Sr Software Engineer - B/E at Jobgether – United States

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Software Engineer – Back-End in the United States.

This role places you at the core of a high-scale commerce platform where financial systems, APIs, and backend infrastructure directly power merchant billing and payments. You will design and evolve critical systems that manage real-money transactions, partner payouts, and subscription logic across a rapidly growing ecosystem. A key focus of the role is building reliable, secure, and scalable backend services using PHP and Go. You will also contribute to a major legacy modernization effort, migrating a core CodeIgniter 2 system to CodeIgniter 4. Beyond billing, you will help expand platform capabilities across data pipelines, partner tools, and reporting systems. Working in a fully remote, fast-paced engineering culture, you will collaborate closely with product and cross-functional teams to shape high-impact technical decisions. This is a hands-on, high-ownership role with strong influence on both architecture and business outcomes.

In this role, you will take ownership of critical backend systems that support billing, payments, and platform infrastructure. You will design and maintain scalable services while ensuring security, performance, and reliability across financial workflows.

• 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

This position requires strong backend engineering expertise, particularly in distributed systems and financial-grade applications. The ideal candidate combines deep technical skills with strong product awareness and collaborative communication abilities.

• 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; familiarity with event-driven architectures is a plus
• 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

• Fully remote work environment across the U.S. and Canada
• Competitive salary range of $130,000 – $180,000 USD annually (location-dependent)
• Comprehensive health, dental, and vision insurance for employees and dependents
• Flexible PTO policy, paid holidays, sick leave, and additional personal days (including birthday off)
• Retirement plans including 401(k) in the U.S. and RRSP/TFSA options in Canada with employer contribution
• 3% automatic retirement contribution based on gross salary
• Parental leave and family support policies
• Professional development opportunities and tools to support engineering growth
• Additional perks including wellness support, remote work flexibility, and team engagement initiatives