Why This Role? Every parcel UniUni delivers is powered by software. As a Senior Staff Software Engineer, you won't just write code - you'll shape the systems that move millions of packages across North America. You'll work on hard problems: real-time logistics routing, high-throughput data pipelines, and platforms built for scale. If you want your work to have a direct, visible impact on how e-commerce moves, this is that role.
About the role- The Senior Staff Software Engineer is a senior technical leader within UniUni's engineering organization, reporting to the Chief Technology Officer. This individual drives the design, development, and delivery of scalable, high-performance software that powers our logistics platform. Beyond hands-on engineering, this role requires strong architectural judgment and the ability to mentor and influence across teams. You will play a key role in shaping UniUni's technology direction as we continue our rapid expansion across North America.
What you'll do- Design, build, and maintain robust application software using PHP (core and frameworks) and TypeScript, with a focus on scalability and long-term maintainability.
- Architect and implement full-stack solutions, seamlessly integrating server-side logic with frontend interfaces.
- Lead troubleshooting and root-cause analysis of backend systems, identifying and resolving complex issues efficiently.
- Design, build, and integrate RESTful APIs that support internal and external consumers.
- Architect and manage relational and non-relational data storage solutions, ensuring performance, reliability, and data integrity.
- Conduct comprehensive code reviews and drive continuous improvements to codebases for enhanced performance and maintainability.
- Establish and enforce engineering best practices, coding standards, and documentation guidelines across the team.
- Collaborate with product managers, designers, and cross-functional teams to deliver high-quality full-stack web applications.
- Mentor and coach junior and mid-level engineers, fostering a culture of technical excellence and continuous learning.
- Contribute to architectural decision-making and technology roadmap planning.
Qualifications- 10+ years of professional experience building production-grade applications, with strong backend expertise (PHP experience highly valued).
- Deep expertise in one or more PHP frameworks: Laravel, Yii, or Symfony.
- Proficient in using AI tools such as Cursor and Claude.
- Strong proficiency in HTML, CSS, and JavaScript, with hands-on React experience.
- Proven ability to design and manage relational (MySQL, PostgreSQL) and non-relational (MongoDB, Redis) databases, including schema design and query optimization.
- Extensive experience with API design and integration (REST).
- Expert-level knowledge of OOP principles, design patterns, and web architectural patterns (MVC, microservices, event-driven).
- Track record of leading technical initiatives and delivering complex projects at scale.
- Demonstrated ability to mentor engineers and elevate team-wide technical standards.
- Strong communicator who can translate complex technical concepts for non-technical stakeholders.
Nice-to-Have Qualifications - Bachelor's degree or higher in Computer Science, Software Engineering, or a related field - or equivalent hands-on experience.
- Experience in logistics, supply chain, or e-commerce technology platforms.
- Familiarity with cloud infrastructure (AWS) and containerization (Docker, Kubernetes).
- Exposure to CI/CD pipelines and DevOps practices.
- Exceptional critical thinking and systems-level problem-solving skills.
Benefits Competitive compensation package, Dental, Vision, Medical insurance, Paid Holiday, Paid Time Off, Paid Sick Leave, RSSP/401K, Management training program, etc
