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Fairfax, Virginia, United States of America
JOB #R2200053

Principal Full Stack Developer (Remote)

*We are open to supporting 100% remote work anywhere within the US.*

ICF’s IT Modernization division is a rapidly growing, entrepreneurial, technology department, seeking a Principal Full Stack Developer to support upcoming needs with our federal customers.

Our IT Modernization division is an information technology and management consulting department that offers integrated, strategic solutions to its public and private-sector clients. ICF has the expertise, agility, and commitment to design, build, and operate high-performance IT engines to support all aspects of our client’s business.

The Team:

Innovation, collaboration, transparency, sustainability: carrying out missions in the Federal government requires creative thinking and a multifaceted approach. As a key member of the team, you will partner with technology leads throughout ICF to raise the bar on our ability to deliver quality applications and services at high velocity.

The Work

The Tailored Platform Support Services (TPSS) team supports over 30 applications ranging in scope from licensing and application processing to supply chain management. There are several efforts in the pipeline that will require immediate staffing. The TPSS team supports the federal government in these modernization efforts by conducting discovery, elicitation, and implementation of requirements.

The RoleThe Principal Full Stack Developer will play a key role in the modernization of the client’s mission-critical applications and work collaboratively with an 8–12-person Development Team to deliver value to the customer.


  • Participate in the full software development life cycle (design, development, deployment, documentation)

  • Contribute towards design and overall architecture of applications

  • Participate in development planning and goals

  • Maintain quality and ensure responsiveness of applications

  • Collaborate with other developers to design and launch new features

  • Introduce and enforce adherence to standards and best practices

  • Determine user needs by analyzing technical requirements

  • Oversee team members’ development and share constructive criticism

  • Must have the ability to work as part of a project team and deliver in a timely manner

  • Document changes and follow the Systems Development Life Cycle process independently

  • Willing to learn and adopt new technologies in a short period of time as required

  • Capability to lead the design of solutions for complex problems when needed

  • This position also requires regular communication with the customer to review software application requirements, provide progress status updates, and provide/propose technical solutions and architectural design for enhancements

Required Skills and Qualifications:

  • Bachelor's Degree in Computer Science, Computer Engineering, or related field of study.

  • 8+ years professional experience serving as a Technical Lead on large-scale modernization efforts

  • 5+ years of professional development experience working in a DevOps environment

  • The ideal candidate would have a holistic approach to architecture and the ability to define and work with all aspects of architecture.

  • Expert-level knowledge of AWS and cloud migrations

  • Demonstrated experience working with Jenkins, Gitlab, and Bamboo for DevOps

  • Development experience with Rest APIs, Java, Python, JavaScript, HTML, CSS, JSON, comfortable in both Linux/Unix and Windows environments

  • Development experience with JS frameworks React or Angular; at least working knowledge of Angular 11

  • Working knowledge of relational database design and Structured Query Language (SQL)

  • Strong English written and verbal communication skills.

  • US Citizenship is required due to federal contract requirements

  • Must be able to obtain Public Trust clearance

Desired Skills and Qualifications:

  • Experience on projects that migrated a legacy Sybase DB to a Postgres DB

  • Experience integrating applications with Okta for SSO / Authentication

  • Experience with converting a COBOL-based monolithic application to a microservice-oriented application

  • Working knowledge of MuleSoft Anypoint Platform and MuleSoft architecture

  • Experience setting up a CI/CD

  • Asynchronous JavaScript development

  • JS Frameworks, CSS/Bootstrap

  • UX/UI best practices

  • GIS-centric applications experience

  • Able to work in a lean development environment

  • Able to self-learn and develop on multiple technologies

  • Able to take full ownership of a product 

Working at ICF

Working at ICF means applying a passion for meaningful work with intellectual rigor to help solve the leading issues of our day. Smart, compassionate, innovative, committed, ICF employees tackle unprecedented challenges to benefit people, businesses, and governments around the globe. We believe in collaboration, mutual respect, open communication, and opportunity for growth.

We can only solve the world's toughest challenges by building an inclusive workplace that allows everyone to thrive. We are an equal opportunity employer, committed to hiring regardless of any protected characteristic, such as race, ethnicity, national origin, color, sex, gender identity/expression, sexual orientation, religion, age, disability status, or military/veteran status. Together, our employees are empowered to share their expertise and collaborate with others to achieve personal and professional goals. For more information, please read our EEO & AA policy.

COVID-19 Policy: New or prospective U.S. employees must provide proof of complete vaccination on the date of their commencement of employment. If selected for employment, you will provide proof of your full vaccination status, defined as vaccinated two weeks after receiving the requisite number of doses of a COVID-19 vaccine approved or authorized for emergency use by the FDA.

Reasonable Accommodations are available, including, but not limited to, for disabled veterans, individuals with disabilities, and individuals with sincerely held religious beliefs, in all phases of the application and employment process. To request an accommodation please email and we will be happy to assist. All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodations. Read more about non-discrimination:  EEO is the law and  Pay Transparency Statement.

Virginia Remote Office (VA99)

Who is ICF?

A global consulting services company with +7,000 people across +70 countries, but we are not your typical consultants.

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Join our talent network

ICF is growing, and we add new open roles to our site regularly. If you're waiting for that perfect opportunity at ICF or want an inside look at what it's like to do world-changing work, join our talent network to stay updated.

Join our talent network

ICF is growing, and we add new open roles to our site regularly. If you're waiting for that perfect opportunity at ICF or want an inside look at what it's like to do world-changing work, join our talent network to stay updated.