senior software developer Jobs in washington

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Python Developer-Full Stack Senior

SOHO Square Solutions

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McLean, Virginia, USA

Contract, Third Party

Job Title: Developer-Full Stack Senior - Python Location: McLean, VA (Onsite) Duration: 3 Months NOTE: Looking for Local candidates only Candidate must be available for in-person interview A coding test is mandatory. A Glider test is preferred, but internal tests aligned with the must-have skills are acceptable. Test results must be attached with the candidate submission. Job Description: Must Have Qualifications: PySpark/Python based microservices, AWS EKS, Postgres Database, SAS, Informat
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Posted 22 days ago | Updated 6 hours ago

Senior Software Engineer

Parsons Services Company

•

Centreville, Virginia, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is looking for an amazingly talented Senior Software Engineer to join our te
Posted 60+ days ago | Updated 10 hours ago

Senior Principal Engineer, Software Engineering

RTX Corporation

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Annapolis, Maryland, USA

Full-time

Date Posted: 2025-06-23 Country: United States of America Location: HMD31: Annapolis, MD 2551 Riva Road , Annapolis, MD, 21401-7435 USA Position Role Type: Unspecified U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: ARINC Incorporated d/b/a Collins Aerospace has an opening for a Senior Principal Engineer, Software Engineering in Annapolis, MD. This is a hybrid role, individual must work in the Annapolis, Maryland office 3 times per week and can work remote two
Posted 12 days ago | Updated 9 hours ago

Senior Software Apps Engineer, iOS-Remote

Generis TEK Inc.

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Remote

Contract

We have Contract role Senior Software Apps Engineer, iOS-Remote for our client at New York NY. Please let me know if you or any of your friends would be interested in this position. Position Details: Senior Software Apps Engineer, iOS-Remote-New York NY Location : REMOTE (EST & PST) Project Duration : 12+ Months Contract Pay Rate : $ 95.00 100.00/hr. on W2 Overview of the team: The team is responsible for the infrastructure of the Yahoo Mail iOS mobile application. We establish best practices f
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Posted 11 days ago | Updated 23 hours ago

Cloud Developer Senior

Jacobs

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Washington, District of Columbia, USA

Full-time

We are searching for a Top Secret cleared Cloud Developer (Senior) to join our team in Washington, DC. You will be working in an organization that's mission is to accelerate operations through data and new analytical insights. In this role you will support ongoing maintenance of multiple Virtual Private Clouds across enclaves, including managing backups, patching, upgrades, developer workstations, monitoring, and overall security posture. The entire section leverages agile and works to provide
Posted 58 days ago | Updated 10 hours ago

Mid-Level Software Developer

SimVentions, Inc

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Remote or Dahlgren, Virginia, USA

Full-time

Overview SimVentions is a 100% employee-owned business and has consistently been voted one of Virginia's Best Places to Work. We are looking for a mid-level Full-Stack Developer experienced with web-based applications development in a microservices architecture to join our team! On this project, Small Scrum teams work together within the Scaled Agile Framework to develop a telecommunications modeling system used to support DOD missions. This position is located on Dahlgren Naval Base. Applican
Posted 54 days ago | Updated 9 hours ago

Sr. Ab-Initio Developer - ONLY W2

nTech Solutions

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Herndon, Virginia, USA

Contract

ONLY W2ONLY W2ONLY W2 Title: Sr. Ab-Initio Developer Location: Reston, VA 20191 Duration: 12 Months Contract + Hire Job Description: Terms of Employment Contract-to-Hire, 12 MonthsCandidates must be comfortable working onsite in Reston, VA once per week.Candidates must reside in the Washington D.C., Maryland, Virginia area.Overview & Responsibilities Our client is looking for a Senior Ab Initio Data Developer to join a team that is working on a MongoDB buildout project for a very, very important
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Posted 29 days ago | Updated 8 days ago

Senior ServiceNow Developer (Remote)

Oscar Technology

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Remote

Contract

Job Title: Senior ServiceNow Developer (Remote, Cleared) Job Type: 12-Month Contract Location: 100% Remote (Must be available to work EST hours) Start Date: ASAP Compensation: Up to $70/hr W2 or $75/hr C2C Overview: We are currently seeking an experienced Senior ServiceNow Developer to support a long-term project. This fully remote opportunity requires a candidate with strong technical expertise across multiple ServiceNow modules and an active U.S. government security clearance. Key Responsib
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Posted 13 days ago | Updated 2 hours ago

Senior Network Security Engineer

Tandym Tech

•

Vienna, Virginia, USA

Contract, Third Party

Tandym is seeking a highly motivated Senior Network Security Engineer to provide support remotely for a top Financial Services client. This is a long-term contract, 100% REMOTE. Responsibilities: Manage and maintain Palo Alto firewall infrastructure, including patching, upgrades, and configuration. Convert traditional Layer 4 firewall rules to Layer 7 using App-ID and User-ID. Create and manage custom App-ID definitions as needed for unique applications. Ensure performance, availability, and c
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Posted 10 hours ago | Updated 2 hours ago

Senior Software Engineer

Base-2 Solutions, LLC

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Fort Meade, Maryland, USA

Full-time

Annual Salary Range: $180,000 to $220,000 with Full Benefits to include Health/Dental/Vision and PTO. Description: Base-2 Solutions is looking for a top-notch software engineer to join our team. We are driven to solve challenging customer problems by leveraging innovative technical solutions. Our software engineers develop the next-generation technologies that drive decision making and impact our national defense. We're looking for engineers who bring fresh ideas from all areas, including inform
Posted 60+ days ago | Updated 10 hours ago

