

Senior Developer
⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior Python Developer, a 6-month contract to full-time position, offering $60.00 - $70.00/hour. Remote or hybrid in Arlington, VA. Requires 10+ years in systems integration, backend Python development, and data pipelines; US citizenship needed.
🌎 - Country
United States
💱 - Currency
$ USD
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💰 - Day rate
560
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🗓️ - Date discovered
June 7, 2025
🕒 - Project duration
More than 6 months
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🏝️ - Location type
Hybrid
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📄 - Contract type
Unknown
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🔒 - Security clearance
Unknown
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📍 - Location detailed
Fairfax, VA
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🧠 - Skills detailed
#ML (Machine Learning) #Storage #Agile #S3 (Amazon Simple Storage Service) #Elasticsearch #AWS (Amazon Web Services) #ECR (Elastic Container Registery) #Redis #Jira #Kubernetes #Databases #Security #GIT #BitBucket #Cybersecurity #Stories #Splunk #Docker #Scala #AWS S3 (Amazon Simple Storage Service) #Containers #Python #Leadership #Kafka (Apache Kafka) #NoSQL #GitLab #Batch #GitHub #"ETL (Extract #Transform #Load)" #Data Pipeline #Cloud
Role description
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Job#: 2071571
Job Description:
Title: Senior Python Developer
Location: Remote / Hybrid in Arlington, VA
Contract: 6 month contract to full time perm position
Pay on Contract: $60.00 - $70.00 / hourly (Based on experience)
Salary Conversion when perm
APPLY HERE: Please send a resume to Skylar at [email protected]
Required Skills
• Must be a US Citizen able to acquire DHS Suitability
• 10+ years experience building highly performant, reliable, and scalable systems integrations to include ETL functionality, integrating functions between applications, and working with APIs.
• 5+ years experience developing backend enterprise-level Python applications.
• 5+ years experience working with a multitude of storage solutions to include relational databases, non-relational or NoSQL databases, object-relational databases, distributed data stores, and caches or in-memory data stores. Specific technologies include Elasticsearch, Splunk, Postgres, AWS s3, Redis, and memcached.
• 5+ years developing microservice based applications utilizing components such as containers, Docker, Kubernetes, AWS ECR/ECS/EKS/Fargate, and container registries.
• 5+ years leveraging git repositories (e.g. Github, Gitlab, Bitbucket) with an advanced understanding of branching strategies, pull requests, commits, and other key concepts.
• Demonstrated experience writing unit tests to ensure reliable code delivery.
• Expertise in creating data pipelines to include batch and streaming data such as log data or tool/sensor data.
• Experience leveraging message queuing systems as part of a data pipeline solution. RabbitMQ or Kafka preferred.
Desired Skills
• 5+ years experience incorporating solutions into Continuous Integration / Continuous Delivery (CI/CD) pipelines as part of the development lifecycle.
• 3+ years working within a team that executes work using the Agile methodology, including the use of Agile Lifecyle Management (ALM) tools such as Jira and Confluence.
• 3+ years experience developing in a cloud environment, with an understanding of how cloud native services can be leveraged to deliver high quality products efficiently.
• Experience working with cybersecurity concepts, tools, technologies, and missions.
• Understanding of machine learning key concepts.
• Contributor to open source projects.
Our client is looking for a Senior Developer to support the development of an integrated solution to visualize cyber security related data. The Continuous Diagnostics and Mitigation (CDM) Dashboard is comprised of multiple Commercial Off the Shelf (COTS) and open source products, software configuration packages, and custom code which work together to operate as a single dashboard solution, tailored to meet DHS requirements. Our client is responsible for designing the complete Dashboard solution, and for developing and delivering custom components that work with the prescribed, pre-installed COTS and open source components. This position will work as part of an agile development team to conduct systems design, analysis, and development of the solution.
We are seeking a problem solver, who enjoys the challenge of tackling technical tasks and problems with little oversight, and connecting dots to think at the broader, solution level. A strong desire and aptitude for learning is a must - our solution is rapidly evolving, along with new requirements, technologies, and the threat landscape. Successful candidates will have demonstrated experience writing well-structured Python code using best practices to deliver enterprise-level applications. Candidates should have a solid understanding of core data pipeline processing capabilities to include different design patterns, stream vs bulk processing, ETL functionality, a range of data stores, and APIs. The ability to develop and deliver reliable, performant, and scalable solutions on time is a critical ability of the ideal candidate.
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 [email protected] or 844-463-6178.
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 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.
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 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.
Apex Systems is part of the Commercial Segment of ASGN Incorporated.
NYSE: ASGN
4400 Cox Road
Suite 200
Glen Allen, Virginia 23060
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 [email protected] (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Apex Systems.