Jobs in the United States

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Added 5 days ago
Software Systems Engineer Principal
Syms Strategic Group, LLC (SSG)
Raleigh, NC
Security Clearance Requirements Must possess or qualify for a Public Trust (MBI)
Added 5 days ago
C
Sr. AWS Data Engineer (Java, Python & Generative AI)
Cognizant
Charlotte, NC
- $90,000 to $105,000 USD / year
As a Senior AWS Data Engineer , you will make an impact by designing and building scalable cloud-based data solutions, modern APIs, and Generative AI capabilities that drive business…
Added 5 days ago
EG
Senior Java Full-Stack Developer
Eliassen Group
Raleigh, NC
- $70 to $80 USD / hour
Our client is seeking a Senior Java Full-Stack Developer to design, build, and support scalable software solutions across the full application stack. This individual will work as part of a…
Added 5 days ago
Salesforce Developer & Administrator, Ads Services
Amazon Advertising LLC
Seattle, WA
The Ads Services Salesforce Team is looking for a smart, motivated, and hands-on Salesforce Developer & Administrator to own and operate our shared production Salesforce instance. This is a…
Added 5 days ago
UG
Senior Software Engineer
UnitedHealth Group
Eden Prairie, MN
- $91,700 to $163,700 USD / year
areas, a minimum of four days per week in the office are required
Added 5 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 5 days ago
Senior Cloud Software Developer/Architect
Koniag Government Services
Washington, DC
Koniag Data Solutions, LLC a Koniag Government Services company, is seeking a Senior Cloud Software Developer/Architect with a Secret Security clearance to support KDS and our government…
Added 5 days ago
Senior Software Engineer
Koniag Government Services
Washington, DC
The ideal candidate will work in an AWS cloud environment, utilizing cutting-edge technologies. The developer will collaborate with both government and contractor teams to support all…
Added 5 days ago
SailPoint Support Engineer (REMOTE)
Koniag Government Services
Scott Air Force Base, IL
Experience with SailPoint BeanShell/Java scripting for custom rule development and workflow configuration.
Added 5 days ago
C
Quality Engineer (AI & Test Automation)
Cognizant
Jefferson City, MO
- $65,000 USD / year
+ Design, develop, and maintain test automation frameworks using Java and Python. Write clean, efficient, and scalable automation scripts for new features to ensure robust test coverage…
Added 5 days ago
Data Integration Specialist
Caris MPI, Inc.
Irving, TX
Must possess ability to sit and/or stand for long periods of time · Must possess ability to perform repetitive motion
Added 5 days ago
Lead java engineer with aws
TransUnion LLC
Crum Lynne, PA
Added 5 days ago
EG
Senior Java Full-Stack Developer
Eliassen Group
Harrisburg, PA
- $70 to $80 USD / hour
Our client is seeking a Senior Java Full-Stack Developer to design, build, and support scalable software solutions across the full application stack. This individual will work as part of a…
Added 5 days ago
Fellow Software Engineer-Eng (Agentic AI Architecture & Engineering)
UKG
Jefferson City, MO
- Technical Proficiency: Expert-level skills in programming languages (e.g., Python, Java) and AI frameworks (e.g., TensorFlow, PyTorch). Strong understanding of cloud platforms (AWS,…
Added 5 days ago
Delivery Consultant , WWPS ProServe
Amazon Web Services, Inc.
Arlington, VA · Denver, CO · Herndon, VA
…Delivery Consultant to join our team at Amazon Web Services (AWS). In this role, you'll work closely with customers to design, implement, and manage AWS solutions that meet their technical…
Added 5 days ago
Software Development Engineer - III, AWS OpenSearch, New Initiative
Amazon Development Center U.S., Inc.
Santa Clara, CA
…want to have direct and immediate impact on a large number of AWS users? Do you want to be part of a fast-growing AWS service and work in a fast paced startup style…
Added 5 days ago
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Senior AI/ML Engineer
TEKsystems
New York, NY
- $119,800 to $179,800 USD / year
…ideal candidate should have proficiency in Amazon Web Service (AWS) and/or Google Cloud Platform (GCP) with a solid foundation in data engineering, Machine Learning and MLOps cloud-native…
Added 5 days ago
Principal Site Reliability Engineer
NVIDIA USA
CA
…of AI agents and skills to transform platform operations and developer productivity. Our SRE culture values intellectual curiosity, diversity of thought, collaboration, and learning through…
Added 5 days ago
Lead Java Developer
Experis USA
Albany, NY
The New York State Integrated Eligibility System (IES) Program is seeking a skilled and collaborative Java Developer to support the development of modernization of the New York State…
Added 5 days ago
ConvergeProsperity - Product Forward Deployed Engineer, Insurance Growth Suite (Manager) - Products & Platforms
Deloitte
Saint Louis, MO
+ Deep expertise in Java and Spring Boot, including building production-grade microservices
Added 5 days ago
ConvergeProsperity - Product Forward Deployed Engineer, Insurance Growth Suite (Manager) - Products & Platforms
Deloitte
Kansas City, MO
+ Deep expertise in Java and Spring Boot, including building production-grade microservices
Added 5 days ago
O
Senior Software Developer - Healthcare Analytics & AI
Oracle
Jefferson City, MO
- $89,200 to $209,500 USD / year
- Strong software engineering skills in Python/Java.
Added 5 days ago
QA Engineering Lead (Automation Testing)
St. George Tanaq Corporation
Jefferson City, MO
Candidates must reside in the United States
Added 5 days ago
Full Stack Cloud Developer
St. George Tanaq Corporation
Jefferson City, MO
Candidates must reside in the United States
Added 5 days ago
SAP IS-U ABAP Developer Consultant - Resources/Utilities
Accenture LLP Company
NY
If Associate's Degree, must have equivalent minimum 6-year work experience

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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Jobs in the United States