Senior Application Developer
Green Key Resources
Job DetailExperience Level Sr LevelDegree Type Bachelor of Science (BS)Employment Full TimeWorking Type On SiteJob Reference 0000020519Salary Type AnnuallyIndustry ConstructionSelling Points Lead impactful modernization projects for enterprise applications in a dynamic environment. Collaborate with stakeholders to drive innovation and long-term system improvements. Enjoy comprehensive benefits and professional growth opportunities.Job DescriptionSenior Application Developer OverviewThe Senior Application Developer ensures stability, support, and modernization of enterprise applications critical to business operations.Serve as the primary technical owner for legacy systems built on the Microsoft stack.Collaborate with IT leadership, stakeholders, and vendors to maintain and improve application platforms.Balance immediate support needs with long-term modernization goals and system upgrades.Contribute to decisions regarding system architecture, refactoring, and potential replacements.Work in a high-performance environment requiring flexibility and commitment to project deadlines.Opportunity to work on-site in a professional office and dynamic construction environments.Comprehensive benefits package including health, retirement plans, and professional development support.Senior Application Developer Key Responsibilities & DutiesMaintain, troubleshoot, and enhance legacy applications to ensure stability and performance.Analyze and reverse-engineer systems to understand business logic and integrations.Design and implement improvements to application architecture and database design.Write and optimize complex T-SQL queries, stored procedures, and database objects.Develop new functionality using C#, .NET, JavaScript, and related technologies.Support IIS-hosted applications, including deployment and configuration.Contribute to modernization efforts, including cloud migration and system upgrades.Document system behavior and dependencies to improve long-term supportability.Collaborate with stakeholders to translate workflows into technical solutions.Senior Application Developer Job RequirementsBachelor’s degree in Computer Science, Software Engineering, or related field.6+ years of experience with Microsoft ecosystem applications (C#, VB.NET, SQL Server).Strong experience with .NET Framework applications and IIS-hosted environments.Proficiency in HTML, CSS, JavaScript, and troubleshooting complex codebases.Preferred experience modernizing legacy applications and migrating to Azure or AWS.Familiarity with Git, Azure DevOps, and CI/CD pipelines.Experience with low-code platforms like Mendix or PowerApps is a plus.Ability to work independently and manage technical solutions effectively.
- ...Senior Application Developer Location: Northern Virginia Schedule: 100% onsite Experience: 6+ years Green Key is seeking a Senior Application Developer to join an established organization in Northern Virginia. This is a highly hands-on opportunity for an experienced...SeniorFull time
$120k - $190k
OverviewAs a Steampunk Senior Salesforce Application Developer, you will work with Technical/Solutions Architects and Business Analysts to translate business requirements into well‐architected solutions that best leverage the Salesforce platform. Develop, test, document...SeniorWork experience placement- ...Job Title: Senior Application Developer (NOAA/AWIPS) Company: BLN24 About Us: We find strength in teamwork-a better you is a better us BLN24 is an award-winning Management Consulting Firm that supports the U.S. Federal Government in successfully achieving their...SeniorRemote work
- ...contractor that provides strategic IT services that meet mission needs for Defense and Federal customers. We are hiring a Senior Application Developer to support an enterprise-level program within a federal environment. Job Description and Responsibilities Develop...SeniorFor contractorsWork experience placementWork at officeLocal areaRemote work
$65k - $105k
...discipline. ~6+ years of experience in application development and support. ~ Strong... ...We will own and support an internally developed application, including ongoing enhancements... ...Northern Virginia offering a 100% onsite Senior Application Developer opportunity with significant...SeniorFull time- ...by using our proven customer-centric, value-driven business practices and service delivery methodologies. As an Senior Appian Application Developer who is passionate about delivering value to your customers, you will be working closely with an equally...SeniorRemote work
- Job-ID: 32977Category: Application EngineeringLocation: Vienna, VA, United States; Pensacola, FL, United States; Winchester, VA, United... ...readiness and adoption across technologies stacks and teams. Develop thorough technical documentation including diagramsAbout the companyNavy...SeniorFull timeInternshipMonday to Friday
$125k - $140k
MicroHealth is seeking an experienced Senior SQL Application Developer with strong expertise in SQL, database administration, Linux environments, database migration, and reporting solutions. This role provides advanced technical support for the program, serving as the...SeniorFull timeDay shift- Freddie Mac is seeking software engineers for applications development, prototyping, modeling and high level technical consulting in McLean, VA. You will perform what-if analyses to simulate network stress tests, predict effects of configuration changes, and identify bottlenecks...SeniorRemote jobPart time
$100k - $150k
...Required:ICAgile Certified or Certified Scrum MasterServiceNow Certified System Administrator2+ Implementation Specialist and/or Application Developer CertificationsCompTIA Security (as applicable) Salary Range: $100,000-$150,000We will accept applications for this position...SeniorFull timeLocal areaRemote workWorldwide$155k - $180k
