Jobs in the United States

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Added 11 days ago
Senior .NET Core / Azure Developer
ITProFound Inc
Grand Rapids, MI
Must have valid work authorization
Added 11 days ago
A
Software Test Engineer
Actalent
Huntsville, AL
- $49.95 to $93.47 USD / hour
…maintenance of robust test infrastructures and frameworks, integration testing, informal manual testing, formal software qualification testing, and fielding and support of software…
Added 11 days ago
Solution Architect (FDE)
DynatraceLLC
Dallas
At least 7+ years of prior development experience in at least one object-oriented language. Solid understanding of byte-code based runtimes, i.e. Java, .NET
Added 11 days ago
US LBM Lead Software Engineer – Application Development (Pricing)
US LBM Service Co
Remote, United States
Establish reusable engineering patterns, APIs, integration standards, and CI/CD practices across pricing platforms.
Added 11 days ago
Principal AI Engineer
Hearst
Dallas, TX
Our primary stack is .NET and Azure, with Azure DevOps, Kubernetes, Azure AI Foundry and MCP-based tooling, alongside other languages and frameworks. The agent platform must work across all…
Added 11 days ago
Manager, Software Engineering (Sales Technology)
Remote, United States
…application ecosystem. This role requires strong expertise in C#/.NET development, data engineering, systems integration, and AI-assisted software development. In this role, you will…
Added 11 days ago
Software Developer SME (Containerized Applications Specialist) – TS/SCI
Xcelerate Solutions
Remote, United States
Provide technical guidance and recommendations to development teams on .NET programming, PL/SQL development, application integration, and software engineering best practices.
Added 11 days ago
T
Infrastructure Architect
TEKsystems
Jersey City, NJ
- $85 to $140 USD / hour
…subsystems, and automation tooling maintaining and extending a custom .NET-based workload management platform as needed. You will provide stewardship to other engineers through technical…
Added 11 days ago
Lead Developer
RBC Capital Markets LLC
Jersey City, NJ
Telecommuting permitted up to 1 day per week · Must have 5 years of experience in:
Added 11 days ago
Senior Software Engineer (.NET)
Evry Health
Remote, United States
Candidates must reside in the Eastern or Central time zones · Must live in a location that receives an existing high-speed internet connection/service.
Added 11 days ago
Lead Software Developer (Data Science)
Open Text Inc.
Lexington, KY
We are looking for a Lead Software Developer specializing in Data Science to join the OpenText Communications Product Development organization. In this role, you will provide hands-on…
Added 11 days ago
Java/.net Modernization Engineer
Koniag Government Services
Washington, DC
Tuknik Government Services, LLC, a Koniag Government Services company , is seeking a Java/.net Modernization Engineer with a Secret security clearance to support TGS in supporting our…
Added 11 days ago
AL
Mobile/Web Developer (.Net)
Air Line Pilots Association, Int'l.
Tysons (McLean), VA
- $97,948 to $139,923 USD / year
Must possess exceptional time management skills; be able to work in a fast-paced, multi-tasking environment; and, transition easily between projects
Added 11 days ago
Software engineer
Fidelity Technologies Corp.
Reading, PA
…the design and implementation of software solutions, software integration of COTS software packages and support of the organization's software maintenance activities. The Software Engineer…
Added 11 days ago
Mobile/TAK Developer
Accenture Federal Services
Washington, DC
Accenture Federal Services is seeking a Mobile/TAK (Tactical Awareness Kit) Developer to work in a constantly evolving environment where new technologies are used frequently and learning…
Added 11 days ago
Sr. Full Stack .NET Developer with AI - Onsite, In Person Interview
MSys Inc.
Harrisburg, PA
Mode of Interview :- In Person Interview Long term contract Onsite (5Days per Week Onsite ) at Harrisburg,PA
Added 11 days ago
Full-Stack Software Development Intern
Carnegie Mellon University
Pittsburgh, PA
Full-stack web application development (C#/.NET and Angular)
Added 11 days ago
SFP Developer
Virginia Community Colleges
VA
The Full Stack Developer is responsible for the design, development, maintenance, and support of custom enterprise applications, integrations, and business process automation solutions.…
Added 11 days ago
Associate Software Engineer
Urban Science Applications, Inc.
Detroit, MI
…technologies along with some core foundational technologies such as .NET, SQL Server and Angular. Successful candidates will possess a passion for technology, seeking out and learning the…
Added 11 days ago
GIS Development & Data Analyst
Dominion Energy
RICHMOND, VA
…attribution data, Creates GIS tools, products, and software integration to meet a variety of business client needs, Trains users and programmers to ensure maintenance, usage and application…
Added 11 days ago
AT
Azure Senior AppDev Engineer
Ascend Technologies
Remote, United States
- $140,000 USD / year
Design and implement .NET 8+ features and services aligned to program architecture standards.
Added 11 days ago
Solution Architect - Senior
Cummins Talent Acquisition
Remote, United States
…knowledge of modern architectural patterns, cloud platforms and integration…
Added 11 days ago
S
Software Developer | Power BI and Power Automate
SWMG
Fort Worth, TX
- $85,000 to $125,000 USD / year
We are seeking a skilled Power BI Developer to develop and optimize business applications, automate workflows, and build reporting solutions that improve advisor productivity and…
Added 11 days ago
Senior Database Developer (3292 RBC)
INSPYR Solutions
Davenport, IA
We are seeking an experienced Senior Database Developer for a temporary engagement supporting a critical legacy system modernization initiative. This role will focus on analyzing existing…
Added 11 days ago
Tester (Remote)
GovCIO
Madison, WI
Must reside and work within the Continental United States (CONUS)

Koniag Government Services

Java/.net Modernization Engineer

Washington, DC, United States

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Job details

Posting language: English
Posted: Oct 29, 2026

Original job description

Tuknik Government Services, LLC, a Koniag Government Services company , is seeking a Java/.net Modernization Engineer with a Secret security clearance to support TGS in supporting our government customer in the DC Metro area. This position is for a Future New Business Opportunity.

