{"id":3418610,"url":"https://alion.io/job/aspenview-technology-partners-sr-web-app-developer-full-stack-payments","title":"Sr. Web App Developer (Full-Stack) – Payments","company":{"id":4431613,"name":"AspenView Technology Partners","domain":"aspenviewtech.com","url":"https://alion.io/company/aspen-view-tech","size_band":null,"is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Buenos Aires, Argentina"],"countries":["AR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":true,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"Claude Code","optional":false},{"name":"Copilot","optional":false},{"name":"Cypress","optional":false},{"name":"Figma","optional":false},{"name":"Playwright","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Rest API","optional":false},{"name":"TypeScript","optional":false},{"name":"API Gateway","optional":true},{"name":"AWS CDK","optional":true},{"name":"CI/CD","optional":true},{"name":"GitHub Actions","optional":true},{"name":"SQL","optional":true}],"status":"live","first_seen_at":"2026-10-28T18:41:11Z","employer_posted_date":"2026-10-28","last_verified_at":"2026-11-04T03:36:08Z","board_verified":true,"closed_at":null,"days_open":6,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":6},"description":"Build the Future with AspenView Technology Partners\nAt AspenView, we are passionate about transforming the way organizations approach technology. We specialize in creating high-performing, nearshore IT teams to help North American clients innovate faster and more efficiently.\nAs we continue to grow, we’re looking for exceptional people to join our team and help drive impactful change across industries.\nWhy Join AspenView?\nAt AspenView, we’re more than a nearshore IT partner-we’re a people-first, purpose-driven company that believes great culture drives great outcomes. We’re passionate about connecting talent and technology to deliver measurable value for clients-and meaningful career paths for our people.\nHere’s what you can expect:\nCompetitive base\nFlexible work model: hybrid, remote, or in-office\nReal growth opportunities and leadership visibility\nInclusive, respectful culture that blends U.S. innovation with Colombian heart\nA company that listens, invests in you, and celebrates wins together\nWe’re looking for a Senior Web App Developer (Full-Stack) - Mobile-First Payments to help a leading U.S. multifamily residential company replace its vendor parking app with a product built in-house. You’ll build the resident and site-team experience on top of the existing Parking API, move every community off the old platform, and work side by side with the client’s Product, design and operations teams. The goal isn’t just to launch a new app. It’s to own it in production and make it work better than the one it replaces.\nWhat you will do:\nProduct & UI Engineering\nBuild the resident and site-team parking experience (search, reserve, assign, pay and manage) in React and TypeScript, mobile-first\nMap each existing vendor flow and work with Product and design to decide what to keep, fix or drop\nDeliver screens that meet WCAG 2.1 AA accessibility standards and the security standards for payment and vehicle data\nAPI & Backend Development\nConnect the UI to the existing Parking API using its OpenAPI contract\nDesign and build missing REST endpoints with TypeScript, AWS Lambda and PostgreSQL\nMigration & Rollout\nPlan and carry out the move off the vendor platform, running both UIs in parallel\nMigrate data and roll out community by community, using feature flags and a clear rollback path\nQuality & Production Ownership\nWrite unit, component and end-to-end (Playwright) tests for the money and reservation flows\nMonitor logs and alarms, fix defects, and resolve site-team issues end to end\nUse AI coding assistants (Claude Code, GitHub Copilot) as part of your daily workflow\nTools & Technologies:\n Platforms & Infrastructure: React, TypeScript, PostgreSQL, REST APIs, OpenAPI (generated clients), Playwright / Cypress, Figma (design system work is a plus)\n Security & DevSecOps: WCAG 2.1 AA, secure handling of payment and vehicle data, PCI-scoped UIs (a plus), OAuth / AWS Cognito, logging and alarm monitoring, feature flags\n Cloud & IaC: AWS Lambda, API Gateway, Cognito, AWS CDK (a plus), CI/CD with GitHub Actions (a plus)\nWhat you bring: Experience:\nExperience: 5+ years building production web apps, including 3+ years with React and TypeScript. You’ve shipped a mobile-first, customer-facing app that handles bookings, payments or similar transactions.\n Full-Stack & Cloud: You’re comfortable writing REST endpoints and SQL queries, and you have hands-on experience with AWS serverless (Lambda, API Gateway, Cognito or a similar OAuth setup).\nMigration Expertise: You’ve replaced or migrated a live system with no downtime, using feature flags, phased rollouts or parallel runs.\nConsulting / Leadership: You communicate clearly and work well with Product, design and non-technical operations users, and you’re comfortable guiding decisions about what to keep, fix or drop.\nMindset: You take ownership, build tests into your work, enjoy an AI-assisted workflow, and stay accountable for what you ship in production.\nNice to have: Background in parking, mobility, property management or multifamily residential; payment processing and PCI experience; familiarity with MRI or a similar property-management system; experience with AWS CDK and GitHub Actions; experience building a component library from Figma designs.\nLocation: LATAM and able to work US business hours\nVisa Sponsorship\nAspenView does not sponsor employment visas for this role. Applicants must be permanently authorized to work in their country of residence and must not require visa sponsorship now or in the future.\nEqual Opportunity Employer\nAspenView is proud to be an equal opportunity employer. We believe in creating an environment where all employees feel welcome, valued, and empowered to succeed. We celebrate diversity and strive to build a culture of inclusion where all individuals, regardless of their race, color, gender, gender identity or expression, sexual orientation, disability, age, or any other characteristic, can thrive. 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