Senior Software Engineer

Role Description

FastSpring is looking for a Senior Software Engineer to join our Payments team, designing and developing the systems that power our industry-leading full-service ecommerce platform — payment processing, subscription billing, settlement, refunds, and reporting.

• Working within our agile software development teams, lead design and development of product features for highly available payment processing, subscription billing, and reporting platforms.
• Lead integrations with external platforms such as payment processors, card networks, and alternative payment methods (APMs).
• Ensure a robust software delivery process through clear procedures as well as automated build, test, and deployment capabilities.
• Debug and troubleshoot complex issues, optimize system performance, and ensure reliability across money-movement flows.
• Reduce time to market by decomposing large feature requirements into small development tasks suitable for incremental releases.
• Participate in design and code review with other team members.
• Mentor junior members of the development team.
• Manage software issues through tickets according to product development priorities.
• Lead the adoption of best practices for coding standards, testing, and deployment.
• Work with other FastSpring team members — Product, Risk, Finance, and Compliance — to understand and incorporate business and regulatory requirements (PCI-DSS, PSD2/SCA, 3DS2) into product solutions.
• Flexible hours to work with local and remote team members on feedback and requirements.
• Respond to production issues and apply continuous improvement techniques to fully resolve them.

Qualifications

• 10+ years of software development experience delivering commercial SaaS solutions using Java.
• Experience in the Payments industry and/or integrating with a third-party payment API is a plus.
• Passionate problem solver with a proven track record of delivering high-quality software solutions.
• 4+ years of experience with SQL (PostgreSQL) and NoSQL storage.
• 3+ years of experience implementing RESTful service-oriented architectures with public APIs.
• HTML / CSS / JavaScript / Angular experience; Vue a plus.
• Unit testing, mocking, and automation experience.
• 3+ years experience with Amazon Web Services, including EC2, S3, RDS, DynamoDB; experience with Lambda is a plus.
• Experience with Linux; experience with containers & Docker is a plus.
• Comfortable using AI-assisted development tooling — our engineers use Claude Code day-to-day to accelerate design, implementation, and review.
• Bachelor's or Master's degree in Computer Science or equivalent experience.

Requirements

• Consistent with FastSpring's values and applicable law, we provide the following information to promote pay transparency and equity.
• The base pay range below represents a good faith estimate of the low and high end base pay range for the listed position.
• This role may be eligible for the corporate bonus plan (or, if a sales role, a commission plan as defined in the sales incentive plan document).
• Estimated Base Pay Range: $145,000 — $156,000 USD.

Benefits

• FastSpring provides a variety of benefits to employees.