Senior Software Engineer

Mark Opaskar

858-***-**** ***** Perkins Ct., Purcellville, VA 20132

****@******.***

Applications Programmer / Software Engineer

Software engineer with 29+ years of experience in the design, development, testing, and maintenance of complex applications across the full software development lifecycle. Strong proficiency in Java, Python, and related technologies, with proven success in systems analysis, requirements definition, detailed technical specifications, quality assurance, and technical leadership. Extensive background supporting government and enterprise systems in Agile environments.

Last Held Clearance: Top Secret/SCI with CI Polygraph

Core Qualifications

Languages: Java, Spring Boot, Python, Go, JavaScript/TypeScript, React, REST

Full SDLC: Requirements analysis, design, coding, testing/debugging, documentation, maintenance

Leadership & Collaboration: Technical lead, Test Lead, Scrum Master, mentorship, stakeholder engagement

Testing & Quality: JUnit, Mockito, Cucumber, performance testing, QA reviews

Databases & Integration: MongoDB, Oracle, MySQL, DynamoDB, Kafka, data integration

Methodologies: Agile (SAFe and pure), hybrid approaches, systems engineering practices

Tools: AWS, Kubernetes, Docker, Git, Jenkins, Confluence, JIRA, DOORS

Professional Experience

Capital One — Full Stack Engineer 9/2025 – 10/2026

Designed and implemented improvements to End-of-Day processing to support higher transaction volumes.

Rehosted database access and redrive service as Temporal activities.

Performed performance testing and bottleneck analysis under increased load.

Technologies: AWS, AWS CDK, Python, Go, TypeScript/JavaScript, Java

Barone Consulting – Emmet — Senior Software Engineer 8/2024 – 4/2025

Designed, developed, and enhanced Java microservices in an Agile environment to improve efficiency and scalability.

Deployed and maintained local MongoDB shards on Kubernetes with Kafka-driven updates.

Technologies: Java, Spring Boot, Kubernetes, Docker, Helm, Gradle, Kafka, Redis, MongoDB, JUnit, Mockito, SAFe Agile

ManTech – COMPS II — Systems Engineer 9/2021 – 4/2024

Analyzed and decomposed directives into testable requirements; maintained requirements and documentation in DOORS and Confluence.

Maintained software version descriptions and interface control documents.

Tools: SAFe Agile, DOORS, Confluence, JIRA, SharePoint

Raytheon – Euphoria — Integration and Test Engineer / Systems Engineer 12/2019 – 9/2021

Designed and executed integration tests; developed Cucumber/Gherkin scenarios to automate testing.

Supported software design through UML interpretation and collaboration with systems engineering.

Technologies/Tools: Java, JavaScript, Cucumber, JUnit, Kubernetes, Docker, Maven, Jenkins, UML, SAFe Agile

BAE Systems — Software Developer / Test Lead / Scrum Master / IPT Lead 2002 – 2019

Designed, developed, tested, and maintained Java and C/C++ applications for mission systems, web applications, and data analytics platforms.

Served as Test Lead for data access and analytics web applications; architected geospatial data solutions using REST, Kafka, and web clients.

Created and maintained software development plans, design documents, and version descriptions.

Led technical teams as IPT Lead, Test Lead, and Scrum Master; provided technical guidance and oversight.

Technologies: Java, JavaScript, React, Node.js, AngularJS, REST, Kafka, AWS, J2EE, JUnit, Agile

Education

BA, Computer Science, University of Texas at Austin, 1995

BS, Aerospace Engineering, University of Texas at Austin, 1989

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