...Senior Flight Software Engineer (Rust) Santa Barbara, CA, Reston, VA or Arlington, VA | On-site $155K to $180K+ base, plus equity and relocation I've personally placed 4 embedded Rust folks in this team over the past 12 months and now we're expanding flight software...SeniorFull timeRelocationRelocation package- ...About the Role We’re looking for a Senior .NET / Azure Engineer to join a high-impact... ...federal client. This is not a typical developer role; we need someone who can step into... ...You’ll Be Working On Building modern applications using ASP.NET Core and Azure Replacing...SeniorFull time
- Job DescriptionWe have an Immediate opening for Salesforce Developer role in McLean - VA.Position: Salesforce DeveloperLocation: McLean - VADuration: Full Time JobJob Description:Experience in SalesForce (SFDC) CRM with end to end implementation experience.SalesForce.com...SeniorFull timeImmediate startFlexible hours
- ...motivated candidate to join our talented Team. Job Title: Senior Salesforce Developer Location: Mclean, VA Overview: Looking for someone experienced with APEX, VisualForce, SOQL, Lightning application development, Lightning web components, Developer Console, Salesforce...Senior
- ...Senior Application Developer A Place Unlike Any Other, Home Away From Home… Monuments and memorials, eclectic neighborhoods, true local flavor – Washington, DC is a place unlike any other. It's your home away from home with free museums and America's front yard....SeniorLocal area
- ...delivery of an entire piece of a system or application, and serve as a technical lead on medium... ....Work closely with other engineers to develop the best technical design and approach... ...metrics.Operate as a software leader and as a senior level individual contributor....SeniorWorldwide
$116.35k - $210.33k
Leidos is seeking a Sr. Maximo Application Suite 9 (MAS 9) Developer/Administrator to join an established team supporting a cloud hosted enterprise MAS 9 implementation for multiple programs supporting DHS and TSA. In this role, you’ll work collaboratively to maintain and...SeniorFull timeRemote workShift workAfternoon shift- Senior Manager, Application Developer - Full Stack Application Development Senior ManagerThe LHX Transformation team is seeking a Full-Stack Application Development Sr. Manager to lead the design, development, delivery, and operational support of enterprise applications...Senior
$80.5k - $123k
Worker TypeRegularJob DescriptionSummaryAV seeks a Senior Salesforce Developer to lead enterprise Salesforce architecture, integrations, forecasting... ...data models, and process flows across Sales and Service applications. Forecasting and pipeline management: Translate...SeniorPermanent employmentFull timeContract workWork experience placementWork at office$130k - $216k
...Public TrustWhat You Will Do:We are seeking a Power Platform Developer and an Innovation Specialist to support a modernization effort... ...regulation.Guidehouse will consider for employment qualified applicants with criminal histories in a manner consistent with the requirements...SeniorFull timeWork at officeLocal areaFlexible hours- ...then consider a career in Advisory.KPMG is currently seeking a Senior Specialist to join our Federal Advisory practice.Responsibilities... ...offered salary is determined based on relevant factors such as applicant's skills, job responsibilities, prior relevant experience,...SeniorLocal area
- ...Security department is seeking highly motivated engineers to develop and secure next-generation embedded systems supporting missions... ...equivalent combination of related education and work experience. Applicants selected for this position will be subject to a US government...SeniorWork experience placementInternshipLocal areaImmediate start3 days per week
$116.2k - $229.1k
...ends on 11/1/2026. Work you'll do As a Senior Consultant on the Moveworks team, you will... ...& Technology Offering is dedicated to developing leading global HR strategies and implementing... ..., including hands-on work with application programming interfaces (APIs), Representational...SeniorLocal areaVisa sponsorship$140k - $160k
...secure software to meet customer demands.ResponsibilitiesDesign, develop, test & deploy CheckVideo's embedded softwareDevelop in a... ...bonus, commission, equity, or other incentive compensation, where applicable. Actual offers are determined individually based on the...SeniorWork at officeRemote work$111.8k - $221.8k
...ServiceNow Senior Developer At Accenture Federal Services, nothing matters more than helping the US federal government make the nation... ...solutions across ITSM, ITOM, ITBM, IRM, SecOps, and custom applications. Provides technical leadership on platform architecture, integration...Senior$122.9k - $204.9k
...Infrastructure - Technology Consulting - Digital Engineering - Application Modernization Senior EngineerFrom strategy to execution, the Government &... ..., replatform, refactor, rearchitect, replace or retire).Develop target-state direction, effort and complexity estimates,...SeniorSummer holidayLocal areaImmediate startFlexible hours- ...motivated candidate to join our talented Team. Job Title: Senior Salesforce Developer Location: Mclean, VA Overview: Looking for... ...experienced with APEX, VisualForce, SOQL, Lightning application development, Lightning web components, Developer Console,...Senior
- ...Credit Union currently does not provide sponsorship for this role. Applicants must be authorized to work in the United States without the... ...data mapping and related integration activities. Analyze, develop, and test COBOL and CICS programs. Design, code, test,...SeniorInternshipMonday to Friday
$120k - $160k
..._SITE Description SAIC is seeking a Senior Power Platform Developer with an active Secret clearance to provide advanced technical... ...to design and maintain custom workflows, custom applications, and enterprise-grade process automation solutions. Additional...SeniorFull timeTemporary workWork at officeRemote workShift work$130k - $216k
...Trust What You Will Do: We are seeking a Power Platform Developer and an Innovation Specialist to support a modernization effort... ...Azure infrastructure or architecture knowledge Application Lifecycle Management (ALM) and environment management Azure...SeniorTemporary workLocal areaFlexible hours
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