Freelance Senior Backend Developer Jobs (NOW HIRING)

General information
Job Posting Title
Senior Back End Developer
Date
Friday, May 1, 2026
City
Fort Meade
State
MD
Country
United States
Working time
Full-time
Description & Requirements
Maximus is a trusted federal partner supporting mission-critical programs across national security, defense, and public service delivery. Recent contract awards in cybersecurity and operational readiness underscore Maximus' role as a reliable prime for high-impact government missions. Joining Maximus means contributing to meaningful work in fast-paced environments alongside professionals committed to service, accountability, and results.
This position is contingent upon contract award and position availability. Selected candidates will receive a contingent offer of employment, which will become final only upon successful contract award to Maximus, availability of the position, and receipt of authorization to proceed.
This position is onsite in Fort Meade, MD, five days a week, and requires a TS/SCI security clearance.
Maximus TCS (Technology and Consulting Services) Internal Job Profile Code: TCS197, T5, Band 8
Job-Specific Essential Duties and Responsibilities:
- Provides subject matter proficiency for work described in the task.
- Responsible for providing analytical skills to support process improvement, specialized studies, and definition of requirements.
- Typical duties include analysis, planning, developing requirements documents, building functional models, developing procedures, developing functional architecture, and other related management and technical duties.
- Requires expertise in specialty areas.
- Shall perform engineering tasks for back-end design and development efforts including, but not limited to, developing back-end architectures to support current and new system capabilities and integrations, RESTful API development and modification, database management, and data model development and optimization.
Job-Specific Minimum Requirements:
- Active TS/SCI clearance is required.
- Must be able to report on-site in Ft Meade, MD up to five days per week based on customer requirements.
- Bachelor's degree in related field required.
- A Master's degree may substitute for 2 years of experience.
- 10 years of software development experience in object-oriented and scripted languages with the ability to apply several tool suites related to DevSecOps, microservices and containers.
- 5 years of experience performing back-end web design and development.
- 10 years of experience in relational databases, RESTful API development and integration.
- 5 years of experience in Python and PostgreSQL.
- 5 years of experience with bug tracking software (e.g., Jira).
- 5 years of experience testing web-based applications.
- 5 years of experience leading software development programs or projects.
- 3 years of experience with the following: AWS Infrastructure, Kubernetes, and RedHat Linux.
- 5 years of experience with at least five (5) of the following:
- Postgress
- RDS
- Exodus
- Python
- Luna
- Java
- Docker
- OpenJDK
- Ansible
- Packer
- Maven
- Kubernetes
- Red Hat
- Demonstrated experience in preparing, conducting, and documenting various systems tests and results to verify system operability and compliance with project standards and requirements.
- Practical experience developing in a cloud environment.
Preferred Skills and Qualifications:
- Experience with integrating data from unclassified to classified application deployments.
- 5 years of experience with DoW software development.
- Experience using Agile Test-Driven development.
- Experience integrating into DoW DevSecOps environments.
- 5 years of experience with CI/CD software development.
- Demonstrated experience in utilizing UX design tool suites (e.g., Sketch, InVision).
- Experience structuring data so it can be integrated into machine learning technologies or AI capabilities.
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Minimum Requirements
TCS197, T5, Band 8
EEO Statement
Maximus is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, age, national origin, disability, veteran status, genetic information and other legally protected characteristics.
Pay Transparency
Maximus compensation is based on various factors including but not limited to job location, a candidate's education, training, experience, expected quality and quantity of work, required travel (if any), external market and internal value analysis including seniority and merit systems, as well as internal pay alignment. Annual salary is just one component of Maximus's total compensation package. Other rewards may include short- and long-term incentives as well as program-specific awards. Additionally, Maximus provides a variety of benefits to employees, including health insurance coverage, life and disability insurance, a retirement savings plan, paid holidays and paid time off. Compensation ranges may differ based on contract value but will be commensurate with job duties and relevant work experience. An applicant's salary history will not be used in determining compensation. Maximus will comply with regulatory minimum wage rates and exempt salary thresholds in all instances.
Accommodations
Maximus provides reasonable accommodations to individuals requiring assistance during any phase of the employment process due to a disability, medical condition, or physical or mental impairment. If you require assistance at any stage of the employment process-including accessing job postings, completing assessments, or participating in interviews,-please contact People Operations at applicantaccom@maximus.com.
Minimum Salary
$
125,000.00
Maximum Salary
$
150,000.00