{"id":766378,"url":"https://alion.io/job/payabli-senior-software-engineer-backend","title":"Senior Software Engineer, Backend","company":{"id":687692,"name":"Payabli","domain":"payabli.com","url":"https://alion.io/company/payabli","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":95,"open_postings":3,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":199,"computed_at":"2026-11-07T05:47:08Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":126000,"max_usd":218000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1195},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":".NET","optional":false},{"name":"AI Agents","optional":false},{"name":"C#","optional":false},{"name":"Rest API","optional":false}],"status":"live","first_seen_at":"2026-07-14T20:21:29Z","employer_posted_date":"2026-07-14","last_verified_at":"2026-11-08T02:30:08Z","board_verified":true,"closed_at":null,"days_open":116,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":115},"description":"Payabli is the Intelligent Fintech Operating System for software platforms. If you are a software company, you are a fintech company, and Payabli is your operating system. Built by payments industry and SaaS veterans and powered by its own models, Payabli gives platforms everything they need to embed, manage, and monetize financial services through a single developer-friendly API spanning Pay In, Pay Out, and Pay Ops. Intelligence is not a layer on top, it is the foundation, expressed through Amigo™, Payabli's native AI Agent Suite, and a growing set of capabilities that make payment operations smarter and more autonomous.\nPayabli gives software companies PayFac capabilities without the heavy lift, administrative burden, or cost of becoming a payment facilitator themselves. With PayFac-as-a-Service, embedded payment acceptance and issuance, and intelligent payment operations, platforms turn payments into a meaningful revenue stream while staying focused on their core product.\nPayabli is backed by world-class fintech investors including QED Investors, Fika Ventures, TTV Capital, and Bling Capital, and was recently named to the Forbes Fintech 50.\nFor more information, visit payabli.com.\nAbout the Role\nWe are looking for a Senior Software Engineer, Backend to join our team and help build the backend of Payabli's interfaces and integrations that sit between complex financial infrastructure and the humans who use it every day - merchant dashboards, onboarding flow, embeddable components, and white-label experiences consumed by our platform partners and their end users.\nIn this hands-on role, you'll design and build the services that power intelligent payment routing, connector management, token intelligence, and platform configuration. You'll work on complex, high-scale systems that enable merchants to optimize payment performance while building secure, extensible infrastructure for the future of payments.\nYou'll collaborate closely with Product, AI, and Engineering teams, mentor junior engineers, and play a key role in shaping the architecture of a platform used by substantial enterprise customers.\nWhat you will Do:\nDesign, build, and maintain scalable backend services using C#/.NET\n\nDevelop the core infrastructure that powers payment routing, connector management, and platform configuration.\n\nDesign secure, extensible APIs that support both customer-facing applications, direct integrations and AI-powered workflows.\n\nBuild reliable, observable services that process high-volume payment transactions with performance and resilience in mind.\n\nContribute to platform architecture, engineering standards, and technical decision-making.\n\nContinuously improve system performance, security, reliability, and developer experience.\n\nCollaborate closely with other service owning teams to integrate via APIs and real-time data streams, ensuring seamless data flow across the stack & overall platform\n\nRaise the bar: Lead code reviews, champion backend standards, and drive architectural decisions that keep the codebase healthy as we scale.\n\nMultiply the team: Mentor engineers around you and elevate backend engineering quality across the organization through pairing, documentation and leading by example.\n\nOwn the full lifecycle: Work across requirements, implementation, testing, and deployment. We don't throw things over the wall here.\n\nSweat the details: Optimize for performance, accessibility, and cross-browser compatibility.\n\nWhat we are looking for:\n5+ years of experience building production backend services.\n\nStrong experience with C# and the .NET ecosystem.\n\nStrong experience in Payments, FinTech, or other high-volume transaction processing environments.\n\nExperience designing and building RESTful and/or event-driven APIs.\n\nStrong understanding of relational databases, data modelling, and distributed systems.\n\nExperience building secure, scalable cloud-based applications.\n\nExcellent problem-solving, communication, and collaboration skills.\n\nAbility to provide technical leadership while remaining hands-on in development.\n\nWe think you'll love being part of our team because\nAtPayabli, you'll have a front row seat into building a high-growth venture backed fintech company. As a senior leader in Operations, you'll shape how the organization scales and be the driving force behind our AI-first operations strategy - directly influencing how we build, automate, and optimize for the future. You'll stretch yourself every day, learn a ton, grow alongside the company, and have a lot of fun building Payabli with us. We're a values driven company that cares deeply about our team, partners, and customers. Our north star values are:\nTeam Love = Customer Love - You understand that when you build great products for your internal partners, they deliver exceptional experiences to merchants. You obsess over the platform partners and businesses that depend on every payout landing on time.\nRun to the Fire - When ACH returns spike or a card program hits a snag, you're the first one in the war room. You don't shy away from hard problems-you chase them. You volunteer for the complex, messy challenges others avoid.\nLittle Things Count - You sweat the details because you know a single decimal error in a payout can damage a business. You double-check edge cases, validate every assumption, and understand that excellence lives in the details.\nTruth Seekers - You give direct feedback, receive it with grace, and never let ego get in the way of finding the right answer. You document what you don't know, admit mistakes quickly, and hold yourself accountable in the open.\nRelentlessly Curious - You're constantly asking \"what if?\" and \"why not?\" You study how competitors solve problems, explore adjacent industries for inspiration, and never stop learning about the payments ecosystem.\nWe build technology that gets noticed and a workplace where people want to grow their careers. Our work has been recognized by some of the industry’s most respected organizations, including being named No. 43 on the 2026 Inc. 5000, marking ourthird consecutive year on the list. Payabli was also named to the 2026 Forbes Fintech 50, recognizing the most innovative private companies in financial technology, Inc.’s 2025 Best Workplaces, andBuilt In’s 2026 Best Places to Work in Miami.\nWhat we can offer you\nCompetitive salary\n\nStock options with the potential to unlock more equity as we grow\n\nFlexible PTO and paid parental leave\n\nMedical, dental, & vision insurance\n\n401K, HSA, pre-tax savings programs\n\nPayabli is an equal opportunity employer and values a diverse, inclusive workplace.\nPrincipals only. No external agency submissions. 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