Full Stack Developer Co-op

About Flexspring

Flexspring builds technology that helps companies connect their HR systems and move people data smoothly between tools - without manual work.

We’re a remote-first team spread across Canada and beyond, and we care a lot about how we build things and how we work together. At Flexspring, interns and co-op students don’t sit on the sidelines. You’ll work on real product features that are used by real customers, and many of our interns join us full-time after graduation.

Full Stack Software Developer – Co-op / Internship

Location: Quebec-based (Montreal preferred)
Duration: 4+ months

The Opportunity

We’re growing and looking for a Full Stack Software Developer Co-op / Intern to join our R&D team.

If you’re excited about building things that actually ship, this role is for you. You’ll work mainly in a Java-based stack, help develop Flexspring’s core platform, and learn how real SaaS products are designed, tested, and improved over time.

This is a hands-on role where you’ll code, learn, ask questions, and contribute—every week.

What You’ll Be Working On

• Building and improving features in Flexspring’s product


• Writing backend and full stack code using Java and JavaScript


• Working with APIs and data flowing between systems


• Writing and running tests to make sure things work as expected


• Collaborating with experienced developers through code reviews and team discussions
  
  

What We’re Looking For

• You’re currently studying Software Engineering, Computer Science, or a related field


• You have a solid foundation in Java and/or JavaScript


• You’ve been exposed to Spring and JUnit (school projects count!)


• You’ve worked with or learned about APIs


• You’re curious, motivated, and enjoy solving problems
  
  

Nice to Haves

• Experience with REST APIs, React, GraphQL, Groovy, JMS, or SOAP


• Interest in SaaS products or system integrations


• Curiosity about how large systems talk to each other
  
  

What You’ll Get Out of It

• Real experience working on a production SaaS platform


• Mentorship and support from senior developers


• Exposure to real-world engineering practices


• Competitive co-op pay


• Flexible hours in a remote-first environment


• A strong chance to grow into a full-time role after graduation