Mobile Application Developer jobs in United States

Our client is building a governance, privacy, and AI compliance platform for regulated organizations. They already have a working MVP and are now scaling into production pilot deployments and an enterprise-ready phase. They’re looking for a full-stack engineer who can own product UI delivery (dashboards, workflows) while also contributing to platform hardening, integrations, and upcoming migrations.

• Product & UI (Primary)
  • Build and maintain the web app: React dashboards, workflow screens, configuration/admin interfaces
  • Deliver high-quality UX: responsive layouts, consistent UI patterns, accessibility basics, and performance tuning
  • Implement interactive data experiences: charts, tables, filters, drilldowns, exports
• APIs & Integrations (Core)
  • Integrate with REST APIs and external services: auth flows, request/response mapping, error handling, retries, timeouts
  • Contribute to API design patterns: consistency, pagination, versioning, idempotency, rate-limit awareness
  • Build/maintain integration-heavy workflows: webhooks, event-driven patterns, background processing (where applicable)
• Enterprise Readiness (Strategic)
  • Support platform hardening: auditability, reliability, security posture, operational readiness
  • Contribute to data layer evolution and migration planning (e.g., MongoDB → PostgreSQL): schema thinking, migration strategy, integrity and performance considerations
  • Support cloud migration readiness (AWS/Azure): environment management, secrets, deployments, observability basics
  • Assist with edge/security tooling where relevant (e.g., Cloudflare or equivalent)

• Strong React experience shipping SaaS product UI (dashboards/workflows), modern hooks patterns
• Strong JavaScript (ES6+) and professional engineering practices (Git, PRs, reviews)
• Confident integrating REST APIs in production: auth patterns (JWT/OAuth-style), robust loading/error states, retries/timeouts, defensive programming, edge case handling
• Solid UI engineering capability: componentization, responsive CSS, UI consistency and polish
• Good backend fundamentals: can read/write server code, reason about data models, and collaborate on API contracts
• Strongly Preferred TypeScript (or strong willingness to work in a TS migration)
• Experience with a modern backend runtime (Node.js/Express preferred; similar acceptable)
• Data-heavy applications: charts, analytics, reporting, admin tooling
• Database competence: SQL fundamentals (PostgreSQL preferred), schema/index basics, query performance awareness; familiarity with MongoDB/document modeling concepts
• State/data fetching patterns: React Query / TanStack Query (or equivalent)
• Testing discipline: unit/integration testing (Jest/RTL; Playwright/Cypress a bonus)
• CI/CD familiarity and environment separation (dev/stage/prod)

• Experience with NoSQL → SQL migrations (Mongo → Postgres or similar)
• Cloud exposure: AWS or Azure (deployments, secrets, basic networking concepts)
• Observability awareness: logging/metrics/tracing and debugging production issues
• Cloudflare (or similar): CDN/WAF, basic edge/security controls
• Multi-tenant SaaS patterns (tenant isolation, tenancy-aware auth, data partitioning)
• Docker fundamentals

They want someone who can operate with ownership and ambiguity. Ideal profile: 5–8+ years engineering experience (or equivalent capability). Has shipped production SaaS UI and handled integration-heavy work. Comfortable making pragmatic architecture decisions and improving an existing codebase.

• Take ownership of core UI surfaces and ship meaningful dashboard/workflow improvements
• Improve API integration quality (error handling, data transformations, reliability patterns)
• Contribute to an enterprise readiness plan: API consistency, security basics, operational hardening
• Help shape the migration path for the data layer (MongoDB → PostgreSQL) and cloud readiness priorities

• React UI build quality (component structure, state management, performance, UX detail)
• API integration robustness (auth, failures, retries, transformation)
• Data thinking (schemas/models, dashboard logic, exports, integrity)
• Practical architecture judgment (tradeoffs, maintainability, delivery speed)
• Collaboration (PR hygiene, communication, documentation)

Frontend: React (dashboard/workflow UI), styled-components, charts (Recharts/Chart.js), Framer Motion. Integration: REST APIs, external services, webhook/event patterns as needed. Backend: Node/Express-style services (or equivalent), API-first. Data: MongoDB today; planning evolution toward PostgreSQL for enterprise readiness. Cloud/Edge: AWS/Azure.