Benefits include medical, dental, and vision insurance, 401(k) retirement plan, paid time off, paid parental leave, life and disability insurance, flexible spending accounts, commuter benefits and tuition reimbursement.

Tuknik Government Services, LLC, Koniag Government Services (KGS) is seeking qualified candidates for this role supporting our U.S. Army customer on a large-scale Army contracting systems modernization and automation program. Analyzes and decouples legacy Java and .NET components supporting solution integrations. The engineer preserves required behavior and interfaces while helping the team retain, wrap, refactor, replace, or retire each component through controlled migration waves. This is a contingent recruiting profile; the opening, employing subsidiary, compensation, work location, and staffing remain subject to final contract authorization.

Essential Functions, Responsibilities & Duties may include, but are not limited to:

Inventory legacy Java and .NET applications, services, libraries, jobs, interfaces, dependencies, configurations, and operational procedures.
Trace business rules, calculations, transformations, data access, authentication, error handling, and external dependencies in legacy code.
Recommend retain, wrap, refactor, replace, or retire dispositions based on mission need, security, supportability, performance, and lifecycle cost.
Develop API facades and compatibility adapters that preserve external contracts while target Appian capabilities transition.
Refactor approved services into modular, testable components or bounded external services where Appian-native implementation is not appropriate.
Eliminate unsupported libraries, embedded credentials, obsolete protocols, and high-risk custom code through approved designs.
Create unit, integration, contract, regression, and security tests that compare modernized behavior with the legacy baseline.
Support data migration, parallel operation, deployment, cutover, rollback, stabilization, and legacy retirement.
Package code through the approved DevSecOps pipeline and resolve code-quality, dependency, vulnerability, and licensing findings.
Maintain technical designs, interface specifications, dependency maps, release notes, and operational documentation.

Education and Experience Required:

Bachelor's degree in computer science, engineering, information systems, or a related field; additional relevant experience may substitute for education.
Five or more years of enterprise software engineering experience using Java, .NET/C#, or both.
Experience modernizing legacy applications, decomposing tightly coupled services, and preserving APIs, business rules, and data behavior.
Experience with relational databases, REST/SOAP services, secure coding, automated testing, CI/CD, and production troubleshooting.
U.S. citizenship and the active security clearance or eligibility required for the assigned work by the start of performance, with ongoing eligibility thereafter.
Ability to communicate clearly with Government, technical, and business stakeholders and to maintain accurate work records in approved systems.
Ability to protect Controlled Unclassified Information and classified information, when assigned, and comply with required access, training, and handling procedures.

Education and Experience Desired:

Experience integrating conventional code with Appian or another low-code platform.
Experience with Spring, ASP.NET, containers, AWS, Oracle, S3, or enterprise document and reporting systems.
Experience modernizing Federal acquisition, financial, or other regulated applications.

Required Skills and Competencies:

Java and .NET enterprise development
Legacy analysis and incremental refactoring
API facades and compatibility engineering
Automated testing and secure DevSecOps
Migration, cutover, and production support

Work Environment and Travel:

Work may occur remotely when authorized, at Government facilities, or in controlled office and data-center environments. Work involving classified information or SIPRNet will be performed at a Government-approved secure location using authorized systems. The role generally supports Government business hours, with occasional release, incident-response, maintenance-window, or approved travel requirements. Reasonable accommodations may be made to enable qualified individuals with disabilities to perform the essential functions.

Our Equal Employment Opportunity Policy

The company is an equal opportunity employer. The company shall not discriminate against any employee or applicant because of race, color, religion, creed, ethnicity, sex, sexual orientation, gender or gender identity (except where gender is a bona fide occupational qualification), national origin or ancestry, age, disability, citizenship, military/veteran status, marital status, genetic information or any other characteristic protected by applicable federal, state, or local law. We are committed to equal employment opportunity in all decisions related to employment, promotion, wages, benefits, and all other privileges, terms, and conditions of employment.

The company is dedicated to seeking all qualified applicants. If you require an accommodation to navigate or apply for a position on our website, please get in touch with Heaven Wood via e-mail at accommodations@koniag-gs.com or by calling 703-488-9377 to request accommodations.

Koniag Government Services (KGS) is an Alaska Native Owned corporation supporting the values and traditions of our native communities through an agile employee and corporate culture that delivers Enterprise Solutions, Professional Services and Operational Management to Federal Government Agencies. As a wholly owned subsidiary of Koniag, we apply our proven commercial solutions to a deep knowledge of Defense and Civilian missions to provide forward leaning technical, professional, and operational solutions. KGS enables successful mission outcomes for our customers through solution-oriented business partnerships and a commitment to exceptional service delivery. We ensure long-term success with a continuous improvement approach while balancing the collective interests of our customers, employees, and native communities. For more information, please visit www.koniag-gs.com.

Equal Opportunity Employer/Veterans/Disabled. Shareholder Preference in accordance with Public Law 88-352

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More about this job

Skills

Oracle Java
.NET
Documentation
Computer science
C#
Test automation
CI/CD
Troubleshooting
Microsoft ASP.NET
AWS
Oracle
Reporting
Secure premises
Incident response

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Work requirements

Jobs in the United States