Senior Full Stack Software Developer (PHP / React)

UniUni

$100K — $130K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in Computer Science, Engineering, or equivalent experience
  • ~10 years of software development experience
  • Strong proficiency in PHP (Laravel or similar frameworks)
  • Solid experience with React or modern frontend frameworks
  • Experience building systems with moderate to high concurrency
  • Good understanding of system design and backend architecture principles
  • Familiarity with Docker, CI/CD, and Linux environments

Responsibilities

  • Leverage AI tools to improve development efficiency and code quality
  • Design and develop backend services using PHP (Laravel preferred)
  • Build and maintain frontend features using React
  • Contribute to system design and architectural decisions within your domain
  • Optimize systems for high concurrency and large-scale data processing
  • Collaborate with cross-functional teams to deliver end-to-end features
  • Integrate with internal and external APIs and logistics partners

Benefits

  • Competitive compensation and benefits package
  • Medical, Dental, and Vision coverage
  • Paid Time Off, Holidays, and Sick Leave
  • 401(k) / RRSP
  • Clear growth path toward senior/staff levels
  • A fast-paced, high-impact engineering environment
Full Job Description
About the Team & Systems

Our team builds the core logistics platform that powers:

  • High-volume order processing and real-time tracking
  • Intelligent routing and dispatch systems (AI-assisted)
  • Warehouse and sorting integrations
  • Cross-border and multi-region delivery orchestration
  • Open APIs for partners, 3PLs, and e-commerce platforms

We operate in a high-concurrency, data-intensive environment, where systems must handle:

  • Millions of parcel events and status updates
  • Real-time decision making (routing, assignment, optimization)
  • Distributed services across multiple regions

This is a system where scalability, reliability, and performance are critical by design.

About the Role

We are hiring a Senior Full Stack Software Developer to contribute to the design and development of our core systems.

This role is ideal for engineers who have strong hands-on skills and a growing architectural mindset, and who are comfortable working in complex, high-scale environments.

What You'll Do

  • Leverage AI tools (e.g., Copilot, ChatGPT, Cursor) to improve development efficiency and code quality
  • Design and develop backend services using PHP (Laravel preferred)
  • Build and maintain frontend features using React
  • Contribute to system design and architectural decisions within your domain
  • Optimize systems for high concurrency and large-scale data processing
  • Collaborate with cross-functional teams to deliver end-to-end features
  • Integrate with internal and external APIs and logistics partners
  • Write clean, maintainable, and testable code
  • Participate in code reviews and contribute to engineering best practices
  • Troubleshoot production issues and improve system reliability


Qualifications

  • Bachelor's degree in Computer Science, Engineering, or equivalent experience
  • ~10 years of software development experience
  • Strong proficiency in PHP (Laravel or similar frameworks)
  • Solid experience with React or modern frontend frameworks
  • Experience building systems with moderate to high concurrency
  • Good understanding of system design and backend architecture principles
  • Experience with MySQL/PostgreSQL, including query optimization
  • Familiarity with Redis, caching, and message queues
  • Experience with cloud platforms (AWS / GCP / AliCloud is a plus)
  • Familiarity with Docker, CI/CD, and Linux environments
  • Experience using AI tools to improve development productivity
  • Strong problem-solving skills and ability to work independently


Location Requirement

  • Candidates must be based in the Pacific Time Zone (PST)


What We Offer

  • Competitive compensation and benefits package
  • Medical, Dental, and Vision coverage
  • Paid Time Off, Holidays, and Sick Leave
  • 401(k) / RRSP
  • Clear growth path toward senior/staff levels
  • A fast-paced, high-impact engineering environment

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