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Senior Software Engineer - Fintech Payments & Tax APIs
Upwork
📍
lisboa, Portugal
Location
lisboa
Posted
June 06, 2026
Commute
Local Area
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Job Description
Responsibilities
- Drive cross‑functional alignment on complex financial and compliance initiatives, translating ambiguous requirements into clear technical direction, execution plans, and well‑reasoned trade‑offs.
- Design, build, and evolve distributed services for payments and tax processing, improving accuracy, reliability, and maintainability across diverse regulatory and transactional use cases.
- Develop and operate robust APIs and integrations that scale with product growth, emphasizing performance, observability, and operational excellence.
- Integrate and manage external payment processors, tax engines, and compliance services, enhancing system resilience, reducing defects, and accelerating issue detection and resolution.
- Elevate engineering quality through strong testing practices, code reviews, and effective use of automation and AI‑assisted workflows to improve development velocity without compromising rigor.
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