Senior Full Stack Developer

CanadaHybrid

Responsibilities

Design, build, and maintain scalable backend services, APIs, and data systems
Collaborate cross-functionally with Product, Design, AI, and Engineering teams to ship high-impact product improvements
Improve system reliability, observability, performance, and developer tooling
Investigate and resolve complex production issues across the stack
Prototype quickly, gather feedback, and iterate based on customer and business needs
Mentor developers through collaboration, code reviews, and technical discussions

CoLab is the AI platform for driving stronger engineering decisions.
Every design review in CoLab builds a knowledge repository of design feedback, decisions, and lessons learned - which AI agents draw from to flag issues on future designs before they compound.
You’ll work closely with Product, Design, AI, and fellow developers to solve complex technical problems that directly impact how engineering teams collaborate and make decisions.
Depending on the team you join, your work could involve building scalable APIs, improving system reliability, designing data-heavy workflows, integrating AI-powered capabilities, or developing intuitive frontend experiences for highly technical users.
You know how to balance speed, scalability, and maintainability without becoming dogmatic about any of them.
experience with modern languages such as Python and Javascript •
experience with modern frameworks such as React and TypeScript Database
experience with Postgres and DynamoDB
Strong understanding of system design, scalability, and software architecture •
Experience working with relational and/or distributed data systems
Ability to communicate technical concepts clearly across technical and non-technical audiences
Experience working on AI-powered products or workflows •
Experience with event-driven systems and asynchronous architectures •
Experience with infrastructure, DevOps, or platform engineering •

Comfortable operating in fast-moving environments with evolving priorities Bonus Points •
This is a full-time, permanent position with competitive compensation and stock options
We offer extended health benefits, unlimited paid vacation, and RRSP matching
Our headquarters are in St. John’s, Newfoundland, with flexible hybrid and remote options. This role can be performed remotely from anywhere in Canada. Equity Note

At CoLab, we help mechanical engineering teams bring life-changing products to market years sooner.
The more your team works in CoLab, the smarter it gets and the faster you arrive at the ideal design.
Companies like Ford, Komatsu, and Johnson Controls use CoLab to catch issues earlier, eliminate rework cycles, and bring products to market faster.
Founded in St. John’s, Newfoundland, CoLab has grown quickly from our first customer in 2019 to a rapidly scaling company.
We’ve recently been recognized on Deloitte’s Fast 50™ and Fast 500™, and named a Canadian company to watch by The Globe and Mail and Financial Post. About the Role
At CoLab, full stack developers are deeply involved in shaping the product — not just implementing tickets.
This is a role for someone who likes difficult problems and meaningful ownership.
You’ll be expected to make thoughtful technical decisions, communicate clearly, and move work forward without waiting for perfect direction.
Some developers prefer staying narrowly specialized. That’s not this role. We’re looking for someone who enjoys understanding the full system — from infrastructure and services to the customer experience sitting on top of them. Our Ideal Candidate
You care about building reliable systems, but you also understand that great software only matters if it solves real customer problems.