Digital Align
Portrait of Jean

I'm Jean – a Senior Front-End Architect with 8 years of experience architecting and building high-performance, full-stack web apps.

Formerly full-time at digital agencies, now independent—I partner with agencies and product teams to architect scalable React/Next.js solutions, chase exceptional Lighthouse and Core Web Vitals scores, implement robust TDD workflows, and set up agentic development practices with MCP integrations and agent quality guidelines. Check my calendar for an open slot.

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Services

What I deliver:

Full-stack builds from scratch:

  • Secure authentication and authorization systems
  • CMS integration (Strapi, Payload CMS or your own CMS of choice) with custom content modeling
  • Custom backend logic and secure API integrations (REST, GraphQL)
  • SaaS backend integrations and ORM-based data modeling
  • Production-ready UI from design handoffs—I implement specs; I don't own visual design or Figma files
  • SEO optimization on every page

UX collaboration & UI engineering:

  • Strong product and UX judgment as a developer—not a substitute for a design discipline
  • Pragmatic input on flows, states, and feasibility when you already have design or product in the room
  • Pixel-faithful implementation, accessible patterns, and polished UI in code

Maintenance & troubleshooting:

  • Bug fixes and production issue resolution
  • Modifying and extending existing codebases
  • Migrating legacy applications to modern React based frameworks
  • Migrating package managers, framework versions, and dependency trees

Development process setup:

  • Test-Driven Development (TDD) infrastructure
  • Unit, integration, and end-to-end test suites
  • UI playgrounds with Storybook
  • Visual regression test suite integration with Chromatic

Performance & SEO optimization:

  • Core Web Vitals audits and 90+ Lighthouse score targets
  • Advanced caching strategies (Incremental Static Regeneration, Edge Rendering, HTTP streaming, etc.)
  • SEO metadata, structured data, and sitemap generation
  • Bundle optimization, asset delivery tuning, and animation performance

Agentic development workflows:

  • Adopting agentic coding workflows across teams and codebases
  • MCP server connections for tools, docs, and internal systems
  • Quality guidelines and guardrails for AI agents (reviews, tests, coding standards)

What I don't do:

  • I am not a database administrator. I can handle schema design, code-first migrations, and seeding—but complex database architecture, performance tuning, or troubleshooting database failures are outside my core expertise. If database work is required, it will be at your expense and with the understanding that this is not my primary skillset.
  • I am happy to work with any SaaS backend or unfamiliar stack, provided there is time provisioned for me to get familiar.
  • I am not a UI/UX designer. I don't create Figma designs or own visual identity—I implement handoffs and contribute thoughtfully alongside design and product.

Work

Career highlights

Highlights from my time as a full-time developer at New Media Labs—I now contract independently. On each account I was the dedicated solo front-end within larger agency and client teams; everything described is work I personally delivered. References are in my CV.

While at New Media Labs

  • Stor-Age

    Stor-Age

    Solo front-end · led migration, security & SEO

    While at New Media Labs

    I led the legacy CMS migration to Strapi and Next.js—driving a major performance lift, security hardening, and SEO. As solo developer I coordinated the quote-funnel work and kept continuity when I rotated off the account, including clear handoffs for anyone picking up my work.

    View site →
  • Nedgroup Investments

    Nedgroup Investments

    Solo front-end · led migration & test infrastructure

    While at New Media Labs

    I led the migration of multiple legacy fintech applications (including Staff Support and International Investor), designed and built the full test strategy and suites, and owned ecosystem upkeep—dependencies, linting—and production support for public sites and investment reporting dashboards.

    View case study →
  • SHA Pocket Underwriter

    SHA Pocket Underwriter

    Solo front-end · architecture & dashboard build

    While at New Media Labs

    I architected and built investment-management dashboards in Next.js from design specs—introducing Storybook, animation libraries, and implementation patterns I owned, with pragmatic UX input during build where specs needed refinement. I also handled ongoing platform support: dependencies, upgrades, bug fixes, and complex React rendering issues.

    Santam media article →Pocket Underwriter →
  • Aurecon

    Aurecon

    Solo front-end · led React migration

    While at New Media Labs

    I led the React/Vite migration as solo developer on my areas of the legacy stack—end to end—and worked closely with the design team while implementing the rebrand. I introduced TDD and Storybook, shipped new pages and components, extended CMS integration on a content-heavy platform, and pushed performance and SEO.

    View site →

Documents

Download a copy.

How we work together

Retainer or milestones—I keep the overview short on this page. Step through the Agencies section in the client guide for the full plain-English walkthrough.

Client guide — Agencies

Contact

Let's skip the formalities.

Email

jeancharlgreeff.dev@gmail.com

LinkedIn

View my profile

GitHub

View my repositories

Schedule

Book a 30-min intro call

I work agile — meeting requests are welcome even around contracted hours. Use the booking link to pick a time.

Book a 30-min intro call

Meeting availability

This embed shows when I’m free for meetings—it’s not a working calendar or a booking tool. Use Book a 30-min intro call above to schedule a conversation.

I prefer retainer or milestone-based engagements with agencies. Reach out or book a call—contract details are in the client guide and the agreement we sign.