Jobs in the United States

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Added 12 hours ago
Manufacturing Engineer III
Blue Origin Personnel, LLC
Space Coast, FL
Serve as the manufacturing technical focal for assigned subsystems and/or Assembly, Integration, and Test (AI&T) activities, establishing manufacturing plans for vehicle architectures and…
Added 12 hours ago
Lead Manufacturing Engineer
Blue Origin Personnel, LLC
Huntsville, AL
Senior Manufacturing Engineer – BE-7 & Blue Thrusters
Added 12 hours ago
Avionics Harness Design Engineer III
Blue Origin Personnel, LLC
Space Coast, FL
…history of crewed spaceﬂight. The Electrical Harness Design Engineer is the primary responsible of developing the engineering, system interconnect diagrams (SID), block interconnect…
Added 12 hours ago
System Engineer II - New Glenn
Blue Origin Personnel, LLC
Space Coast, FL
…“millions of people living and working in space” and apply system engineering practices across subject areas predicated to a high degree on your technical skills. You will support the…
Added 12 hours ago
Software Test Engineer II
Wabtec
Germantown, MD
This is an early-career Software Test Engineer II position intended for engineers with a minimum of two years of relevant experience in embedded systems and software validation. The…
Added 12 hours ago
Application Developer
Reflexive Concepts
Annapolis Junction, MD
In addition to core development responsibilities, this role includes a system administration component. The engineer will help manage and optimize MongoDB services, work within a Linux…
Added 12 hours ago
Automated Test Engineer
Reflexive Concepts
Annapolis Junction, MD
Reflexive Concepts is seeking an Automated Test Engineer to join our team!
Added 12 hours ago
LD
Systems Engineer I
Leonardo DRS, Inc.
Bridgeton, MO
- $66,049 to $85,864 USD / year
…simulation, systems engineering documentation, risk management, system integration, and verification and…
Added 12 hours ago
Telecommunications Specialist III
LinTech Global
Durham, NC
…technical teams to maintain reliable services and deliver approved system…
Added 12 hours ago
Software Engineer IV
LinTech Global
Durham, NC
Dexian Government Solutions is seeking a Software Engineer IV to serve as the Application Development and Support Lead for our EPA BSMD proposal effort. This role provides technical…
Added 12 hours ago
Network Engineer III
LinTech Global
Durham, NC
Dexian Government Solutions is seeking a Network Engineer III to support our EPA BSMD proposal effort. This position serves as the Service Area Lead for Data Telecommunications Support,…
Added 12 hours ago
ZT
Embedded Software Engineer, Automated Quality & Test
Zaden Technologies, Inc.
Huntsville, AL
- $130,000 to $165,000 USD / year
Implement comprehensive test strategies including unit, integration, system, and regression testing
Added 12 hours ago
PD
Senior AI Engineer (Agentic Systems)
Pantheon Data
Reston, VA
- $120,000 to $220,000 USD / year
Pantheon Data is seeking a Senior AI Engineer (Agentic Systems) to design, build, and operate the agentic framework at the core of our AI platform in AWS GovCloud, serving workloads that…
Added 12 hours ago
Engineer III - Protection & Control
Qualus
Westborough, MA
Power your Future with Qualus as a Protection & Control Engineer III. As a Substation P&C Engineer III, you’ll serve as the technical subject matter expert, leading the design of…
Added 12 hours ago
Data Test Engineer
CACI
Remote, United States
Join our team supporting USTRANSCOM's Joint Transportation Management System (JTMS), a mission-critical enterprise platform that modernizes transportation, logistics, and financial…
Added 12 hours ago
Section 508 Compliance Test Engineer
CACI
Remote, United States
Join our team supporting USTRANSCOM's Joint Transportation Management System (JTMS), a mission-critical enterprise platform that modernizes transportation, logistics, and financial…
Added 12 hours ago
Grafana Data Engineer Senior
GD Information Technology, Inc.
United States
The Data Engineer Senior will be responsible for delivering data engineering, data platform, reporting, and analytics capabilities that support operational decision-making and fulfill our…
Added 12 hours ago
Windows Systems Administrator - TS/SCI with Polygraph
GD Information Technology, Inc.
United States
Engineer systems administration-related solutions for various project and operational needs
Added 12 hours ago
Spaceflight Hardware Mechanical Engineer
METECS
Houston, TX
…modeling and simulation, robotics, software, embedded systems, and system integration and…
Added 12 hours ago
Spaceflight Hardware Electrical Engineer
METECS
Houston, TX
…modeling and simulation, robotics, software, embedded systems, and system integration and…
Added 12 hours ago
Lead Spaceflight Hardware Systems Engineer
METECS
Houston, TX
METECS is seeking an experienced Lead Spaceflight Hardware Systems Engineer to provide systems engineering leadership for the development, integration, verification, qualification,…
Added 12 hours ago
M
Google Cloud Engineer
Markon
Herndon, VA
- $170,000 to $200,000 USD / year
Markon is seeking an experienced Google Cloud Engineer (Mid–Senior) to support an Intelligence Community client in Chantilly, Virginia. This position will design, deploy, secure, and…
Added 12 hours ago
SI
Lead Full Stack Security (Systems & Software) Engineering (GRC)
Salesforce, Inc.
WA
- $172,500 to $260,100 USD / year
…Compliance (GRC) platform at Salesforce. As a lead full stack engineer, you own the architecture, technical roadmap, and delivery of the platform's core engines, including policy as code,…
Added 12 hours ago
Software Developer
ATTAINX INC
Montgomery, AL · Greensboro, NC · Columbus, OH · Asheville, NC · Stennis Space Center, MS · Mechanicsburg, PA · Scottsdale, AZ · Charles Town, WV · Cincinnati, OH · Fort Wayne, IN · Albuquerque, NM · Jacksonville, FL · Fort Belvoir, VA · Arlington, VA · Fort Campbell, KY · Overland Park, KS · Silver Spring, MD · Columbia, MO · Issaquah, WA · Pittsburgh, PA · Dallas, TX · Boise, ID · Cheyenne, WY · Billings, MT · Helena, MT · Spokane, WA · Fort Sill, OK · Sioux City, IA · Terre Haute, IN · Conway, AR · Jacksonville, AR · Fort Knox, KY · Kalamazoo, MI · Nellis AFB, NV · Raleigh, NC · Orlando, FL · Alpharetta, GA · Baton Rouge, LA · PETERSON, CO · Santa Fe, NM · Madison, WI · JBSA Randolph, TX · San Antonio, TX · Durham, NC · Kansas City, MO · Saint Charles, MO
AttainX, Inc. is in search of a Full-Stack developer responsible for the design and implementation of a distributed enterprise application with external and internal interfaces utilizing…
Added 12 hours ago
A
Associate Device Software Engineer
AbbVie
Irvine, CA
- $58,656 to $103,500 USD / year
The Associate Device Software Engineer contributes to the development and lifecycle support of software for hardware-integrated, regulated medical devices and associated engineering tools.…

