Senior Application Developer / Engineer / Programmer

Job Description: Senior Application Developer / Engineer / Programmer 

Position Title: Senior Application Developer / Engineer / Programmer
Requisition ID: TO-673
Number of Openings: 2
Location: Washington, DC (On-site / Hybrid as required by client)
Citizenship Requirement: U.S. Citizenship Required
Period of Performance: Through December 31, 2026 (with potential extension)

Position Overview

Diverse Agile Solutions (DAS) is seeking two highly skilled Senior Application Developers / Engineers to support the design, development, and deployment of modern cloud-native applications for a federal client.

This role focuses on building scalable AWS-based solutions leveraging containerization, DevOps, and Agile methodologies, with a strong emphasis on Python backend services and Angular front-end development. The selected candidates will play a critical role in designing, developing, securing, and maintaining enterprise-grade applications in AWS GovCloud environments.

Key Responsibilities

• Design, develop, and maintain cloud-native applications using AWS services and containerized architectures


• Build and deploy applications using CI/CD pipelines and DevOps best practices


• Develop backend services in Python and front-end applications using Angular (TypeScript)


• Lead technical efforts across areas such as:
  
  
  
  • Database management
  
  
  • Application development
  
  
  • Cloud security and disaster recovery
  
  
  • Cloud-based system integration
  
  
  
  


• Contribute to solution architecture, system design, and technical documentation


• Perform code remediation, debugging, and unit testing within CI/CD pipelines


• Develop and maintain RESTful or GraphQL APIs and ensure production readiness


• Collaborate within Agile teams, participating in Scrum ceremonies and iterative delivery cycles


• Ensure systems meet security, compliance, and operational standards, especially within federal environments

Required Qualifications

Education & Experience

• Bachelor’s degree in Computer Science, Information Technology, or related field


• Minimum 6+ years of relevant professional experience


• Demonstrated experience working in Agile/Scrum environments

Core Technical Expertise

AWS DevOps & Systems Engineering

• Strong experience with AWS services, including:
  
  
  
  • ECS, Lambda, API Gateway, S3, RDS/Aurora (PostgreSQL), CloudWatch, CloudTrail
  
  
  
  


• Expertise in Infrastructure as Code (IaC) using Terraform


• Experience managing AWS GovCloud environments (preferred)


• Hands-on experience with:
  
  
  
  • Monitoring, logging, and auditing (CloudWatch, Splunk)
  
  
  • Production operations, release management, and system tuning
  
  
  
  


• Understanding of federal compliance frameworks (NIST 800.53 / FISMA)

Data Engineering

• Experience building and maintaining data pipelines and ETL processes in AWS


• Proficiency with:
  
  
  
  • AWS Glue or MWAA (Airflow)
  
  
  • Python (pandas, PySpark) and SQL
  
  
  
  


• Experience with data quality frameworks (e.g., Great Expectations, Glue Data Quality)


• Knowledge of data replication, transformation, and performance tuning

API Development

• Strong experience developing and supporting:
  
  
  
  • RESTful and/or GraphQL APIs
  
  
  
  


• Familiarity with:
  
  
  
  • API Gateway, Lambda, and AWS API ecosystem
  
  
  
  


• Experience with API testing tools (Postman, Swagger/OpenAPI)

Front-End Development

• Proficiency in:
  
  
  
  • Angular (TypeScript) or React
  
  
  
  


• Experience building interactive, data-driven web applications


• Hands-on experience with visualization tools such as:
  
  
  
  • Highcharts, ag-Grid, Plotly
  
  
  
  


• Familiarity with automated testing frameworks (Selenium, Jasmine)

Authentication & Security

• Experience implementing:
  
  
  
  • OAuth 2.0, OpenID Connect (OIDC)
  
  
  
  


• Integration experience with:
  
  
  
  • Okta, JWT, AWS IAM, Verified Permissions
  
  
  
  

DevOps & Containerization

• Strong experience with:
  
  
  
  • CI/CD pipelines (GitLab, Argo CD)
  
  
  • Git-based version control
  
  
  • Automated and unit testing
  
  
  
  


• Containerization expertise using:
  
  
  
  • Docker, Kubernetes (EKS, ECS, Fargate)
  
  
  
  

Additional Preferred Skills

• Experience with Splunk and centralized logging solutions


• Familiarity with XACTA 360


• Experience with geospatial data and mapping tools (e.g., ESRI, geocoding)


• Prior experience supporting federal agencies

Soft Skills

• Strong communication skills (written and verbal)


• Ability to lead technical initiatives and mentor junior team members


• Excellent problem-solving and analytical abilities


• Strong documentation and presentation skills

Why Join Diverse Agile Solutions (DAS)?

At DAS, we deliver innovative, mission-driven solutions that support critical government initiatives. Our team thrives in a collaborative, Agile environment that values technical excellence, diversity, and continuous growth.

Equal Opportunity Employer

Diverse Agile Solutions is an Equal Opportunity Employer committed to diversity and inclusion in the workplace.