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Senior Software Engineer Jobs in Washington (NOW HIRING)

Platinum Technologies

Senior Software Engineer

Herndon, VA · On-site

$126K - $166K/yr

The Senior Software Engineer serves as a key contributor to the design, development, and sustainment of mission-critical software solutions that enable semantic data integration, knowledge management ...

Mastercard, Inc.

Senior Software Engineer

Arlington, VA · On-site

$140K - $185K/yr

Title and Summary Senior Software Engineer Who is Mastercard? Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive digital economy that ...

Visionist, Inc.

Senior Software Engineer

Columbia, MD · On-site

$119K - $157K/yr

They are seeking a Senior Software Engineer to lead software development efforts, collaborate with teams, and ensure quality throughout the development lifecycle. Responsibilities : • Lead the ...

Alarm.com

Senior Software Engineer

Tysons Corner, VA

$123K - $162K/yr

Senior Software Engineer - Access Control Are you ready to redefine access control and develop cutting-edge security solutions that make businesses smarter and safer? Do you enjoy leading technical ...

Platinum Technologies

Senior Software Engineer

Herndon, VA · On-site

$126K - $166K/yr

The Senior Software Engineer serves as a key contributor to the design, development, and sustainment of mission-critical software solutions that enable semantic data integration, knowledge management ...

Platinum Technologies

Senior Software Engineer

Herndon, VA · On-site

$126K - $166K/yr

The Senior Software Engineer serves as a key contributor to the design, development, and sustainment of mission-critical software solutions that enable semantic data integration, knowledge management ...

Teknowleap, Inc

Senior Software Engineer

Sterling, VA · On-site

$123K - $163K/yr

SENIOR SOFTWARE ENGINEER (5 positions offered) to design, develop and code applications using Java and Scala; Integrate backend software applications using Postgres and NoSQL databases; Create ...

Visionist, Inc.

Senior Software Engineer

Columbia, MD · On-site

$119K - $157K/yr

They are seeking a Senior Software Engineer to lead technical direction, improve software solutions, and ensure quality throughout the development lifecycle while collaborating with multiple teams ...

Exiger

Senior Software Engineer

Mclean, VA · On-site

$123K - $163K/yr

Senior Software Engineer Location: McLean, VA or Richmond, VA Work Environment: Hybrid Role Sumary: As a Senior Software Engineer at Exiger, you will be responsible for designing and developing ...

GRVTY

Senior Software Engineer

Laurel, MD · Hybrid

$121K - $160K/yr

The Senior Software Engineer shall develop, enhance, and prototype compliance and business processing analytics and tools. The Engineer will also develop new methods for automating compliance ...

New

ClearEdge

Senior Software Engineer

Annapolis Junction, MD · On-site

$125K - $165K/yr

They are seeking a Senior Software Engineer to shape technical direction, architecture, and development practices while developing advanced data visualization capabilities and mentoring less senior ...

Workila

Senior Software Engineer

Washington, DC · On-site

$138K - $182K/yr

Senior Software Engineer . Location: Washington, DC. Direct Placement- $135k Client: GSA The Senior Software Engineer /Solutions Architect will be a key member of an Enterprise Application ...

ClearEdge

Senior Software Engineer

Annapolis Junction, MD · On-site

$125K - $165K/yr

They are seeking a Senior Software Engineer to shape technical direction and develop advanced data visualization capabilities while mentoring less senior engineers. Responsibilities : • Designing ...

Husch Blackwell Llp

Senior Software Engineer

Washington, DC · On-site +1

$138K - $183K/yr

The Senior Software Engineer designs, builds, and maintains the technical systems and application infrastructure that power high-quality, human-centered information experiences. This role is ...

Xpand Corp

Senior Software Engineer

Herndon, VA · On-site

$150K - $170K/yr

We are seeking a Senior Software Engineer to become an integral part of our team! You will be responsible for designing, building and maintaining web applications in a .NET environment.

Alarm.com

Software Engineer II

Tysons Corner, VA · On-site

$98K - $134K/yr

Senior Software Engineer As a Software Engineer II you will work with a team of full-stack developers that work on all server-side aspects of smart home security. Our mandate is very broad and ...

