Full Stack Developer III

EXPANSIA; Dayton (OH); Remote; USD 122,000 - 188,000; Full time

Job summary

EXPANSIA, in partnership with Aether Aerospace, is seeking a Full-Stack Developer III for remote work with preferred locations in Boston, MA or Dayton, OH. You will design, develop, and maintain web services in a LEMP stack, leveraging PHP, JavaScript, and modern frameworks to deliver secure, scalable solutions.

You will gather requirements from clients and internal teams, implement features, write tests, and optimize performance while adhering to coding standards and agile practices.

Qualifications

• Bachelor's degree or equivalent experience; 5+ years in full-stack development or a Master's with 3+ years.
• Strong full-stack experience with PHP, JavaScript, and relational databases; able to work independently.
• Ability to design scalable web applications and solve complex technical challenges.

Responsibilities

• Develop web services and APIs for system integration
• Gather and document business requirements from clients and internal teams
• Design, implement, and enhance applications using LEMP Stack technologies
• Maintain and improve software functionality while ensuring coding, security, and compliance standards
• Collaborate with stakeholders to resolve development and implementation issues
• Troubleshoot and resolve technical problems in a timely manner
• Develop front-end features using HTML, CSS, JavaScript, and frameworks like ReactJS and Bootstrap3
• Write unit tests, refactor code, and optimize query performance for relational databases
• Provide technical support to operational strategies aligned within your program and initiatives

Skills

Full-stack development

PHP

JavaScript

Relational databases

Laravel

ReactJS

Bootstrap3

ASP.NET MVC

Web API

LINQ

OOP

Education

Bachelor's degree or equivalent experience

Master's degree (optional)

Tools

Linux

Nginx

MySQL

PostgreSQL

SVN

Job description

Start Date: Immediate

JHNA, CTSi, and EXPANSIA have come together to form a Defense Technology platform named Aether Aerospace focused on delivering high-impact technologies, technology-enabled services and advanced manufacturing solutions to the U.S. Department of Defense and related national security customers.

Backed by Falfurrias Management Partners, the platform brings together deep domain expertise across Army, Navy, and Air Force and Space Force programs, digital engineering, systems integration, and specialized manufacturing capabilities.

The combined organization operates as a multi-entity aerospace and defense technology and tech-enabled services and manufacturing enterprise positioned for scalable growth, operational excellence, and long-term value creation

OVERVIEW

Full-time/Permanent Employee

Location: Remote, preferred Boston, MA or Dayton, OH

As a Full-Stack Developer III, you will design, develop, and maintain web services and applications in a LEMP Stack environment (Linux, Nginx, MySQL, PostgreSQL, and PHP). You will gather and document requirements, implement new features, and improve system functionality while ensuring compliance with coding, security, and performance standards. Your role includes troubleshooting technical issues, optimizing system performance, and collaborating with stakeholders to develop innovative solutions. You will work with technologies such as ASP.NET MVC, Web API, LINQ, OOP, Design Patterns, HTML, CSS, JavaScript, Laravel, ReactJS, Bootstrap3, and Google Maps while applying best practices in agile software development.

RESPONSIBILITIES

• Develop web services and APIs for system integration
• Gather and document business requirements from clients and internal teams
• Design, implement, and enhance applications using LEMP Stack technologies
• Maintain and improve software functionality while ensuring coding, security, and compliance standards
• Collaborate with stakeholders, departments, and customers to resolve development and implementation issues
• Troubleshoot and resolve technical problems in a timely manner
• Work with ASP.NET MVC, Web API, LINQ, and OOP to develop scalable applications
• Develop front-end features using HTML, CSS, JavaScript, and frameworks like ReactJS and Bootstrap3
• Maintain version control using SVN and apply agile development methodologies
• Write unit tests, refactor code, and optimize query performance for relational databases
• Support and document internal tools, software development processes, and best practices
• Provide technical support to operational strategies aligned within your program and initiatives that optimize processes, enhance productivity, and ensure quality across all program functions
• Ensure 100% of planned hours are worked and recorded
• Identify and forward to your leadership any opportunities that could lead to growth within your work area
• Participate in growth efforts as requested
• Ensure all contractual deliverables are met/exceeded to the customer's satisfaction
• Complete personal PDP and attend staff meetings and Storytime (with camera on)
• Build productive and positive professional relationships with clients within your program
• Execute all contract requirements as assigned in accordance with the contract-specific LCAT and requirements
• Perform other related duties as assigned

KEY QUALIFICATIONS

• Clearance: Active TS/SCI
• Education and Years of Experience: Bachelor's degree or equivalent experience, with 5+ years of experience or a Master's degree with 3+ years of experience.
• Strong experience in full-stack development, including PHP, JavaScript, and relational databases
• Proven ability to develop solutions for complex technical challenges independently

PREFERRED ADDITIONAL QUALIFICATIONS

• Experience with frameworks and libraries such as Laravel, ReactJS, and Bootstrap3
• Knowledge of performance tuning, usability, testing, and automation
• Familiarity with cloud technologies and scalable web application architecture
• Familiarity with AI-assisted development and agentic workflows, including coding agents, MCP integrations, automated tests, and documentation, with human review and configuration control

$122,032 - $188,436 a year

There are a host of factors that can influence final salary including, but not limited to, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, geographic location, education, and certifications.

Our employees value the flexibility Aether Aerospace allows them to balance quality work and their personal lives.

We offer competitive compensation, benefits and learning and development opportunities.

Our unique mix of benefits options is designed to support and protect employees and their families.

Employment benefits include health and wellness programs, income protection, paid leave and retirement and savings.

Equal Opportunity Employer

Aether Aerospace is an Equal Opportunity Employer.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.