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Lead Full Stack Engineer

X4 Technology

Canada · On-site Full-time Lead 4d ago

About the role

An international cross-border payments company are looking for a Lead engineer to help build and scale their payment platform. You’ll work across the full stack - frontend, backend, cloud infrastructure, and data - designing reliable systems that power real financial transactions.

You'll lead their latest platform, provide technical expertise at both the architectural and hands-on development levels, and mentor junior team members.

What You’ll Do: • Design and build scalable payment applications and APIs • Develop modern frontend interfaces and backend services • Integrate with payment providers and financial systems • Optimise database performance and system reliability • Contribute to architecture decisions and technical strategy • Support CI/CD pipelines and cloud infrastructure • Mentor developers and promote engineering best practices

Tech Stack: • Frontend: TypeScript, JavaScript, Vue.js (or React/Angular), HTML5, CSS3 • Backend: PHP 8 (Laravel or Symfony), • REST APIs • Data: MySQL, PostgreSQL, Redis • Cloud & DevOps: AWS, Docker, CI/CD, Kubernetes (nice to have) • Architecture: API design, OAuth/JWT authentication, queues, webhooks, payment integrations

What We’re Looking For: • Strong system design and API architecture skills • Experience building high-performance, scalable applications • Comfortable working across frontend, backend, and cloud environments

For more details, apply now!

Requirements

  • Strong system design and API architecture skills
  • Experience building high-performance, scalable applications
  • Comfortable working across frontend, backend, and cloud environments

Responsibilities

  • Design and build scalable payment applications and APIs
  • Develop modern frontend interfaces and backend services
  • Integrate with payment providers and financial systems
  • Optimise database performance and system reliability
  • Contribute to architecture decisions and technical strategy
  • Support CI/CD pipelines and cloud infrastructure
  • Mentor developers and promote engineering best practices

Skills

TypeScriptJavaScriptVue.jsReactAngularHTML5CSS3PHP 8LaravelSymfonyREST APIsMySQLPostgreSQLRedisAWSDockerCI/CDKubernetesAPI designOAuth/JWT authenticationqueueswebhookspayment integrations

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