Reflexive Concepts

Application Developer

Annapolis Junction, MD, United States

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Job details

Experience: 10+ years of experience with a Bachelor's degree
Posting language: English
Posted: Nov 2, 2026

Original job description

Reflexive Concepts is seeking an Application Developer to join our team!

In this hands-on backend role, you will build Java (and some Python) libraries and integration services that convert constantly changing data sources into a common, reusable schema used across the organization, while also helping manage MongoDB services and day-to-day Linux operations.

Requirements:

Design, develop, and maintain backend libraries and services that transform diverse data formats into a common, reusable schema consumed by multiple applications across the organization. This is a hands-on technical role focused primarily on Java development, with secondary responsibility for Python-based components where needed. There is no UI work; the emphasis is on building robust libraries and integration services that can reliably ingest, interpret, and convert constantly changing data sources into a standardized internal model.

In addition to core development responsibilities, this role includes a system administration component. The engineer will help manage and optimize MongoDB services, work within a Linux ecosystem, and perform operational tasks such as upgrading servers, installing RPMs, monitoring services, and troubleshooting environment issues.

Key responsibilities include:

Designing and implementing data ingestion and transformation logic
Creating and maintaining shared libraries for common data formats
Ensuring performance and scalability
Contributing to architectural decisions around data modeling and integration patterns
Collaborating through modern development practices, including Git-based source control, code reviews, and continuous improvement of development workflows

The ideal candidate has deep experience in Java (and familiarity with Python), a strong understanding of working with varied data formats (e.g., JSON, XML, CSV, and custom structures), and practical experience administering Linux-based systems and MongoDB in production environments. Strong problem-solving skills, attention to detail, and a willingness to engage in both development and operational tasks are critical for success in this role.

Qualifications:

10+ years of experience with a Bachelor's degree
Bachelor's degree in Electrical Engineering or Computer Science or Computer Engineering or Mathematics. Four (4) years of equivalent related military experience may be substituted for the Bachelor's degree
or Master of Computer Science or Computer Engineering
Shall have knowledge and experience in three (3) or more of the following:
System Requirements Analysis
Software System Design
Software System Development
Software System Integration
Software System Testing
Experience in four (4) or more of the following:
Developing software applications in C, C++, or Java
Developing software applications for Unix, Linux, or Windows environments
Developing DLLs for the Windows environment
Development on computer telephony platforms using computer technology cards such as Dialogic
Object-oriented programming
Working knowledge of common protocols/standards such as TCP/IP, SNMP, H.323, X.25, 802.11, 802.16, SIP, MEGACO, or MGCP
Web development, with proven knowledge of XML, PHP, MySQL, ColdFusion, or Apache
Script writing using Perl, Python, Bourne shell, C shell, or other proprietary scripting languages
Database experience with Sybase, Oracle, or Microsoft
Reverse engineering and analysis of software
Kernel knowledge of Unix (Linux)
Bit-level data analysis

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