Demo

APPLICATION DEVELOPER II

LSI - Employment
Jacksonville, FL Full Time
POSTED ON 10/28/2025 CLOSED ON 12/31/2025

What are the responsibilities and job description for the APPLICATION DEVELOPER II position at LSI - Employment?

Job Title
APPLICATION DEVELOPER II
Location
Jacksonville, FL 32221 US (Primary)
Job Type
Full-Time
Education
Bachelor's Degree
Travel
Up to 10%
Security Clearance
Ability to obtain and maintain a U.S. Security Clearance
Job Description

About LSI

LSI is an employee-owned company that employs dynamic teams of professionals – people with the finest technical expertise, a level of passionate creativity, and a truly visionary outlook who deliver innovative training solutions that exceed our customers’ expectations. Everyone at LSI has a personal stake in our success. LSI has over 400 training support experts, engineers, and craftsmen on staff who develop state-of-the-art high-fidelity training devices, complex computer-based, highly interactive distributed learning products, and comprehensive, dynamic technical publications. LSI employee-owners collaborate to deliver training products and services for a myriad of programs and customers, using leading-edge technology and proven processes.

Mission

Our mission is to prepare our military and allies to be battle-ready through cutting-edge training products and services.

Vision

Our vision is to be the premier provider of military training solutions, renowned for our innovation and excellence. Through employee-ownership and teamwork, we will shape a future where every military service member is equipped to succeed in their mission.

Guiding Principles

ESOP Sustainability: We do everything within our control to meet project budgets and schedules, so our ESOP prospers.

Take Ownership: Each Employee-Owner takes ownership at the individual level for their words, actions, and results. Individual ownership breeds accountability. Accountability breeds trust. When we hold ourselves accountable and trust our fellow employee-owners to do the same, we realize success.

Clear Communication: We project confidence in our communication using unambiguous language and providing clear purpose and direction.

Pursuit of Excellence: We aggressively pursue continuous improvement both as teams and individual employee-owners. We strive to get better every day. There is no room for mediocrity.

Pride in Our Work: We know the value of our work and are proud of what we produce.

Customer Focus: Customers are both internal and external and we strive to give both our best efforts.

Assume Positive Intent: Assume others are well-intentioned in their actions and seek additional information about the circumstances to help solve problems. Assuming positive intent in all interactions is the key to building strong teams and working together to solve problems.

One Voice: Every Employee-Owner is expected to speak up if they have an idea for improvement or if they disagree with a potential course of action. Once a decision is made, the entire team commits to it and moves forward with one voice.

Apply: https://www.lsijax.com/careers/

General Summary

The Application Developer II position is a mid-level software development role responsible for designing, developing, testing, maintaining, and optimizing internal and customer-facing applications with limited supervision. This position requires demonstrated proficiency in modern development technologies, strong problem-solving abilities, and the capability to mentor junior developers. The developer will collaborate closely with cross-functional teams to deliver robust, scalable, and maintainable software solutions.

Essential Job Functions

• Provides advanced technical support and guidance for internal users, testers, and junior developers.

• Designs, develops, tests, deploys, and maintains software applications and system components in alignment with business goals and technical specifications.

• Implements new features and enhancements to improve performance, usability, and security.

• Authors and maintains detailed technical documentation, including system designs, specifications, and test results.

• Integrates front-end and back-end systems using RESTful APIs, web services, and data processing frameworks.

• Collaborates with team members to implement solutions and resolve complex issues.

• Conducts unit and integration testing to ensure quality and stability.

• Troubleshoots and debugs application issues following established processes.

• Participates in and occasionally leads code reviews to ensure adherence to coding standards and promote best practices.

• Contributes to continuous improvement by evaluating emerging technologies and implementing innovative approaches.

• Safely handles government-furnished equipment and materials.

• Works a standard weekly schedule of 40 hours with overtime as required.

• Perform additional duties as assigned.

 

 

 

Job Requirements

Knowledge, Skills, and Abilities

• Demonstrated strong analytical, debugging, and problem-solving skills with the ability to assess and resolve complex technical challenges.

• Thorough understanding of the software development lifecycle (SDLC) and methodologies such as Agile or DevOps.

• Solid grasp of object-oriented programming (OOP) and design principles.

• Proficiency with modern programming languages such as C# or TypeScript, and experience with modern frameworks.

• Strong understanding of front-end and back-end integration.

• Basic understanding of web technologies (HTML5, CSS3, and TypeScript).

• Hands-on experience with database design, SQL development, and performance optimization using Microsoft SQL Server or equivalent platforms.

• Familiarity with DevOps practices, version control (Git), and CI/CD tools.

• Effective communication and collaboration skills with the ability to convey technical concepts clearly to both technical and non-technical audiences.