Senior Software Engineer

Leidos

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Annapolis, Maryland, USA

Full-time

The Software Engineer will perform software development lifecycle (SDLC) activities as a member of an Agile development team building a large complex enterprise system. Development includes the full range of turning Agile user stories into implementable concepts, through development, unit testing, integration and test, and deployment of the new capabilities for the large complex enterprise system. Following the Behavior-driven Development (BDD) pattern, developers are responsible for implementin
Posted 60+ days ago | Updated 9 hours ago

Senior Accela Developer

SoftPath Technologies LLC

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Washington, USA

Third Party, Contract

Senior Accela Developer Work Location: Seattle, WA- Primarily remote. However, the client may require occasional on-site presence on short notice, and all proposed candidates must be able to accommodate such visits. Duration: Five-years contract Project Title: Accela Development & Quality Assurance Testing Accela Development: Develop and maintain all aspects of the SDOT Accela implementation, including but not limited to system configuration, scripts, expressions, standard choices, page flows
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Posted 15 hours ago | Updated 2 hours ago

Role: Sr. UI/Angular Developer, Location: 1775 Tysons Blvd, VA.

Satsyil Corporation

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Tysons, Virginia, USA

Full-time

Role: Sr. UI/Angular DeveloperLocation: 1775 Tysons Blvd, VA (Hybrid)Duration: FTE.Job Description: Satsyil Corp. is seeking a motivated Senior UI/Angular Developer to join an exciting modernization project for our client working in a fast-paced and forward-thinking agile environment. Qualified candidates will have proven to experience translating user and business requirements into the structural design of highly intuitive and well-crafted interfaces. The UI Developer will work with a cross-fun
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Posted 12 days ago | Updated 1 day ago

Senior DevOps Developer

ManTech

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Chantilly, Virginia, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Senior DevOps Developer to join our team in Chantilly, VA or Denver, CO. Responsibilities include but are not limited to:Develops ServiceNow solutions and enhancements using core platform capabilitiesDevelops the applications including configuration, report development and data migration, where applicableIdentifies and implements best-practice solutions to address client requirementsPerforms unit-testing and resolves code defectsMigrates co
Posted 60+ days ago | Updated 7 hours ago

Senior DevOps Developer

ManTech

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Chantilly, Virginia, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Senior DevOps Developer to join our team in Chantilly, VA or Denver, CO. Responsibilities include but are not limited to: Develops ServiceNow solutions and enhancements using core platform capabilitiesDevelops the applications including configuration, report development and data migration, where applicableIdentifies and implements best-practice solutions to address client requirementsPerforms unit-testing and resolves code defectsMigrates
Posted 60+ days ago | Updated 13 hours ago

PeopleSoft Developer, Senior-Level

The Squires Group, Inc

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Herndon, Virginia, USA

Full-time

Overview Our client is an award winning integrator assisting various federal agencies with transforming how they deliver their HR Services to over 500,000 employees worldwide. They are in need of a Senior-Level Peoplesoft Developer with Federal Experience to develop custom payroll solutions and remediate application defects and incidents related to the PeopleSoft HCM 9.2 application. This role is based in Herndon, VA and offers a REMOTE schedule. Per our Federal Government Contract, candidates
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Posted 29 days ago | Updated 7 hours ago

Java/J2EE Senior Developer

Apex Systems

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Tysons, Virginia, USA

Full-time

Job#: 2065154 Job Description: Job Description: Design, develop, and maintain Java-based applications to support the client's business operations.Collaborate with product managers, designers, and other stakeholders to understand user requirements and translate them into technical specifications.Ensure the performance, quality, and responsiveness of applications.Develop and implement microservices architecture to enhance application scalability and maintainability.Participate in code reviews, pr
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Posted 60+ days ago | Updated 10 hours ago

Software Engineer V / Sr. Principal Engineer

Medifast, Inc.

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Remote or Baltimore, Maryland, USA

Full-time

About the Opportunity At Medifast, our team members are relentless in our mission of driving Lifelong Transformation, Making a Healthy Lifestyle Second Nature . When you join Medifast, you become part of a dynamic, fast-growing community of highly motivated, like-hearted people who share a passion for promoting health and wellness. Just as OPTAVIA Coaches inspire Clients to reach their personal wellness goals, at Medifast, we inspire each other to bring our best to work each day to further our s
Posted 33 days ago | Updated 6 hours ago

Senior Advanced Digital Signal Processing (DSP) Software Engineer

General Dynamics

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Manassas, Virginia, USA

Full-time

Basic Qualifications Requires a Bachelor's degree in Software Engineering, or a related Science, Engineering or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred. Must have Digital Signal Processing (DSP), C++ and MATLAB experience. CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government
Posted 20 days ago | Updated 9 hours ago

Senior Node.js API Developer

Synechron

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Sterling, Virginia, USA

Full-time, Third Party

We are At Synechron, we believe in the power of digital to transform businesses for the better. Our global consulting firm combines creativity and innovative technology to deliver industry-leading digital solutions. Synechron s progressive technologies and optimization strategies span end-to-end Artificial Intelligence, Consulting, Digital, Cloud & DevOps, Data, and Software Engineering, servicing an array of noteworthy financial services and technology firms. Through research and development in
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Posted 8 days ago | Updated 1 day ago