Senior Software Engineer (Merchant Experience)

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. * 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(s). * 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) * Building 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 Helcim was founded with a mission at heart: to be the world’s most loved payment system. From the very start, we knew that we wanted to be different from every payment processor out there. We want the merchants we serve to feel supported and see us as a trusted partner rather than simply just another “cost of doing business.” We are relentless in our pursuit to provide a radically transparent and honest payments solution that flat out saves business owners money, all while treating them like human beings. At Helcim, we build a team of engaged, caring and intelligent people. In return we provide an environment where you can be excited to come to work each day and tackle these challenges with an amazing team. Learn more in our culture book; The Way of the Helcim [https://www.helcim.com/theway/]. The Helcim Culture: How We Work * We Are Builders: We don't wait for solutions; we create them. * The Harder Path: We choose what’s difficult because it’s more rewarding. * Creating Trust: We earn it every day by being our best selves. * Company of Many: We’re a collective force. Great teams do great things. The Perks: Why You’ll Love It Here 🎁 * Ownership: Every single team member gets Stock Options. You own a piece of what you build! 📈 * Health First: Comprehensive benefits + a Health Spending Account (HSA) starting on Day 1. 🦷 * Flexibility: Hybrid life! We’re in-office Mon/Wed/Fri and remote Tue/Thu. 🏠 * Family Support: Top-ups for maternity/parental leave and "bonding breaks." 👶 * Rest & Recharge: Paid vacation + a full company break in December. ❄️ * Growth: $500 annual training budget to keep your skills sharp. 📚

The Senior Software Engineer will design and maintain scalable, high-performance APIs and event-driven systems to support core merchant experiences. They will also mentor junior developers and collaborate with cross-functional teams to improve development processes and system reliability.

Candidates must have 6+ years of professional software development experience with high proficiency in PHP and Laravel. Strong expertise in system design, SQL optimization, and containerization technologies like Docker and Kubernetes is required.

• Stock Options • Health Insurance • Health Spending Account • Maternity/Parental Leave Top-ups • Paid Vacation • Annual Training Budget

Identified from the job description. Confirm important requirements above.

• PHP
• Laravel
• System Design
• SQL
• Golang
• Docker
• Kubernetes
• CI/CD
• Gitlab
• BigQuery
• Datadog
• AWS
• Google Cloud Platform
• Event-driven Architecture
• API Development

• Software
• Technology
• Engineering
• Finance & Accounting
• Data & Analytics

Minimum education

Professional degree

Minimum experience

5+ years

Posting language

English

Working hours

40 hours per week

Office presence

3 days per week