Senior Software Developer - Full Stack (PHP / React)

Senior Full Stack Software Developer (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.
Our platform powers a highly scalable, asset-light logistics network that combines real-time data, intelligent routing, and a flexible driver ecosystem to deliver fast, reliable, and cost-efficient last-mile services.
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
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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