Senior Web Application Developer

Leidos

Confirmed live yesterday High trust

Quick summary

Work type
On-site
Location
Indianapolis, IN
Salary
$107,900–$195,050 / yr
Employment
Full-time
Posted
29 days ago
Freshness
Confirmed live yesterday

Market check

Salary context

Competitive pay

How this pay compares to similar roles

Similar $156k
This role $151k
$97k $206k
below market most similar roles pay here above market

This role pays less than 54% of similar roles. Most pay $124,500–$187,675 — the blue band above. At the midpoint, this role pays about $151k versus about $156k for comparable roles.

Based on 240 similar postings.

Employer

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations.

Leidos currently has 435 open roles on FindRole.

Listed pay typically runs $92,300–$166,850 across 351 roles with salary data.

Most-posted roles

View all roles at Leidos

At a glance

TL;DR · Senior Web Application Developer

The Sr. Web Application Developer serves as a technical leader and AI-enabled solutions engineer, providing architectural guidance and mentoring engineering teams. This role involves designing and developing scalable, cloud-native web applications, microservices, and RESTful APIs while integrating AI/ML capabilities like generative AI and intelligent search. The developer will act as a primary technical interface for clients, translating business needs into secure, high-performing solutions. Key technologies include .NET/C#, Node.js, Python, and JavaScript frameworks such as React, Angular, and Vue. The position requires hands-on experience with AWS and Azure cloud platforms, T-SQL, and DevSecOps practices. The work focuses on building production-ready systems that incorporate LLMs and data-driven models to enhance user experience, operational efficiency, and system reliability within complex, mission-driven environments.

What you'll do

  • Lead the architecture, design, and development of modern web applications using .NET/C#, Node.js, and JavaScript frameworks.
  • Design and implement scalable, cloud-native solutions using microservices and serverless architectures in AWS and Azure.
  • Integrate AI-enabled features such as LLMs, AI APIs, and automation workflows into production systems.
  • Serve as the primary technical interface to clients to translate business needs into scalable technical solutions.
  • Establish and enforce engineering best practices, coding standards, and DevSecOps practices across development teams.
  • Oversee the development of secure, high-performance RESTful APIs and ensure cross-platform interoperability.
  • Mentor developers through code reviews, architecture reviews, and technical decision-making.
  • Implement comprehensive testing strategies and performance monitoring to ensure system resilience and security.

What we're looking for

  • US Citizenship is required to obtain a Public Trust.
  • Bachelor’s or Master’s degree in Computer Science, Information Technology, or a related field (or equivalent experience).
  • 8+ years of experience in full-stack web application development, including .NET/C# and modern JavaScript frameworks.
  • Demonstrated experience working across multiple web technologies beyond .NET, such as Node.js or Python.
  • Strong hands-on experience with T-SQL, including writing and optimizing queries, stored procedures, and triggers.
  • Hands-on experience integrating AI/ML capabilities, such as AI APIs (Azure OpenAI, AWS Bedrock) and data-driven features.
  • Strong experience with AWS and/or Azure cloud platforms, including serverless architectures.
  • Certifications in AWS, Azure, or AI/ML-related technologies (preferred).

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