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Senior Software Engineer Jobs in Poolesville, MD

Senior Software Engineer

Silver Spring, MD · On-site

$126K - $167K/yr

ActioNet has an opening for a Senior Software Engineer requiring a Public Trust clearance located s Hybrid (1-2 days on-site) in Silver Spring, MD . ActioNet is an IT service provider and solutions ...

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.

Senior Software Engineer

Silver Spring, MD · On-site

$126K - $167K/yr

Description ActioNet has an opening for a Senior Software Engineer requiring a Public Trust clearance located s Hybrid (1-2 days on-site) in Silver Spring, MD . ActioNet is an IT service provider and ...

Senior Software Engineer

Silver Spring, MD · On-site

$126K - $167K/yr

Description ActioNet has an opening for a Senior Software Engineer requiring a Public Trust clearance located s Hybrid (1-2 days on-site) in Silver Spring, MD . ActioNet is an IT service provider and ...

Senior Software Engineer

Washington, DC · Remote

$138K - $182K/yr

As a Senior Software Engineer on our team, you will design and deliver mission-critical software and be a key contributor in ensuring that our system meets our customers' needs. You will develop ...

Senior Software Engineer

Washington, DC · On-site

$138K - $182K/yr

As a Senior Software Engineer on our team, you will design and deliver mission-critical software and be a key contributor in ensuring that our system meets our customers' needs. You will develop ...

Senior Software Engineer

Ashburn, VA · On-site

$130K - $190K/yr

This position is an opportunity to work on a software engineering team with senior staff members guiding the development of mission-critical planning and decision-support systems for government ...

Senior Software Engineer

Brookeville, MD · On-site

$145K - $212K/yr

HyerTek is seeking a Senior Software Engineer to build, secure, and modernize enterprise applications operating in Azure Government and classified environments. This is a hands-on senior engineering ...

Senior Software Engineer

Chantilly, VA · On-site

$125K - $165K/yr

Senior Software Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) has an exciting opportunity for a Senior Software Engineer to join the National Systems Programs (NSP ...

Senior Software Engineer

Chantilly, VA · On-site

$125K - $165K/yr

Senior Software Engineer Company: The Boeing Company Boeing Defense, Space & Security (BDS) has an exciting opportunity for a Senior Software Engineer to join the National Systems Programs (NSP ...

Senior Software Engineer

Washington, DC · On-site

$138K - $182K/yr

ISL is looking for a skilled, hard-working Senior Software Engineer to help build amazing experiences for some of the biggest brands in the world. We're a down-to-earth, hardworking team that's not ...

Senior Software Engineer

Washington, DC · On-site

$138K - $182K/yr

ISL is looking for a skilled, hard-working Senior Software Engineer to help build amazing experiences for some of the biggest brands in the world. We're a down-to-earth, hardworking team that's not ...

Senior Software Engineer

Mclean, VA · On-site

$123K - $163K/yr

The Senior Software Engineer provides strategic technical leadership, championing architectural excellence and driving innovation across the development lifecycle. This role balances visionary ...

Senior Software Engineer

Mclean, VA · On-site

$123K - $163K/yr

The Senior Software Engineer provides strategic technical leadership, championing architectural excellence and driving innovation across the development lifecycle. This role balances visionary ...

Showing results 41-60

Senior Software Engineer information

See Poolesville, MD salary details

$75.1K

$142.5K

$190.9K

How much do senior software engineer jobs pay per year?

As of Sep 13, 2026, the average yearly pay for senior software engineer in Poolesville, MD is $142,509.00, according to ZipRecruiter salary data. Most workers in this role earn between $121,800.00 and $160,600.00 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 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.

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 does a senior software engineer do?

A senior software engineer designs, develops, and maintains software applications, often leading projects and mentoring junior team members. They analyze requirements, write code, perform testing, and collaborate with cross-functional teams to ensure quality and efficiency. Proficiency in programming languages, problem-solving skills, and experience with development tools are essential for this role.

What are the most commonly searched types of Software Engineer jobs in Poolesville, MD?

