Fullstack Developer (node.js / React)

Full-Time in Montreal, QC

Catallaxy is looking for a talented full-stack developer (node.js) able to quickly develop, deliver and support clean, scalable and high quality code for blockchain applications.

  • You will work closely with the head of product
  • You will have the opportunity to grow inside the organization

Job Location: Montreal, Quebec, Canada

Job type: Full time


  • Design, develop, deliver, and support web-based applications and APIs
  • Write maintainable code with extensive tests and version control
  • Ensure the scalability and quality of all code and products
  • Build applications that focus on great user experience
  • Create automated testing to quickly and confidently ship code
  • Assist with product documentation, unit testing and ensuring overall product quality
  • Participation in daily scrums, design discussions, code reviews and code analysis
  • Help choose and define the tech stack and tools


  • 3+ years’ experience in software development
  • 2+ years with JavaScript technologies: Node.js and React/Angular or similar
  • Experience building scalable web applications using modern frameworks (React/ Angular, etc.) and tools (npm, webpack, etc.)
  • Good understanding of both front end (JavaScript, HTML, CSS) and server side (Node.js, express) components
  • Experience with API design and development (REST, JSON, RESTFull services).
  • CSS preprocessors like Sass or LESS
  • Front-end (CSS) frameworks like Foundation or Bootstrap
  • JS-based build tools like Grunt, Gulp, and Bower
  • Experience using test-driven development and writing accurate tests
  • Experience with databases SQL and NoSQL (MongoDB, Postgres, etc...)
  • Ability to translate technical requirements into elegant code solutions
  • Focus on continuous improvement
  • Experience with cloud providers (AWS/OVH/Google, etc.) and service deployment
  • Embrace Agile/Scrum methodologies and development best practices
  • Experience with Git
  • Keeping in mind Security concerns throughout the process
  • Excellent problem solving and debugging skills to rapidly identify and fix bugs and problems
  • Ability to identify, implement and manage code libraries that minimize repetitive code and improve application design
  • Use code optimization techniques to improve robustness and performance of software

Human skills:

  • Proven and strong communication skills (in English and/or French)
  • Team player, but also fully able to efficiently accomplish tasks independently
  • Strong analytical and problem solving skills
  • You get things done
  • Willingness to wear multiple hats and be flexible in a fast-moving environment

Nice to have

  • Bachelor or master degree in Computer Science, a related field or equivalent experience
  • Knowledge/experience with other programing languages (C++, Go, .Net, Python)
  • Blockchain, bitcoin interest or willing to learn
  • Interest in smart contract (Ethereum)
  • Mobile dev (IOS, Android) or ability to hire and manage someone if needed
  • Experience with distributed systems and decentralized technologies
  • Experience with message or event driven architectures (such as RabbitMQ or Kafka)
  • Continuous Integration (CI) and Continuous Delivery (CD) DevOps experience.
  • Experience with Docker
  • Knowledge of Micro Services concepts and architecture

Please submit a resume, and a short text highlighting your experience with the mentioned programing languages and tools as well as your experience developing web applications and products.

About Catallaxy

With more than 15 Montreal-based experts and nearly 50 strategic partners worldwide, our service offering combines the technical expertise of the best core Blockchain talents and the strategic consulting power of Raymond Chabot Grant Thornton. Our objective is to prepare businesses for their blockchain transformation.

Catallaxy is also launching the Blockhouse. The Blockhouse is a unique innovation center bringing together the most influential players in the blockchain community. Strategically based in Montréal, the Blockhouse is a unique international showcase for decentralized and distributed technologies.