Senior Software Engineer - Python Backend

As a Software Engineer at LxT, you will work closely with our engineering, operations and product teams to build the most secure, cutting edge data annotation tools and platforms.

Job Description

  • Design, develop and test new products, while maintaining the existing
  • Stay up to date with the latest industry trends in software and cloud solutions.
  • Ensure high code and design quality that fulfills business requirements and good design aspects (scalability, fault tolerance).
  • Coach, mentor and support junior team members by:Supporting the culture of technical excellence and zero technical debt Supporting technical estimations and effort sizing.Establishing code guidelines and reviewing PRs.Adopting unit testing and integration testing in the system.
  • Supporting the culture of technical excellence and zero technical debt 
  • Supporting technical estimations and effort sizing.
  • Establishing code guidelines and reviewing PRs.
  • Adopting unit testing and integration testing in the system.
  • Design and implement solutions to protect against common security vulnerabilities


  • A minimum of 5 years of experience in programming for the web.
  • Solid understanding of Python for web applications
  • Extensive experience with Django, Flask or other Python web frameworks
  • Experience with both Relational and NoSQL databases
  • Good understanding of web servers (Apache, Nginx) and essential configurations
  • Solid understanding of algorithms, data structures, and complexity
  • Passionate to optimize the performance bottlenecks and large-scale deployments
  • Familiarity with containerization concepts (e.g. Docker and Kubernetes)
  • Big fan of unit testing and TDD
  • Strong command of Git and team workflows.
  • Professional-level written and spoken English.

Preferred qualifications

  • Experienced with any of the cloud platforms (Azure, GCP or Amazon)
  • Good understanding of CI/CD, containerization and container orchestration tools
  • Familiar with Agile project management methodologies.
  • Familiarity with the OWASP Top 10 Web Security Vulnerabilities and their mitigation.
At LxT, we make the extraordinary reality. In 2014, our company began operations in Mississauga in the heart of the Toronto-Waterloo tech corridor. Now, LxT is a premium-class AI/ML service provider with a highly engaged worldwide network and an ever-growing list of satisfied clients, including Fortune Global 500 brands. With a track record of doubling operations volume year-on-year, we exceed client expectations through quality, speed, and an exceptional team that embraces our core values. LXT is poised for market dominance. Join us on the journey to make your reality extraordinary.