• Proven ability to work independently or in a lead capacity on complex development tasks while maintaining high standards of quality and reliability.

• Must be capable of safely handling government-furnished equipment and materials.

• Must be available to work a standard weekly schedule with overtime as required.

• Perform other duties as assigned.

Education and Experience

• A bachelor’s degree in Computer Science, Software Engineering, or a closely related field from an accredited institution, and at least two (2) years of professional development experience; or

• An associate degree plus four (4) years of relevant experience; or

• A high school diploma plus six (6) years of experience; or

• Completion of a recognized coding bootcamp or technical training program, plus:

  •  At least three (3) years of relevant software development experience; or
  •  An associate degree or higher in any field.

• Internal applicants with demonstrated domain expertise in LSI applications, frameworks, or internal business systems may qualify with reduced formal experience requirements, provided they can:

  • Exhibit comprehensive understanding of LSI application architecture, integrations, and coding standards; and
  • Demonstrate hands-on contributions to LSI core business tools that directly support organizational operations.

• To be considered, the applicant must be ready to review their past involvement on at least two major software features, regardless of technologies used where the applicant contributed a significant portion of the code. This will include a technical analysis of the personally written code, detailing the specific problem it solved, the decisions made during implementation, and a clear justification for why that particular approach was chosen to achieve the project's goals.

 

Equal Opportunity Employer including Disability/Vets.
Software Developer in Test (SDET) - II
Syms Strategic Group, LLC (SSG) -
Jacksonville, FL
Analyst Applications II | Epic Application Analyst/Inpatient/ED
UF Health -
Jacksonville, FL
Crew Member
Dunkin' | APS Investments II -
Waycross, GA

Salary.com Estimation for APPLICATION DEVELOPER II in Jacksonville, FL
$87,477 to $112,146
If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a APPLICATION DEVELOPER II?

Sign up to receive alerts about other jobs on the APPLICATION DEVELOPER II career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$88,984 - $115,784
Income Estimation: 
$111,369 - $141,168
Income Estimation: 
$117,871 - $153,580
Income Estimation: 
$109,939 - $144,341
Income Estimation: 
$114,500 - $144,633
Income Estimation: 
$73,727 - $94,067
Income Estimation: 
$88,984 - $115,784
Income Estimation: 
$92,017 - $124,111
Income Estimation: 
$90,707 - $120,959
Income Estimation: 
$91,486 - $118,193
Income Estimation: 
$92,017 - $124,111
Income Estimation: 
$111,369 - $141,168
Income Estimation: 
$117,871 - $153,580
Income Estimation: 
$109,939 - $144,341
Income Estimation: 
$114,500 - $144,633
Income Estimation: 
$144,503 - $184,592
Income Estimation: 
$150,756 - $194,140
Income Estimation: 
$172,191 - $221,861
Income Estimation: 
$114,549 - $164,025
Income Estimation: 
$153,752 - $200,235
Income Estimation: 
$117,871 - $153,580
Income Estimation: 
$131,745 - $167,716
Income Estimation: 
$144,503 - $184,592
Income Estimation: 
$102,541 - $137,871
Income Estimation: 
$153,752 - $200,235
This job has expired.
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at LSI - Employment

  • LSI - Employment Jacksonville, FL
  • Job Title HR ASSISTANT I Location Jacksonville, FL 32201 US (Primary) Job Type Full-Time Education High School Diploma / GED Travel Up to 10% Security Clea... more
  • 5 Days Ago

  • LSI - Employment Jacksonville, FL
  • Job Title MACHINIST II Location Jacksonville, FL 32221 US (Primary) Job Type Full-Time Education High School Diploma / GED Travel None Security Clearance A... more
  • 5 Days Ago

  • LSI - Employment Jacksonville, FL
  • Job Title FRONT END DEVELOPER II Location Jacksonville, FL 32221 US (Primary) Job Type Full-Time Education Bachelor's Degree Travel Up to 25% Security Clea... more
  • 10 Days Ago


Not the job you're looking for? Here are some other APPLICATION DEVELOPER II jobs in the Jacksonville, FL area that may be a better fit.

  • LSI - Employment Jacksonville, FL
  • Job Title APPLICATION DEVELOPER I Location Jacksonville, FL 32221 US (Primary) Job Type Full-Time Education Bachelor's Degree Travel Up to 10% Security Cle... more
  • 18 Days Ago

  • LSI - Employment Jacksonville, FL
  • Job Title FRONT END DEVELOPER II Location Jacksonville, FL 32221 US (Primary) Job Type Full-Time Education Bachelor's Degree Travel Up to 25% Security Clea... more
  • 10 Days Ago

AI Assistant is available now!

Feel free to start your new journey!