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Sr. Applications Developers
multiple positions
Washington DC

The Environmental Protection Agency (EPA) Central Data Exchange (CDX) is the Agency's electronic reporting site. The Central Data Exchange concept has been defined as a central point which supplements EPA reporting systems by performing new and existing functions for receiving legally acceptable data in various formats, including consolidated and integrated data.

We are in need of Sr. Applications Developers to support the EPA CDX mission. The project is a Service Oriented Architecture-based network that handles the exchange of environmental data between EPA and its stakeholders (states, tribes, municipalities, private industry). The program builds, operates, and maintains this network and is responsible for building the data flows and environmental applications that operate on and integrate on the network.

The right candidate will have strong development skills, as well as experience in a client-facing role, and as a leader/mentor to junior developers.


The Senior Developer will be responsible for assisting multiple project teams in architecting solutions, determining appropriate coding strategies and tools, and ensuring quality products are produced. Other responsibilities include:

  • Proposal of technical architecture
  • Leading technical design
  • Writing and reviewing source code
  • Participation in testing efforts
  • Troubleshooting technical issues
  • Leading a technical team
  • Direct interaction with clients


  • Minimum 10 years experience in software development and IT consulting.
  • Development team management experience
  • Consulting experience
  • Experience with Java as primary language, including Spring, Hibernate, Tomcat, Maven, and Git. Spring Boot and Docker experience a plus.
  • Experience building and supporting applications that follow a Single-Page Architecture framework (e.g., Knockout, Angular, etc)
  • Strong JavaScript skills
  • Oracle Database experience required; MongoDB experience a plus
  • Experience using IaaS and PaaS offerings (e.g., Azure, AWS, etc)
  • Experience authoring and consuming SOAP and REST web services
  • Providing technical solutions to clients
  • Can work well balancing multiple assignments
  • Knowledge of the full software life cycle
  • Knowledge and experience with Agile development methodology
  • Bachelor’s degree in Computer Science, Computer Engineering, or other technical discipline
  • Excellent communication skills are a must (writing, presenting, etc.)
  • The ability to work in the US indefinitely (US citizenship or Permanent Resident/EAD)

Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information.


Apply online at


Since 2009, Cherokee Nation Technologies (CNT) has been serving government clients with time-tested solutions that increase client effectiveness through the intelligent use of technology. CNT’s expertise includes software and application services, network services, and business process services. The company is headquartered in Tulsa, Oklahoma, with a regional office in Ft. Collins, Colorado, and client locations nationwide. Wholly owned by the Cherokee Nation, CNT is part of the Cherokee Nation Businesses family of companies.

We are an equal opportunity/affirmative action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran status, gender identity and sexual orientation. If you’d like more information about your EEO rights as an applicant under the law, please copy and paste the links to the following two sites:


If you are an individual with a disability and require a reasonable accommodation to complete any part of the application process, or are limited in the ability or unable to access or use this online application process and need an alternative method for applying, you may e-mail for assistance. This email address is for accommodation requests only and cannot be used to inquire about the application process or status.


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We maintain an Affirmative Action Plan for the purpose of proactively seeking employment and advancement for qualified protected veterans and individuals with disabilities. Upon request, we will schedule time to make our Affirmative Action Plan accessible. If you are interested, please submit a written request with the email subject line: 2018 Request to View Affirmative Action Plan to the Compliance Administrator at This email box is not for resumes or follow up on job applications.