1,454,064open jobs
88,769companies
224,388added this week
Browse all
Salary
$195k – $220k per year
Location
In office (Annapolis Junction)
Seniority
Senior · 15+ years exp

Confirmed on the employer's own hiring board on Oct 11, 2026. First seen by Alion on Oct 1, 2026.

Overview
Company
Impact
Profile match
Markon Solutions is a government services contractor headquartered in Falls Church, Virginia, supporting the intelligence community, defense agencies and federal civilian customers with cyber, digital transformation, engineering and facilities management work. A repeated Washington Post Top Workplace, it staffs programs at Fort Meade, Annapolis Junction, Chantilly, McLean and Herndon, and supports naval nuclear work in West Mifflin and Niskayuna. Hiring covers software developers, systems and network engineers, data scientists, target analysts, civil, structural and electrical engineers, facility managers, space auditors and accountants.

Description

PLEX Solutions, LLC, Part of Markon, is looking for a Sr. Software Developer to support a customer in the Annapolis Junction, MD area. In this role, you will lead complex software engineering efforts, apply advanced technical principles, and contribute innovative solutions that support critical hardware and technical service products.

Responsibilities

  • Develop, create, and modify general computer applications software or specialized utility programs.
  • Analyze user needs and develop software solutions.
  • Design software or customize software for client use with the aim of optimizing operational efficiency.
  • May analyze and design databases within an application area, working individually or coordinating database development as part of a team.
  • May supervise computer programmers.
  • Inspects, cleans, transforms, and models data to highlight useful information, suggest conclusions, and support decision making.
  • Develops software planning documentation, requirements and design documentation, support documentation, test description documentation.
  • Conducts software validation and verification, and software engineering anomaly resolution.
  • Performs tasks in accordance with applicable DoD guidance and industry standards.
  • Performs installation, demonstration, test, validation and evaluation of software tools, methods, and measurement technologies.
  • Performs computer network exploitation development.
  • Evaluates the quality of software systems and solutions.
  • Performs needs and risk analysis of software packages relative to mission requirements.
  • Develops, updates, and evaluates software engineering standards, specifications, handbooks, or manuals for the development and testing of cyber capabilities.
  • Documents verification and validation of solutions and protocols, and provides technical assistance to user organizations on software acquisition.
  • Develops life cycle models and customizes software analytical tools, models, decision aids, screening methods, and techniques used to evaluate and support the authenticity and continuity of information systems.
  • Develops specialized software/firmware modules.
  • Disassembles and analyzes software and embedded firmware.
  • Collaborates with Cyber Innovation Unit.
  • Develops, creates, and modifies general computer applications software or specialized utility programs.

Qualifications

  • Active TS/SCI W/ Polygraph
  • 15+ years of related professional experience in a technical engineering discipline
  • Bachelor's degree in Computer Science, Computer Engineering, or related technical field
  • Proven ability to lead a project team
  • Strong command of advanced engineering principles and software development theories
  • Excellent written and oral communication skills
  • Ability to troubleshoot production issues under pressure and tight deadlines
  • Proficiency developing software in one or more operating environments (Windows, Linux, etc.)
  • Proficiency with Microsoft Office applications
  • Excellent time management and organizational abilities

    ·

    Preferred Qualifications:

  • Master’s degree preferred

Salary Range

USD $195,000.00 - USD $220,000.00 /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.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
1,454,064 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Backend
Similar stack
Same company
Annapolis Junction
≈ $123k – $225k per year (Estimated) • In office • Full-Time • 8+ years exp • Detroit
JavaScript
Java
TypeScript
Java
Spring Boot
Quarkus
Databases
Redis
ClickHouse
Apache Kafka
AI/ML
Time Series Forecasting
Frontend
RxJS
Angular
DevOps
GCP
Azure
AWS
Kubernetes
Management
Agile
Apply
$125k – $167k per year • In office • Full-Time • 3+ years exp • Bachelor's Degree • New York
JavaScript
Java
Java
Spring Boot
Databases
Redis
Apache Kafka
Frontend
Vue.js
React.js
Mobile
Dependency Injection
DevOps
CI/CD
AWS
Docker
Kubernetes
Amazon S3
Management
Agile
Apply
$200k – $280k per year • Remote (United States) • Full-Time • 4+ years exp • Boston • New York
JavaScript
TypeScript
SQL
Node JS
Databases
PostgreSQL
Snowflake
Apache Kafka
OpenSearch
AI/ML
dbt
AI Agents
Frontend
GraphQL
pnpm
DevOps
Datadog
CI/CD
GitOps
Jenkins
AWS
Kubernetes
Grafana
AWS Step Functions
API Gateway
Cybersecurity
Keycloak
Okta
Management
Confluence
Apply
≈ $161k – $294k per year (Estimated) • In office • 5+ years exp • Bachelor's Degree • Hershey
Python
Databases
Databricks
Apache Kafka
AI/ML
Machine Learning
Analytics
ETL/ELT
IoT
MQTT
Apply
$101k – $204k per year • Remote (United States) • 7+ years exp • Bachelor's Degree • United States
Python
JavaScript
Java
C++
Java
Apache Camel
Databases
Apache Kafka
AI/ML
AI Agents
NLP
RAG
Human-in-the-Loop
DevOps
Rest API
gRPC
GCP
Azure
AWS
Docker
Kubernetes
Analytics
Apache NiFi
Apply
$98k – $176k per year • Hybrid • Full-Time • 3+ years exp • Brooklyn Park
Python
Rust
C#
AI/ML
Red Teaming
DevOps
Linux
Windows
Apply
≈ $32k – $58k per year (Estimated) • In office • Internship • Bachelor's Degree • Brenham
Management
Outlook
Microsoft Office
Apply
≈ $32k – $69k per year (Estimated) • In office • Part-Time • Bachelor's Degree • Garner
Management
Microsoft Office
Apply
≈ $53k – $125k per year (Estimated) • In office • Part-Time • Bachelor's Degree • Mebane
Management
Microsoft Office
Apply
$52k – $84k per year • Equity • In office • Part-Time • Bachelor's Degree • Hartford
Management
Microsoft Office
Apply
$180k – $220k per year • In office • TS/SCI • 2+ years exp • Associate's Degree • Chantilly
JavaScript
TypeScript
Node JS
Frontend
Vue.js
Angular
React.js
DevOps
VMWare
Azure
AWS
Docker
Kubernetes
MPLS
Management
Agile
Scrum
Apply
$140k – $180k per year • In office • 2+ years exp • Associate's Degree • Chantilly
JavaScript
TypeScript
Node JS
Frontend
Vue.js
Angular
React.js
DevOps
VMWare
Azure
AWS
Docker
Kubernetes
MPLS
Management
Agile
Apply
$150k – $180k per year • In office • TS/SCI • 5+ years exp • Bachelor's Degree • Chantilly
JavaScript
Java
TypeScript
C#
Java
Spring Boot
Frontend
Angular
DevOps
CI/CD
Jenkins
AWS
Docker
Kubernetes
GitHub
Management
Confluence
Agile
Scrum
Apply
$170k – $195k per year • In office • TS/SCI • 10+ years exp • Herndon
Python
JavaScript
Java
TypeScript
SQL
Node JS
Java
Hibernate
Databases
MySQL
PostgreSQL
Frontend
Angular
DevOps
Rest API
Jenkins
AWS
GitHub
GitLab
Management
Agile
Apply
Software Engineer 10 days ago
$200k – $230k per year • In office • TS/SCI • 14+ years exp • Bachelor's Degree • Fort Meade
Python
C++
DevOps
Linux
Apply
$135k – $216k per year • In office • TS/SCI • 5+ years exp • Bachelor's Degree • Annapolis Junction
JavaScript
Kotlin
TypeScript
AI/ML
AI Agents
Frontend
Redux
React.js
DevOps
Git
AWS
Kubernetes
Linux
Apply
$120k – $200k per year • In office • TS/SCI • 10+ years exp • Bachelor's Degree • Annapolis Junction
Python
Java
C++
DevOps
Windows
Apply
$154k – $278k per year • In office • TS/SCI • Full-Time • 14+ years exp • Bachelor's Degree • Annapolis Junction
JavaScript
Java
TypeScript
Java
Spring Boot
Databases
PostgreSQL
Oracle
MariaDB
Frontend
Angular
DevOps
OpenShift
Helm
Podman
Rancher
GitLab CI
CI/CD
AWS
Docker
Kubernetes
Amazon EKS
Management
Confluence
Jira
Agile
Apply
$154k – $278k per year • In office • TS/SCI • Full-Time • 8+ years exp • Bachelor's Degree • Annapolis Junction
C++
DevOps
Linux
Chips/EDA
Xilinx Vivado
Apply
≈ $147k – $299k per year (Estimated) • In office • TS/SCI • Bachelor's Degree • Annapolis Junction
Java
Java
Spring Boot
Databases
Apache Kafka
DevOps
Rancher
AWS
Kubernetes
Apply
See all jobs
This is one of many
1,454,064 more open roles from verified company boards, updated every day.