Junior Full Stack Developer

Unissant, Inc.

delivers innovative capabilities to the agencies that keep our nation healthy and safe.

We apply our domain expertise, data acumen, and technology know how to achieve breakthrough results for our clients.

Working collaboratively, we advance missions and careers through a focus on honesty, integrity, and dependability.

We continuously look for talent, excited to join that effort.

To learn more about our organization, please visit us at are seeking a Junior Full Stack Developer to join our team in Ashburn, Virginia, to support the modernization and maintenance of mission critical systems and AI/ML enabled capabilities for federal customers.

Qualified applicants may be subject to a security investigation and must meet minimum qualifications for access to sensitive or classified information.

This is a technical position; individuals will be evaluated on foundational skills, hands on experience, and potential to grow into more senior responsibilities.

nEssential Duties and ResponsibilitiesnThe candidate will be responsible for:nnImplementing and enhancing features in modern cloud-based applications using common frontend frameworks (such as Angular, React, or similar) and backend services (such as Java, Python, or Node.js) under the guidance of senior developers.

nBuilding and maintaining RESTful APIs and backend services using a mainstream server-side framework (for example Spring Boot, .NET, or equivalent) and working with relational or NoSQL databases.

nAssisting with support and incremental improvement of existing applications and services, including bug fixes, minor enhancements, and performance tuning; this may include legacy JEE applications on application servers as well as modernized services.

nWriting clean, maintainable, and well-documented code following established coding standards, testing practices, and design patterns.

nParticipating in Agile ceremonies (stand-ups, sprint planning, reviews) and collaborating with product owners, designers, users, and data/ML teams to understand requirements and refine solutions.

nContributing to code reviews, unit/integration testing, and troubleshooting issues across the stack, including application, data, and basic infrastructure layers.

nSupporting AI/ML initiatives by integrating existing machine learning services or models into applications, working with APIs, and helping instrument applications for data collection and monitoring.

nAssisting data and ML engineers with basic data preparation tasks such as querying, cleaning, and transforming datasets used for analytics and model development.

nCollaborating with senior engineers to learn system architecture, DevOps and MLOps practices, secure coding standards, and approaches for deploying and monitoring AI-enabled features in production.

nnWork Experience and Job SkillsnRequired:nn0–3 years of hands-on software development experience (professional, internship, or substantial academic/side projects) using at least one modern programming language such as Java, Python, JavaScript/TypeScript, or C#. nStrong foundation in object-oriented programming, data structures, and algorithms, with practice implementing and optimizing them in code (arrays, lists, trees, graphs, hash maps, queues, stacks, etc.). nExperience building or contributing to RESTful services or microservices using common frameworks; familiarity with API design, versioning, and documentation tools (such as Open API/Swagger or Postman). nExposure to modern frontend development with a JavaScript framework (for example Angular, React, or Vue), including HTML, CSS, and basic responsive design.

nFamiliarity with SQL and at least one relational or NoSQL database, including writing basic queries and understanding schema design fundamentals.

nFamiliarity with modern software engineering tools and methodologies, such as Git-based source control, CI/CD pipelines, automated testing, and issue tracking tools.

nStrong problem-solving skills, willingness to learn new technologies, and ability to collaborate effectively in a cross-functional, Agile team environment.

nnPreferred / AI/ML focused:nnExposure to or interest in AI/ML concepts such as supervised and unsupervised learning, model training and evaluation, and common libraries or platforms (for example scikit learn, TensorFlow, PyTorch, or cloud AI services). nExposure to data processing and analysis tools or languages (for example Python with Pandas, SQL-based analytics, or basic data visualization) and interest in working with datasets used for analytics or ML.

nUnderstanding of basic cloud concepts (such as containers, serverless functions, or managed databases) and interest in deploying applications or models on major cloud platforms.

nParticipation in coding competitions, open-source contributions, AI/ML courses, or relevant personal projects (such as small web apps, data analysis notebooks, or simple ML models) is a plus.

nnEducationnnBachelor's degree in Computer Science, Data Science, Engineering, Information Technology, or a related field with strong computer science coursework (data structures, algorithms, databases, operating systems), or equivalent practical experiencennCertificates, Licenses, and RegistrationsnnThis federal program requires the candidate to be a United States Citizen.nMust be able to obtain and maintain the appropriate Public Trust or other required federal clearance; existing suitability or clearance is a plus.

nAny related technical certifications (e.g., Java, cloud, or security) are desired but not required.

nnCommunication SkillsnnStrong written and verbal communication skills.

nAbility to clearly explain technical concepts to both technical and non-technical team members.

nDemonstrated ability to collaborate effectively within a team environment and take feedback constructively.

nnTravelnnThis is an onsite position in Ashburn, VA.

No hybrid option available.

nnEnvironmental RequirementsnnMainly sedentary; office environment; may be required to lift up to ten (10) pounds.

nFlexible in working extended hours when necessary to meet project deadlines.

nnThe above statements are intended to describe the general nature and level of work being performed by the individual(s) assigned to this position.

They are not intended to be an exhaustive list of all duties, responsibilities, and skills required.

Unissant management reserves the right to modify, add, or remove duties and to assign other duties as necessary.

In addition, where applicable and available, reasonable accommodation(s) may be made to enable individuals with disabilities to perform essential functions of this position.nPlease note: Candidate(s) will be required to go through pre-employment screening.nUnissant, Inc.

is a proud Equal Opportunity Employer!

(EOE; M/F/Disability/Vets)nn

Full Time