Full-Stack Software Engineer building CRM and tools for the construction supply industry.
Full Stack Software EngineerLocation: Hybrid (Onsite in Hamilton, ON)
About SalesJack
SalesJack is a fast-growing, profitable sales software platform (CRM, Prospecting Service) tailored for independent businesses in the construction supply industry. With our founding team and customers based in the US, we are expanding our engineering capabilities in Canada. Our mission: build tools that solve real problems for our customers and transform industry workflows.
Your Role
As a Full Stack Software Engineer at SalesJack, you'll lay the technical foundation for new features and products used by construction supply businesses. You'll work closely with founders and lead engineers, owning major parts of our greenfield product development. We highly value a startup mentality—taking initiative, moving quickly, and iterating solutions based on real customer feedback.
What You'll Do:
Design, develop, and maintain full stack features for our CRM and automation tools
Work across our modern frontend (React.js, Next.js) and backend (Node.js or Java Spring Boot) stacks, interfacing with PostgreSQL databases
Build and maintain reliable authentication and role-based access control (auth/RBAC) mechanisms
Develop robust, workflow-driven automation tools using technologies like Cadence or Temporal
Contribute to architectural decisions, technical strategy, and team culture as an early hire
Collaborate with founders, engineers, and users in a fast-paced and supportive environment
What We're Looking For:
2+ years experience as a full stack software engineer (professional or notable personal projects)
Strong knowledge of React.js and Next.js for frontend development
Experience with either Node.js or Java Spring Boot for backend APIs and services
Proficient in designing and querying PostgreSQL databases
Familiarity with authentication/authorization (auth/RBAC) systems
Experience (or strong interest) in automation and workflow engines like Cadence or Temporal
Excited to work independently, take ownership, and thrive in a startup/greenfield environment
Why Join Us:
High impact: help define our product, technology, and culture as a foundational team member
Greenfield projects: Build new features and tools from scratch, shaping their direction
Startup culture: Fast iteration, close collaboration with founders, and direct customer feedback
Highly competitive salary and comprehensive health benefits
Hiring Process
Initial call with our founding engineer to discuss your background and introduce SalesJack (~30 mins)
Technical Exercise: Live coding and problem-solving session (~1.5 hours)
Cultural fit call with one of our founders (~30 mins)
Offer
