Senior Web Developer

AdFarm Partnership; Guelph; Hybrid; CAD 85,000 - 115,000; Full time

Benefits offered by this job

Health benefits

Dental benefits

Vision benefits

RRSP contributions

Health Spending Account

Cell phone reimbursements

Hybrid work environment

Job summary

AdFarm Partnership in Guelph, ON seeks a Senior Web Developer to transform creative ideas into robust digital experiences. You will own large WordPress sites and custom web apps, delivering scalable solutions from concept through launch and beyond.

You will collaborate with design and project teams, ensuring accessible, high-performing results while mentoring juniors and balancing timelines and budgets.

Qualifications

• 5–8+ years of professional web development experience.
• Extensive WordPress development with custom themes/plugins.
• Strong front-end skills with HTML, CSS, JS and modern frameworks.
• Back-end proficiency in PHP; knowledge of Node.js/Python is a plus.
• Experience with relational databases and API integrations.
• Focus on responsive, accessible, high-performance websites.
• Experience with Android/iOS development is desirable.
• Proven ability to mentor junior developers and communicate clearly.

Responsibilities

• Lead development of large-scale WordPress sites and web apps.
• Build responsive, fast websites with front-end/back-end tech.
• Manage content systems like WordPress, Drupal and HubSpot.
• Integrate APIs, CRMs, analytics and marketing platforms.
• Support native app development when needed.
• Collaborate with design and project teams to translate concepts.
• Identify challenges early and propose practical solutions.
• Troubleshoot complex issues and ensure QA and security.
• Mentor junior developers and review code for quality.
• Estimate effort with project managers and meet budgets.
• Maintain high standards while adapting to changing priorities.
• Stay current with tech and industry best practices.

Skills

WordPress development

PHP backend

JavaScript frameworks (React/Vue/Angu)

APIs & integrations

Responsive design

SEO & accessibility

Mentoring junior developers

Git/version control

Cross-team collaboration

Mobile development knowledge

Education

Bachelor's degree in Computer Science

Tools

WordPress

Drupal

HubSpot

Git

REST APIs

MySQL

React

Job description

The 2027 AgIntel Index Report is here. Get Your Copy

Home / Careers / Senior Web Developer

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 modern 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 professional web development experience, preferably in a marketing agency or client-service environment.
• Extensive experience developing, launching and maintaining large-scale WordPress websites, including custom themes, plugins and advanced functionality.
• Strong front-end development skills in HTML, CSS and JavaScript, including modern frameworks such as React, Vue or Angular.
• Proficiency in back-end development, particularly PHP, with working knowledge of Node.js, Python or similar technologies.
• Experience with relational databases, including MySQL or comparable technologies.
• Experience developing and integrating APIs, third-party services and marketing technology platforms.
• Strong understanding of responsive design, cross-browser compatibility, website accessibility and performance optimization.
• Experience with native Android and iOS development.
• Proficiency with version control systems such as Git and modern development, testing and deployment workflows.
• Proven ability to diagnose complex technical issues and develop practical, sustainable solutions.
• Ability to translate design concepts and business requirements into well-structured, functional digital solutions.
• Strong organizational skills, attention to detail and the ability to manage multiple projects, priorities and deadlines.
• Clear communication skills, including the ability to explain technical concepts to technical and nontechnical audiences.
• Experience providing technical guidance, code reviews or mentorship to junior developers.
• Ability to work independently, take ownership of deliverables and collaborate effectively across teams.
• A degree in computer science, web development or a related field is preferred, or equivalent professional experience.

In Addition, This Role Requires:

• A curious, solutions-oriented mindset and the ability to look beyond the obvious answer.
• The ability to balance clean, scalable development with client needs, budgets and deadlines.
• Confidence in making technical recommendations while remaining open to different approaches.
• Flexibility to move between large-scale builds, complex troubleshooting and smaller maintenance requests.
• An appreciation for good design and how technical decisions impact user experience.
• A proactive approach to identifying risks, communicating challenges and resolving issues.
• Genuine curiosity about agriculture and a willingness to learn about our clients’ industries, audiences and challenges.
• A collaborative, accountable and service-oriented approach to working with clients and fellow AdFarmers.
• A commitment to AdFarm’s values in all professional activities.

AdFarm offers eligible employees health, dental and vision benefits, automatic annual 3% RRSP contributions, a Health Spending Account, health and cell phone reimbursements, and a hybrid working environment with a wonderful group of top-talent individuals.

Our culture is paramount at AdFarm, so we hire according to values, mutual respect and the ability to work collaboratively within a high-performing team.

Let's talk.