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Mainframe Application Modernization Architect
Deloitte US
Atlanta, GA · Austin, TX · Boston, MA · Charlotte, NC · Chicago, IL · Cincinnati, OH · Cleveland, OH · Columbus, OH · Costa Mesa, CA · Dallas, TX · Denver, CO · Detroit, MI · Hartford, CT · Houston, TX · Indianapolis, IN · Kansas City, MO · Las Vegas, NV · Los Angeles, CA · McLean, VA · Miami, FL · Minneapolis, MN · Morristown, NJ · Nashville, TN · NY · Philadelphia, PA · Pittsburgh, PA · Raleigh, NC · Richmond, VA · Sacramento, CA · San Diego, CA · San Francisco, CA · San Jose, CA · Seattle, WA · St. Louis, MO · Stamford, CT · Tampa, FL · Tempe, AZ
Mainframe Application Modernization Lead Software Engineer and Architect – AI & Engineering/EaaS
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Sr Databricks Data Engineer
Deloitte US
Atlanta, GA · Austin, TX · Boston, MA · Charlotte, NC · Chicago, IL · Cincinnati, OH · Cleveland, OH · Columbus, OH · Costa Mesa, CA · Dallas, TX · Denver, CO · Detroit, MI · Houston, TX · Indianapolis, IN · Kansas City, MO · Los Angeles, CA · McLean, VA · Miami, FL · Minneapolis, MN · Morristown, NJ · Nashville, TN · NY · Philadelphia, PA · Pittsburgh, PA · Rosslyn, VA · Sacramento, CA · San Diego, CA · San Francisco, CA · San Jose, CA · Seattle, WA · Stamford, CT · Tampa, FL · Tempe, AZ
…environments, and unlock value through innovation. As a Databricks Engineer in our AI & Data practice, you will design, build, and optimize cloud-based data engineering solutions that…
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Java Full Stack Developer-Software Engineer III
Deloitte US
San Francisco, CA · St. Louis, MO
…in a collaborative environment? As an experienced Software Engineer III- Sr. Java Full Stack Developer you will have the ability to share new ideas and collaborate on projects as a…
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- $7.25 USD / hour
Our businesses deliver a broad range of products and solutions to customers in every corner of the globe, serving the transportation, infrastructure, environment and consumer industry…
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- $7.25 USD / hour
…and helping implement smart building technologies, automation solutions, and digital monitoring systems. * Respond to emergency situations and equipment failures, implementing solutions to…
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Business Security Consultant (CNAPP)
EY
Frankfort, KY
Must possess excellent communication, presentation, and collaboration skills
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Software Engineer
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This job is an integral member of an agile software engineer team responsible for building complex scalable software applications across all digital channels to serve our customers. The…
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Senior Azure Virtual Desktop Engineer
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Frankfort, KY
- $79,000 to $90,000 USD / year
As a Senior Azure Virtual Desktop Engineer, you will make an impact by designing, deploying, automating, and optimizing Azure Virtual Desktop environments that support both pooled…
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Senior Engineer - Cloud (Sunnyvale, CA; US Remote)
CrowdStrike
Frankfort, KY
Must possess expertise/knowledge sufficient to adequately perform the duties of the job being offered
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Senior SIEM Engineer
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Frankfort, KY
- $70 to $80 USD / hour
The Senior SIEM Engineer will be responsible for designing, implementing, and optimizing Palo Alto Cortex XSIAM/XDR and Cribl solutions in a large-scale, multi-tenant 24x7 SOC environment,…
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OT Security Platform Engineer – Dragos
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We are seeking an experienced OT Security Platform Engineer / Technical Lead to own and operate the Dragos security monitoring platform across a global manufacturing environment. This is a…
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Remote Support Engineer - MR/CT
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Senior Software Engineer
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Frankfort, KY
Lead the design, development, and deployment of complex software solutions, ensuring scalability and maintainability.
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Senior DevOps Engineer
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Louisville, KY
The Senior DevOps Engineer will be a key investment towards improving overall DevOps maturity for AI/ML implementations. The Senior Engineer will further Humana IT's mission to fortify…
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Manager, IAM Engineering-IS Security, Days
Norton Healthcare
Louisville, KY
- $7.25 USD / hour
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AI Native Cloud and Platform Architect - Senior Manager
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Frankfort, KY · Louisville, KY
To qualify you must have
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Cloud Engineer and Site Reliability (SME) - Senior Manager
EY
Frankfort, KY · Louisville, KY
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AI Security Software Engineer
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Louisville, KY
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- $7.25 USD / hour
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What You Must Have
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What You Must Have
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Markon

Expert Software Engineer

Chantilly, VA, United States

$140,000 to $185,000 USD / year

Apply on careers-markon.icims.com About employer

Applications open in a new tab.

Job details

Pay: $140,000 to $185,000 USD / year
Apply by: Nov 11, 2027
Experience: Bachelor's degree and 11–15 years of relevant software development experience.
Posting language: English
Posted: Nov 11, 2026

Original job description

Description

Markon is seeking an experienced Expert Software Developer to support a mission-critical Intelligence Community customer in Chantilly, Virginia. This position will focus on modernizing legacy applications, developing scalable full stack solutions, and leveraging Amazon Web Services (AWS) to enhance enterprise capabilities supporting critical intelligence operations.