The most popular types of Software Engineer jobs in Poolesville, MD are:

What cities near Poolesville, MD are hiring for Senior Software Engineer jobs?

Cities near Poolesville, MD with the most Senior Software Engineer job openings:

Infographic showing various Senior Software Engineer job openings in Poolesville, MD as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $142,509 per year, or $68.5 per hour.

Senior Software Engineer

Silver Spring, MD • On-site

ActioNet
IT Services • 1 - 5K employees

$126K - $167K/yr

Full-time

Re-posted 4 days ago


Job description

ActioNet has an opening for a Senior Software Engineer requiring a Public Trust clearance located s Hybrid (1-2 days on-site) in Silver Spring, MD. ActioNet is an IT service provider and solutions integrator headquartered in Vienna, VA that works with the Federal Government and Department of Defense. In this role, you will be responsible for upgrading and designing software applications supporting climate related science and research functions.

Salary: 98,000-193,000

As the Senior Software Engineer you will join a close-knit and highly technical team of developers and systems administrators that support a federal client.  Although, the work is primarily done remotely, you will work onsite as needed for customer meetings, demonstrations, testing, etc. Currently, that includes 1 day per week, plus additional days as needed. 

What is in it for you?

  • As an ActioNeter, you get to be part of exceptional team and a corporate culture that nurtures mutual success for our customers, employees and our communities.
  • We give you the tools to be successful; all you need to do is bring your best ideas, your energy and a desire to develop your skills, experience and career. 
  • We invest in the professional development of our staff with annual training allotments
  • We offer competitive pay and benefits

Duties and Responsibilities

  • Work independently and within team structure as a Full Stack developer
  • Rewrite old code to improve performance, functionality and bring into the .NET ecosystem
  • Collaborate with system and software engineers
  • Ensure the best possible performance, quality, and responsiveness of applications
  • Identify bottlenecks and bugs, and devise solutions to these problems
  • Help maintain code quality, organization, and automatization 

Basic Qualifications:

  • Demonstrated experience with software development (i.e., software requirements analysis, top-down design, structured analysis) in Windows, Linux and Mac environments.
  • Must have an excellent understanding of a variety of programming languages and tools, to include: C#, .NET Core or .NET Framework, SQL Server or Azure SQL, Entity Framework, Git, Jquery.
  • Extensive experience with Software testing, software documentation and experience with Scrum/Agile development methodologies.

Preferred Qualifications:

  • Experience with  custom development of fleet and aviation information systems.
  • Experience supporting Aviation or Marine related applications 
  • Experience with Software Unit Testing
  • Experience with Telerik
  • CompTIA Security+ Certification
  • Certification in Software Engineering or related technical areas


ActioNet is a CMMI-DEV Level 4, CMMI-SVC Level 4, ISO 20000, ISO 27001, ISO 9001, HDI-certified, woman-owned IT Solutions Provider with strong qualifications and expertise in Agile Software Engineering, Cloud Solutions, Cyber Security and IT Managed Services. With 24+ years of stellar past performance, ActioNet is the premier Trusted Innogrator!

Why ActioNet?

At ActioNet, our Passion for Quality is at the heart of everything we do:

  • We are committed to make ActioNet a great place to work and continue to invest in our ActioNeters
  • We are committed to our customers by driving and sustaining Service Delivery Excellence
  • We are committed to give back to our Community, help others and make the world a better place for our next generation

ActioNet is proud to be named as a Top Workplace for the ninth year in a row (2014 - 2022).   We have 98% of Customer retention rate.  We are passionate about the inspirational missions of our customers and we entrust our employees and teams to deliver exceptional performance to enable the safety, security, health and well-being of our nation.

What's in It For You?

As an ActioNeter, you get to be part of an exceptional team and a corporate culture that nurtures mutual success for our customers, employees and  communities. We give you the tools to be successful; all you need to do is bring your best ideas, your energy and a desire to develop your skills, experience, and career.  Are you ready to make a difference?

 ActioNet is an equal-opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.