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Lead Full Stack Developer

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Onsite

Lead Full Stack Developer

Themesoft Inc.

Lead Full Stack Developer

Skills

ReactPythonJavaMicroservicesPostgreSQLAIGitHubKubernetesTalent Acquisition

2 days ago

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Important information


Contract type:

Freelance / Contract

Location:

Toronto, ON, Canada

Work mode:

Onsite

Published on:

18 October 2026

What they need


Position : Lead Full Stack Developer

Location : Toronto, On – Hybrid

Job Summary :

  • Designs, develops, and oversees the implementation of advanced technical solutions, ensuring alignment with business objectives and adherence to best practices, while managing the end-to-end technical delivery of projects.
  • Build Gen AI system frameworks, Prompt Engineering, including designing and refining prompts to optimize LLM outputs, implementing Gen AI systems into production.
  • Leads development teams in the delivery of capabilities, providing technical direction and guidance to junior developers and team members and ensuring the successful execution of complex assignments and projects
  • Collaborates with business stakeholders and product owners to translate strategic objectives into actionable technical solutions, leveraging advanced knowledge to address unique and high impact challenges.
  • You will be responsible for working closely with AI data scientists to support data ingestion and feature engineering, establishing industry best practices, maintaining and managing technical documentations.
  • Executes on software development tasks or projects, requiring advanced problem solving, decision making and strategic thinking with some ambiguity.
  • Drives decisions on complex issues to develop clear, actionable recommendations for management, ensuring alignment on processes, tools and services with impact across other areas.
  • Leverages advanced and creative skills to resolve complex software development related problems, fostering cross functional collaboration to identify and implement innovative solutions.
  • Leads and facilitates cross functional collaboration efforts, fostering strong internal relationships across the organization and external partnerships to achieve impactful business outcomes.

Required Skills :

  • 7+ years of backend development experience in Java or Python
  • Strong backend development experience in Java or Python, including REST API and microservices
  • Strong experience with React and modern frontend development, including Micro-frontend (MFE) architectures and reusable UI components
  • Hands-on experience or strong understanding of Agentic AI concepts, LLM integrations
  • Understanding of prompt engineering and Gen-AI Development tools (GitHub Copilot, Windsurf, Claude Code)
  • Experience with Cloud platforms and technologies (OpenShift, Kubernetes, S3 Object Storage)
  • Experience working with relational databases particularly PostgreSQL, including schema design, query optimization and performance tuning.

Regards

Patrick Fernandez

Talent Acquisition Group - Strategic Recruitment Manager

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