Senior Software Engineer (Merchant Experience)

Helcim Inc.; Calgary; On-site; Full time

Job description

Helcim is seeking a Senior Software Engineer to join our full‑stack engineering squad dedicated to the core merchant experience. This team owns critical business logic that powers our platform, including areas like Invoicing, Products, and Taxation. In this role, you will act as a technical steward for the tools our merchants rely on daily. You will be responsible for engineering elegant front‑end interfaces and robust, scalable APIs utilized by both our internal systems and our network of third‑party integrators. This is a high‑impact position requiring a balance of architectural foresight, rigorous coding standards, and a user‑centric approach to complex financial workflows.

Qualifications

• 6+ years of professional software development experience.
• Education should include a Bachelor's, technical degree, bootcamp or other certifications in computer programming, computer science or object‑oriented software development, or equivalent experience.
• Highly proficient in PHP, Laravel + some front‑end JavaScript experience (Vue/React/Angular/Vanilla JS).
• Strong experience in system design for backend services, including caching strategies, fault tolerance, and performance optimization.
• Proven ability to optimize SQL queries and large‑scale data workflows to handle high transaction volumes.
• Familiarity with cloud‑native databases and BigQuery is a plus, as well as experience in Golang.
• Experience with Docker and Kubernetes, or other containerization software.

Responsibilities

• Designs and maintains scalable, high‑performance APIs to support both internal and external services, with a focus on correctness, reliability and security using PHP Laravel.
• Builds systems through event‑driven architecture with PHP as well as Go.
• Coaches and mentors junior developers, providing guidance, support, and feedback to help them grow in their roles.
• Work in a highly collaborative environment with cross‑functional teams (Data/Product/DevOps/Stakeholders/Design).
• Builds Continuous Integration/Deployment (CI/CD) pipelines through Gitlab to increase automation.
• On the lookout for ways to improve our development processes.
• Being a role model for high engineering standards.
• Easily discover new insights through our BigQuery Data Warehouse.
• Creates metrics, dashboards, and monitoring in Datadog to improve visibility, reliability, and operational awareness.
• Deploying and maintaining projects through Cloud Infrastructure such as AWS or Google Cloud Platform.