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Website Developer/ 2 hours ago

Genestack Ltd
Attractive
Application ends: 2026-10-04

Quick Summary

Genestack is hiring a remote freelance Website Developer in Spain on a retainer basis (approximately 10 hours per month, plus additional hours for larger projects). The role entails taking long-term technical ownership of genestack.com, which is built on a MODX CMS hosted on AWS. Key responsibilities include site maintenance, refactoring, deploying bug fixes and upgrades, technical SEO, and building responsive UI components in collaboration with a designer. Requirements include proven experience building production websites, strong HTML/CSS/JavaScript skills, hands-on experience with PHP-based CMS platforms like MODX, Git workflows, CRM form integrations (such as Salesforce), practical use of AI-assisted development tools, and fluent English.

At Genestack, we address complex computational and scientific challenges in bioinformatics, developing software tools that accelerate discovery and advance precision medicine, drug development, and bioinformatics research.

Our platform is trusted by leading pharmaceutical, agricultural, consumer goods companies, and academic institutions.

We are seeking a proactive Website Developer to assume long-term technical ownership of our official website, genestack.com.

This is a freelance consulting engagement, not a full-time position. The expected ongoing workload is approximately 10 hours per month on a retainer basis, with additional hours for larger website projects, redesigns, or significant technical improvements agreed upon separately.

You will manage the technical aspects of our web presence, collaborating closely with our designer and internal team to make pragmatic and durable technical decisions. We are looking for a partner who communicates proactively, deeply understands the site, and can provide long-term technical guidance beyond individual task delivery.

In this role, you will:

  • Build, refactor, and maintain genestack.com on our current stack (MODX CMS hosted on AWS), ensuring content is easily manageable by non-technical team members.
  • Own the technical health of the website, including maintenance, bug fixes, upgrades, deployment, hosting, performance, and stability.
  • Partner with our designer to implement clean, responsive, and accessible pages and reusable UI components.
  • Monitor website performance and analytics, support technical SEO initiatives, and recommend relevant improvements.
  • Maintain cookie and consent tooling, such as Enzuzo, in alignment with business requirements.
  • Proactively identify technical risks and propose practical, durable solutions.

We would like you to have:

  • Proven experience building and maintaining production websites over time.
  • Strong HTML, CSS, and JavaScript skills, with expertise in responsive and accessible web development.
  • Hands-on experience with PHP-based CMS platforms comparable to MODX.
  • Experience with Git, deployment workflows, hosting, and basic performance monitoring.
  • Good understanding of website security, backups, technical SEO, and Core Web Vitals.
  • Ability to build and maintain form integrations, especially with CRM platforms like Salesforce.
  • Strong practical use of modern AI-assisted development tools, combined with sound engineering judgment.
  • Clear, proactive communication and experience working directly with designers and non-technical stakeholders.
  • Fluent English.

It would be nice if you have:

  • Direct experience with MODX.
  • Experience with AWS.
  • Familiarity with website analytics and cookie/consent management tools.

Why work with us:

  • Take real ownership of the technical side of an established company website.
  • Engage in a long-term partnership rather than moving between isolated projects.
  • Provide direct input into technical decisions and the website's evolution.
  • Work closely with a small, collaborative team that values pragmatic solutions and clear communication.
  • Contribute to the web presence of a company addressing meaningful challenges in the life sciences.

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Genestack Ltd

Genestack Ltd

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