Technical Lead (Full-Stack Engineering & AI)

Brainhunter Systems Ltd; Toronto; Hybrid; CAD 120,000 - 180,000; Full time

Job summary

Brainhunter Systems Ltd. seeks a Technical Lead (Full-Stack Engineering & AI) to shape architecture and deliver modern digital experiences.

You will lead frontend (React/Next.js), backend (Java/Spring Boot), APIs, data integration, cloud infra, and AI-enabled features across enterprise platforms. You’ll stay hands-on across the stack while mentoring engineers, performing technical reviews, and partnering with Solution Architects to ensure secure, observable, scalable solutions with CI/CD and IaC

Qualifications

• 8+ years of experience building and supporting enterprise-scale digital products.
• Hands-on Technical Lead, Staff Engineer, or Senior Full-Stack Developer.

Responsibilities

• Design, develop, test, and deploy scalable digital solutions using modern front-end and back-end technologies.
• Build customer-facing experiences using React, Next.js, and TypeScript.
• Develop robust Java/Spring Boot services, REST APIs, microservices, and event-driven architectures.
• Create reusable components, integration patterns, and platform capabilities.
• Establish and maintain cloud infrastructure, CI/CD pipelines, and Infrastructure-as-Code solutions using Terraform.
• Deliver AI-powered product capabilities including RAG, prompt engineering, structured outputs, tool integrations, evaluations, monitoring, and governance.
• Implement automation across unit, integration, API, performance, accessibility, and security testing.
• Lead technical reviews, mentor engineers, and partner with Solution Architects to drive high-quality outcomes.
• Improve system observability, resiliency, security, and operational readiness across enterprise platforms.

Job description

Technical Lead (Full-Stack Engineering & AI)

Job Location

Toronto or London, ON (Hybrid - 3 days/week onsite)

Job Type

Contract opportunity, 12-month term, with good possibilities for extensions

Anticipated Start Date

4 weeks from the official offer day

Potential convert to permanent

No

Possibility o/f Extensions

Yes

Position Overview

• Seeking a hands-on Technical Lead who thrives in building modern, intelligent digital experiences. This role combines deep full-stack engineering expertise with technical leadership across web applications, APIs, cloud infrastructure, AI-enabled solutions, and enterprise-scale platforms.
• We are looking for a hands-on Technical Lead and Senior Full-Stack Engineer who can build across the front end, back end, experience engine, and AI/ML layers and establish the engineering foundations required to deliver them reliably.
• In this role, you will remain hands-on across the full technology stack—from React/Next.js user experiences and experience orchestration to Java/Spring Boot services, APIs, Kafka events, and data integration using REST API via Apigee. You will also be able to establish cloud infrastructure, development environments, and CI/CD pipelines, working with enterprise platform teams where shared services or controls are involved.

Key Responsibilities

As a Technical Lead, you will remain hands-on across the entire technology stack while guiding engineering excellence and delivery outcomes. You'll:

• Design, develop, test, and deploy scalable digital solutions using modern front-end and back-end technologies
• Build customer-facing experiences using React, Next.js, and TypeScript
• Develop robust Java/Spring Boot services, REST APIs, microservices, and event-driven architectures
• Create reusable components, integration patterns, and platform capabilities
• Establish and maintain cloud infrastructure, CI/CD pipelines, and Infrastructure-as-Code solutions using Terraform
• Deliver AI-powered and agentic product capabilities including RAG, prompt engineering, structured outputs, tool integrations, evaluations, monitoring, and governance frameworks
• Implement automation across unit, integration, API, performance, accessibility, and security testing
• Lead technical reviews, mentor engineers, and partner with Solution Architects to drive high-quality outcomes
• Improve system observability, resiliency, security, and operational readiness across enterprise platforms.

Required Qualifications, Experience, and Skills for this Role

• 8+ years of experience building and supporting enterprise-scale digital products
• Proven experience as a Technical Lead, Staff Engineer, or Senior Full-Stack Developer
• Strong expertise in:
  • TypeScript
  • React
  • Next.js
  • Java
  • Spring Boot
• Experience with:
  • REST APIs
  • GraphQL
  • Event-driven architectures
  • Microservices
  • CI/CD
  • Terraform
  • Containers and Kubernetes
• Hands-on cloud experience (Azure preferred; AWS experience considered an asset)
• Strong understanding of quality engineering, test automation, and secure software development practices
• Experience using AI-assisted engineering tools such as GitHub Copilot, Claude Code, or similar platforms
• Experience delivering AI/ML-enabled applications and intelligent product features in production environments.

Standout Skills

• API Gateway technologies and headless content platforms
• Feature flagging, experimentation, analytics, and personalization
• Okta/Auth0 and Customer Identity & Access Management (CIAM)
• Financial Services, Insurance, or other highly regulated industry experience
• Experience with LangGraph, CrewAI, Microsoft Agent Framework, MCP, and agent-to-agent integrations

Ideal Resource for this Role

will help shape the future of digital experiences by delivering secure, accessible, resilient, and AI-powered customer journeys. You'll influence engineering standards, accelerate delivery velocity, and drive innovation while maintaining enterprise-grade quality and governance.

Thank you for your interest in working with us. We'll contact only those candidates who are shortlisted for the next steps in the hiring process.