Responsibilities

Design, develop, maintain, and modernize legacy software applications to improve system functionality, maintainability, and performance.
Develop and maintain full stack applications using Java, Spring Boot, Angular, and TypeScript.
Design, implement, and integrate RESTful APIs using Spring Boot to support enterprise applications and data exchange.
Leverage Amazon Web Services (AWS) to develop, deploy, and maintain cloud-based applications and supporting infrastructure.
Develop custom scripts to automate application installation, configuration, and deployment within AWS EC2 instances.
Design and implement custom Extract, Transform, Load (ETL) methodologies to support data processing, transformation, and integration requirements.
Integrate and utilize Elasticsearch to support application search, indexing, and data retrieval capabilities.
Translate customer requirements and technical specifications into scalable, maintainable software solutions.
Develop and execute unit tests to validate application functionality, reliability, and performance.
Implement and maintain automated testing frameworks, including Selenium, to improve software quality and deployment readiness.
Participate in peer code reviews, applying established software engineering standards and development best practices.
Collaborate with internal and external engineering teams to troubleshoot complex technical challenges and deliver technically sound solutions.
Support software development activities within Agile and Scrum environments, including sprint planning, development, testing, and iterative delivery.
Utilize Confluence, Jira, Git, and Jenkins to support development workflows, documentation, version control, and continuous integration activities.
Develop and maintain technical documentation, including application designs, implementation procedures, and system configuration information.
Provide technical guidance and mentorship to junior software developers, promoting software engineering best practices and knowledge sharing.
Independently evaluate technical challenges, recommend solutions, and contribute to architectural and design decisions.
Communicate technical concepts, project progress, and engineering recommendations effectively to technical and nontechnical stakeholders.

Qualifications

Required:

An active TS/SCI security clearance with Full Scope Polygraph (FSP) is required to be considered.
Bachelor's degree and 11–15 years of relevant software development experience.
Strong full stack development experience using Java, Spring Boot, Angular, and TypeScript, including RESTful API development.
Experience developing and deploying applications within Amazon Web Services (AWS), including EC2 configuration and custom deployment scripting.
Experience designing and implementing ETL processes and integrating applications with Elasticsearch.
Proficiency working in Red Hat Enterprise Linux (RHEL) command-line environments.
Experience with Agile/Scrum methodologies, unit testing, peer code reviews, and automated testing tools such as Selenium.
Working knowledge of Confluence, Jira, Git, and Jenkins.
Strong analytical, communication, and documentation skills, with the ability to translate customer requirements into effective technical solutions.

Desired:

Experience modernizing legacy applications and migrating capabilities to cloud environments.
Experience supporting Intelligence Community or mission-critical government software development programs.
Familiarity with CI/CD automation, secure software development practices, and AWS architecture.
Experience mentoring junior developers and contributing to technical design and architecture decisions.

Salary Range USD $140,000.00 - USD $185,000.00 /Yr.The Markon pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Overview

Eager to join a team where your skills are valued, your growth is nurtured, and your impact is profound? Look no further than Markon, a premier consulting firm deeply dedicated to advancing our nation's most critical missions.

At Markon, we don't just offer jobs – we offer opportunities for personal and professional transformation. Empowering our employees to lead, innovate, and excel, we foster an environment where new ideas are not just welcomed but celebrated. As a perennial Washington Post Top Workplace, we prioritize the well-being and success of our team members, ensuring they can bring their best selves to work.

Headquartered in Falls Church, Virginia, Markon has garnered national recognition for our unwavering dedication to excellence in serving the intelligence community, as well as federal civilian and defense agencies. Our growing reach extends across 17 states, 116 countries, and 5 continents, where our team of dynamic professionals collaborates to deliver unparalleled program and project management services.

Markon values people and the tremendous impact each individual can make – which is why we’re consistently recognized as one of the best places to work in federal government consulting. Here, you can help solve the nation’s most important challenges, surrounded by colleagues who help you grow, advance, and succeed. We are deeply dedicated to what matters – bringing out the best in each other to advance our clients’ missions.Join us and make a meaningful impact.

Markon is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, national origin, age, protected veteran status, or disability status. This job posting will remain open until the position is filled.

Benefits Offered: Medical, Dental, Vision, Life Insurance, Short-Term Disability, Long-Term Disability, 401(k) match, Flexible Spending Accounts, EAP, Training and Tuition Assistance, Paid Time Off, and Holidays

Apply on careers-markon.icims.com About employer

More about this job

Skills

AWS
Oracle Java
Spring Boot
TypeScript
API development
Data engineering
Process data
Elasticsearch
Test automation
Selenium
Troubleshoot
Software development
Agile
Scrum
Atlassian Confluence
Jira
Git
Jenkins
Documentation
CI/CD
Full-stack development
RESTful API
Red Hat Enterprise Linux
Unit testing
Communication skills
Coaching

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Work requirements

Jobs in the United States