1

Software Engineer Software Engineer Jobs in Fairfax, VA

M&J is seeking a Software Engineer. This role is essential to ensure the reliability, performance, and compliance of Washington Metropolitan Area Transit Authority (WMATA)'s software and operational ...

Software Engineer

Herndon, VA · On-site

$120K - $140K/yr

Software Engineer Herndon, VA TS/SCI with Poly At Bcore, our strength comes from how we deliver impact to the mission. Whether it's architecting critical IT solutions, producing actionable ...

Software Engineer

Herndon, VA · On-site

$120K - $140K/yr

Overview Software Engineer Herndon, VA TS/SCI with Poly At Bcore, our strength comes from how we deliver impact to the mission. Whether it's architecting critical IT solutions, producing actionable ...

M&J is seeking a Software Engineer. This role is essential to ensure the reliability, performance, and compliance of Washington Metropolitan Area Transit Authority (WMATA)'s software and operational ...

M&J is seeking a Software Engineer. This role is essential to ensure the reliability, performance, and compliance of Washington Metropolitan Area Transit Authority (WMATA)'s software and operational ...

PEMCCO is seeking a Senior Software Engineer to provide technical leadership in the design, development, integration, testing, and sustainment of software applications and systems supporting critical ...

Overview VTG is seeking a Software Developer for a 200+ FTE technical development program supporting the Sponsor's Entitlement Programs as well as IdAM /ICAM, Authentication, Authorization ...

They are seeking a Software Engineer to work within Cloud Services, providing software development support using Java and Python. Responsibilities : • The Software Engineer, with a minimum of 4 ...

Software Engineer

Herndon, VA · Remote

$120K - $140K/yr

Overview Software Engineer Herndon, VA TS/SCI with Poly At Bcore, our strength comes from how we deliver impact to the mission. Whether it's architecting critical IT solutions, producing actionable ...

Software Engineer LOCATION Reston, VA 20190 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a talented and motivated Software Engineer ...

Our Software Engineers are at the forefront of defense technology, crafting high-impact, cutting-edge solutions that redefine innovation. We are looking for experienced Software Engineers who will ...

Software Engineer LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a talented and motivated Software Engineer ...

Software Engineer Location: Remote / Alexandria, VA Clearance: Active TS/SCI or eligibility to be cleared GeoDelphi, Inc. dba Whitespace is building Iris, a trust-first Agentic AI platform for global ...

Software Engineer

Arlington, VA · On-site

$69K - $158K/yr

Software Engineer The Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just ...

Software Engineer The Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just ...

Software Engineer The Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking for the chance to not just ...

Software Engineer

Arlington, VA · On-site

$69K - $158K/yr

Arlington, Virginia, USA Software Engineer The Opportunity: As a full stack developer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you're looking ...

Showing results 21-40

Software Engineer Software Engineer information

See Fairfax, VA salary details

$64.9K

$150.8K

$210.1K

How much do software engineer software engineer jobs pay per year?

As of Aug 9, 2026, the average yearly pay for software engineer software engineer in Fairfax, VA is $150,794.00, according to ZipRecruiter salary data. Most workers in this role earn between $122,700.00 and $176,800.00 per year, depending on experience, location, and employer.

What is the difference between Software Engineer Software Engineer vs Web Developer?

AspectSoftware EngineerWeb Developer
Required CredentialsBachelor's in CS or related field, certifications like Microsoft, AWSBachelor's in CS, Web Development, or related field; certifications vary
Work EnvironmentSoftware development teams, offices, remote optionsWeb development teams, agencies, freelance work
Industry UsageTech, finance, healthcare, many sectorsDigital agencies, startups, e-commerce
Common Search/ComparisonOften compared for coding skills and project scopeCompared for front-end/back-end focus and design skills

Software Engineers and Web Developers both create software solutions, but Software Engineers typically work on a broader range of applications across various industries, focusing on system architecture and backend development. Web Developers specialize in building websites and web applications, often with a focus on front-end design or back-end functionality. Both roles require coding skills and collaboration, but their work environments and project types differ.

What job categories do people searching Software Engineer Software Engineer jobs in Fairfax, VA look for? The top searched job categories for Software Engineer Software Engineer jobs in Fairfax, VA are:
What cities near Fairfax, VA are hiring for Software Engineer Software Engineer jobs? Cities near Fairfax, VA with the most Software Engineer Software Engineer job openings:

Software Engineer

M&J Engineering

Rockville, MD • On-site

Full-time

Medical, Dental, Vision, Life, Retirement

Re-posted 12 days ago


Job description

Overview

M&J Engineering, P.C. is a quality provider of multi-discipline consulting services with over 300 employees. Since its inception in 2004, M&J has grown into diversified provider of engineering, construction management, construction inspection, technology, and environmental services to a broad range of clients, including federal, state and city/local agencies, private owners, architects, engineers and contractors.

