Leidos

Sr. Web Application Developer

Leidos
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24 days ago
Indianapolis, IN, USASenior
H1B sponsor

Base Salary

$108k - $195k/yr

Responsibilities

  • Lead the architecture, design, and development of full-stack web applications using .NET/C#, Node.js, React, Angular, Vue, and related technologies.
  • Design and deploy scalable cloud-native solutions using microservices, serverless, and containerized architectures across AWS and Azure.
  • Integrate AI and machine learning capabilities, including LLMs, AI APIs, intelligent search, summarization, recommendations, and automation workflows.
  • Serve as a technical advisor and primary technical interface for clients, leading solutioning sessions, architecture discussions, and technical briefings.
  • Oversee secure, high-performance API development, interoperability, versioning, performance optimization, and cloud adoption.
  • Lead CI/CD pipeline implementation, DevSecOps practices, testing strategies, performance monitoring, and system resilience improvements.
  • Mentor developers, lead code and architecture reviews, and guide technical decision-making across multiple technology stacks.
  • Collaborate with UI/UX teams to deliver responsive, accessible, and user-centered applications.
  • Ensure responsible AI use, data privacy, governance, secure application development, and cloud security best practices.

Requirements

  • Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field, or equivalent experience.
  • At least 8 years of full-stack web application development experience, including .NET/C# and modern JavaScript frameworks.
  • Experience working across multiple web technologies beyond .NET, such as Node.js or Python.
  • Strong hands-on T-SQL experience, including queries, stored procedures, triggers, functions, and other database objects.
  • Hands-on experience integrating or developing AI/ML capabilities and working with AI APIs such as Azure OpenAI or AWS Bedrock.
  • Strong experience with AWS and/or Azure, including serverless architectures.
  • Deep understanding of web architecture, microservices, and RESTful API design, plus experience with SQL and NoSQL databases.
  • Proven ability to lead teams, mentor developers, conduct reviews, and engage directly with clients.
  • Knowledge of secure application development, cloud security, testing, performance, and coding best practices.
  • Ability to obtain a Public Trust before starting and U.S. citizenship.
  • Preferred qualifications include AWS, Azure, or AI/ML certifications; production generative AI experience; Python experience for AI/ML workflows; DevSecOps, CI/CD, and automation experience; and prior client-facing technical leadership experience.
Leidos

About Leidos

10,000+ employees

Leidos builds and operates technology and engineering solutions for defense, intelligence, civil, and health agencies, including systems integration, cyber, enterprise IT, sensors, and healthcare IT. It primarily sells through government contracts and long-term programs, plus managed services and mission software. Founded in 1969 and headquartered in Reston, Virginia, Leidos is a Fortune 500 public company on the NYSE; customers include U.S. defense and intelligence agencies and civil bodies such as the FAA.

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