Software Engineer - Expert

RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. We do this by offering exceptional benefits, flexible schedules, and the tools necessary to achieve success through paid training, mentoring, and the opportunity to work alongside top-notch industry professionals.

We are looking for skilled individuals to provide technical expertise in support of a government client., We are seeking an experienced Full Stack Developer to join our technology-based program supporting a key government customer. As a Full Stack Developer, you will play a critical role in designing, developing, and deploying sophisticated enterprise computing infrastructure, including web applications, network infrastructure, and cloud services

• Experience with AWS cloud services, DevOps tools, and software development methodologies
• Experience working in a SecDevOps Agile environment
• Knowledge of migrating Ruby on Rails to Java
• Familiarity with Infrastructure as Code (IOC) and cloud design principles, * Eleven (11) years of relevant experience full-stack development, with expertise in:
• Front-end development: HTML5, JavaScript, TypeScript, CSS
• Back-end development: Java Spring, APIs, microservices
• Bachelor’s degree in a relevant technical field, or 4 additional years of relevant experience in lieu of degree.
• Hands-on experience with AWS cloud services, DevOps tools, and software development methodologies
• Strong analytical and problem-solving skills, with ability to identify issues and implement corrective actions
• Excellent communication and collaboration skills, with ability to work effectively in a team environment, * Experience working in a SecDevOps Agile environment
• Knowledge of migrating Ruby on Rails to Java
• Familiarity with Infrastructure as Code (IOC) and cloud design principles
• Understanding of SecDevOps and its applications

Position requires active Security Clearance with appropriate Polygraph

$186169.00-$216169.00 parental leave, paid time off, 401(k) United States, Virginia, Herndon Nov 01, 2026 Job Brief, Pay Range: $186,169 - $216,169

The RealmOne pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Our approach to crafting offers considers various factors to establish an equitable and competitive compensation package. These considerations include, but are not limited to, the extent and intricacy of the role’s responsibilities, the candidate’s educational background, their work experience, and the specific competencies crucial for success in the role.

RealmOne Benefits:

• Healthcare Coverage + Insurance: Medical: Three (3) rich healthcare options through CareFirst with 100% or majority company-paid premiums. Tax-advantaged health savings account available with generous employer contribution. Dental + Vision: 100% employer-paid for employees and family with buy-up option available.
• Retirement + Savings: 401K - 10% TOTAL CONTRIBUTION - 5% safe harbor - 5% annual profit share. Immediate vested, no match required!
• Paid Time Off + More: 4 weeks starting PTO - 11 federal holidays + 2 floating holidays - Paid hours for company-required training.
• Career Growth + Development: Access to FREE 24/7 learning via Udemy - Opportunities to participate in tech councils, industry initiatives, etc. - $7,500 annual Educational & Professional Development Assistance.
• MORE BENEFITS…FOR EVERY LIFESTYLE! - Paid parental leave - Adoption assistance - Annual swag drops - Flexible work schedules - -Generous referral bonus program - Employee appreciation + family-friendly corporate events …and much more.

• RealmOne is a mid-sized science and technology company dedicated to solving our customers’ toughest mission challenges.
• Headquartered in Columbia, MD., RealmOne supplies advanced cybersecurity, data science and software engineering services and products to customers in the Government and commercial sectors.
• RealmOne delivers encompassing mission assurance and critical systems support to government customers across various U.S. locations to include Colorado, Georgia, Hawaii, Texas, Utah, and Virginia.
• RealmOne has earned numerous awards, including being named a Top Workplace by the Baltimore Sun. With more than 30+ active contracts, 12 of which are prime, RealmOne stands as a premier innovator supporting the Government and Department of Defense, with team members located nationwide.