1710 - Software Engineer II

Sigma Defense Systems LLC

Huntsville (AL)

On-site

USD 56,000 - 63,000

Full time

3 days ago

Be an early applicant

Get more replies from employers

Send a job-specific resume in minutes.

Benefits offered by this job

Dental and Vision Insurance

Medical Insurance with HSA/FSA/DFSA

Life and AD&D coverage

Employee Assistance Program (EAP)

401(k) with matching

PTO 160 hours

12 floating holidays

Educational Assistance

Highly Competitive Salary

Job summary

Sigma Defense Systems LLC seeks a Software Engineer II to build desktop and web applications, backend services, and hardware-integrated software. You will work across Qt-based desktop clients, web interfaces, and real-time communication layers while supporting field tests and customer demos. Ideal candidates have 3–4 years of software development, strong OOP, networking knowledge, and the ability to travel up to 15%.

U.S. citizenship and security clearance eligibility are required.

Qualifications

Bachelor's degree in CS/CE/SE or related field.
3-4 years software development experience required.
Proficient in object-oriented design and C++.
Strong understanding of networking and TCP/IP.
Experience with Git version control and CI/CD basics.
Good written and verbal communication skills.
U.S. citizen and able to obtain clearance.
Willingness to travel up to 15%.

Responsibilities

Design, implement, test, and maintain desktop and web apps.
Develop backend services and REST APIs.
Integrate software with hardware and external systems.
Support field testing, customer demos, and documentation.
Collaborate in architecture reviews and planning.

Skills

C++

Python

JavaScript

TypeScript

Linux

Git

REST APIs

Networking

TAK

Education

Bachelor's degree in CS/CE/SE

Tools

Angular

React

PostgreSQL

Docker

gRPC

WebSockets

Job description

Sigma Defense is seeking a Software Engineer II to join our team developing software solutions for communications, tactical, and hardware-integrated systems. This role involves a combination of desktop application development, web application development, backend services, hardware integration, and system testing.

The ideal candidate enjoys solving technical challenges, learning new technologies, and working across multiple disciplines. This position offers opportunities to develop desktop and web-based applications, integrate software with hardware systems, support customer demonstrations, and participate in field testing activities.

Equal Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

Requirements

3-4 years of software development experience (professional, internship, academic, or personal project experience considered)
Experience with object-oriented software development principles
Understanding of networking fundamentals and TCP/IP communications
Experience using Git or similar version control systems
Strong analytical, troubleshooting, and problem-solving skills
Ability to learn new technologies and adapt to evolving project requirements
Strong written and verbal communication skills
Ability to work independently and collaboratively within a small engineering team
Ability to travel up to 15% of year
Must be a U.S. citizen

Candidate Differentiators

Experience with Qt and desktop application development
Experience developing web applications using Angular, React, Vue, or similar frameworks
Experience developing REST APIs and backend services
Experience with PostgreSQL, SQL databases, or database design
Experience with gRPC and Protocol Buffers
Experience with WebSockets and real-time data streaming
Experience with Docker or containerized deployments
Experience developing TCP/UDP network applications
Experience working with geospatial technologies or mapping applications
Experience programming embedded systems, microcontrollers, or Arduino-based devices
Experience integrating software with hardware devices and external systems
Experience with Team Awareness Kit (TAK) technologies, including ATAK, WinTAK, TAK Server, and Cursor-on-Target (CoT) is preferred

Computer Programs/Software

C++
Python
JavaScript
TypeScript
Linux

Personnel Clearance Level

Candidate must possess or have the ability to obtain an active Secret security clearance or higher
Clearance may be sponsored for the right candidate

Education Requirements

Bachelor's degree from an accredited college or university in Computer Science, Computer Engineering, Software Engineering, Electrical Engineering, or related field of study

Essential Job Duties (not all-inclusive)

Design, develop, test, and maintain desktop and web-based software applications
Develop and maintain software using C++, Python, JavaScript, TypeScript, and related technologies
Develop desktop applications using frameworks such as Qt
Develop and maintain modern web applications using frameworks such as Angular, React, or similar technologies
Design and implement backend services, REST APIs, and real-time communication interfaces
Develop and maintain client/server applications utilizing TCP/IP, UDP, WebSockets, gRPC, and related communication technologies
Integrate software with hardware devices, sensors, and external systems
Develop and maintain Protocol Buffer message definitions and communication interfaces
Support database-driven applications and data visualization tools
Troubleshoot and resolve software defects throughout the development lifecycle
Develop technical documentation, interface control documents (ICDs), user guides, and test procedures
Participate in software architecture discussions, design reviews, and technical planning activities
Support customer demonstrations, field testing, system integration activities, and operational evaluations