929 Junior Software Engineer jobs in Washington,DC

Real-Time Software Engineer

Leidos

Falls Church, VA 22046

~ 17 min OnsiteFlexible SchedulePaid Time OffRetirement Benefit

Must have an active Secret clearance and be eligible to obtain a TS/SCI.
Bachelor's Degree in Computer Engineering, Electrical Engineering, or Computer Science, or related discipline
4+ years of software development experience, including strong experience in programming in Python, MATLAB, or C++
Strong understanding of object-oriented design
Basic understanding of hardware-software interaction and basic computer architecture
Experience with hardware interfaces (e.g. PCIe, UART, Ethernet)
Experience with build tools (e.g. GCC, CMake, or Make)
Experience using version control (e.g. git, Subversion) and continuous integration software tools (e.g. Jenkins)
Experience with software testing tools and methodology
Experience in creating and maintaining technical documentation for developed software
Ability to communicate and share ideas, concepts, and designs with a team of engineers
Demonstrated ability and motivation to continually learn new technical skills and concepts
Understanding of unit test frameworks and test-driven development practices

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Cyber Software Engineer

ManTech

Herndon, VA 20170

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Software Development Engr III, Minimal Access Security Team (MAST)

Amazon.com Services LLC

Herndon, VA 20171

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2026 PhD Graduate - Autonomous Systems Design Engineer: Controls, Navigation, Sensors, and Simulation

Johns Hopkins Hospital

Laurel, MD 20707

$105,000/yr

~ 29 min OnsiteEducation AssistanceHealth InsurancePaid Time OffRetirement Benefit

Are pursuing a PhD in Aerospace Engineering, Mechanical Engineering, Electrical Engineering, Software Engineering Systems Engineering, Physics, Mathematics, or Computer Science.
Proven internship experience or possess extensive classroom project work in a subject matter in any of the following areas: guidance, inertial navigation, modern/adaptive control, classical control, optimization; electromagnetic wave propagation, RF antennas, optics, signal and image processing, radar, programming/coding; dynamics, programming/coding, algorithms, optimization; hardware testing, embedded systems, sensor testing artificial intelligence and software development.
Are skilled in or have knowledge of coding practices in Matlab/Simulink, C++, Python, or other languages
Have a curiosity and appetite for exploring and solving hard problems.
Are able to obtain an Interim Secret security clearance by your start date and can ultimately obtain a Secret level clearance. If selected, you will be subject to a government security clearance investigation and must meet the requirements for access to classified information. Eligibility requirements include U.S. citizenship.
Have a minimum 3.0 GPA on a 4.0 scale. Note: When prompted to upload attachments, please include a copy of your college transcripts (unofficial transcripts are acceptable).

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Systems Engineer Senior I

Ultra Electronics Ocean Systems

Chantilly, VA 20151

~ 37 min OnsiteHealth InsurancePaid Time OffRetirement Benefit

Strong attention to detail and work ethic.
Knowledge of proper systems engineering discipline and rigor required for disciplined systems development.
Significant experience with Radar systems or similar signal processing systems.
Experience and knowledge of algorithms used for navigation, periscope detection, discrimination or other parts of traditional Radar signal processing.
Laboratory knowledge including setup and use of Linux-based system integration, test, and execution.
Experience planning, reviewing, and executing integration and test events for combined hardware and software systems
Ability to document and specify system and subsystem level requirements.
Experience working with a team to jointly develop a system during all phases of the development lifecycle.
Review/provide technical input and cost estimation support.
Provide systems engineering leadership to a small group of systems or mixed discipline engineers.
Willingness to travel (10%).
Candidates must be eligible to obtain the relevant security clearance required for the role, due to the nature of the programmes we deliver for our customers.
6+ years with BS Degree in Systems/EE Engineering or related discipline

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Senior Backend Developer, Data Platform

Vantor

Reston, VA 20190

$182,000-$200,200/yr

Hybrid~ 30 minEducation AssistanceHealth InsuranceRetirement Benefit

To be eligible for this position, you mustbe a U.S. Citizen.
This position requires an active U.S. Government Security Clearance at the TS/SCI level with CI polygraph.
Export Control/ITAR:_ Certain roles may be subject to U.S. export control laws, requiring U.S. person status as defined by 8 U.S.C. 1324b(a)(3).
Strong proficiency in Python
Experience building backend systems, APIs, or distributed services in production environments
PostgreSQL and Elasticsearch proficiency
Familiarity with AWS, especially S3, RDS, and other data centric services
Current/active TS/SCI with a current CI polygraph or be willing and able to obtain a CI polygraph.
Bachelor's degree in a related field, e.g. Computer Science, Systems Engineering or equivalent experience
Understanding of software engineering fundamentals including testing, version control, CI/CD, and system design
Tenacious troubleshooting, problem solving and error fixing mentality
Strong communication and collaboration skills, ability to work, collaborate and thrive on a small technical team.
10\\+ years of professional software engineering experience, with strong backend development skills

