About the roleConcept Plus is seeking a Senior Python Developer with 10+ years of professional development experience to support a mission-critical, enterprise-scale application operating within secure client environments, including Denied, Degraded, Intermittent, and Limited (DDIL) communication conditions. This role requires deep expertise in Python application engineering, Pyodide-based execution environments, secure coding, cloud deployment, and cross-system integration. The ideal candidate will have a strong background in DevSecOps-aligned development, Zero Trust principles, and building resilient backend services in complex, regulated environments
What you'll do- Backend Engineering (Python & Pyodide) Responsibilities:
- Lead the ingestion, assessment, refactoring, and stabilization of complex Python codebases, including legacy system integration.
- Design and implement secure backend services, APIs, data models, and workflow components across multiple interconnected systems.
- Develop or support Python modules designed for execution in Pyodide environments, including WebAssembly-based packaging, secure runtime constraints, and sandboxed execution models.
- Ensure seamless Python functionality in browser-based or lightweight execution environments where Pyodide is used to support DDIL or disconnected operations.
- Apply secure coding standards aligned to DoD frameworks (NIST SP 800-53, 800-171, CMMC, DISA STIGs).
- Diagnose and resolve production issues, IRs, IAVAs, performance bottlenecks, and data-related defects.
- Drive continuous improvement of backend features, stability, security, and maintainability.
- DevSecOps & Cloud Responsibilities:
- Support secure CI/CD pipelines, including SAST/DAST/SCA, container scanning, and automated compliance checks.
- Collaborate with DevSecOps teams to enable secure delivery in Cloud One or similar GovCloud environments.
- Contribute to Continuous Monitoring (ConMon) dashboards, event tracking, logging, and cloud security posture management.
- Maintain deployment readiness across multiple environments (development, test, staging, production).
- Use and uphold modern Git workflows, including feature branches, PR-based code review, and secure version control.
- Demonstrate foundational understanding of Zero Trust environments and architecture.
- Ensure Python and Pyodide code is compatible with MosA (Modular Open Systems Approach) principles.
- Additional Responsibilities:
- Maintain compliance with ATO requirements, including POA&M updates, vulnerability remediation, and reporting.
- Implement Zero Trust principles, least privilege access, and encryption controls.
- Ensure secure handling of PII, PHI, and CUI throughout all code and data workflows.
- Participate fully in sprint cycles: planning, backlog refinement, stand ups, reviews, and retrospectives.
- Work within multi-vendor Agile environments, coordinating closely with government stakeholders and cross project teams.
- Support User Assessment Events (UAEs) and contribute to human-centered design improvements.
Required Qualifications- US Citizen
- Ability to obtain and/or maintain a government clearance.
- 10+ years of Python development experience, including secure backend systems and enterprise-scale deployments.
- Bachelors Degree
- Proven ability to design and optimize Python code for execution in Pyodide, including performance considerations for WebAssembly-based runtimes.
- Experience with API design, data modeling, backend architecture, and distributed workflow development.
- Strong understanding of CI/CD pipelines, secure development practices, and cloud-native Python deployments.
- Understanding of Zero Trust, DoD cybersecurity requirements, and secure data flow design.
- Experience delivering production-grade capabilities in collaborative, multi-team environments.
- Strong communication skills and the ability to articulate technical decisions to both technical and non-technical stakeholders.
- Self-directed with strong problem-solving skills and attention to detail.
Preferred Qualifications- Experience with the Cloud One platform
- Experience supporting OPMED systems • Familiarity with Defense Health Agency systems such as (OMDS, MedCOP, MHS GENESIS)
- Experience with micro-frontend architecture
- Familiarity with GraphQL and Apollo Client
- Contributions to open-source projects or a demonstrable public portfolio
