Job#: 3027451 Job Description: We are hiring a Senior Full Stack Developer!Role: Senior Full Stack Developer (Python)
Supporting: Large Financial Services Client
Location: Full-time, on-site M-F in McLean, VA
Assignment Type: Contract Only
Duration: ~ 9 Months (possible extension)
Pay Range: $60 - $80 per hr. Specific compensation will be determined based on experience, qualifications, and other relevant factors.
Position Description:We are seeking a highly experienced Developer-Full Stack Senior (Python) to support a major enterprise data transformation initiative. This role focuses on backend Python development, modernizing data pipelines, optimizing complex SQL queries, supporting large-scale data migrations, and building scalable services that integrate across multiple systems.
You will work on high-impact data engineering and backend components, contribute to cloud-based data warehousing efforts, and ensure smooth data flows across modernized platforms.
Key Responsibilities:- Analyze and convert complex SQL queries to align with new data sources.
- Support and execute large-scale data migration activities with a focus on accuracy and integrity.
- Update existing applications to integrate with new data platforms.
- Work with Snowflake for data warehousing, extraction, migration, and analytics.
- Develop and enhance backend Python services and microservices.
- Ensure smooth system-to-system data integration during transformation efforts.
Qualifications:- 7+ years of Python development experience, including microservices.
- 5+ years advanced SQL experience (complex queries, optimization, large datasets).
- Experience integrating with Snowflake APIs and/or GraphQL (1-3 years).
- Strong experience with relational databases: Sybase, SQL Server, MySQL.
- Proven ability to analyze, join, and transform large datasets from multiple sources.
- 7-10 years of IT experience in design, development, integration, and testing.
- Experience with REST/SOAP web services and enterprise integrations.
- Hands-on experience with Jira, Eclipse, Git, Bitbucket, Gradle, Docker, and Jenkins.
- 3-5 years of unit testing using Python testing frameworks.
- Experience with Django, FastAPI, and Python data libraries (NumPy, Pandas, Dask, spaCy, NLTK, scikit-learn).
- Bachelor's degree in Computer Science or related field.
Preferred Skills:
- Ability to work independently and drive project objectives.
- Strong collaboration with architects, analysts, and project managers.
- Excellent problem-solving and analytical abilities.
- Experience with ETL tools and data pipeline orchestration.
- Experience working within large enterprise data environments.
EEO Employer
Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .
Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click for more details.
Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.
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