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Added 5 days ago
Platform Engineer (TS/SCI CI Poly)
Seamless Migration
Reston · Alexandria · Washington · Colorado Springs
Seamless Migration is seeking a career and customer-oriented Platform Engineer to join our team.
Added 5 days ago
Okta Identity Developer - Mid
Koniag Government Services
Washington, DC
The ideal candidate is a technically proficient and development-focused identity engineer with solid, hands-on experience developing custom Okta integrations, identity automation workflows,…
Added 5 days ago
Senior Software Engineer
Koniag Government Services
Washington, DC
Kadiak, LLC, a Koniag Government Services company, is seeking a Senior Software Engineer with a Top-Secret security clearance to support Kadiak and our government customer in Washington, DC.
Added 5 days ago
Senior Full-Stack Software Engineer
Koniag Government Services
Washington, DC
The Senior Full-Stack Software Engineer to support the development of the FBI FDP system using a Postgres/Java/React technology stack. These engineers will work with an existing development…
Added 5 days ago
SailPoint Support Engineer (REMOTE)
Koniag Government Services
Scott Air Force Base, IL
Koniag IT Systems, LLC, a Koniag Government Services company, is seeking a SailPoint Support Engineer with a Secret Security clearance to support KITS and our government customer. The…
Added 5 days ago
C
Quality Engineer (AI & Test Automation)
Cognizant
Jefferson City, MO
- $65,000 USD / year
…quality into every stage of the lifecycle, and as a Quality Engineer, you will be on the front lines of this…
Added 5 days ago
Lead java engineer with aws
TransUnion LLC
Crum Lynne, PA
Added 5 days ago
Summer 2027 Software Engineer enGen Undergraduate Intern
Highmark Health
Harrisburg, PA
The Summer 2027 Software Engineer Undergraduate Internship provides students with an opportunity to gain practical, hands-on software engineering experience supporting the development and…
Added 5 days ago
Principal Software Engineer, WiFi Motion
Comcast
Philadelphia, PA
Added 5 days ago
Fellow Software Engineer-Eng (Agentic AI Architecture & Engineering)
UKG
Jefferson City, MO
We are seeking a distinguished and customer-facing Fellow AI Engineer to define and lead UKG's enterprise-wide Agentic AI strategy across the full UKG Product Suite. This role extends…
Added 5 days ago
Software Development Engineer - III, AWS OpenSearch, New Initiative
Amazon Development Center U.S., Inc.
Santa Clara, CA
As a Software Development Engineer on the Amazon Open search Service team, you will:
Added 5 days ago
T
Senior AI/ML Engineer
TEKsystems
New York, NY
- $119,800 to $179,800 USD / year
…We are seeking a highly skilled and motivated Senior AI/ML Engineer with 57 years of experience in data engineering and at least 3 years in AI/ML engineering. The ideal candidate will have…
Added 5 days ago
Principal Site Reliability Engineer
NVIDIA USA
CA
Strong proficiency in one or more programming languages such as Python, Go, TypeScript, JavaScript, or Java, with experience building production-grade automation and platform software.
Added 5 days ago
ConvergeProsperity - Product Forward Deployed Engineer, Insurance Growth Suite (Manager) - Products & Platforms
Deloitte
Saint Louis, MO
We are looking for a highly skilled and client-facing Forward Deployed Engineer (FDE) to sit at the intersection of engineering excellence and customer partnership. In this role, you will…
Added 5 days ago
ConvergeProsperity - Product Forward Deployed Engineer, Insurance Growth Suite (Manager) - Products & Platforms
Deloitte
Kansas City, MO
We are looking for a highly skilled and client-facing Forward Deployed Engineer (FDE) to sit at the intersection of engineering excellence and customer partnership. In this role, you will…
Added 5 days ago
Cybersecurity Engineer - Remote
Dragonfly Health
Mesa, AZ
Hands-on experience with scripting and programming languages such as Python, PowerShell, Java, C++, Ruby, Node, or Go.
Added 5 days ago
U
Sr Software Engineer - Streaming Data Platform
Uber
Sunnyvale, CA · San Francisco, CA · Seattle, WA
- $202,000 to $224,000 USD / year
…foundational systems that operate at global scale. As a Sr Software Engineer on the Streaming Data Platform team, you will shape the architecture and evolution of the critical…
Added 5 days ago
Engineer III - Core HR Technology
Edward Jones
Saint Louis, MO
Louis, MO home office locations are expected to work in the office four days per week
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
System Engineer IV
Arcfield
Chantilly, VA
Must possess and be able to maintain a TS/SCI clearance with Polygraph
Added 5 days ago
Systems Engineer Technical Specialist
Arcfield
Chantilly, VA
Must possess and be able to maintain a TS/SCI clearance with Polygraph
Added 5 days ago
Software Engineer II - Lunar Permanence
Blue Origin LLC
Seattle, WA
We are seeking a Level 2 Software Engineer to join the Lunar Apps team in the Lunar Permanence business unit. Our team is responsible for developing innovative products that accelerate…
Added 5 days ago
Identity Operations Engineer
UMG Recordings Inc
Nashville, TN
As a key member of the UMG Operations Center, the Identity Operations Engineer operates and continuously improves UMG’s hybrid identity, access, authentication, privileged-access, and…
Added 5 days ago
Full-stack Engineer 4
Capital One
Plano, TX
…auto loan. Leveraging a modern full-stack ecosystem, you will engineer critical infrastructure-from reimagining core payment and ledger systems to developing compassionate platforms that…
Added 5 days ago
Data Engineer 5
Capital One
McLean, VA · Richmond, VA · NY · Wilmington, DE
At least 4 years of experience programming with at least one of the following languages: Python, Java, or Scala

Closed listing

Koniag Government Services

Java/.net Modernization Engineer

Washington, DC, United States

This opening has closed.

The original listing is kept below for reference.

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Posting language: English
Posted: Oct 29, 2026

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Original job description

Archived listing. The details below describe a past opening.

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