Principal Software Engineer

Riverstone Enterprise Solutions
Annapolis Junction, Maryland, United StatesFull-timePosted Sep 16, 2026

About the role

At Riverstone Enterprise Solutions, we're more than a technology company—we're a team of innovators, problem-solvers, and mission-focused professionals dedicated to making a meaningful impact. Since 2008, we have delivered innovative technology, engineering, cybersecurity, and mission support solutions to the Intelligence Community. We foster a collaborative, people-first culture where creativity is encouraged, professional growth is supported, and every team member has the opportunity to make a difference.

We are seeking a motivated, career-oriented, and customer-focused Principal Software Engineer to join our team in Annapolis Junction, Maryland.

PRIMARY RESPONSIBILITIES

Develops, maintains, and enhances complex and diverse software systems (e.g., processingintensive analytics, novel algorithm development, manipulation of extremely large data sets and realtime systems).

Analyze user requirements to derive software design and performance requirements

Debug existing software and correct defects

Provide recommendations for improving documentation and software development process standards

Design and code new software or modify existing software to add new features

Integrate existing software into new or modified systems or operating environments

Develop simple data queries for existing or proposed databases or data repositories

Write or review software and system documentation

Serve as team lead at the level appropriate to the software development process being used on any particular project Design or implement complex database or data repository interfaces/queries

Develop or implement algorithms to meet or exceed system performance and functional standards

Assist with developing and executing test procedures for software components

Develop software solutions by analyzing system performance standards, confer with users or system engineers; analyze systems flow, data usage and work processes; and investigate problem areas

Modify existing software to correct errors, to adapt to new hardware, or to improve its performance

Design, develop and modify software systems, using scientific analysis and mathematical models to predict and measure outcome and consequences of design

REQUIRED SKILLS

Twelve (12) years’ experience as a Software Engineer in programs and contracts of similar scope, type, and complexity is required.

Bachelor’s degree in computer science or related discipline from an accredited college or university is required. Four (4) years of additional experience on projects with similar software processes may be substituted for a bachelor’s degree.

Experience with 3 OR 4 of the followings: Java, Spring Boot, MongoDB, Kubernetes, Rancher RKE2, Kalka, AWS; RHEL, LLMs, S3/Minio, Elasticsearch, Nifi

Demonstrated expertise in managing large Kubernetes clusters, Large MongoDB clusters, or migrated large systems to AWS in a hybrid architecture.

SECURITY REQUIREMENTS

Current/Active TS/SCI with Full Scope Polygraph.

Riverstone Enterprise Solutions is an equal-opportunity employer. All Qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, citizenship, sex, sexual orientation, gender identity, veteran's status, age, disability or any other basis prohibited by law.

Responsibilities

  • Develops, maintains, and enhances complex and diverse software systems
  • Analyze user requirements to derive software design and performance requirements
  • Debug existing software and correct defects
  • Provide recommendations for improving documentation and software development process standards
  • Design and code new software or modify existing software to add new features
  • Integrate existing software into new or modified systems or operating environments
  • Develop simple data queries for existing or proposed databases or data repositories
  • Write or review software and system documentation

Qualifications

  • Twelve (12) years’ experience as a Software Engineer
  • Bachelor’s degree in computer science or related discipline
  • Experience with 3 OR 4 of the following: Java, Spring Boot, MongoDB, Kubernetes, Rancher RKE2, Kalka, AWS, RHEL, LLMs, S3/Minio, Elasticsearch, Nifi
  • Demonstrated expertise in managing large Kubernetes clusters and MongoDB clusters

Skills mentioned

JavaSpring BootMongoDBKubernetesAWSElasticsearchLarge Language ModelsPerformance OptimizationDebuggingApache Kafka

About Riverstone Enterprise Solutions

Riverstone Enterprise Solutions, an Envision Innovative Solutions Company, delivers mission-focused technology solutions to the Intelligence Community and Department of Defense. Since 2008, we have supported critical national security missions by building high-performing engineering teams and developing innovative enterprise solutions. We foster a collaborative, and people-first culture where creativity is encouraged, professional growth is supported, and every team member has the opportunity to make a difference. We specialize in enabling advanced intelligence capabilities across Cyber, Cloud, DevSecOps, AI/ ML, Software, Big Data, Data Modeling, Systems Integration, Automation and SIGINT mission domains.

IT Services and IT Consulting11-50 employeesWashington DC-Baltimore Area

H-1B sponsorship history

Historical employer filing data was found for Riverstone Enterprise Solutions. The employer record includes 2 historical certified applications. This is employer-level history, not a guarantee that this role currently offers sponsorship.