Systems Engineer C++

RAJNI BATHEJA

703-***-**** ************@*****.*** McLean, Virginia

TECHNICAL SKILLS:

• Programming Languages: Java, Python, TypeScript, JavaScript, Shell Scripting, Perl, Rust, C, C++, AngularJS (familiar)

• Frameworks & Tools: Node.js, Flask, Docker, Apache NiFi, Jupyter Notebook, Git, Pip, Maven, Gradle

• Databases: Oracle, Sybase, PostgreSQL, MongoDB

• Cloud & DevOps: Hands-on experience with AWS (Lambda, API Gateway, S3, CloudFormation, Fargate, EC2), and Azure Stack Hub for managing cloud resources. Experience with CI/CD pipelines using tools like Jenkins, GitLab CI/CD, and Docker to automate build, test, and deployment workflows

• Big Data Technologies: Hadoop, Hive, Sqoop

• API Development: RESTful Web Services, GraphQL, Postman

• Operating Systems: Experience with Linux, Solaris, and Windows for development and deployment WORK EXPERIENCE:

MITRE Corporation, McLean, VA; Apr. 2001 – Present Lead Software Systems Engineer: 2020 – Present

Medicare Fee-For-Service Requirement Modernization (2024 – 2025)

• Designed and implemented AWS Lambda functions to download, process, and store Medicare Coverage Database and Local Coverage Determination data in S3 buckets, extracting, transforming, and enriching data with metadata such as contractor details, revision histories, retire dates, and related documents

• Developed and executed comprehensive Jest tests to validate Lambda functions and ensure reliable data processing workflows. Generated structured JSON payloads for active determinations and automated their delivery to API endpoints, enabling downstream systems, including AI-driven solutions, to consume and process medical coverage data

• Deployed and configured Strapi using Docker to create a scalable content management system for centralized access to Medicare compliance requirements, ensuring streamlined content delivery Aviation Safety Information Analysis and Sharing (2022 – 2024)

• Contributed to a collaborative FAA program that enhances aviation safety by using data fusion techniques to identify risks, optimize airspace operations, and improve system reliability

• Assisted in deploying and maintaining Azure Stack Hub infrastructure, managing OEM and Microsoft updates to ensure system integrity and supportability

• Collaborated with Microsoft, Cisco, and other OEMs to troubleshoot update-related issues, reclaim storage capacity, and optimize resource utilization by reallocating object stores and removing unused virtual machines, enabling scalability and efficient resource creation FAA Air Traffic Systems – Joint En-Route Decision Support System (JEDI) (2002 – Present)

• Contributed to The Joint En-Route DSS Infrastructure (JEDI), a large and complex conflict detection and resolution system for en route air traffic control, supporting aircraft-to-aircraft and airspace conflict detection, aircraft trajectory modeling, trial planning, and problem resolution to ensure safe and efficient airspace operations

• Designed and implemented subsystems, including Track Management, User Interface, Trajectory Modeler, and Conflict Manager, while collaborating with senior software engineers on prototyping initiatives for en route air traffic control systems, including database design and management for flight operations

• Modernized the system into a Docker-based microservices platform, enabling scalable deployment, real-time conflict detection, and post-processing of collected data in MongoDB for further analysis and optimization SECURITY CLEARANCE

• DOD Top Secret

• DHS CISA CSD & DHS

S&T - EOD Granted Top

Secret Fitness

• FAA & IRS - Final Moderate

(MBI)

PROFESSIONAL SUMMARY:

• Lead Engineer with 25+ years of experience in full software development life cycle spanning multiple domains including Aviation, Healthcare & Cybersecurity

• Proven leadership in delivering innovative solutions for various mission-critical systems, ensuring high reliability and performance

• Expertise in Object-Oriented Programming (OOP) principles applied across multiple programming languages, including Java and Python

• Skilled in leveraging Agile and DevOps methodologies to streamline development processes and optimize system delivery Federal Incident Reporting (FIRR) (2024)

