response SLA, monthly GA4 and Search Console reviews, and a 30-day exit clause.

WP-Engine and Wix Premium plans keep your infrastructure running. They handle uptime, SSL certificates, CDN caching, and plugin updates. They do not write code, audit your Core Web Vitals, restructure your internal linking, or plan a platform migration. Those are engineering problems, not hosting problems. A Social Animal retainer includes senior engineering hours where your engineer writes and deploys code to your codebase on Vercel. You own every line. We ship performance fixes, SEO architecture changes, schema markup, accessibility patches, and new features. Our monthly audits use Lighthouse, PageSpeed Insights field data, GA4, and Search Console to find problems before they cost you traffic. If you're comparing costs, WP-Engine premium plans run $60-$230 per month for hosting. Our Tier 1 retainer at $3K per month includes actual engineering work on top of that.

Marketplaces like Toptal, Andela, and Upwork connect you with individual contractors. You handle onboarding, code review, architecture decisions, and quality control yourself. If the contractor leaves, you start over. A Social Animal retainer gives you a named senior engineer backed by a team. Your engineer follows our CI/CD pipeline, writes code that passes our review standards, and delivers monthly audits using our established framework. If your engineer takes vacation, a qualified teammate covers your Slack channel within the same 24-hour SLA. Toptal charges $60-$200 per hour for senior developers. Andela starts around $40 per hour. Our Tier 1 retainer works out to roughly $375 per hour, but that rate includes the audit framework, performance tooling, SEO architecture expertise, and zero management overhead on your side.

You give 30 days notice and that is it. There is no penalty, no early termination fee, and no retention tricks. During the final 30 days, your engineer completes in-progress work, documents open items, and transfers any credentials or access. You own the codebase, the deployment pipeline, and all audit reports we generated during the engagement. We push the final code to your repository and hand over Vercel project ownership. Most clients who pause a retainer come back within 3-6 months because the same performance issues resurface once continuous engineering stops. But that is your decision to make, not ours.

Yes, you own 100% of the code from day one. Every commit goes to your Git repository. Every deployment runs through your Vercel account. We do not use proprietary frameworks, locked themes, or code that requires our involvement to maintain. If you leave after month one, you have a working codebase, a documented deployment pipeline, and full access to everything we built. This is a core difference from agencies that deploy on their own infrastructure or use proprietary CMS platforms that lock you in. Your code is your code. We write it, review it, deploy it, and hand it over cleanly when the engagement ends.

We deploy on Vercel using Next.js or Astro depending on your site's needs. Next.js handles dynamic, app-like sites with authentication, personalization, or complex data fetching. Astro handles content-heavy marketing sites, blogs, and documentation where shipping zero JavaScript by default produces sub-1-second page loads. Both frameworks support incremental static regeneration, edge functions, and image optimization out of the box. Our CI/CD pipeline runs on GitHub with preview deployments for every pull request. You review changes on a staging URL before anything touches production. Rollbacks take under 60 seconds. If you are currently on WordPress, Shopify, or another platform, migration planning is included in your retainer hours and we build a phased cutover plan.

Your named engineer joins your Slack workspace and begins the codebase audit on day one after contract signature. The audit and baseline report complete by end of week one. Your first sprint of actual engineering work starts in week two. By week three, you have shipped code in production. This is faster than any marketplace or traditional agency because we skip the SOW negotiation, the multi-round interview process, and the discovery phase that adds 4-8 weeks to most engagements. You are paying for an engineer who already knows performance engineering, SEO architecture, and the Vercel deployment stack. We do not need to train them on your problem domain. We need to learn your codebase, and that takes five business days.