Senior Software Engineer Java/Python Big Data

NMK Global Inc . is a global IT Services & Solutions company specializing in IT Staffing, Technology Consulting, Workforce Solutions, and Application Development Services. We help organizations build high-performing technology teams by connecting them with exceptional talent across a wide range of industries. Our expertise, industry knowledge, and consultative approach enable clients to achieve successful business outcomes while helping professionals advance their careers.

Job Title: Senior Software Engineer Java/Python Big Data



Location: Rockville, MD

Primary Skills:
Java, Python, Node.js, Big Data, Apache Spark, AWS EMR, Presto, Trino, Athena, ETL/ELT, Data Pipelines, AWS Glue, Step Functions, Airflow, AWS, Microservices, REST APIs, PostgreSQL, MySQL, Aurora, DynamoDB, MongoDB, Cassandra, SQL, Data Lakes, Data Warehousing, Terraform, CloudFormation, CI/CD, Docker, Unit Testing, DevOps.

Required Skills:

• 8+ years of software engineering experience.
• Strong proficiency in Java and/or Python ; Node.js is a plus.
• Strong object-oriented development and RESTful API design.
• Strong experience with Microservices architecture.
• Hands-on experience with Big Data technologies , especially Apache Spark, EMR, Presto/Trino, and Athena.
• Experience designing and developing large-scale ETL/ELT pipelines.
• Experience with batch and streaming data processing.
• Strong knowledge of Data Lake/Data Warehouse patterns, partitioning, schema management, and Parquet/ORC/Avro formats.
• Strong SQL performance tuning experience.
• Experience with AWS Glue, Step Functions, and/or Airflow.
• Experience with relational databases: PostgreSQL, MySQL, Aurora.
• Experience with NoSQL databases: DynamoDB, MongoDB, Cassandra.
• Strong AWS experience with EC2, S3, Lambda, RDS, ECS, API Gateway, CloudWatch, CloudTrail, IAM, and VPC.
• Experience with Infrastructure as Code using Terraform or CloudFormation.
• Experience with CI/CD, test automation, unit testing, DevOps, and software security.
• Strong system design and performance optimization experience.

Nice to Have:

• Amazon QuickSight
• React / Angular
• GitLab CI/CD
• Amazon Q or other AI-assisted development tools

Key Responsibilities:

• Design, develop, and maintain applications that ingest and analyze multiple data sources.
• Build scalable Big Data processing and ETL/ELT solutions.
• Provide technical leadership and mentorship to junior engineers.
• Participate in architecture and technical strategy discussions.
• Identify and resolve technical risks and dependencies.
• Support production systems and troubleshoot complex technical issues.
• Optimize application performance, code, and infrastructure.
• Ensure code quality, security, testing, and adherence to development best practices.

Important Requirements:

• FINRA experience required.
• Candidates must be available for an onsite interview on October 6, 2026 .
• Candidates should be comfortable with the required onsite schedule in Rockville, MD .

NMK Global Inc. is an Equal Opportunity Employer. We are committed to creating an inclusive workplace and consider all qualified applicants without regard to age, race, color, religion, sex, national origin, disability, protected veteran status, sexual orientation, gender identity, or any other characteristic protected by applicable law.