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LottieFiles logo
LottieFiles

Bringing the power of motion to apps, web, social & more. A platform to create, collaborate & ship Lottie animations.

Senior Full Stack Engineer – Workflow

Full-stack EngineerSoftware EngineerOtherRemoteSeniorTeam 51-200H1B No SponsorCompany SiteLinkedIn

Location

United States

Posted

101 days ago

Salary

0

Seniority

Senior

Bachelor Degree5 yrs expExperience acceptedEnglishGraphQLPostgreSQLReactReduxTypeScript

Job Description

Senior Full Stack Engineer – Workflow

LottieFiles

• Participate in shaping the technical vision for rebuilding our asset management platform from scratch • Design centralized data architecture with direct database integration and shared business logic reusable across SSR and future GraphQL. • Make critical architectural decisions including tech stack selection, state management patterns, data layer design, and performance optimization strategies. • Ensure future-proof architecture compatible with GraphQL migration while optimizing for immediate SSR performance • Define coding standards and best practices for the team, ensuring maintainable, scalable code • Collaborate with product and design teams to translate requirements into technical specifications • Build modern React-based apps with real-time capabilities using technologies like TanStack ecosystem, Server-Sent Events, and BroadcastChannel API • Build performant UI components with smooth data loading patterns, virtualization, and responsive user interactions • Optimize bundle size, lazy loading, and code splitting for <1s Time to Interactive • Build a shared business logic layer reusable across multiple service boundaries and rendering contexts • Design database schema and ORM integration • Develop background job processing systems for asynchronous workflows • Design and optimize performance-critical operations using systems-level programming and worker-based architectures to keep heavy processing off the main thread • Implement WASM modules for browser-based file processing with near-native performance • Build batch processing systems capable of handling large-scale concurrent operations efficiently • Profile and eliminate performance bottlenecks across critical data processing and transformation pipelines.

Job Requirements

  • 5+ years of professional software engineering experience, with significant full-stack work
  • Expert-level React and TypeScript with deep understanding of modern patterns and performance optimization
  • Strong backend development experience with direct database integration, and API design
  • Experience designing centralized business logic layers reusable across multiple platforms (SSR, APIs)
  • Database expertise: Schema design, query optimization, PostgreSQL
  • Production experience with real-time web technologies (WebSockets, SSE, WebRTC)
  • Deep understanding of web performance (Core Web Vitals, bundle optimization, lazy loading, code splitting)
  • Experience with state management at scale (Redux, Zustand, Jotai, Recoil, or similar)
  • Strong experience in systems-level programming for performance-critical applications, with proficiency in low-level optimization techniques including parallel processing, memory management, profiling, and benchmarking.
  • Experience building robust file processing systems including upload/download handling, media compression and format conversion, file validation, and quality checks.
  • Familiarity with cloud infrastructure, CI/CD pipelines, containerization, and monitoring/observability practices.

Benefits

  • Fully Remote Working Environment
  • Flexible Work Hours
  • A welcome gift and LottieFiles swag pack
  • Bonus to set up your workstation at home
  • Unlimited Leave Days
  • Medical Insurance
  • Generous learning budget
  • Gym membership
  • Co-working space membership

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