Mid-Level Software Engineer
Rockville, MD
Category: Development
Industry: Financial Services
Standard Hours: Open
Reference ID: JN -092026-108720
Date Posted: 09/21/2026
Shortcut: http://careers.eliassen.com/RlDR8g
Description:
Hybrid 2 days onsite / 3 days remote in Rockville, MD
Our client seeks a Mid-Level Software Engineer to design, build, and maintain applications that ingest multiple data sources and surface insights through correlation and analysis. The engineer will work across the software development life cycle, take ownership of moderately complex components, and contribute to architecture discussions while improving reliability, performance, and maintainability. The role includes participation in code reviews, production support, and informal guidance to junior engineers.
We can facilitate w2 and corp-to-corp consultants. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $60.00 to $70.00/hr. w2
Responsibilities:
- Design, develop, test, and maintain features and services that ingest multiple data sources and surface insights through correlation and analysis, delivering clean, maintainable, well-tested code.
- Own moderately complex components end to end from design through delivery and support with limited guidance.
- Participate in architecture and design discussions and contribute technical input to shape team solutions.
- Identify and resolve technical issues and dependencies, escalating broader risks appropriately.
- Support production systems, troubleshoot issues, and improve reliability, performance, and maintainability.
- Participate in code reviews, provide constructive feedback, and help apply and improve coding standards and best practices.
- Provide informal guidance to junior engineers and contribute to onboarding and knowledge sharing.
- Apply computer science fundamentals and growing Big Data experience to solve business problems.
- Use AI-assisted development tools with sound judgment for correctness, security, and quality.
- Build productive relationships, communicate progress and blockers proactively, and collaborate in support of investor protection and market integrity.
Experience Requirements:
- Proficiency in Java, Python, and/or Node.js with object-oriented development and RESTful API design. Familiarity with microservices.
- Experience with Big Data frameworks such as Apache Spark, EMR (Presto, Trino), and Athena.
- Experience building ETL/ELT pipelines for batch and preferably streaming processing.
- Understanding of data lake and warehouse patterns, file formats (Parquet, ORC, Avro), and SQL performance tuning.
- Exposure to workflow orchestration and scheduling tools such as AWS Glue, Step Functions, or Airflow, with attention to data quality and monitoring.
- Experience with relational databases (PostgreSQL, MySQL, Aurora) and working knowledge of NoSQL (DynamoDB, MongoDB, Cassandra).
- Experience with core AWS services (EC2, S3, Lambda, RDS, ECS, API Gateway), CloudWatch/CloudTrail, IAM, and basic VPC networking. Exposure to IaC (Terraform or CloudFormation).
- CI/CD pipelines, test automation and unit testing, and software security best practices.
- Nice to have: QuickSight, frontend frameworks (React or Angular), GitLab CI/CD, and AI development tools such as Amazon Q.
Education Requirements:
Bachelor's degree in Computer Science, Information Systems, or a related discipline with at least five years of related experience, or an equivalent combination of education and work experience.
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
If anyone reaches out to you about an open position connected with Eliassen Group, please ensure that you are working directly with us by confirming the following:
· When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
· Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group.
If you have any indication of fraudulent activity, please contact fraud@eliassen.com.
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Eliassen Group is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status. Eliassen Group’s Affirmative Action Plan (AAP) is available for inspection by any employee or applicant for employment upon request, during normal business hours of Monday through Friday, 8:30am to 5:30pm EST. Interested persons should contact Phaedra Wells at pwells@eliassen.com for assistance. It is unlawful in Massachusetts and Maryland to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.
Applicants with disabilities that believe they require an accommodation or assistance with a position, please email our HR team at hradmin@eliassen.com. This email inbox is designed exclusively to assist job seekers whose disability prevents them from being able to apply online. Emails sent for other purposes will not receive a response.
Please be advised that a number of fraudulent job postings have been released under the Eliassen Group brand.
Unfortunately, fraudulent job postings can happen. If anyone reaches out to you about an open position connected with Eliassen Group, never provide personal or financial information to anyone who is not clearly associated with Eliassen Group
If anyone seemingly from Eliassen Group has ever requested this personal information in the past or does so in the future, please contact fraud@eliassen.com.
Please ensure that you are working directly with us by confirming the following:
- When you work with Eliassen Group, all email communication will come from an Eliassen.com address, never Gmail, Yahoo, etc.
- Eliassen Group will never ask you for personal information (home address, bank account, or check routing number) until you have worked with someone clearly associated with Eliassen Group, as indicated above