Fullstack Developer (Cloud)

Do you crave a career that truly makes an impact in people’s lives? Do you thrive on problem-solving and finding solutions? Join a dedicated, tight-knit team that creates an immediate and meaningful impact every day

Leidos QTC Health Services is seeking an experienced full‑stack developer who can design, build, and maintain modern, responsive web applications and cloud services on AWS. The role is fully remote; however, occasional travel to Reston, VA may be requested for team events or customer meetings.

Primary Responsibilities:

• Develop cloud‑native applications: Design, develop and deploy scalable, secure and cost‑efficient web applications and micro‑services using AWS services such as S3, EC2, Lambda, Step Functions, API Gateway, SQS, SNS and DynamoDB. Draw on AWS best practices to ensure performance, reliability and resilience.


• Modern front‑end development: Build responsive UIs using modern JavaScript frameworks (e.g., Vue, React, or Angular) and ensure seamless integration with backend APIs. Collaborate with UX designers to deliver accessible, mobile‑friendly experiences.


• Infrastructure as Code: Provision and manage cloud infrastructure using AWS CDK, CloudFormation and Terraform. Automate environment setup, configuration and deployment pipelines (CI/CD) to support rapid, reliable releases.


• Serverless and event‑driven architecture: Orchestrate workflows using Lambda, Step Functions, SQS and SNS to build highly available, loosely coupled services. Implement asynchronous messaging and error‑handling patterns.


• APIs & integration: Design and develop RESTful and GraphQL APIs; integrate with third‑party systems; follow secure coding practices. Use Python (with frameworks such as FastAPI/Flask) and JavaScript/TypeScript (Node.js) for backend services.


• Security & compliance: Ensure all systems meet HIPAA/FISMA/FedRAMP security requirements. Implement authentication, authorization, encryption and secure data storage. Monitor and remediate vulnerabilities, focusing on healthcare data protection.


• Testing & quality: Write unit, integration and end‑to‑end tests; develop automated testing frameworks; perform code reviews to maintain high code quality.


• Performance & cost optimization: Monitor application performance and AWS resource usage, proactively tuning for scalability and cost efficiency. Use CloudWatch, X‑Ray and other observability tools.


• Collaboration & mentorship: Work closely with architects, product owners and DevOps engineers. Mentor junior developers, participate in sprint planning, and contribute to continuous process improvement.


• Continuous learning: Stay current on emerging AWS services and web technologies; recommend and implement improvements to enhance system capabilities and developer productivity.

Required Qualifications/Competencies:

• Bachelor’s degree from an accredited college in Computer Science, Computer Engineering, or another similar quantitative field. Additional experience in lieu of a degree may be considered.


• 9 years of professional software development, including significant experience building and deploying full‑stack web applications. At least 5 years’ experience designing and implementing cloud‑native solutions on AWS.


• Technical skills: Advanced proficiency in Python and JavaScript/TypeScript. Hands‑on expertise with AWS services like Lambda, EC2, S3, DynamoDB and API Gateway. Strong grasp of infrastructure‑as‑code tools (AWS CDK, CloudFormation, Terraform) and CI/CD pipelines (GitHub Actions, Jenkins).


• Front‑end: Strong knowledge of modern JavaScript frameworks (React, Vue or Angular), HTML5 and CSS3. Experience creating interactive UIs and optimizing for performance and accessibility.


• Infrastructure & DevOps: Familiarity with containerization and orchestration (Docker, Kubernetes/ECS/EKS) and serverless patterns. Comfortable with Linux, networking, and cloud security best practices.


• Database expertise: Experience designing and querying relational (PostgreSQL/MySQL) and NoSQL databases (DynamoDB). Knowledge of caching and event‑streaming technologies is a plus.


• Communication & leadership: Excellent written and verbal communication skills. Proven ability to collaborate with cross‑functional teams and to mentor junior developers.


• Education & certifications: Bachelor’s degree in Computer Science, Engineering or related field.

Preferred Qualifications:

• Experience with AWS Step Functions, EventBridge, Bedrock or other AI/ML services.


• Knowledge of healthcare interoperability standards (FHIR, HL7) and federal compliance frameworks.


• Proficiency with Terraform Cloud and multi‑account AWS governance patterns.


• Familiarity with Agile/Scrum methodologies and tools like Jira, Confluence and GitLab.


• AWS Certified Developer or Solutions Architect certification preferred; additional certifications (e.g., Security Specialty) and healthcare‑industry experience are bonuses.

About Leidos QTC Health Services

Leidos QTC Health Services collaborates closely with government and non-government customers to address current and future program needs within the health services domain. We specialize in disability-focused medical examinations, independent medical exams and review services, occupational health services, diagnostic testing, and case management solutions. As innovators, we focus on advancing technologies that improve service delivery, with a particular emphasis on enhancing accessibility for examinees in rural communities. With a proven track record of continuous improvement and steady growth, we now handle over 2 million appointments annually. Visit for more information.

Compensation and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. As a result, we offer meaningful and engaging careers to support you and your career goals, all while nurturing a healthy work-life balance. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

This role may fall under the Service Contract Act (SCA), a federal law which provides for a U.S. Department of Labor-prescribed minimum prevailing rate of pay and certain benefit levels. Where appropriate, Company-provided benefit plans such as comprehensive leave, holiday, medical, dental, life, accident, disability coverages, retirement plan contributions, and other health and welfare benefits and payments are utilized to meet these obligations.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos QTC Health Services will also consider for employment qualified applicants with criminal histories consistent with relevant laws.