Senior Full Stack Engineer

eSimplicity Inc.; Silver Spring (MD); Remote; USD 100,000 - 140,000; Full time

Job summary

A modern digital services company, eSimplicity, is seeking a Senior Full Stack Engineer to join their collaborative team. This position requires strong skills in languages like Typescript and Javascript, design frameworks, and agile methodologies to develop impactful solutions for government clients. Enjoy a competitive salary, full healthcare benefits, and the opportunity to work in a remote environment within the Eastern time zone.

Benefits

Highly competitive salaries

Full healthcare benefits

Qualifications

• Minimum of 7 years related experience required.
• Experience in Agile product teams smaller than 10 people.
• Ability to communicate technical information to non-technical audiences.

Responsibilities

• Designs, creates, and builds web application features.
• Collaborates closely with designers to translate complex UI/UX wireframes.
• Participates in Agile processes and provides support to existing systems.

Skills

Expert-level proficiency in Typescript

Expert-level proficiency in Javascript

Expert-level proficiency in Python

Proficiency in front-end tooling

Experience with modern web application frameworks

Deep understanding of APIs

Strong problem-solving skills

Excellent command of written and spoken English

Tools

Docker

Git

AWS

Job description

Description

About Us:

eSimplicity is modern digital services company that work across government, partnering with our clients to improve the lives and ensure the security of all Americans—from soldiers and veteran to kids and the elderly, and defend national interests on the battlefield. Our engineers, designers and strategist cut through complexity to create intuitive products and services that equip Federal agencies with solutions to courageously transform today for a better tomorrow for all Americans.

Purpose and Scope:

We are seeking a Senior Full Stack Engineer to join a cross-functional, entrepreneurial, collaborative team dedicated to solving difficult problems for our client. In this role, you will help develop a solution in full, from high-level system design and configuration to application development and data integration. You will leverage everything around you: core company products, open-source technologies, and anything you and your team can build to drive real impact.

Responsibilities:

• 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 as needed.
• Collaborates with other team members across multiple functional areas (engineering, DevOps, UX, Product, Scrum Master)
• Collaborates closely with designers to translate complex UI/UX wireframes into responsive, accessible, and performant web interfaces.
• Implements reusable UI components using modern design systems and component libraries (e.g., TailwindCSS, ShadCN, Chakra UI).
• Works with JSON Schema-driven form and UI rendering technologies (e.g., React JSON Schema Form).
• Drives consistency and quality across front-end implementations in multi-app or microfrontend environments.
• Authors friendly documentation (e.g., API documentation, deployment operations).
• Quickly adopts new programming tools, frameworks, and techniques.
• Understands and accounts for the challenges involved in managing access to and usage of large data sets
• Translates designs and wireframes into reusable, testable and efficient front-end code
• Builds, iterates, and tests scalable, back-end APIs for web applications
• Integrates 2nd and 3rd party platforms and APIs
• Participates in Agile processes including daily standups, demos, retrospectives, and sprint planning
• Works closely with product owners, business analysts, designers, and engineers to gather, refine and implement business requirements
• Provides support, maintenance, and enhancements to the existing system
• Collaborates with a fully integrated Agile team to deliver continuous improvement to designs, processes, and standards.
• Other duties as needed

Requirements

Required Qualifications:

• Minimum of 7 years related experience.
• Expert-level proficiency in at least one of the following languages: Typescript, Javascript, Python
• Proficiency in front-end tooling such as Vite, Webpack, Storybook, ESLint, Prettier.
• Experience building dynamic forms and admin panels using JSON Schema and React-based builders.
• Experience with Tailwind CSS, CSS-in-JS patterns, and responsive mobile-first development.
• Familiarity with web accessibility (WCAG) and performance optimization best practices.
• Expertise with modern web application frameworks such as React.js, Next.js, Node.js, Flask, Playwright, Poetry, OpenAPI,
• Experience with testing frameworks and tools such as Tailwind, and Cucumber
• Deep understanding of APIs, and familiarity with JSON, Web APIs, REST APIs, JSON-RPC, RESTful practices, and GraphQL
• Experience working with Redis
• Experience using modern, open-source software frameworks to prototype and deploy full-stack web applications, including all aspects of server-side processing, data storage, networking, content delivery, and monitoring.
• Experience with Docker containerization and deployments
• Extensive experience using Git and CI/CD platforms to deliver safe releases at a rapid rate.
• Experience in AWS cloud data architecture
• Experience working on a fully integrated Agile product team smaller than 10 people.
• A demonstrated preference for the “correct” amount of unit and integration tests, across a variety of platforms.
• Strong documentation and problem-solving skills
• Flexible and willing to accept a change in priorities as necessary.
• Ability to work in a fast-paced, team-oriented environment
• Excellent command of written and spoken English.
• Ability to obtain and maintain a Public Trust, residing in the United States
• Communicates technical information to non-technical audience.

Desired Qualifications:

• Knowledge of AuthN and AuthZ systems, including Okta, OAuth, SAML and AWS IAM Policies/Roles using attribute-based access controls
• Knowledge of message queues/buses and their associated design patterns (Kinesis, Kafka, RabbitMQ, NATS)
• Experience with design systems
• Experience with federated design or microfrontend architecture.
• Familiarity with Storybook or other tools for documenting component behavior.
• Knowledge of headless CMS systems like Strapi, Sanity, or Directus.
• Experience with AI/Agent Platforms such as LangChain, LangGraph, etc

Desired Qualifications:

• Experience with one of the major cloud service providers (AWS preferred)
• Experience with JS frameworks such as ReactJS and AngularJS (ReactJS preferred)
• Experience with HTML, CSS, Javascript, and Typescript
• Experience with Node.js
• Deep understanding of APIs, and familiarity with JSON, Web APIs, REST APIs, JSON-RPC, XML-RPC, RESTful practices, and GraphQL
• Experience with Docker containerization and deployments
• Experience in relational and non-relational databases like SQL, MySQL, NoSQL, PostgreSQL, MongoDB or similar
• Experience with benchmarking, monitoring, and performance engineering applications with tools such as Grafana, Sentry, and Prometheus
• Knowledge of AuthN and AuthZ systems, including Active Directory, Okta, and AWS IAM Policies/Roles using attribute-based access controls
• Knowledge of automated end-to-end unit tests and testing platforms
• Strong documentation and problem-solving skills
• Experience with Git and AWS DevOps
• Strong verbal and nonverbal communication skills

Working Environment:
eSimplicity supports a remote work environment operating within the Eastern time zone so we can work with and respond to our government clients. Expected hours are 9:00 AM to 5:00 PM Eastern unless otherwise directed by your manager.
Occasional travel for training and project meetings. It is estimated to be less than 25% per year.

Benefits:
We offer highly competitive salaries and full healthcare benefits.

Equal Employment Opportunity:
eSimplicity is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, gender, age, status as a protected veteran, sexual orientation, gender identity, or status as a qualified individual with a disability.