Senior Full Stack Drupal Developer

Senior Full Stack Developer (Drupal) – Overview

Zen Source is seeking a seasoned Senior Full Stack Developer (Drupal) to play a critical role in building, enhancing, and scaling cloud‑native, content‑driven solutions for our clients. This individual will be a hands‑on senior contributor, providing immediate impact across Drupal back‑end development while supporting modern cloud, serverless, and AI‑enabled initiatives on our roadmap.

This role is ideal for a highly capable engineer who is comfortable owning technical solutions end‑to‑end and helping establish best practices, as the team continues to grow. The Senior Engineer will collaborate closely with solution architects, product leaders, and clients, while setting a strong technical foundation ahead of future junior‑level hires.

• High‑quality, production‑ready Drupal solutions delivered efficiently
• Successful support and enhancement of Drupal 10–11 platforms
• Contribution to serverless and AI‑enabled features aligned to the product roadmap
• Strong collaboration and technical leadership within a growing engineering team
• Scalable, secure, and maintainable architecture aligned with cloud best practices

Reports to:

SVP, product

• Drupal & Full Stack Development
  • Design, develop, and maintain robust Drupal back‑end solutions, with a focus on performance, scalability, and security, accessibility (WCAG AA), and Core Web Vitals.
  • Work across the full stack as needed, ensuring smooth integration between front‑end experiences and back‑end systems.
  • Architect integrations between Drupal and CRM/marketing platforms (e.g., Salesforce, Hub Spot, Constant Contact) to support automated lead capture and marketing workflows.
  • Lead development efforts on Drupal 10–11 projects, including custom modules, integrations, and migrations.
  • Troubleshoot complex issues across environments and provide production support when required, including supporting other internal teams (e.g., the support department) with issue resolution and architecture guidance.
• Cloud & Serverless Technologies
  • Contribute to serverless architectures supporting platform and product innovation.
  • Develop and maintain Python‑based services and AWS Lambda functions.
  • Collaborate on cloud‑native designs leveraging AWS services at a foundational level.
  • Ensure systems are secure, scalable, and cost‑efficient.
• AI‑Enabled Development
  • Support and extend AI‑related features and integrations across applications.
  • Collaborate with cross‑functional teams to implement AI‑driven functionality into client and platform solutions.
  • Apply experience with AI development to practical, production‑ready use cases.
• Technical Leadership & Collaboration
  • Serve as a senior technical resource and mentor to future junior developers, providing ad‑hoc technical guidance and support across the broader engineering org and partner‑agency developers.
  • Establish and follow engineering best practices, documentation, and coding standards.
  • Partner with architects, product managers, and stakeholders to translate business needs into technical solutions.
  • Lead client‑facing pitch meetings and technical demos, communicating platform value and building stakeholder confidence.
  • Participate in code reviews, architecture discussions, and continuous improvement efforts.

• Senior‑level problem solving and technical ownership
• Strong architectural thinking and attention to quality
• Ability to balance speed with long‑term maintainability
• Clear communication with both technical…