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Lead Application Developer / Merrifield Site Manager

GovCIO LLC

Fairfax, VA 22031

$205,000/yr

~ 26 min Onsite

Bachelor's with 12+ years (or commensurate experience)
7+ years of professional Java development experience
Expertise with Java frameworks such as Spring, Spring Boot, Hibernate, and JPA
Active Secret Clearance with ability to obtain and hold DEA suitability
Strong proficiency in modern JavaScript
Deep understanding of object-oriented programming, design patterns, and Java best practices
Solid understanding of RESTful web services and API design
Experience with version control systems (Git using ADO or GitHub)
Comfortable working in Agile/Scrum teams
Effectively communicate in English; both oral and written
Multi-task along with attention to detail
Self-motivation, organization, time-management, and deductive problem-solving skills
Work independently and as part of a team
Networking, web technologies (HTML, CSS, JavaScript), Microsoft Windows
Familiarity with build tools like Maven or Gradle
Strong understanding of relational databases (e.g., PostgreSQL, MySQL) and ORM tools
Experience with unit testing, integration testing, and test-driven development (TDD)

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Principal Systems Engineer-Defense

Curtiss-Wright

Ashburn, VA 20147

$144,100-$190,000/yr

~ 42 min OnsitePaid Time OffRetirement Benefit

10 plus years of experience at US DoD Primes or at a company that directly supports them
Knowledge of system hardware/software development, integration and test for deployed military vehicle applications
Expert knowledge of the systems engineering tools DOORS and Cameo
Working knowledge of engineering development tools like Clearquest, JIRA, and Rational Development Tools
Ability to operate and debug Linux and VxWorks based computing systems
Solid understanding of SOSA and VPX system design standards
Solid understanding of serial communication protocols such as MIL-STD-1553, RS422, RS485, RS232, 10G and 100G Gigabit Ethernet, PCIe, USB
Solid understanding of the latest processing and graphics solutions
Excellent troubleshooting skills of rugged computing systems
Ability to lead in a team environment
Ability to drive clarity to ambiguous requests or requirements
Ability to work well in a fast-paced professional office environment
BS Computer Science, BS Software Engineering, BS Electrical Engineering preferred

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Chief Engineer, Intel Systems

Anduril Industries

Reston, VA 20190

~ 30 min OnsiteHealth Insurance

15+ years of progressive experience in complex network systems engineering, R&D, and product development, with a significant portion in a leadership or Chief Engineer capacity for multi-disciplinary systems.
Deep and broad technical expertise across network system design and implementation, encompassing significant experience in at least two of the following areas, with a strong understanding of the others:
Software Engineering: Network protocols (e.g., IP, routing, transport layer), distributed systems, embedded networking, real-time operating systems, cybersecurity for networks, data link layer implementation.
Electrical Engineering: Digital communications, power systems for ruggedized network nodes, high-speed digital design for embedded processors, PCB design for communication systems.
Mechanical Engineering: Ruggedized enclosure design, thermal management for radios and processors, vibration/shock mitigation, integration of network hardware onto various platforms (airborne, ground, maritime, soldier-worn).
Cross-disciplinary systems integration experience, particularly bridging the gap between hardware and software for robust network performance in demanding environments.
Proven ability to define, architect, and lead the development of highly complex, integrated network systems from concept through deployment and sustainment.
Exceptional leadership skills with a track record of building, mentoring, and inspiring high-performing multi-disciplinary technical teams in fast-paced, challenging environments.
Demonstrated experience in strategic technical planning, roadmapping, and managing technical debt while delivering on aggressive schedules for networking products.
Strong problem-solving acumen, with the ability to break down highly ambiguous technical challenges related to network performance and resilience, and drive to practical, innovative solutions.
Excellent communication, presentation, and interpersonal skills to effectively convey complex technical concepts to diverse audiences, including executives, customers, and technical teams across different engineering disciplines.
Bachelor's degree in Computer Science, Electrical Engineering, Mechanical Engineering, Aerospace Engineering, Robotics, or a related technical field. Master's or Ph.D. preferred.
Minimum Secret Security Clearance required. (Active TS/SCI strongly preferred).

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Systems Engineer

Systems Planning and Analysis

Washington, DC 20011

HybridHealth InsuranceRetirement Benefit

Bachelor's degree in Science, Technology, Engineering, Mathematics, Computer Science, or other related technical degree
3+ years of relevant experience
DoD Secret clearance, and the ability to maintain throughout employment

SmartExplore AI is experimental.