Senior Full Stack Developer in Markham, Ontario at telMAX

SENIOR FULL STACK DEVELOPER

About telMAX Inc.:

Based in York Region, telMAX is a private equity-backed all fibre digital infrastructure platform that provides a 21st century alternative to traditional telecom networks. Recognized for four consecutive years as Canada’s Fastest ISP with an industry-leading net promoter score of over fifty, telMAX is continuing its rapid growth plan to bring its all-fibre network to residential and business customers across Southern Ontario.

Your Position & How You Will Contribute:

Reporting to the Head of Network & Systems, the Senior Full Stack Developer owns the internal platform that connects our network to everything else. This is not a greenfield project — there is a real codebase, real integrations, and real dependencies that the business runs on every day. Your job is to make it better: cleaner, faster, more reliable, and easier for the team to build on. The platform touches nearly every part of the operation: customer communications, billing automation, NOC workflows, provisioning, field ops tooling, and reporting. You will be the most senior technical voice on a small, capable team, working directly alongside contractors and setting the standard for how the work is done.

Responsibilities & Key Duties:

• Platform Ownership: Maintain, extend, and improve the internal Go codebase that integrates our network elements, enterprise systems, and operational workflows.
• Integration Architecture: Own the API and database integration layer across a broad and evolving set of systems — including OSS/BSS platforms, network elements, and third-party commercial services.
• Technical Standard-Setting: Set the bar for code quality, design patterns, and development practices on the team. Review contractor contributions and provide clear, actionable feedback.
• Delivery: Ship features and improvements with the discipline to scope, estimate, and follow through.
• Collaboration: Work closely with the Business Systems Analyst, the Visibility & OSS team, and other internal stakeholders to translate operational needs into working software.

What You Bring:

• Technically Grounded: Able to wtite clean Go and knows why. Understands how distributed systems fail and builds things that are easier to debug when they do.
• Integrations Experience: Has connected real systems to each other — APIs, databases, queues, webhooks. Comfortable designing integrations that hold up when the external system behaves unexpectedly.
• Domain Curiosity: Telecom, ISP, or network operations experience is a strong asset. Genunie interest about how IP networks, provisioning systems, and billing automations intersect – and the initative to learn the domain.
• Ownership Mentality: Not precious about the codebase inherited. Tales responsibility for making it better, cleaner, better documented, easier to build on without rewriting everything first. Leaves things in better shape than they were found.
• Clear Communicator: Able to explain a technical restraint to someone who does not write code and a busiess requirement to someone who does. Keeps stakeholders informed without over-communicating.

Experience:

• Strong Go development experience in a production environment. Comfort across the stack — API design, database integration, job scheduling, lightweight front-end where required.
• Experience integrating with external APIs at scale: REST, GraphQL, webhooks, or similar.
• Familiarity with Linux environments, containerization, and deployment basics.
• Exposure to telecom or ISP systems is a significant asset: OSS/BSS platforms, provisioning systems (Kea DHCP, PON EMS), network element APIs, or billing automation.
• Experience in a small team where you wore multiple hats and shipped without a lot of process overhead.
• Contractor or vendor code review experience is an asset.

Education:

• Degree or diploma in Computer Science, Software Engineering, or equivalent practical experience. Credentials are an asset, not a requirement.

ImPACT Values

• Performance & Commitment

We hold ourselves to the highest standards, delivering exceptional results through dedication, accountability, and continuous improvement. Our commitment to excellence drives us to push boundaries, take ownership, and always follow through.

• Agility & Collaboration

We move fast, adapt with courage, and work together to solve challenges. Through empowerment and open communication, we foster a culture where bold ideas thrive. We leverage our collective strengths, achieve shared success and deliver exceptional results for our customers and teams.

• Customer Centricity

In every decision we make, we think through the customer’s lens. We know that anticipating and exceeding their expectations isn’t just good service—it’s the foundation of who we are. By staying deeply connected to our customers’ needs, we build loyalty, enhance our reputation, spark positive word-of-mouth and drive company growth.

• Trust & Integrity

We build trust by acting with integrity, respect, and transparency in everything we do. We communicate with each other openly and presume positive intentions. By upholding these principles, we strengthen relationships, create a culture of respect, and empower teams to succeed together.

Why You Should Join telMAX:

• We are a growing, dynamic organization
• We offer a competitive variable compensation package
• Hybrid positions
• Benefits (Medical, Dental, and Vision)
• Health Spending Account (HSA)
• RRSP matching program

Equity Statement

telMAX Inc. is an equal opportunity employer committed to fostering an inclusive and accessible workplace, welcoming applications from all individuals. In accordance with the Accessibility for Ontarians with Disabilities Act (AODA), accommodations are available on request for candidates during the selection process as well as throughout employment.