M&J Engineering is a leader in construction management and inspection, ITS, mechanical, electrical, wastewater, water supply, tunnel airport, port, marine/coastal, environmental engineering, and design-build services for both new infrastructure projects and renovations.

M&J bases its employment and personnel decisions on the principles of Equal Employment Opportunity, with the intent to further the Company's Affirmative Action commitment. M&J does not discriminate on the basis of race, color, religion, national origin, sex, sexual orientation, pregnancy, gender identity or expression, age, disability, genetic information, marital status, citizenship status, employment status, veteran or military status, or any other category protected by law. Our Company vigorously pursues opportunities to recruit and develop job candidates who have the desire and potential for becoming qualified employees through our Affirmative Action Plan.

M&J is seeking a Software Engineer. This role is essential to ensure the reliability, performance, and compliance of Washington Metropolitan Area Transit Authority (WMATA)'s software and operational systems. Candidates will work on designing, developing, and maintaining software applications, troubleshooting issues, and coordinating with engineering and operations teams to provide technical support and implement software solutions.

Responsibilities

Develop a data-driven predictive maintenance program in collaboration with ELES staff Create CAD drawings of existing vertical transportation equipment Support ELES in upgrading the in-house remote monitoring systems Provide technical leadership and specialized technical assistance in problem-solving and application systems development Interface with other offices to ensure integration and support of Authority systems Initiate and conduct studies to measure efficiency and effectiveness of current and proposed systems Prepare concise management-level reports on projects and technical issues Perform software engineering tasks including requirements specification, system design, development, quality assurance, documentation, and testing

Work with assigned application systems such as elevator and escalator monitoring data concentrators, communications, networks, microprocessors, and track circuit monitoring tools Support ELES website applications, requiring knowledge of HTML Employ software engineering techniques and languages including C, C++, Java, JavaScript, PERL, Object-Oriented design, assembly language, proprietary compiler syntax, relational database programming, Boolean logic, and command language interpreters, as well as off-the-shelf software tools Serve as project engineer for system configuration management, including version control and software change oversight Make recommendations on hardware platforms and preferred programming languages for future development Represent ELES at meetings with consultants, contractors, and stakeholders; review designs for WMATA standards compliance and interoperability; provide feedback and approvals Provide operational guidance, technical advice, and training to Authority staff Ensure high levels of performance and reliability for major application systems Develop, review, and update WMATA standards, criteria, and specifications in alignment with industry practices Prepare technical specifications and task orders for procurement of hardware, software, test equipment, and services Work closely with end users to understand information requirements and resolve problems Maintain service request logs and project work plans; prepare status reports to track progress Advise supervisors on system modifications, deficiencies, user requirements, and recommend improvements Coordinate with WMATA personnel to accomplish assigned tasks Prepare materials lists and action items for task completion Provide draft documents to stakeholders, incorporate comments, and finalize Attend required meetings and perform other duties as assigned

Qualifications

Bachelor's degree in computer science, mathematics, engineering, or physical sciences Minimum of six years of progressively responsible experience in time-critical

process-control computer systems design, development, and maintenance

Extensive expertise in software engineering for time-critical control system design, operation, and maintenance Strong project management skills in complex technical environments, including meeting operational requirements, minimizing outages, conserving resources, and ensuring ease of use and maintenance Knowledge of concepts, standards, products, and technical support within assigned areas Ability to independently customize, implement, and maintain assigned systems in both development and production Skills in estimating, scheduling, planning, control, and reporting Ability to manage multiple projects while ensuring system maintenance, monitoring, and tuning are not neglected Ability to maintain current documentation and reporting for assigned systems Strong interpersonal skills to maintain effective working relationships and provide customer-focused service Strong communication skills to exchange complex technical information and resolve issues quickly

Advanced degree in computer science, mathematics, engineering, or physical sciences Knowledge of two or more of the following: C, C++, Java, JavaScript, Object-Oriented languages, ladder logic programming, assembly language, proprietary microprocessor compiler syntax, relational database programming, Boolean logic, and command languages

Benefits

M&J is a leader in providing quality engineering consulting services to a diverse and exciting client base.  We attract experienced professionals who understand proactive client service, safety, risk management and loss prevention practices, quality control, teamwork, and the development of younger staff.  We seek employees who enjoy their work, desire continuous improvement, and want to contribute to the vision and growth of a quality, employee-owned, professional firm. To all full-time employees we provide a comprehensive package of benefits, including medical, dental and eye insurance, 401(k) retirement plan, life insurance, etc. Salary will depend on experience and credentials.

Employment Type: OTHER