Mid-Level Software Engineer

Mid-Level Software Engineer

Rockville, MD

Type: Contract

Category: Development

Industry: Financial Services

Standard Hours: Open

Reference ID: JN -092026-108720

Date Posted: 10/21/2026

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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.

Recruitment Transparency Notice

Eliassen Group values transparency in our recruitment practices. Please be advised that Eliassen Group utilizes artificial intelligence (AI) tools as part of its initial application screening and hiring process. You may receive email and SMS notifications from the Eliassen Virtual Recruiting Team ( View email address on click.appcast.io , View phone number on click.appcast.io) inviting you to complete a brief voice screening as part of your application process. These tools assist our hiring teams in different ways, including but not limited to, assistance in reviewing application materials to help identify candidates whose qualifications most closely match the requirements of the position. All AI-assisted evaluations and responses are reviewed by human recruiters before any hiring decisions are made. The use of AI in our process is intended to support fairness, efficiency, and consistency, and Eliassen Group takes measures to prevent bias or discrimination in connection with its hiring practices. By proceeding, you acknowledge, agree, and consent to Eliassen Group's use of these tools, including AI tools, as part of the application and hiring process.

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 View email address on click.appcast.io .

About Eliassen Group:

Eliassen Group is a strategic consulting firm that helps organizations reach further and achieve more through our technology, business advisory, and life sciences solutions. For nearly 40 years, we have combined exceptional people, deep domain expertise, and intelligent capabilities to expand our clients' capacity and accelerate meaningful outcomes. We are driven by a purpose to positively impact the lives of our employees, clients, consultants, and the communities we serve.

Eliassen is committed to building a diverse and inclusive team from a variety of backgrounds, perspectives, and skills. We are an Equal Opportunity and Affirmative Action Employer and all employment decisions are based on merit, performance, and business needs. Eliassen does not discriminate on the basis of race, color, gender identity or expression, sexual preference or orientation, sex (including pregnancy, childbirth, and related medical conditions), marital status, creed, religion, physical or mental disability, genetic information, military or veteran status, age, ancestry, national origin, citizenship status, prohibited criminal record inquiries of applicants and employees, or any other category protected by federal, state, or local laws.

Don't miss out on our referral program! If we hire a candidate that you refer us to then you can be eligible for a $1,000 referral check!