Senior Software Engineer

Innovative Systems & Solutions | Full time - Onsite

Senior Software Engineer - FFLL-8784

Annapolis Junction, United States | Posted on 03/17/2026

Innovative Systems & Solutions (ISS) works with a wide spectrum of talent to establish an atmosphere that stimulates creativity, constant progress, and achievement. At ISS, you will have the chance to immediately impact government transformation and our clients' missions by offering information solutions and services to Federal and Department of Defense (DoD) customers. Employees at ISS can look forward to exciting career opportunities.

Job Description

About the Role

The Software Engineer develops, maintains, and enhances complex and diverse software systems (e.g., processing‑intensive analytics, novel algorithm development, manipulation of extremely large data sets, real‑time systems, and business management information systems) based on documented requirements. Works individually or as part of a team. Reviews and tests software components for adherence to the design requirements and documents test results. Resolves software problem reports. Utilizes software development and software design methodologies appropriate to the development environment. Provides specific input to the software components of system design to include hardware/software trade‑offs, software reuse, use of Commercial Off‑the‑shelf (COTS)/Government Off‑the‑shelf (GOTS) in place of new development, and requirements analysis and synthesis from system level to individual software components.

Key Responsibilities

• Analyze user requirements to derive software design and performance requirements
• Design and code new software or modify existing software to add new features
• Debug existing software and correct defects, integrate existing software into new or modified systems or operating environments
• Develop simple data queries for existing or proposed databases or data repositories
• Provide recommendations for improving documentation and software development process standards
• Develop or implement algorithms to meet or exceed system performance and functional standards
• Assist with developing and executing test procedures for software components
• Write or review software and system documentation
• Develop software solutions by analyzing system performance standards, conferring with users or system engineers; analyze systems flow, data usage and work processes; and investigate problem areas
• Serve as team lead at the level appropriate to the software development process being used on any particular project
• 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; design or implement complex database or data repository interfaces/queries
• Oversee one or more software development teams and ensure the work is completed in accordance with the constraints of the software development process being used on any particular project
• Design or implement complex algorithms requiring adherence to strict timing, system resource, or interface constraints; perform quality control on team products
• Confer with system engineers and hardware engineers to derive software requirements and to obtain information on project limitations and capabilities, performance requirements and interfaces
• Coordinate software system installation and monitor equipment functioning to ensure operational specifications are met
• Implement recommendations for improving documentation and software development process standards

Requirements

Qualifications

Required Skills

• Experience using the Linux command line interface.
• Experienced developing microservices using Java and Spring.
• Experience with containerization technologies including Docker and containerd.
• Experience with container orchestration technologies such as Kubernetes.
• Experience using system monitoring tools including Grafana and Prometheus.
• Experience using Git for version control.

Desired Skills

• Experience with continuous integration and continuous delivery principles and tools such as GitLab CI and ArgoCD.
• Experience with OpenSearch or Elasticsearch for data indexing and retrieval.
• Experience with NiFi for dataflow management and ingestion.
• Experience with the Amazon HCI platform.
• Strong debugging, documentation, and communication skills.
• Ability to operate effectively in an Agile development environment and on a multidisciplinary team.

Twenty (20) years’ experience as a SWE in programs and contracts of similar scope, type, and complexity is required. A Bachelor’s degree in Computer Science or related discipline from an accredited college or university is required. Four (4) years of additional SWE experience on projects with similar software processes may be substituted for a bachelor’s degree.

Salary Range

245-260,000

The salary range provided is a general guideline. ISS considers several factors when determining compensation, including the role’s responsibilities, candidate experience, education, skills, and current market conditions.

What We Offer

ISSI provides a highly competitive benefits package, including:

• 401(k) with matching contributions
• Health, Dental, and Vision coverage
• Employer-funded Health Savings Account (HSA)
• Life and AD&D insurance
• Short-Term and Long-Term Disability coverage
• Business travel and expense reimbursement
• Employee referral program with cash bonuses
• Employee recognition program
• Tuition and training reimbursement

Who Is ISSI?

ISSI is a growing management and technology consulting firm specializing in systems and software solutions. Our team is dedicated to delivering exceptional results for both our clients and employees.

Since our inception, we have focused on developing innovative solutions that help organizations achieve their goals. We pride ourselves on collaboration, technical excellence, and staying at the forefront of emerging technologies.

Equal Opportunity Employer

ISSI is proud to be an Equal Opportunity Employer. All employment decisions—including hiring, promotion, discipline, and termination—are based on merit and business needs. We do not discriminate on the basis of race, color, religion, age, genetic information, or any other protected status under federal, state, or local law.

Innovative Systems & Solutions is an Equal Opportunity Employer and does not discriminate on the basis of race or ethnicity, religion, sex, national origin, age, veteran disability or genetic information or any other reason prohibited by law in employment.

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