{"id":3710571,"url":"https://alion.io/job/finalsite-senior-software-engineer-payment-processing-contract","title":"Senior Software Engineer - Payment Processing - Contract","company":{"id":699653,"name":"Finalsite","domain":"finalsite.com","url":"https://alion.io/company/finalsite-2","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"JobScore","truth_index":{"grade":"B","score":75,"open_postings":4,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":28,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"contractor","work_mode":"remote","remote_scope":"stated_regions","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":["Brazil"],"countries":["BR"],"hiring_countries":["US","AR","BR","CO","MX","AI","AG","AW","BS","BB","BZ","BM","BO","VG","BQ","KY","CL","CR","CW","DM","DO","EC","SV","FK","GF","GD","GP","GT","GY","HT","HN","JM","MQ","MS","NI","PA","PY","PE","PR","KN"],"hiring_countries_total":49,"salary":null,"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Azure","optional":false},{"name":"Claude Code","optional":false},{"name":"Datadog","optional":false},{"name":"Honeycomb","optional":false},{"name":"Java","optional":false},{"name":"New Relic","optional":false},{"name":"PCI DSS","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"C#","optional":true}],"status":"live","first_seen_at":"2026-11-03T18:35:49Z","employer_posted_date":"2026-11-03","last_verified_at":"2026-11-04T23:04:30Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"WHO WE ARE\nFinalsite is the most valued partner for K-12 schools to build trust, strengthen community, and grow enrollment. Ranked among the best EdTech Companies in America, Finalsite supports more than 7,000 schools and districts worldwide with an integrated platform for websites, communications, mobile apps, enrollment, and marketing services.\nHeadquartered in Glastonbury, Connecticut, Finalsite is a global company with employees working remotely across nearly every U.S. state, as well as throughout Europe, South America, and Asia.\nWe believe people do their best work when they feel supported, connected, and empowered to grow. That’s why we invest in our employees through competitive benefits, professional development opportunities, and a collaborative culture built on partnership and purpose. Whether you’re looking to expand your skills, take on new challenges, or make a meaningful impact in education, Finalsite offers the opportunity to grow your career while helping schools thrive.\nAt Finalsite, every interaction matters - with our clients, with each other, and with the schools and families we serve. Join us and help shape stronger school communities around the world\nSUMMARY\nFinalsite's payment processing engine is the reconciliation and transaction-processing layer behind its payments business, and it carries some of the most consequential technical debt in the portfolio: no end-to-end transaction tracking, largely manual reconciliation, and two parallel versions of the engine running against separate processor integrations. Reaching baseline automated reconciliation is a substantial, multi-quarter effort already underway.\nThis is foundational, high-visibility work: closing a real reconciliation gap and helping build the engine into a modern platform, with real reconciliation, fraud detection, and chargeback management, that can scale with a growing payments business.\nLOCATION\n100% Remote - Anywhere in LatAm\nRESPONSIBILITIES\nDesign and build toward automated, end-to-end transaction lifecycle tracking, replacing today's manual reconciliation process\nHelp build out fraud detection, chargeback management, and other automated payment functions the platform doesn't have today\nWork across the engine's two parallel versions and processor integrations to resolve mismatches and reconciliation gaps\nPartner with the storefront team to expose data that closes reconciliation gaps\nFocus on quality, core-flow stability, and scalability as transaction volume grows\nHelp plan, and contribute to, a shared payments-unification layer across the payment processing engine, storefront, and events platform\nUse AI-assisted development tools (Claude Code, Codex, or comparable) to navigate a large, undocumented, multi-repository codebase\nQUALIFICATIONS AND SKILLS\n8+ years of overall engineering experience, including strong backend engineering experience, ideally including financial reconciliation, ledger, fraud, or transaction-processing systems\nHands-on PCI compliance experience: familiarity with PCI-DSS requirements as they apply to transaction processing and reconciliation\nBachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience\nComfort working in a large, non-microservices codebase spanning many repositories without modern service boundaries\nDemonstrated ability to trace and reason about data across disconnected systems\nComfort making backend architecture decisions independently: service boundaries, data modeling, and system-design trade-offs\nExperience with third-party payment processor integrations, including running two integration versions in parallel\nStrong backend engineering fundamentals with a .NET / SQL Server-based stack, or a demonstrated ability to ramp quickly in one\nWorking knowledge of relational database design and operations (SQL Server): schema design, query-performance tuning, and locking behavior at production scale\nFamiliarity with running and debugging a production service in a cloud environment (Azure preferred)\nDemonstrated expertise in at least one programming language, ideally .NET, Java, or Python\nExperience with at least one observability platform (Datadog, New Relic, Honeycomb, or comparable)\nDeep experience with automated testing frameworks\nProficiency with Claude Code, Codex, or comparable AI-assisted development tools\nPREFERRED\nExperience with .NET or Java specifically\nDeep experience with Azure\nExperience building reconciliation, ledger, fraud-detection, chargeback, or other payment-operations systems specifically\nPrior work consolidating or migrating between two parallel versions of the same system\nBackground in payments or fintech, particularly high-volume environments\nRESIDENCY REQUIREMENT\nFinalsite offers 100% fully remote employment opportunities, however, these opportunities are limited to permanent residents of the United States. Current residency, as well as continued residency, within the United States is required to obtain (and retain) employment with Finalsite.\nDISCLOSURES\nFinalsite is proud to be an equal opportunity workplace and is an affirmative action employer. We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status. We also consider qualified applicants regardless of criminal histories, consistent with legal requirements. EEO is the Law. If you have a disability or special need that requires accommodation, please contact Finalsite's People Operations Team. Finalsite is committed to the full inclusion of all qualified individuals. As part of this commitment, Finalsite will ensure that persons with disabilities or special needs are provided a reasonable accommodation. Ensure your Finalsite job offer is legitimate and don't fall victim to fraud. Ask your recruiter for a phone call or other type of verbal communication and ensure all email correspondence is from a finalsite.com email address. 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