Senior Full Stack Engineer
Company: eSimplicity
Location: Columbia
Posted on: February 20, 2026
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Job Description:
Job Description 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 work
directly with our customers to build compelling effective solutions
that meets or exceeds our customer business objectives.
Responsibilities: Designs, creates, and builds application(s) and
features in Java Spring Boot; creates back-end code and interfaces
for new applications; analyzes user needs to implement front-end
design, graphics, performance, and capacity; integrates
applications with other platforms as needed. Experience in Spring
Boot and Spring Security Collaborates with other team members
across multiple functional areas (engineering, DevOps, UX, Product,
Scrum Master) Experience with building and operating API’s (JSON,
Web APIs, REST APIs, and XML RESTful practices, and GraphQL)
Experience with deploying Java Spring Boot services /applications
on AWS Gov. Cloud (DevSecOps and FinOps) Authors friendly
documentation (e.g., API documentation, deployment operations).
Quickly adopts new programming tools, frameworks, and techniques.
Translates designs and wireframes into reusable, testable and
efficient front-end code Builds, iterates, and tests scalable,
back-end APIs for web applications Designs and develops data models
to optimize data access 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.
Collaborates and builds customer relationships on a foundation of
trust and effectiveness. 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, Springboot, Spring Security Deep
understanding of APIs, and familiarity with JSON, Web APIs, REST
APIs, JSON-RPC, XML-RPC, RESTful practices, and GraphQL Solid
experience with implementing, deploying, and maintaining both
relational and non-relational databases like SQL, MySQL,
PostgreSQL, MongoDB or similar 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 and cloud best practices
(DevSecOps (Terraform), FinOps) Experience working on fully
integrated cross-functional Agile product teams. Experience with
benchmarking, monitoring, and performance engineering applications
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 Experience with Atlassian
Jira/Confluence. 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 effectively through presentations, white papers and
advisory roles. 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) Python programming experience preferred
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.
Keywords: eSimplicity, Cherry Hill , Senior Full Stack Engineer, IT / Software / Systems , Columbia, New Jersey