Gigatec Engineering

Senior Software Engineer

Annapolis, MD · On-site

$165K - $255K/yr

What You'll Be Doing (We don't love the bullet points, but we love the work!) As the Senior Software Engineer, you'll play a key role in building and sustaining a mission-focused enterprise web ...

Xpand Corp

Senior Software Engineer

Herndon, VA · On-site

$150K - $170K/yr

We are seeking a Senior Software Engineer to become an integral part of our team! You will be responsible for designing, building and maintaining web applications in a .NET environment.

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All JobsSoftware Engineer JobsSenior Software Engineer JobsSenior Software Engineer Jobs in Washington

Senior Software Engineer information

See Washington salary details

$85.5K

$162.3K

$217.5K

How much do senior software engineer jobs pay per year?

As of Aug 6, 2026, the average yearly pay for senior software engineer in Washington is $162,292.00, according to ZipRecruiter salary data. Most workers in this role earn between $138,700.00 and $182,900.00 per year, depending on experience, location, and employer.

What is a senior software engineer?

A senior software engineer designs, codes, tests, and maintains computer software. While these are your primary responsibilities as a senior software engineer, you may also have supervisory duties. These include overseeing a team of junior software engineers or developers. The senior software engineer title is sometimes used interchangeably with senior developer, and positions for both may share similar job duties and responsibilities. In general, software engineers are distinguished from developers in that software engineers apply engineering principles to software development.

What are some common challenges senior software engineers face when mentoring junior team members?

Senior Software Engineers often mentor junior colleagues, which can be incredibly rewarding but also presents challenges. Balancing mentorship with project deadlines can be demanding, as it requires strong time management and communication skills. Additionally, adapting explanations to different learning styles and levels of experience can be tricky. However, effective mentorship helps build a stronger team and can lead to enhanced leadership opportunities for the senior engineer.

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

AspectSenior Software EngineerSoftware Developer
CredentialsBachelor's or higher in CS or related field; experience often 5+ yearsBachelor's in CS or related field; entry to mid-level experience
Work EnvironmentDesigning complex systems, leading projects, mentoringWriting code, developing features, debugging
Industry UsageUsed across tech companies, startups, enterpriseCommon in software firms, startups, freelance work
Search & ComparisonOften compared for experience level, responsibilitiesCompared for entry-level to mid-level roles

The main difference between a Senior Software Engineer and a Software Developer lies in experience, responsibilities, and scope. Senior Software Engineers typically have more experience, lead projects, and mentor others, while Software Developers focus on coding and feature development. Both roles are essential in tech companies, but the Senior Software Engineer position involves higher-level planning and leadership.

What are the key skills and qualifications needed to thrive as a senior software engineer, and why are they important?

To thrive as a Senior Software Engineer, you need advanced programming skills, deep understanding of software architecture, and several years of experience in software development, often supported by a relevant degree. Familiarity with tools like Git, CI/CD pipelines, cloud platforms, and expertise in technologies such as Java, Python, or JavaScript are typically required. Leadership, problem-solving, and effective communication are crucial soft skills for mentoring teams and collaborating across departments. These skills ensure the delivery of robust, scalable solutions and drive successful project outcomes in complex technical environments.
More about Senior Software Engineer jobs
What are the most commonly searched types of Software Engineer jobs in Washington? The most popular types of Software Engineer jobs in Washington are:
What are popular job titles related to Senior Software Engineer jobs in Washington? For Senior Software Engineer jobs in Washington, the most frequently searched job titles are:
What job categories do people searching Senior Software Engineer jobs in Washington look for? The top searched job categories for Senior Software Engineer jobs in Washington are:
What cities in Washington are hiring for Senior Software Engineer jobs? Cities in Washington with the most Senior Software Engineer job openings:
What are popular job titles related to Senior Software Engineer jobs in WA? For Senior Software Engineer jobs in WA, the most frequently searched job titles are:
Senior Software Engineer jobs near you
Infographic showing various Senior Software Engineer job openings in Washington as of August 2026, with employment types broken down into 85% Full Time, 10% Part Time, and 5% Contract. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution, with an average salary of $162,292 per year, or $78 per hour.

