Sr Software Engineer - Back-End - Financial Systems
New
U.S. and CanadaFull-TimeSenior
Salary130000 - 180000 USD per year
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Job Details
- Experience
- 5+ years
- Required Skills
- PHPAgileGCPMySQLSCRUMJiraGoRESTful APIsConfluenceDistributed Systems
Requirements
- 5+ years of backend development experience using PHP and Go in production environments
- Strong experience building or maintaining billing, payments, or financial systems in SaaS or commerce platforms
- Proven ability to design scalable RESTful APIs with strong understanding of versioning, performance, and security
- Hands-on experience with cloud infrastructure (preferably GCP) and modern backend architecture patterns
- Strong understanding of secure coding practices, OWASP principles, and data protection in financial systems
- Experience working in Agile/Scrum environments using tools such as Jira, Bitbucket, and Confluence
- Solid knowledge of MySQL and distributed systems
- Strong communication skills with the ability to explain technical concepts to both technical and non-technical stakeholders
- Collaborative mindset with experience mentoring engineers and contributing to team-wide technical growth
Responsibilities
- Architect and develop billing and payments systems that handle merchant charging, partner payouts, and subscription flows across the platform
- Build and maintain secure, scalable APIs using PHP and Go to support financial operations and integrations
- Lead and contribute to the migration from CodeIgniter 2 to CodeIgniter 4, ensuring stability and modernization of legacy systems
- Develop backend systems supporting data pipelines, reporting, partner tools, and event-driven automation
- Collaborate with product, engineering, and support teams to define requirements, resolve production issues, and deliver high-quality features
- Drive engineering best practices, including code quality, testing standards, documentation, and performance optimization
- Ensure security-first development practices across authentication, authorization, and financial data handling
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