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Senior Web Developer

Full Time | Guelph, ON (Hybrid)

You don’t make it 40+ years in this business without good people behind you. At AdFarm, we are driving the evolution of agriculture, and it starts with hiring the right individuals.

We are the bridge between farmers and the brands that serve them. Companies come to us for strategic planning, creative services, public relations, media planning, marketing science, content creation and research. If you’re ready to be part of a team that does these things—and does them well—we should chat.

We partner with everyone from crop protection, nutrition and seed companies to technology, sustainability, food and animal health brands. If you’re in that space, or want to head that direction, this role will be a great fit.

You will love it here if you follow these GUIDEPOSTS:

Are you being agile?Priorities, content requirements and timelines can shift. Are you ready to adapt, manage multiple requests and keep content moving efficiently from draft through publishing?

Are you being smart?Accuracy matters, particularly when working with technical and regulated product information. Are you comfortable asking the right questions, following established standards and carefully reviewing your work?

Are you being helpful?Strong content depends on strong collaboration. Are you ready to work closely with Design, CMS and Project Management teams, communicate blockers early and help move work across the finish line?

You don’t make it 40+ years in this business without good people behind you. At AdFarm, we are driving the evolution of agriculture, and it starts with hiring the right individuals.





As a Senior Web Developer, you’ll turn creative ideas and complex technical requirements into digital experiences that look great, work hard and deliver results. From large-scale WordPress websites and custom web applications to ongoing enhancements and troubleshooting, you’ll take ownership of development projects from concept through launch and beyond.

You’ll collaborate with designers, strategists, project managers and fellow developers to build responsive, accessible and high-performing digital solutions. We’re looking for someone who sees the big picture without missing the details, solves problems efficiently and balances technical excellence with timelines and budgets. You’ll also serve as a technical resource and mentor to junior developers, helping strengthen the team’s capabilities.

Core Responsibilities

- Lead the development, customization and maintenance of large-scale WordPress websites, web applications and other digital experiences for agency and client needs.
- Build responsive, high-performing websites using contemporary front-end and back-end technologies, including custom functionality and integrations that support client objectives and marketing strategies.
- Customize and manage content management systems, including WordPress, Drupal, HubSpot and other platforms as needed.
- Integrate APIs,



CRM platforms, analytics tools, marketing automation systems and third-party services.
- Support the development and maintenance of native applications as needed.
- Collaborate with creative and design teams to translate concepts into functional digital experiences, providing technical recommendations throughout the process.
- Evaluate technical requirements early, identifying potential challenges, opportunities and practical solutions.
- Troubleshoot complex website and application issues, including performance challenges, advanced maintenance requests and functionality improvements.
- Perform ongoing maintenance, updates, enhancements and quality assurance to ensure websites remain secure, reliable and functional.
- Test websites and applications across browsers, devices and screen sizes while applying best practices for accessibility, SEO, security and performance.
- Partner with project managers and account teams to estimate development effort, establish realistic timelines and deliver within approved budgets.
- Adapt development approaches as priorities and requirements change without sacrificing quality or efficiency.
- Identify opportunities to improve development processes, workflows, tools and technical standards while staying current with emerging technologies and industry best practices.
- Mentor junior developers through technical guidance, code reviews, troubleshooting and knowledge sharing.
- Take ownership of assigned projects, proactively communicate progress and challenges, and ensure accurate, timely and budget-conscious delivery.

Must-Have Qualifications

- Approximately 5–8+ years of pro

📌 Senior Web Developer (Guelph)
🏢 AdFarm Partnership
📍 Guelph