Jobs in the United States

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Added 1 min ago
Vulnerability Management and Endpoint Security Administrator
Global Enterprise Services, LLC
Fort Belvoir, VA
Independently analyze enterprise vulnerability and endpoint-security posture across Windows, Linux, virtual, and other enterprise environments and recommend technical and risk-based courses…
Added 1 min ago
Junior DevOps Engineer - Platform Deployment & Support
Absolute Business Solutions Corp
Herndon, VA
ABSC is seeking a Secret or TS/SCI-cleared Junior DevOps Engineer – Platform Deployment & Support to support the NGA Data Modernization Services (DMS) program.
Added 1 min ago
Senior AI Operations Engineer
Robinhood
Bellevue, WA · Menlo Park, CA · NY
As a Senior AI Operations Engineer, you'll play a key role in building, operating, and improving the infrastructure behind Robinhood's enterprise AI capabilities. You'll work across AI…
Added 3 mins ago
Lead, Software Engineer
L3Harris Technologies
Herndon, VA
Experience with distributed systems and enterprise-scale applications.
Added 4 mins ago
A
Electronics Test Engineer
Actalent
Merritt Island, FL
- $36 to $43 USD / hour
Job Title: Integration and Test EngineerJob DescriptionThe Integration and Test Engineer defines, documents, analyzes, performs, and interprets tests for products, systems, components, and…
Added 13 mins ago
System Engineer
Exegy
St Louis, MO
We are seeking an experienced System Engineer to join our Managed Services Engineering (MSE) team in St. Louis, MO. You will be our lead specialist in Linux systems, bare-metal…
Added 16 mins ago
BV
Linux Systems Engineer
Bright Vision Technologies
Remote, United States
- $115,000 to $165,000 USD / year
Bright Vision Technologies is seeking a Linux Systems Engineer to build, secure, automate, and operate cloud or enterprise infrastructure and platforms. The work focuses on availability,…
Added 17 mins ago
Lead Software Engineer - Python
Wells Fargo Bank, N. A.
IRVING, TX · CHARLOTTE, NC
Wells Fargo is seeking a Lead Software Engineer (Python) within the Secured Network Services organization. This role will focus on designing and delivering automation solutions that enable…
Added 18 mins ago
Senior Network Engineer / FISMA Compliance Support - PCLOB
NEMEAN SOLUTIONS LLC
DC
Maintain highly available network services and support integrations with Windows Server, Hyper-V, Linux, server virtualization, Active Directory/identity and access services, Citrix, and…
Added 18 mins ago
Principal FPGA Engineer
RTX
United States
In this role as a Principal FPGA Engineer, you will develop FPGA designs for all major vendors and device families including AMD, Altera, and Microchip. Designs commonly support the…
Added 18 mins ago
Software Engineer
PeopleTec, Inc.
HUNTSVILLE, AL
The successful candidate will be an adaptable, agile, experienced software engineer who is a consummate team player capable of spearheading the design and integration of software systems in…
Added 18 mins ago
Site Reliability Engineer II
JPMC page
Tampa, FL
…engineering discipline and operational expertise to help power the systems that move money globally - reliably, securely, and at…
Added 19 mins ago
Senior DevOps Engineer
Expression
Remote, United States
Expression is seeking an experienced Senior DevOps Engineer to support the National Telecommunications and Information Administration (NTIA) Federal Spectrum Data Systems (FSDS) program…
Added 19 mins ago
DevOps Engineer
Expression
Remote, United States
Expression is seeking a mid-level DevOps Engineer to support the National Telecommunications and Information Administration (NTIA) Federal Spectrum Data Systems (FSDS) program within the…
Added 21 mins ago
NWS Lead Software Engineer
General Dynamics Mission Systems, Inc
Pittsfield, MA
As the NWS Lead Software Engineer for General Dynamics Mission Systems, you will provide technical leadership for a frontend or backend software team supporting a complex, distributed…
Added 21 mins ago
Senior Embedded Software Engineer, Onsite
RTX
United States
Experience in C++ design paradigms experience on Linux, VxWorks, or other Real Time Operating Systems.
Added 21 mins ago
Senior Principal Software Engineer
RTX
United States
Working knowledge of Linux, VxWorks or other Real time operating systems
Added 21 mins ago
Senior Principal FPGA Engineer
RTX
United States
In this role as a Senior Principal FPGA Engineer, you will lead development of FPGA designs for all major vendors and device families including AMD/Xilinx, Altera, and Microchip. Designs…
Added 21 mins ago
Principal Platform Software Engineer (Onsite)
RTX
United States
The Principal Platform Software Engineer would be involved with development and implementation of traditional compute, network, storage systems and related deployments, as well as support…
Added 21 mins ago
SW Integration and Test Engineer – Principal SW Engineer
RTX
United States
We are seeking a Software Integration and Test (SWIT) Engineer – Principal Software Engineer to join the Missile Defense Sensors (MDS) Software Department. The MDS Software mission is to…
Added 21 mins ago
Sr Software Integration Engineer (travel required)
RTX
United States
Raytheon is seeking a Software Integration Engineer to join our Dual Band Radar Software Integration Team located in Tewksbury, MA. We integrate software developed in C++, C, and Java.…
Added 22 mins ago
VL
Staff Network Engineer (AI Infrastructure)
vCluster Labs
Remote, United States
- $170,000 to $210,000 USD / year
As a Staff Network Engineer at vCluster Labs, you aren't just configuring switches; you are building the automation logic that configures them. AI Clouds run on InfiniBand and high-speed…
Added 24 mins ago
Senior Security Research Engineer
Referral Board
United States
…security solution. We are looking for a Senior Security Research Engineer to help lead our efforts to build innovative features that secure our users against the latest emerging threats.…
Added 24 mins ago
Electrical Sustainment Engineer
Anduril Industries
Broomfield, CO · Fort Collins, CO
The Anduril Battlespace Awareness Radar team develops state-of-the-art radar systems, deployed to tackle the most significant security challenges of America and its allies. The Radar team…
Added 26 mins ago
Software Engineering Intern
LEIDOS, INC.
Arlington, VA
Design, implement, and test real-time C/C++ software for multi-core systems running Linux or a real-time operating systems, such as VxWorks.

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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