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Staff Full Stack Engineer

eSimplicity

$134,500 - $193,300
Nov 21, 2025
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eSimplicity is seeking a Staff Full Stack Engineer to help develop solutions in full for their client's highly visible web application, from high-level system design, and configuration to application development and backend service integration.

Requirements

  • Expert-level proficiency in the following languages: Typescript, Javascript, Python
  • Expertise with modern web application frameworks such as React.js, Next.js, Node.js, Flask, Playwright, Poetry, OpenAPI, Trussworks USWDS, Storybook, Tailwind CSS, Tanstack React-Query, Pydantic, Imposter Mocks
  • Deep understanding of APIs, and familiarity with JSON, Web APIs, REST APIs, JSON-RPC, XML-RPC, RESTful practices
  • Experience working with Redis
  • Experience with Docker containerization and deployments
  • Extensive experience using Gitlab and CI/CD platforms to deliver safe releases at a rapid rate.
  • Experience in AWS cloud architecture (e.g. Cloudwatch, Cloudtrail, EKS, S3)

Responsibilities

  • Staff developer on a team that designs, creates, and builds web application features; creates back-end code and interfaces for new web platforms; analyzes user needs to implement front-end design, graphics, performance, and capacity; integrates applications with other platforms/services as needed
  • Translates designs and wireframes into reusable, testable and efficient front-end code
  • Builds, iterates, and tests scalable, back-end APIs for web applications
  • Provides production support, on-call support, maintenance, and enhancements to the existing system
  • Quickly adopts to new programming tools, frameworks, and techniques
  • Authors friendly documentation (e.g., API documentation, deployment operations)
  • Experience using modern, open-source software frameworks to prototype and deploy full-stack web applications

Other

  • This role is contingent upon successful Moderate Risk Public Trust (MRPT) clearance
  • Must be a United States citizen
  • Ability to obtain and maintain a Public Trust clearance
  • Prior experience supporting federal government contracts as a contractor or government employee.
  • Strong documentation and problem-solving skills