• Developed Rust libraries and APIs using STIX standards to enhance structured threat data sharing for CISA

• Enabled secure communication across federal agencies by implementing structured threat intelligence exchange Sr. Software Systems Engineer: 2005-2020

FAA Time-Based Flow Management Migration & Integration (2007 – 2023)

• Time-Based Flow Management (TBFM) is a decision support tool for en route and terminal air traffic control that schedules aircraft at constraint points (e.g., meter fixes) based on time, optimizing traffic flow and improving airspace and airport capacity

• Developed and automated data pipelines using Java, shell scripting, and Jupyter Notebook to download, convert, and store data in Oracle databases, enhancing data analytics capabilities and operational efficiency

• Migrated enterprise data from Oracle to PostgreSQL to support the FAA’s Time-Based Flow Management (TBFM) Performance Summary Dashboard (TPSD) and Tableau analytics DOJ Cyber Threat Actor Platform (2019 – 2020)

• Developed backend services using GraphQL, Node.js, and Python for threat intelligence exchange

• Generated synthetic data using Faker to support testing and simulation environments Army Mission Command (PMMC) (2019 – 2020)

• Developed a Chat Alert application to reduce cognitive overload for soldiers by monitoring multiple chat rooms in the Army’s Command Post Computing Environment (CPCE), generating alerts for subscribed topics and keywords to improve situational awareness

• Evaluated machine learning models, including a Random Forest Topic Classification Model, and implemented real-time topic prediction using Python, Flask, and AngularJS to optimize performance and reduce communication errors in tactical environments

Voice Data Analysis Capability (2006 – 2008)

• Evaluated and benchmarked automated speech recognition (ASR) tools using edit-distance algorithms

(Levenshtein and Damerau-Levenshtein) and compared results against human transcription to enhance voice data analysis and improve transcription accuracy and reliability Software Systems Engineer: 2001-2005

FAA Data Integration & Infrastructure (2004 – 2023)

• Built automated ETL workflows to acquire, integrate, and process FAA datasets (e.g., NTML, Advisory, diversion data) from FTP sites using NiFi, Python, Jenkins, and Unix shell scripting, storing data in Oracle and PostgreSQL databases. Designed architecture for secure data transfer to the FAA network, added sponsor-requested features, developed quality check tools to ensure data integrity, and implemented web interface improvements to enhance reporting capabilities and system reliability Full life-cycle Sybase to Oracle Migration (2001 – 2003)

• Built the framework and software to transition the Daily Use User Request Evaluation Tool from SYBASE to Oracle, including creating Oracle databases, tables, indexes, and views, while optimizing data structures to streamline database operations and ensure seamless migration to support system functionality Sr. Programmer / Analyst, Cable & Wireless: 1999 – 2001 Programmer/Analyst, American Management Systems, Inc.: 1997 – 1999 Programmer-Analyst II, CACI, Inc. - Federal, Fairfax, VA: 1995 – 1997 ACHIEVEMENTS

• Spark Award (2016, 2017, 2023, 2024) and Synergist Award (2024)

• ARCHIE Award (2018) – Federal Railways Administration

• Director’s Award (2012) – EnRoute Automation Modernization Tracker Analysis

• PRA Award (2013) – ERAM Tracker

• KM Award (2015) – Enhancing Airspace Workflow Management Mentorship & Community Engagement

Capstone Mentor/SME, George Mason University, 2021: Mentored senior students on technical capstone projects by offering domain expertise, conducting code reviews, and providing career-focused guidance to enhance project quality and prepare them for job opportunities

EDUCATION:

• M.S. Computer Science, Bowie State University, Bowie, MD

• M.S. in Economics, Punjab University, Chandigarh, India

• B.S. in Mathematics, Punjab University, Chandigarh, India

• B.S. in Education, G.N.D University of Amritsar, India

Contact this candidate