Senior Software Developer - Full Stack (PHP / React)

Who We Are UniUni is a fast‑growing, technology‑driven last‑mile logistics company operating across North America. Since 2019, we have scaled to handle millions of parcels annually, covering the majority of Canada and rapidly expanding across the United States.
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.
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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