Senior Software Engineer

Platinum Technologies

Herndon, VA • On-site

$126K - $166K/yr

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

Who we are.
Platinum Technologies is a Northern Virginia based integrated solutions firm that specializes in Cybersecurity, Cloud and Digital Services to the Public Sector. Our team solves hard problems and helps our Mission Partners achieve their goals. If you are self-motivated, possess demonstrated learning agility, and are passionate about delivering high-quality work products - we want to hear from you.
We lead with technical expertise, but that is just the tip of the iceberg - the 'Why' matters. At Platinum, we don't hire people to do a job. We provide professional and leadership development to complement our self-motivated domain experts. Our teammates are dot-connecting leaders that operate in a mutually accountable environment to deliver thought leadership, expert technical analysis, and quality execution for our clients.
This position requires an active U.S. Government Security Clearance at the TS/SCI level with CI polygraph.
You.
Platinum Technologies is seeking a Senior Software Engineer to join our team. In this position you will design, develop, integrate, and maintain software applications and services that support Object-Based Intelligence (OBI) mission requirements, enterprise ontologies, and knowledge graph capabilities.
The Senior Software Engineer serves as a key contributor to the design, development, and sustainment of mission-critical software solutions that enable semantic data integration, knowledge management, and advanced analytics. This position develops scalable applications, APIs, and microservices that integrate ontology-driven data models, knowledge graphs, and enterprise data sources to support Object-Based Intelligence workflows. Working within an Agile DevSecOps environment, the Software Engineer collaborates with ontology engineers, database engineers, data scientists, and Government stakeholders to deliver secure, high-performance applications that leverage Semantic Web technologies and AI/ML capabilities.
What you get to do.
  • Design, develop, test, deploy, and maintain software applications and microservices supporting Object-Based Intelligence mission requirements.
  • Develop APIs and backend services that integrate with enterprise ontologies, knowledge graphs, semantic databases, and object-management systems.
  • Implement software solutions that leverage Semantic Web technologies, including RDF, OWL, SPARQL, and graph-based data models, to enable advanced search, reasoning, and data interoperability.
  • Collaborate with ontology engineers, database engineers, data scientists, analysts, and Government stakeholders to translate mission requirements into scalable software solutions.
  • Design and develop secure, containerized applications using modern software engineering practices and cloud-native technologies.
  • Integrate heterogeneous data sources through RESTful APIs, messaging services, and data integration frameworks to support enterprise knowledge management.
  • Develop automated unit, integration, and system tests while supporting continuous integration and continuous deployment (CI/CD) pipelines.
  • Optimize application performance, scalability, and reliability to support high-volume mission operations and advanced analytics.
  • Participate in Agile development activities, including sprint planning, code reviews, technical design sessions, and backlog refinement.
  • Produce and maintain software design documentation, interface specifications, API documentation, and technical implementation guides.
  • Support AI/ML initiatives by developing software services that enable access to semantic data, knowledge graphs, and contextual reasoning capabilities.
  • Provide technical leadership, mentoring, and knowledge transfer activities to Government personnel and project team members on software engineering best practices.

Required Skills.
  • Must be a U.S. citizen and have an active TS/SCI with CI polygraph.
  • Minimum twelve (12) years of experience and an advanced degree or 17 years of experience with a bachelor's degree.
  • Demonstrated experience designing, developing, and maintaining enterprise software applications using modern programming languages such as Java, Python, or C#.
  • Experience developing RESTful APIs, microservices, and distributed applications.
  • Experience integrating applications with relational databases, graph databases, or semantic data platforms.
  • Experience with containerization technologies such as Docker and Kubernetes/OpenShift.
  • Familiarity with Agile software development methodologies, DevSecOps practices, and CI/CD pipelines.
  • Experience with version control systems such as Git.
  • Ability to communicate complex technical concepts effectively to both technical and non-technical stakeholders.

The Company is an Equal Opportunity/Affirmative Action employer. All qualified candidates will receive consideration for employment without regard to disability, protected veteran status, race, color, religious creed, national origin, citizenship, marital status, sex, sexual orientation/gender identity, age, or genetic information.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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