Senior Software Developer (Python and R)

Harmonia Holdings Group, LLC has been on the Inc. 5000 list of fastest growing companies in the United States for the past 10 years and was selected in 2019 as a Virginia Chamber of Commerce Fantastic 50 company.  Every bit of our success is the result of a team of incredibly talented, dedicated, and hard-working professionals who are the heart and soul of Harmonia!

We have an exciting opportunity for a Senior HPC Software Developer to join our team. To perform this job successfully, an individual must possess the knowledge, skills, and abilities listed; meet the education and work experience required; and must be able to perform each essential duty and responsibility satisfactorily. Other duties, in addition to the below, may be assigned as necessary to meet business needs.

*This position is remote.

Job Description:

Serve as a Senior High Performance Computing (HPC) Software Developer on the HPC team at a Federal agency, providing expert technical services and support to a highly technical Research staff.  You will work in a challenging and team-oriented environment supporting the use of HPC clusters. You will apply fundamental knowledge of HPC systems and contribute to technical projects using creativity and imagination. The position supports the Research staff in leveraging HPC (Amazon Web Services Parallel Cluster and EMR) to run complex Python jobs utilizing large amounts of financial data.  Responsible for liaising with the Research staff, providing user training, and assistance.  

Key Tasks & Responsibilities:

• Specialized experience must include all the following:
  • Experience with Python;
  • Experience with R;
  • Experience with SparkR;
  • Experience with Presto;
  • Experience with PySpark
• Employ complex software engineering methods using industry standard software development practices and modern programming languages and operating systems.
• Develop a range of applications including scientific, graphical user interface, database, and visualization applications.
• Lead in the requirements definition, analysis, design, implementation, debugging, testing, and optimization of computer programs on HPC platforms.
• Design, implement, deploy, and maintain software systems using object-oriented analysis, design, and programming techniques.
• Lead in the fulfillment of technical projects and organizational objectives functioning as an effective team member and possible team leader on multi-disciplinary teams.
• Engage other developers and stakeholders frequently to share relevant knowledge, opinions, and recommendations.
• Manage multiple advanced parallel tasks and priorities of customers and stakeholders, ensuring deadlines are met, while leveraging team member’s skills.
• Provide solutions to complex problems that require in-depth analysis of tangible and intangible factors
• Experience with Amazon Web Services Parallel Cluster and EMR
• Experience with Resource Managers such as SLURM, YARN (Hadoop), Torque, Condor, PBS, Sun Grid Engine, or equivalent.
• Experience supporting statistical or research applications such as MATLAB, STATA, SAS, Mathematica, or similar.
• Experience solving challenging code and script design optimization problems.
• Experience with the following technologies:
  • Python, PyTest, PyCharm, Pandas, NumPy, SciPy, MatPlotLib, Seaborn, Spark, PySpark, Spark Streaming XGBoost, Anaconda, Jupyter, JSON, YML
  • Data Science, Machine Learning, Deep Learning, TensorFlow, Keras, Scikit-learn, PyTorch
  • Amazon Cloud: AWS SageMaker, AWS EMR, AWS Glue, RDS, DynamoDB, Redshift, Snowflake, Athena, Kinesis, Kinesis Data Firehose, Lambda, Glue, SNS, CloudWatch, EC2, VPC, ELB, Auto Scaling, S3, S3 Data Lake, Boto3, Kafka, HDFS, Hive, Hue, Vertica, Oozie, Airflow, Parquet, Avro
  • MySQL, Git, Maven, JSON, Jenkins, Agile development, Jira

Education & Experience:

• 10 or more years of IT experience
• 10 or more years of Data Science experience
• 5 or more years of Cloud (AWS) experience
• Master’s Degree in Engineering, Mathematics, Computational Science, or a related field, or the equivalent combination of education and related experience.
• Expert level experience developing software with either Python or R within Linux.
• Significant experience with source code control systems, such as Git.
• Expert level knowledge and significant experience developing HPC software including distributed memory computing with MPI.
• Expert level knowledge and significant experience designing, implementing, deploying, and maintaining software systems using object-oriented analysis, design, and programming techniques.
• Significant experience providing innovative approaches and applying new technologies to broadly defined tasks and projects.
• Knowledge of massively-parallel computing and one or more associated parallel programming interfaces, such as MPI, OpenMP, or CUDA.
• Proficient verbal and written communication skills needed to effectively collaborate in a team environment, present and explain technical information, document work, prepare and present successful proposals and high-quality research papers.

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