AMERICAN SYSTEMS

Senior Back-End / Platform Engineer

AMERICAN SYSTEMS • $135K — $165K *
Information Technology
11 - 15 years of experience
Job Overview by Ladders

Qualifications

  • BS, TS/SCI eligible with 11+ years of back-end software engineering experience, including 3+ years in cloud-native applications.
  • Certified in AWS, Azure, Google Cloud, or similar CSP.
  • Kubernetes Application Developer certification or practical expertise.
  • Security+ or equivalent certification.
  • Proficient in Python, with experience in frameworks like FastAPI or Flask.
  • Background in decomposing monolithic apps into modular services, ensuring data integrity.
  • Experience designing systems for complex business processes, with an emphasis on auditability.

Responsibilities

  • Lead the transformation of current DDMP services into modern cloud-native architectures.
  • Design and build business APIs for various documentation and reporting needs.
  • Create secure integrations with enterprise data sources and program-management systems.
  • Develop data services to ensure integrity and provenance of data handling.
  • Implement AI-assisted workflow automation while maintaining analyst accountability.
  • Set standards for API design, coding, data quality, and technical documentation.
  • Collaborate with security teams to address vulnerabilities and ensure secure configurations.

Benefits

  • Comprehensive healthcare benefits for employees and dependents.
  • Paid leave for work-life balance.
  • Retirement plans to support long-term financial security.
  • Insurance programs covering various needs.
  • Education and training assistance for professional development.
Full Job Description
Overview

Responsibilities

Design, build, migrate, and sustain DTE&A Data Management Platform (DDMP) secure domain services, data-access layer, integration APIs, workflow automation, and AI-enabled back-end capabilities.

Key Responsibilities

  • Lead the modernization of existing DDMP Python/Flask services and legacy MySQL/MongoDB data into secure, scalable cloud-native services.
  • Design and implement business APIs for assessments, evaluation, findings, recommendations, reconciliation threads, reports, artifacts, and approval history.
  • Build secure, observable integrations with enterprise data sources, program-management systems, SharePoint, telemetry streams, and analytics platforms.
  • Develop data-ingestion, transformation, validation, and reconciliation services that preserve data integrity and provenance.
  • Implement workflow automation and AI-assisted capabilities while ensuring analysts remain the accountable authority for official findings and scores.
  • Establish API standards, coding standards, data-quality controls, service-level objectives, and technical documentation.
  • Partner with security and cloud engineering staff to remediate vulnerabilities, implement secure configurations, and generate ATO evidence.

Qualifications

  • BS, TS/SCI eligible with 11+ years of professional back-end software engineering experience, including 3+ years delivering cloud-native, distributed, or microservices-based applications.
  • AWS Certified Developer, Microsoft Azure Developer Associate, Google Professional Cloud Developer, or comparable CSP credential.
  • Certified Kubernetes Application Developer (CKAD) or equivalent practical Kubernetes expertise.
  • Security+ or equivalent certification.
  • Expert-level Python experience, including modern API and service frameworks such as FastAPI, Flask, Django, or equivalent.
  • Experience decomposing a monolithic Flask application into modular services without disrupting active users or data integrity.
  • Experience designing domain-driven systems and workflow engines for complex, auditable business processes.
  • Knowledge of API gateway patterns, API versioning, throttling, idempotency, OpenAPI specifications, OAuth/OIDC token validation, and service-to-service authentication.
  • Experience with Change Data Capture (CDC), database replication, data quality controls, lineage, and data reconciliation.
  • Experience integrating with Microsoft 365/SharePoint Online through Microsoft Graph while maintaining SharePoint as the authoritative artifact repository.
  • Experience implementing retrieval-augmented generation, document extraction, NLP workflows, model-evaluation controls, and human-in-the-loop AI decision support.
  • Familiarity with DoW data platforms, secure cross-boundary integrations, and auditability requirements.
  • Deep experience designing and implementing REST APIs; practical GraphQL experience strongly preferred.
  • Strong relational-data expertise, especially PostgreSQL: data modeling, schema evolution, migrations, query optimization, indexing, transactions, high availability, backup/restore, and replication.
  • Experience migrating legacy data platforms, preferably MySQL and MongoDB to PostgreSQL and/or managed cloud data services, with validation, reconciliation, rollback, and minimal-downtime approaches.
  • Experience with event-driven architecture, asynchronous processing, queues, and streaming platforms such as Kafka, Kinesis, RabbitMQ, SQS, or equivalent.
  • Experience building ETL/ELT, data-ingestion, document-processing, and API-integration pipelines for structured and unstructured content, including JSON, XML, CSV, PDF, and Office documents.
  • Strong expertise in automated testing: unit, integration, contract, regression, performance, and API security testing.
  • Experience packaging applications with Docker and deploying to Kubernetes or a managed container platform.
  • Proficiency with Git-based development and CI/CD pipelines, ideally GitLab CI/CD in a DoW enterprise environment.
Pay Transparency StatementAMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $135,000.00/Yr. - USD $165,000/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance.

About AMERICAN SYSTEMS

AMERICAN SYSTEMS is a government IT solutions provider. The Company provides solutions in national security, healthcare, and public sector markets. Its services include acquisition and lifecycle support, enterprise IT, healthcare IT, intelligence analysis, and training and simulation. The Company's customers include the Department of Defense, Department of State, Department of Justice, and Department of Homeland Security. AMERICAN SYSTEMS was founded in 1975 and is headquartered in Chantilly, Virginia.
Learn more about AMERICAN SYSTEMS
Size
1,500 employees
Industry
Founded
1975

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