Haystack
← Back to Jobs
Technology

Expert Applications Developer (Full Stack)

Fusion InnovationHerndon, VA🇺🇸United StatesPosted 16 Aug 2026

Quick Overview

Salary
$100k - $215k/yr
Work Type
Hybrid
Level
Mid Senior

Job Description

Job Description

FusionInnovation's recent growth has earned us a top spot in the Inc 5000 FastestGrowing Private Companies in America and in Washington Business Journal's BestPlaces to Work multiple years in a row. Our team members are passionate abouttheir work and are empowered to contribute their unique skills and perspectivesto our projects. Here at Fusion, we put people first. When you join us, youdon't just join a company, you join a family. If you are ready to be part of afun and engaging team where your innovative ideas are heard, supported, andmake ever lasting mission impacts for our Nation's most sensitive programs, youhave come to the right place.

Position Overview

We are seeking an experienced Full Stack Applications Developer at the Expert level to support a high-impact mission program delivering enterprise-wide, data-centric applications. This role involves building and enhancing scalable web applications and services that enable advanced mission management and automation.

You will collaborate with a cross-functional team of software engineers, ETL developers, and data scientists to deliver production-ready capabilities in an Agile environment. This is an excellent opportunity to work with AI and machine learning integration, modern cloud architectures, and advanced development tools.

Key Responsibilities

  • Design, develop, test, and deploy full stack web applications
  • Integrate AI and machine learning capabilities into production systems
  • Build and maintain scalable microservices-based architectures
  • Develop rapid prototypes to refine requirements and system design
  • Collaborate with stakeholders to gather requirements and translate into user stories
  • Deliver demonstrations and technical briefings to technical and non-technical audiences
  • Produce technical documentation and support program reviews
  • Participate in Agile development processes and team activities

Required Skills

  • Active Top Secret/SCI with Polygraph
  • Bachelor's degree in Computer Science, Mathematics, or related field or equivalent experience
  • 6 or more years of experience developing and deploying applications
  • 5 to 7 or more years building web applications using Angular, React, or JavaScript frameworks
  • Strong experience working in Linux environments
  • 4 to 6 or more years working in AWS or C2S cloud environments
  • Experience with microservices and containerization technologies such as Docker or Podman
  • Experience with search and analytics tools such as Elasticsearch, Solr, or OpenSearch
  • Proficiency in object-oriented programming using Python preferred, or Java, C#, or similar
  • Understanding of ETL processes with large structured and unstructured datasets
  • Strong communication skills and ability to work independently and within teams

Desired Skills

  • Experience with machine learning frameworks such as PyTorch, TensorFlow, or Keras
  • Background in text analytics or natural language processing
  • Experience with data visualization tools such as Tableau, D3.js, or Pandas
  • Familiarity with relational and NoSQL databases
  • Experience working in Agile teams using Jira, Confluence, and Git

Additional Details

Fusion Innovation anticipates the annual base salary for this position will generally range from $100,000 to $215,000. Actual compensation will be determined based on several factors, including, but not limited to:

  • Relevant education, certifications, and training
  • Years of direct applicable experience with this work and the customer
  • Contract labor category requirements, skill level, contract bill rate, and hours allocation
  • Alignment with the position's responsibilities
  • Additional specialized skills

In addition to base salary, eligible employees may be considered for discretionary bonuses and are eligible for Fusion Innovation's comprehensive benefits package, which includes medical, dental, vision, company-sponsored retirement contributions, paid leave, professional development opportunities, and other employee benefits.

Fusion Innovation is an Equal Opportunity Employer and considers all qualified applicants for employment without regard to disability, protected veteran status, or any other characteristic protected by applicable federal, state, or local law. Fusion Innovation participates in E-Verify to confirm employment eligibility for all newly hired employees. If you require a reasonable accommodation to complete the application process, please contact and include your name and contact information

Skills

Docker
Microservices
AWS
ETL
Machine Learning
Tableau
Agile
Angular
C#
Confluence
D3.js
Git
Java
JavaScript
Jira
Keras
Pandas
PyTorch
Python
React
TensorFlow

Similar jobs