Senior Software Engineer

San FranciscoEngineering – Core Engineering /Full-time /On-siteAbout FinixFinix is building the global operating system for fintech, starting with payments. From startups to publicly traded companies, Finix processes tens of billions of dollars annually both in-store and online. Finix was founded in 2015 and is headquartered in San Francisco.To date Finix has raised over $200M, including a $75M Series C led by Acrew Capital and Lightspeed Venture Partners and backed by American Express Ventures, Bain Capital Ventures, Homebrew, Inspired Capital, Visa, and othersAbout the roleThe engineering team owns the delivery and stability of our product end to end. Since Finix serves as the complete payment platform of our customers’, our engineering team owns our customers’ ability to capture revenue. The Sr. Software Engineer role centers around envisioning superior technical solutions to our customers’ payment needs, leading its implementation and continuously ensuring reliable service to our customers. You will have broad autonomy and responsibility for formulating the best solution possible and working with your peers to deliver your vision. Finix is looking for a team member to join our engineering team who brings exceptional technical acumen, attention to detail, interest to grow and an obsession with building excellent, performing and scalable software. You willDeep dive into our customers’ needs, and work with product management to define new servicesOwn the technical vision, implementation, best practices and infrastructure within your domainDevelop close relationships with product management and peer engineersBecome an expert in your payments domain and mentor junior software engineersProactively improve our architecture, frameworks, tooling, automation, and best practicesYou areExperienced in designing, implementing, and testing superior softwareComfortable continuously delivering code, infrastructure, tests and features to productionExcited about finding new and better ways to make software reliable, scale and performObsessed with finding edge cases, understanding requirements and design implications Proactive in monitoring running systems and troubleshooting production issuesAlways looking for ways to grow, opportunities to mentor and collaborate with peersYou haveHave 4+ years of experience building and designing systems with several lifecycles Extensive experience implementing secure APIs, highly available and observable servicesLed and mentored more junior software engineersKept tight control on multiple competing priorities and have strong ability to multitaskRaised the bar on every project you were involved in$150,000 - $220,000 a year-----------------------------------------Finix is an equal opportunity employer and values diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status, or any other protected class.Role: Software Engineer III/IVLevel: IC3-IC4Location: San Francisco, CABase Salary Range: $150,000/yr to $220,000/yr + equity + benefitsOur salary ranges are determined by role, level, and location. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries at our headquarters in San Francisco, California. Individual pay is determined by work location, job related skills, experience, and relevant education or training.Must be authorized to work in the U.S.; no visa sponsorship provided.We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.