Software Engineer III

Markon•Fort Meade, MD

33d•$160,000 - $210,000

About The Position

Markon’s partner company is seeking an experienced Software Engineer III to design, develop, enhance, and deploy complex software systems in support of mission-critical programs. This role includes enhancing an existing Streamlit-based UI prototype and evolving it into a scalable interface, with future plans to extend availability beyond the corporate enterprise. The ideal candidate brings strong full-stack development expertise, experience working with large and diverse datasets, and the ability to lead technical efforts across teams.

Requirements

Active TS/SCI w/ Polygraph
Master’s degree in Computer Science or related field + 5 years of relevant experience or Bachelor’s degree in Computer Science or related field + 7 years of relevant experience
9 years of relevant Software Engineering experience
Strong Linux CLI experience and Unix shell scripting (Bash)
Recent hands-on development experience in Python and Java
Experience with Streamlit for building interactive web applications
Experience with front-end development using TypeScript, HTML, CSS
Experience with JavaScript frameworks (React, Angular, Vue)
Experience with Apache Spark or similar distributed processing engines
Experience using Jupyter Notebook
Experience with data wrangling tools (pandas, NumPy)
Experience working with multiple data formats (Parquet, JSON, CSV, XML)
Experience with Git source control
Experience working in Agile development environments

Nice To Haves

Experience with Apache Airflow (DAG design, scheduling, operators, sensors)
Experience with SQL databases (MySQL, MariaDB, PostgreSQL)
Familiarity with HPC job scheduling tools such as Slurm
Experience with Atlassian tools (Jira, Confluence)

Responsibilities

Software Engineering & Development
Analyze user requirements and derive software design and performance requirements
Design, develop, test, deploy, document, maintain, and enhance complex software systems
Enhance and expand an existing Streamlit-based UI prototype into a production-ready interface
Develop front-end applications using TypeScript, HTML, CSS, and modern JavaScript frameworks (React, Angular, Vue)
Develop backend services and analytics using Python and Java
Develop and implement algorithms to meet performance and functional standards
Integrate software into new or existing systems and operating environments
Modify existing software to improve performance or adapt to new hardware or environments
Develop relational and non-relational database applications
Work with event-driven and data-driven analytics systems
Support cloud-based solution development
Data & Analytics Support
Work with distributed big data processing engines such as Apache Spark
Use Jupyter Notebook for development and analysis
Perform data wrangling and preprocessing using tools such as pandas and NumPy
Work with structured, semi-structured, and unstructured data formats (Parquet, JSON, CSV, XML)
Apply data validation, anomaly detection, and data quality concepts
Develop data queries for existing and proposed databases
Systems & Technical Leadership
Debug and resolve software defects
Develop and execute test procedures
Perform Unix/Linux development and shell scripting
Utilize Git for source code management
Contribute to system design decisions including hardware/software trade-offs and software reuse (OSS/COTS/GOTS)
Provide technical leadership to development teams as appropriate
Recommend new technologies and process improvements
Ensure quality control of developed and modified software
Coordinate with system and hardware engineers to derive requirements and ensure integration